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Graci S, Barone A. Tomato plant response to heat stress: a focus on candidate genes for yield-related traits. FRONTIERS IN PLANT SCIENCE 2024; 14:1245661. [PMID: 38259925 PMCID: PMC10800405 DOI: 10.3389/fpls.2023.1245661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024]
Abstract
Climate change and global warming represent the main threats for many agricultural crops. Tomato is one of the most extensively grown and consumed horticultural products and can survive in a wide range of climatic conditions. However, high temperatures negatively affect both vegetative growth and reproductive processes, resulting in losses of yield and fruit quality traits. Researchers have employed different parameters to evaluate the heat stress tolerance, including evaluation of leaf- (stomatal conductance, net photosynthetic rate, Fv/Fm), flower- (inflorescence number, flower number, stigma exertion), pollen-related traits (pollen germination and viability, pollen tube growth) and fruit yield per plant. Moreover, several authors have gone even further, trying to understand the plants molecular response mechanisms to this stress. The present review focused on the tomato molecular response to heat stress during the reproductive stage, since the increase of temperatures above the optimum usually occurs late in the growing tomato season. Reproductive-related traits directly affects the final yield and are regulated by several genes such as transcriptional factors, heat shock proteins, genes related to flower, flowering, pollen and fruit set, and epigenetic mechanisms involving DNA methylation, histone modification, chromatin remodelling and non-coding RNAs. We provided a detailed list of these genes and their function under high temperature conditions in defining the final yield with the aim to summarize the recent findings and pose the attention on candidate genes that could prompt on the selection and constitution of new thermotolerant tomato plant genotypes able to face this abiotic challenge.
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Affiliation(s)
| | - Amalia Barone
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy
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Wei HY, Li Y, Wei L, Peng SY, Zhang B, Xu DJ, Cheng X. Exploring the mechanism of exopolysaccharides in mitigating cadmium toxicity in rice through analyzing the changes of antioxidant system. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132678. [PMID: 37793262 DOI: 10.1016/j.jhazmat.2023.132678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/16/2023] [Accepted: 09/28/2023] [Indexed: 10/06/2023]
Abstract
Recently, exopolysaccharides (EPS) were found to alleviate cadmium (Cd) toxicity to crops by regulating the antioxidant system, but the mechanism remains unclear. Herein, by quantitative and transcriptomic approaches, a systematical map of the changes in the antioxidant system was drawn to dissected the underlying mechanism. The results demonstrated that the ascorbate-glutathione cycle (ASA-GSH cycle) is a major contributor. Specifically, compared to the control, the rice exposed to Cd exhibited a significant increase in the GSH pool (about 9-fold at 7 d), but a continuous decrease in the ASA pool (only 15.42% remained at 15 d) and an excessive accumulation of reactive oxygen species (ROS). Interestingly, with the addition of EPS, the increase of the GSH pool significantly slowed down (decreased by 180.18% at 7 d, compared to the Cd-stressed treatment), and the ASA pool remained high (consistently above 70.00% of the control group). ROS also maintained at a good level. Moreover, the activities of enzymatic antioxidants showed the similar trend. By RNA-Seq analysis, multiple genes enriched in ASA-GSH related pathway were screened (such as OsRBOHB, OsGST, OsPOD) for further study. This study provides a foundation for EPS application in agriculture, which also establishes a better way for analyzing antioxidant system.
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Affiliation(s)
- Hong-Yu Wei
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yi Li
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Lei Wei
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Shuang-Ying Peng
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Bao Zhang
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Duan-Jun Xu
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Xin Cheng
- Institute of Applied Microbiology, College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China.
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103
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Avalbaev A, Fedyaev V, Lubyanova A, Yuldashev R, Allagulova C. 24-Epibrassinolide Reduces Drought-Induced Oxidative Stress by Modulating the Antioxidant System and Respiration in Wheat Seedlings. PLANTS (BASEL, SWITZERLAND) 2024; 13:148. [PMID: 38256702 PMCID: PMC10818601 DOI: 10.3390/plants13020148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/29/2023] [Accepted: 12/31/2023] [Indexed: 01/24/2024]
Abstract
Brassinosteroids (BRs) represent a group of plant signaling molecules with a steroidal skeleton that play an essential role in plant adaptation to different environmental stresses, including drought. In this work, the effect of pretreatment with 0.4 µM 24-epibrassinolide (EBR) on the oxidant/antioxidant system in 4-day-old wheat seedlings (Triticum aestivum L.) was studied under moderate drought stress simulated by 12% polyethylene glycol 6000 (PEG). It was revealed that EBR-pretreatment had a protective effect on wheat plants as evidenced by the maintenance of their growth rate, as well as the reduction in lipid peroxidation and electrolyte leakage from plant tissues under drought conditions. This effect was likely due to the ability of EBR to reduce the stress-induced accumulation of reactive oxygen species (ROS) and modulate the activity of antioxidant enzymes. Meanwhile, EBR pretreatment enhanced proline accumulation and increased the barrier properties of the cell walls in seedlings by accelerating the lignin deposition. Moreover, the ability of EBR to prevent a drought-caused increase in the intensity of the total dark respiration and the capacity of alternative respiration contributes significantly to the antistress action of this hormone.
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Affiliation(s)
- Azamat Avalbaev
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
| | - Vadim Fedyaev
- Institute of Nature and Human, Ufa University of Sciences and Technology, 32 Zaki Validi, Ufa 450076, Russia;
| | - Alsu Lubyanova
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
| | - Ruslan Yuldashev
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
| | - Chulpan Allagulova
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
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Vodiasova E, Meger Y, Uppe V, Tsiupka V, Chelebieva E, Smykov A. Class III Peroxidases in the Peach ( Prunus persica): Genome-Wide Identification and Functional Analysis. PLANTS (BASEL, SWITZERLAND) 2024; 13:127. [PMID: 38202438 PMCID: PMC10780707 DOI: 10.3390/plants13010127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/18/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024]
Abstract
Class III peroxidases are plant-specific and play a key role in the response to biotic and abiotic stresses, as well as in plant growth and development. In this study, we investigated 60 POD genes from Prunus persica based on genomic and transcriptomic data available in NCBI and analysed the expression of individual genes with qPCR. Peroxidase genes were clustered into five subgroups using the phylogenetic analysis. Their exon-intron structure and conserved motifs were analysed. Analysis of the transcriptomic data showed that the expression of PpPOD genes varied significantly in different tissues, at different developmental stages and under different stress treatments. All genes were divided into low- and high-expressed genes, and the most highly expressed genes were identified for individual tissues (PpPOD12 and PpPOD42 in flower buds and PpPOD73, PpPOD12, PpPOD42, and PpPOD31 in fruits). The relationship between cold tolerance and the level of peroxidase expression was revealed. These studies were carried out for the first time in the peach and confirmed that chilling tolerance may be related to the specificity of antioxidant complex gene expression.
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Affiliation(s)
- Ekaterina Vodiasova
- Federal State Funded Institution of Science “The Labor Red Banner Order Nikita Botanical Gardens—National Scientific Center of the RAS”, Nikita, 298648 Yalta, Russia; (Y.M.); (V.U.); (V.T.); (E.C.); (A.S.)
- A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 299011 Sevastopol, Russia
| | - Yakov Meger
- Federal State Funded Institution of Science “The Labor Red Banner Order Nikita Botanical Gardens—National Scientific Center of the RAS”, Nikita, 298648 Yalta, Russia; (Y.M.); (V.U.); (V.T.); (E.C.); (A.S.)
| | - Victoria Uppe
- Federal State Funded Institution of Science “The Labor Red Banner Order Nikita Botanical Gardens—National Scientific Center of the RAS”, Nikita, 298648 Yalta, Russia; (Y.M.); (V.U.); (V.T.); (E.C.); (A.S.)
- A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 299011 Sevastopol, Russia
| | - Valentina Tsiupka
- Federal State Funded Institution of Science “The Labor Red Banner Order Nikita Botanical Gardens—National Scientific Center of the RAS”, Nikita, 298648 Yalta, Russia; (Y.M.); (V.U.); (V.T.); (E.C.); (A.S.)
| | - Elina Chelebieva
- Federal State Funded Institution of Science “The Labor Red Banner Order Nikita Botanical Gardens—National Scientific Center of the RAS”, Nikita, 298648 Yalta, Russia; (Y.M.); (V.U.); (V.T.); (E.C.); (A.S.)
- A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 299011 Sevastopol, Russia
| | - Anatoly Smykov
- Federal State Funded Institution of Science “The Labor Red Banner Order Nikita Botanical Gardens—National Scientific Center of the RAS”, Nikita, 298648 Yalta, Russia; (Y.M.); (V.U.); (V.T.); (E.C.); (A.S.)
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105
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Naz S, Mushtaq A, Ali S, Muhammad HMD, Saddiq B, Ahmad R, Zulfiqar F, Hayat F, Tiwari RK, Lal MK, Altaf MA. Foliar application of ascorbic acid enhances growth and yield of lettuce ( Lactuca sativa) under saline conditions by improving antioxidant defence mechanism. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:NULL. [PMID: 36167606 DOI: 10.1071/fp22139] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/09/2022] [Indexed: 05/27/2023]
Abstract
Lettuce (Lactuca sativa L.) production is low because of different environmental stresses. Salt stress significantly reduces lettuce growth and yield. Foliar application of ascorbic acid is considered as a possible way to mitigate the adverse salinity effects on plants. This current study investigated the effect of foliar spray of ascorbic acid (control, 100, 200, 300 and 400mg/L) to mitigate negative effects of salinity (0, 50, 100 and 150mMNaCl) in lettuce plants in 2019 and 2020. Salinity level of 200mMNaCl significantly reduced growth and yield traits; i.e. leaf length and diameter, number of leaves, fresh plant weight, number of roots, root length and root dry weight and these traits increased under foliar application of ascorbic acid concentration of 400mg/L. Two salinity levels (150 and 200mMNaCl)×400mg/L ascorbic acid enhanced superoxide dismutase (SOD) content in lettuce plants. Peroxidase (POD) content increased in 200mMNaCl and 400mg/L ascorbic acid. Catalase (CAT) content increased in 100, 150 and 200mMNaCl and 400mg/L ascorbic acid. Ascorbic acid was significantly greater in 200mMNaCl and 400mg/L ascorbic acid. Phenolic content was the maximum in 200mMNaCl and 300mg/L and 400mg/L ascorbic acid. Titratable acidity was higher in 0, 50, 100, 150 and 200mMNaCl and control of ascorbic acid. We conclude that ascorbic acid had potential to mitigate the adverse effects of salinity by reducing oxidative injury in agricultural crops especially lettuce.
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Affiliation(s)
- Safina Naz
- Department of Horticulture, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Abubakar Mushtaq
- Department of Horticulture, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Sajid Ali
- Department of Horticulture, Bahauddin Zakariya University, Multan 60800, Pakistan
| | | | - Bushra Saddiq
- Faculty of Agriculture and Environmental Science, Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Riaz Ahmad
- Department of Horticulture, The University of Agriculture, Dera Ismail Khan, Pakistan
| | - Faisal Zulfiqar
- Department of Horticultural Sciences, The Islamia University of Bahawalpur, Pakistan
| | - Faisal Hayat
- College of Horticulture and Landscape Architecture at Zhongkai University of Agriculture and Engineering, Guangzhou 510225, P. R. China
| | | | - Milan Kumar Lal
- ICAR-Central Potato Research Institute, Shimla 171001, India
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106
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Zeng J, Wu C, Ye X, Zhou J, Chen Y, Li L, Lin M, Wang S, Liu S, Yan Y, Tie W, Yang J, Yan F, Zeng L, Liu Y, Hu W. MePP2C24, a cassava (Manihot esculenta) gene encoding protein phosphatase 2C, negatively regulates drought stress and abscisic acid responses in transgenic Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108291. [PMID: 38141400 DOI: 10.1016/j.plaphy.2023.108291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 12/06/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Abscisic acid (ABA) signaling plays a crucial role in plant development and response to abiotic/biotic stress. However, the function and regulation of protein phosphatase 2C (PP2C), a key component of abscisic acid signaling, under abiotic stress are still unknown in cassava, a drought-tolerant crop. In this study, a cassava PP2C gene (MePP2C24) was cloned and characterized. The MePP2C24 transcripts increased in response to mannitol, NaCl, and ABA. Overexpression of MePP2C24 in Arabidopsis resulted in increased sensitivity to drought stress and decreased sensitivity to exogenous ABA. This was demonstrated by transgenic lines having higher levels of malondialdehyde (MDA), ion leakage (IL), and reactive oxygen species (ROS), lower activities of catalase (CAT) and peroxidase (POD), and lower proline content than wild type (WT) under drought stress. Moreover, MePP2C24 overexpression caused decrease in expression of drought-responsive genes related to ABA signaling pathway. In addition, MePP2C24 was localized in the cell nucleus and showed self-activation. Furthermore, many MePYLs (MePYL1, MePYL4, MePYL7-9, and MePYL11-13) could interact with MePP2C24 in the presence of ABA, and MePYL1 interacted with MePP2C24 in both the presence and absence of ABA. Additionally, MebZIP11 interacted with the promoter of MePP2C24 and exerted a suppressive effect. Taken together, our results suggest that MePP2C24 acts as a negative regulator of drought tolerance and ABA response.
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Affiliation(s)
- Jian Zeng
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China.
| | - Chunlai Wu
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China; The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan, 430074, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China
| | - Xiaoxue Ye
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China
| | - Jiewei Zhou
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Yingtong Chen
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Lizhen Li
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Man Lin
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Shuting Wang
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Siwen Liu
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China; State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - Yan Yan
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China
| | - Weiwei Tie
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China
| | - Jinghao Yang
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China
| | - Fei Yan
- Shaanxi Provincial Bioresource Key Laboratory, College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723000, China
| | - Liwang Zeng
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China.
| | - Yujia Liu
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, School of Biology and Agriculture, Shaoguan University, Shaoguan, 512005, Guangdong, China.
| | - Wei Hu
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Institute of Scientific and Technical Information, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, 517101, China.
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107
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Anwar K, Joshi R, Bahuguna RN, Govindjee G, Sasidharan R, Singla-Pareek SL, Pareek A. Impact of individual, combined and sequential stress on photosynthesis machinery in rice (Oryza sativa L). PHYSIOLOGIA PLANTARUM 2024; 176:e14209. [PMID: 38348703 DOI: 10.1111/ppl.14209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/15/2024] [Accepted: 01/30/2024] [Indexed: 02/15/2024]
Abstract
Abiotic stresses such as heat, drought and submergence are major threats to global food security. Despite simultaneous or sequential occurrence of these stresses being recurrent under field conditions, crop response to such stress combinations is poorly understood. Rice is a staple food crop for the majority of human beings. Exploitation of existing genetic diversity in rice for combined and/or sequential stress is a useful approach for developing climate-resilient cultivars. We phenotyped ~400 rice accessions under high temperature, drought, or submergence and their combinations. A cumulative performance index revealed Lomello as the best performer across stress and stress combinations at the seedling stage. Lomello showed a remarkable ability to maintain a higher quantum yield of photosystem (PS) II photochemistry. Moreover, the structural integrity of the photosystems, electron flow through both PSI and PSII and the ability to protect photosystems against photoinhibition were identified as the key traits of Lomello across the stress environments. A higher membrane stability and an increased amount of leaf chlorophyll under stress may be due to an efficient management of reactive oxygen species (ROS) at the cellular level. Further, an efficient electron flow through the photosystems and, thus, a higher photosynthetic rate in Lomello is expected to act as a sink for ROS by reducing the rate of electron transport to the high amount of molecular oxygen present in the chloroplast. However, further studies are needed to identify the molecular mechanism(s) involved in the stability of photosynthetic machinery and stress management in Lomello during stress conditions.
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Affiliation(s)
- Khalid Anwar
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rohit Joshi
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rajeev N Bahuguna
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
- National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Govindjee Govindjee
- Department of Biochemistry, Center of Biophysics & Quantitative Biology, and Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Rashmi Sasidharan
- Plant Stress Resilience, Institute of Environmental Biology, Utrecht University, The Netherlands
| | - Sneh L Singla-Pareek
- Plant Stress Biology, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Road, New Delhi, India
| | - Ashwani Pareek
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
- National Agri-Food Biotechnology Institute, Mohali, Punjab, India
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108
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Salih H, Bai W, Liang Y, Yang R, Zhao M, Muhammd SM, Zhang D, Li X. ROS scavenging enzyme-encoding genes play important roles in the desert moss Syntrichia caninervis response to extreme cold and desiccation stresses. Int J Biol Macromol 2024; 254:127778. [PMID: 37926320 DOI: 10.1016/j.ijbiomac.2023.127778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/14/2023] [Accepted: 10/27/2023] [Indexed: 11/07/2023]
Abstract
Abiotic stress is one of the major environmental constraints limiting plant growth. Syntrichia caninervis is one of the unique plant models that can cope with harsh environments. Reactive oxygen species (ROS) are a vital signaling molecule for protecting plants from oxidative stress, but research on ROS in S. caninervis is limited. Here, we identified 112 ROS genes in S. caninervis, including 40 GSTs, 51 PODs, 9 SODs, 6 CATs, 3 GPXs and 3 APXs families. GO and KEGG analyses showed that ROS genes are involved in responses to various stimuli and phenylpropanoid biosynthesis. ROS genes contain many stress-responsive and hormonal cis-elements in their promoter regions. More ROS genes were induced by cold stress than desiccation stress, and both conditions changed the transcript abundances of several ROS genes. CAT and POD, H2O2, MDA, and GSH were also induced under biotic stress, specifically CAT activity. The results indicated that the ScCAT genes and their activities could be strongly associated with the regulation of ROS production. This is the first systematic identification of ROS genes in S. caninervis and our findings contribute to further research into the roles of ScROS adjustment under abiotic stress while also providing excellent genetic resources for plant breeding.
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Affiliation(s)
- Haron Salih
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - Wenwan Bai
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuqing Liang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - RuiRui Yang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingqi Zhao
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Surayya Mustapha Muhammd
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - Xiaoshuang Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China.
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109
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Kumar V, Wegener M, Knieper M, Kaya A, Viehhauser A, Dietz KJ. Strategies of Molecular Signal Integration for Optimized Plant Acclimation to Stress Combinations. Methods Mol Biol 2024; 2832:3-29. [PMID: 38869784 DOI: 10.1007/978-1-0716-3973-3_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Plant growth and survival in their natural environment require versatile mitigation of diverse threats. The task is especially challenging due to the largely unpredictable interaction of countless abiotic and biotic factors. To resist an unfavorable environment, plants have evolved diverse sensing, signaling, and adaptive molecular mechanisms. Recent stress studies have identified molecular elements like secondary messengers (ROS, Ca2+, etc.), hormones (ABA, JA, etc.), and signaling proteins (SnRK, MAPK, etc.). However, major gaps remain in understanding the interaction between these pathways, and in particular under conditions of stress combinations. Here, we highlight the challenge of defining "stress" in such complex natural scenarios. Therefore, defining stress hallmarks for different combinations is crucial. We discuss three examples of robust and dynamic plant acclimation systems, outlining specific plant responses to complex stress overlaps. (a) The high plasticity of root system architecture is a decisive feature in sustainable crop development in times of global climate change. (b) Similarly, broad sensory abilities and apparent control of cellular metabolism under adverse conditions through retrograde signaling make chloroplasts an ideal hub. Functional specificity of the chloroplast-associated molecular patterns (ChAMPs) under combined stresses needs further focus. (c) The molecular integration of several hormonal signaling pathways, which bring together all cellular information to initiate the adaptive changes, needs resolving.
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Affiliation(s)
- Vijay Kumar
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Melanie Wegener
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Madita Knieper
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Armağan Kaya
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Andrea Viehhauser
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany.
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Singh T, Bisht N, Ansari MM, Chauhan PS. The hidden harmony: Exploring ROS-phytohormone nexus for shaping plant root architecture in response to environmental cues. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108273. [PMID: 38103339 DOI: 10.1016/j.plaphy.2023.108273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
Root system architecture, encompassing lateral roots and root hairs, plays a vital in overall plant growth and stress tolerance. Reactive oxygen species (ROS) and plant hormones intricately regulate root growth and development, serving as signaling molecules that govern processes such as cell proliferation and differentiation. Manipulating the interplay between ROS and hormones has the potential to enhance nutrient absorption, stress tolerance, and agricultural productivity. In this review, we delve into how studying these processes provides insights into how plants respond to environmental changes and optimize growth patterns to better control cellular processes and stress responses in crops. We discuss various factors and complex signaling networks that may exist among ROS and phytohormones during root development. Additionally, the review highlights possible role of reactive nitrogen species (RNS) in ROS-phytohormone interactions and in shaping root system architecture according to environmental cues.
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Affiliation(s)
- Tanya Singh
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Nikita Bisht
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India
| | - Mohd Mogees Ansari
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Puneet Singh Chauhan
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
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Singh P, Arif Y, Mir AR, Alam P, Hayat S. Quercetin-mediated alteration in photosynthetic efficiency, sugar metabolism, elemental status, yield, and redox potential in two varieties of okra. PROTOPLASMA 2024; 261:125-142. [PMID: 37550558 DOI: 10.1007/s00709-023-01885-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/23/2023] [Indexed: 08/09/2023]
Abstract
Quercetin is a bioactive natural compound with an antioxidative property that can potentially modify plant physiology. The current investigation aimed to gauge the effect of different concentrations of foliar spray of quercetin (0, 0.5, 1, 1.5, 2.0 mM) on several morphological and physio-biochemical performances of Abelmoschus esculentus L. (Moench.) plants under normal environmental conditions. The foliar spray on the plant leaves was applied 25 days after sowing (DAS) and continued up to 30 DAS once each day. The plants were sampled at 30 and 45 DAS to monitor several parameters. The foliar treatments of quercetin significantly upgraded all the studied parameters. The results direct that most of the traits such as growth, nutrient uptake, photosynthetic, and enzyme activities were promoted in a dose-dependent way. Quercetin application lowered the reactive oxygen species (ROS) buildup by increasing the antioxidant enzyme activities. Microscopic investigations further revealed a significant enhancement in the stomatal aperture under quercetin application. Out of several doses tested, 1 mM of quercetin proved best and can be used for further investigations.
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Affiliation(s)
- Priyanka Singh
- Department of Botany, Plant Physiology Section, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Yamshi Arif
- Department of Botany, Plant Physiology Section, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Anayat Rasool Mir
- Department of Botany, Plant Physiology Section, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Pravej Alam
- Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
| | - Shamsul Hayat
- Department of Botany, Plant Physiology Section, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India.
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Zhao X, Wang Q, Yan C, Sun Q, Wang J, Li C, Yuan C, Mou Y, Shan S. The bHLH transcription factor AhbHLH121 improves salt tolerance in peanut. Int J Biol Macromol 2024; 256:128492. [PMID: 38035960 DOI: 10.1016/j.ijbiomac.2023.128492] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/02/2023]
Abstract
Plants have developed a number of protective mechanisms to respond to salt and other stresses. Previous studies have shown that the basic helix-loop-helix (bHLH) transcription factor AhbHLH121 plays a crucial role in the response to abiotic stresses in peanut, but the mechanisms and functions related to AhbHLH121 remain unclear. In the current research, AhbHLH121 was induced by salt treatment. Overexpression of AhbHLH121 improved salt resistance, whereas silencing AhbHLH121 resulted in the inverse correlation. Our results also demonstrated that overexpression of AhbHLH121 results in greater activity of antioxidant enzymes under stress condition by promoting the expression of the genes for peroxidase, catalase and superoxide dismutase (AhPOD, AhCAT and AhSOD), indicating enhanced scavenging of reactive oxygen species. Further analysis including Yeast one-hybrid (Y1H) assays and electrophoretic mobility shift assays (EMSAs), suggested that AhbHLH121 can bind directly to the G/E-box regions of the AhPOD, AhCAT and AhSOD promoters, thereby promoting their expression and leading to improved antioxidant enzyme activity. Our research improves the understanding of the mechanisms that allow this peanut bHLH transcription factor to improve abiotic tolerance, and provides valuable gene resources for breeding programs to promote salt stress resistance.
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Affiliation(s)
- Xiaobo Zhao
- Shandong Peanut Research Institute, Qingdao 266100, China.
| | - Qi Wang
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Caixia Yan
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Quanxi Sun
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Juan Wang
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Chunjuan Li
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Cuiling Yuan
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Yifei Mou
- Shandong Peanut Research Institute, Qingdao 266100, China
| | - Shihua Shan
- Shandong Peanut Research Institute, Qingdao 266100, China.
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Mallén-Ponce MJ, Pérez-Pérez ME. Redox-mediated activation of ATG3 promotes ATG8 lipidation and autophagy progression in Chlamydomonas reinhardtii. PLANT PHYSIOLOGY 2023; 194:359-375. [PMID: 37772945 PMCID: PMC10756753 DOI: 10.1093/plphys/kiad520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/05/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023]
Abstract
Autophagy is one of the main degradative pathways used by eukaryotic organisms to eliminate useless or damaged intracellular material to maintain cellular homeostasis under stress conditions. Mounting evidence indicates a strong interplay between the generation of reactive oxygen species and the activation of autophagy. Although a tight redox regulation of autophagy has been shown in several organisms, including microalgae, the molecular mechanisms underlying this control remain poorly understood. In this study, we have performed an in-depth in vitro and in vivo redox characterization of ATG3, an E2-activating enzyme involved in ATG8 lipidation and autophagosome formation, from 2 evolutionary distant unicellular model organisms: the green microalga Chlamydomonas (Chlamydomonas reinhardtii) and the budding yeast Saccharomyces cerevisiae. Our results indicated that ATG3 activity from both organisms is subjected to redox regulation since these proteins require reducing equivalents to transfer ATG8 to the phospholipid phosphatidylethanolamine. We established the catalytic Cys of ATG3 as a redox target in algal and yeast proteins and showed that the oxidoreductase thioredoxin efficiently reduces ATG3. Moreover, in vivo studies revealed that the redox state of ATG3 from Chlamydomonas undergoes profound changes under autophagy-activating stress conditions, such as the absence of photoprotective carotenoids, the inhibition of fatty acid synthesis, or high light irradiance. Thus, our results indicate that the redox-mediated activation of ATG3 regulates ATG8 lipidation under oxidative stress conditions in this model microalga.
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Affiliation(s)
- Manuel J Mallén-Ponce
- Instituto de Bioquímica Vegetal y Fotosíntesis (IBVF), Consejo Superior de Investigaciones Científicas (CSIC)- Universidad de Sevilla, Sevilla 41092, Spain
| | - María Esther Pérez-Pérez
- Instituto de Bioquímica Vegetal y Fotosíntesis (IBVF), Consejo Superior de Investigaciones Científicas (CSIC)- Universidad de Sevilla, Sevilla 41092, Spain
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Zhao W, Wu Z, Amde M, Zhu G, Wei Y, Zhou P, Zhang Q, Song M, Tan Z, Zhang P, Rui Y, Lynch I. Nanoenabled Enhancement of Plant Tolerance to Heat and Drought Stress on Molecular Response. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:20405-20418. [PMID: 38032362 DOI: 10.1021/acs.jafc.3c04838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Global warming has posed significant pressure on agricultural productivity. The resulting abiotic stresses from high temperatures and drought have become serious threats to plants and subsequent global food security. Applying nanomaterials in agriculture can balance the plant's oxidant level and can also regulate phytohormone levels and thus maintain normal plant growth under heat and drought stresses. Nanomaterials can activate and regulate specific stress-related genes, which in turn increase the activity of heat shock protein and aquaporin to enable plants' resistance against abiotic stresses. This review aims to provide a current understanding of nanotechnology-enhanced plant tolerance to heat and drought stress. Molecular mechanisms are explored to see how nanomaterials can alleviate abiotic stresses on plants. In comparison with organic molecules, nanomaterials offer the advantages of targeted transportation and slow release. These advantages help the nanomaterials in mitigating drought and heat stress in plants.
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Affiliation(s)
- Weichen Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhangguo Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China
| | - Meseret Amde
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Department of Chemistry, College of Natural and Computational Sciences, Haramaya University, Oromia 103, Ethiopia
| | - Guikai Zhu
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yujing Wei
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China
| | - Pingfan Zhou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Qinghua Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China
| | - Maoyong Song
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiqiang Tan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China
| | - Peng Zhang
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yukui Rui
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
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Wan S, Liang B, Yang L, Hu W, Kuang L, Song J, Xie J, Huang Y, Liu D, Liu Y. The MADS-box family gene PtrANR1 encodes a transcription activator promoting root growth and enhancing plant tolerance to drought stress. PLANT CELL REPORTS 2023; 43:16. [PMID: 38135839 DOI: 10.1007/s00299-023-03121-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023]
Abstract
KEY MESSAGE PtrANR1 positively regulates plant drought tolerance by increasing proline level and reducing ROS accumulation. PtrANR1 directly activates PtrAUX1 expression to promote root growth and improve plant drought tolerance. Citrus quality and yield are severely declined under drought stress. To date, the effects of MADS-box family transcription factors (TFs) on plant drought resistance have made some progress. However, whether MADS-box family TFs are associated with citrus drought response has remained unclear. The current paper identified a MADS-box family gene PtrANR1 encoding anthocyanidin reductase from trifoliate orange. PtrANR1 exhibits high identities with ANR1 proteins found in various plants. PtrANR1 possesses two conserved domains known as MADS and kertanin-like domains. PtrANR1 is a nuclear protein which has transactivation activity. A significant induction of PtrANR1 transcript was detected in leaves and roots of trifoliate orange treated with PEG6000 and ABA. Under drought stress, Arabidopsis ectopic overexpressing PtrANR1 exhibited obviously elevated contents of proline, ABA and IAA, better developed root, enhanced antioxidant enzyme activities, as well as notably reduced accumulation of malondialdehyde (MDA) and reactive oxygen species (ROS) compared with WT plants. However, opposite change trends of these physiological indices were detected in PtrANR1 homolog silencing lemon. Furthermore, transgenic Arabidopsis displayed significantly increased expression levels in genes associated with ABA, IAA and proline production, IAA polar transport, ROS elimination and drought response. However, these genes exhibited noticeably decreased transcript levels in PtrANR1 homolog silencing lemon. Moreover, PtrANR1 could increase IAA content and promote root growth by binding to GArG-box in the promoter of PtrAUX1 to activate its transcript. These findings indicated that PtrANR1 had a beneficial impact on plant drought resistance through promoting root development, increasing proline accumulation and scavenging of ROS.
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Affiliation(s)
- Shiguo Wan
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Beibei Liang
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Li Yang
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Wei Hu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Liuqing Kuang
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jie Song
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jingheng Xie
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yingjie Huang
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Dechun Liu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Yong Liu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China.
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116
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Hou Q, Shen T, Yu R, Deng H, Wen X, Qiao G. Functional analysis of sweet cherry PavbHLH106 in the regulation of cold stress. PLANT CELL REPORTS 2023; 43:7. [PMID: 38133822 DOI: 10.1007/s00299-023-03115-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 10/10/2023] [Indexed: 12/23/2023]
Abstract
KEY MESSAGE Sweet cherry PavbHLH106 was up-regulated under cold induction and overexpressed to enhance the cold resistance in tobacco by mediating the scavenging of ROS through increasing of antioxidant enzyme activity. Sweet cherry (Prunus avium L.) is an economically important fruit. Chilling requirements are critical during dormancy, but abnormally low temperatures unfavorably affect fruit growth and development. Differences were found in the transcript level of PavbHLH106 under salt, dehydration, and low-temperature treatments, especially in response to cold stress, suggesting that this gene is involved in the regulation of different abiotic stresses. PavbHLH106 is homologous to Arabidopsis thaliana AtbHLH106 with a conserved bHLH domain, and transient expression in tobacco suggests that the protein is localized in the nucleus and has transcriptional activity in yeast. The PavbHLH106 overexpression in tobacco resulted in weaker electrolyte leakages, lower malondialdehyde, and higher proline content than the wild type at low-temperature treatment. Reactive oxygen species accumulation was significantly reduced in the overexpressed lines, negatively correlated with the antioxidant enzyme activity. In addition, overexpression of PavbHLH106 delayed the germination of tobacco seeds and promoted plant growth. Resistance-related genes were expressed more in the overexpressed plants compared to the wild type. PavbHLH106 bound to the PavACO promoter in yeast and potentially interacted with a bHLH162-like transcription factor. These results indicate that PavbHLH106 has various functions and is particularly active in controlling low-temperature stress.
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Affiliation(s)
- Qiandong Hou
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025, Guizhou, China
| | - Tianjiao Shen
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025, Guizhou, China
| | - Runrun Yu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025, Guizhou, China
| | - Hong Deng
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025, Guizhou, China
| | - Xiaopeng Wen
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025, Guizhou, China
| | - Guang Qiao
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025, Guizhou, China.
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Yu W, Kong G, Ya H, He L, Wu Y, Zhang H. Comprehensive Analysis of the Catalase ( CAT) Gene Family and Expression Patterns in Rubber Tree ( Hevea brasiliensis) under Various Abiotic Stresses and Multiple Hormone Treatments. Int J Mol Sci 2023; 25:70. [PMID: 38203241 PMCID: PMC10779098 DOI: 10.3390/ijms25010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/14/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024] Open
Abstract
Catalase (CAT) is one of the key enzymes involved in antioxidant defense systems and mainly scavenges H2O2 and plays a vital role in plant growth, development, and various adverse stresses. To date, a systematic study of the CAT gene family in rubber tree has not been reported. In this study, five HbCAT gene family members were identified from the rubber tree genome, and these were mainly clustered into two subfamilies. Gene structure and motif analysis showed that exon-intron and motif patterns were conserved across different plant species. Sequence analysis revealed that HbCAT proteins contain one active catalytic site, one heme-ligand signature sequence, three conserved amino acid residues (His, Tyr, and Asn), and one peroxisome-targeting signal 1 (PTS1) sequence. Fragment duplication is a selection pressure for the evolution of the HbCAT family based on Ka/Ks values. Analysis of cis-acting elements in the promoters indicated that HbCAT gene expression might be regulated by abscisic acid (ABA), salicylic acid (SA), and MYB transcription factors; furthermore, these genes might be involved in plant growth, development, and abiotic stress responses. A tissue-specific expression analysis showed that HbCATs gradually increased with leaf development and were highly expressed in mature leaves. Gene expression profiling exhibited the differential expression of the HbCATs under cold, heat, drought, and NaCl stresses. Our results provide comprehensive information about the HbCAT gene family, laying the foundation for further research on its function in rubber tree.
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Affiliation(s)
- Wencai Yu
- Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, National and Local Joint Engineering Research Center of Breeding and Cultivation Technology of Rubber Tree, Yunnan Institute of Tropical Crops, Jinghong 666100, China; (W.Y.); (G.K.); (H.Y.); (L.H.)
- Key Laboratory of Conservation and Utilization of Southwest Mountain Forest Resources, Ministry of Education, Southwest Forestry University, Kunming 650224, China
| | - Guanghong Kong
- Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, National and Local Joint Engineering Research Center of Breeding and Cultivation Technology of Rubber Tree, Yunnan Institute of Tropical Crops, Jinghong 666100, China; (W.Y.); (G.K.); (H.Y.); (L.H.)
| | - Huajin Ya
- Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, National and Local Joint Engineering Research Center of Breeding and Cultivation Technology of Rubber Tree, Yunnan Institute of Tropical Crops, Jinghong 666100, China; (W.Y.); (G.K.); (H.Y.); (L.H.)
| | - Ligang He
- Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, National and Local Joint Engineering Research Center of Breeding and Cultivation Technology of Rubber Tree, Yunnan Institute of Tropical Crops, Jinghong 666100, China; (W.Y.); (G.K.); (H.Y.); (L.H.)
| | - Yu Wu
- Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, National and Local Joint Engineering Research Center of Breeding and Cultivation Technology of Rubber Tree, Yunnan Institute of Tropical Crops, Jinghong 666100, China; (W.Y.); (G.K.); (H.Y.); (L.H.)
| | - Hanyao Zhang
- Key Laboratory of Conservation and Utilization of Southwest Mountain Forest Resources, Ministry of Education, Southwest Forestry University, Kunming 650224, China
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Asif A, Ali M, Qadir M, Karthikeyan R, Singh Z, Khangura R, Di Gioia F, Ahmed ZFR. Enhancing crop resilience by harnessing the synergistic effects of biostimulants against abiotic stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1276117. [PMID: 38173926 PMCID: PMC10764035 DOI: 10.3389/fpls.2023.1276117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 11/27/2023] [Indexed: 01/05/2024]
Abstract
Plants experience constant exposed to diverse abiotic stresses throughout their growth and development stages. Given the burgeoning world population, abiotic stresses pose significant challenges to food and nutritional security. These stresses are complex and influenced by both genetic networks and environmental factors, often resulting in significant crop losses, which can reach as high as fifty percent. To mitigate the effects of abiotic stresses on crops, various strategies rooted in crop improvement and genomics are being explored. In particular, the utilization of biostimulants, including bio-based compounds derived from plants and beneficial microbes, has garnered considerable attention. Biostimulants offer the potential to reduce reliance on artificial chemical agents while enhancing nutritional efficiency and promoting plant growth under abiotic stress condition. Commonly used biostimulants, which are friendly to ecology and human health, encompass inorganic substances (e.g., zinc oxide and silicon) and natural substances (e.g., seaweed extracts, humic substances, chitosan, exudates, and microbes). Notably, prioritizing environmentally friendly biostimulants is crucial to prevent issues such as soil degradation, air and water pollution. In recent years, several studies have explored the biological role of biostimulants in plant production, focusing particularly on their mechanisms of effectiveness in horticulture. In this context, we conducted a comprehensive review of the existing scientific literature to analyze the current status and future research directions concerning the use of various biostimulants, such as plant-based zinc oxide, silicon, selenium and aminobutyric acid, seaweed extracts, humic acids, and chitosan for enhancing abiotic stress tolerance in crop plants. Furthermore, we correlated the molecular modifications induced by these biostimulants with different physiological pathways and assessed their impact on plant performance in response to abiotic stresses, which can provide valuable insights.
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Affiliation(s)
- Anam Asif
- Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Maratab Ali
- College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong, China
- School of Food and Agricultural Sciences, University of Management and Technology, Lahore, Punjab, Pakistan
| | - Muslim Qadir
- Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Abu Dhabi, United Arab Emirates
- Department of Plant Breeding and Genetics, Faculty of Agriculture, Lasbela University of Agriculture Water and Marine Sciences, Lasbela, Balochistan, Pakistan
| | - Rajmohan Karthikeyan
- Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Zora Singh
- Horticulture, School of Science, Edith Cowan University, Joondalup, WA, Australia
| | - Ravjit Khangura
- Department of Primary Industries and Regional Development, Government of Western Australia, Kensington, WA, Australia
| | - Francesco Di Gioia
- Department of Plant Science, College of Agricultural Sciences, The Pennsylvania State University, College State, PA, United States
| | - Zienab F. R. Ahmed
- Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Abu Dhabi, United Arab Emirates
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Debnath T, Dhar DG, Dhar P. Molecular switches in plant stress adaptation. Mol Biol Rep 2023; 51:20. [PMID: 38108912 DOI: 10.1007/s11033-023-09051-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 10/23/2023] [Indexed: 12/19/2023]
Abstract
Climate change poses a significant threat to the global ecosystem, prompting plants to use various adaptive mechanisms via molecular switches to combat biotic and abiotic stress factors. These switches activate stress-induced pathways by altering their configuration between stable states. In this review, we investigated the regulation of molecular switches in different plant species in response to stress, including the stress-regulated response of multiple switches in Arabidopsis thaliana. We also discussed techniques for developing stress-resilient crops using molecular switches through advanced biotechnological tools. The literature search, conducted using databases such as PubMed, Google Scholar, Web of Science, and SCOPUS, utilized keywords such as molecular switch, plant adaptation, biotic and abiotic stresses, transcription factors, Arabidopsis thaliana, and crop improvement. Recent studies have shown that a single molecular switch can regulate multiple stress networks, and multiple switches can regulate a single stress condition. This multifactorial understanding provides clarity to the switch regulatory network and highlights the interrelationships of different molecular switches. Advanced breeding techniques, along with genomic and biotechnological tools, have paved the way for further research on molecular switches in crop improvement. The use of synthetic biology in molecular switches will lead to a better understanding of plant stress biology and potentially bring forth a new era of stress-resilient, climate-smart crops worldwide.
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Affiliation(s)
- Tista Debnath
- Post Graduate Department of Botany, Brahmananda Keshab Chandra College, 111/2 B.T. Road, Bon-Hooghly, Kolkata, West Bengal, 700108, India
| | - Debasmita Ghosh Dhar
- Kataganj Spandan, Social Welfare Organization, Kalyani, West Bengal, 741250, India
| | - Priyanka Dhar
- Post Graduate Department of Botany, Brahmananda Keshab Chandra College, 111/2 B.T. Road, Bon-Hooghly, Kolkata, West Bengal, 700108, India.
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Galicia-Campos E, García-Villaraco A, Montero-Palmero MB, Gutiérrez-Mañero FJ, Ramos-Solano B. Bacillus G7 improves adaptation to salt stress in Olea europaea L. plantlets, enhancing water use efficiency and preventing oxidative stress. Sci Rep 2023; 13:22507. [PMID: 38110443 PMCID: PMC10728083 DOI: 10.1038/s41598-023-49533-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 12/09/2023] [Indexed: 12/20/2023] Open
Abstract
In addition to genetic adaptative mechanisms, plants retrieve additional help from the surrounding microbiome, especially beneficial bacterial strains (PGPB) that contribute to plant fitness by modulating plant physiology to fine-tune adaptation to environmental changes. The aim of this study was to determine the mechanisms by which the PGPB Bacillus G7 stimulates the adaptive mechanisms of Olea europaea plantlets to high-salinity conditions, exploring changes at the physiological, metabolic and gene expression levels. On the one hand, G7 prevented photosynthetic imbalance under saline stress, increasing the maximum photosynthetic efficiency of photosystem II (Fv/Fm) and energy dissipation (NPQ) and protecting against photooxidative stress. On the other hand, despite the decrease in effective PSII quantum yield (ΦPSII), net carbon fixation was significantly improved, resulting in significant increases in osmolytes and antioxidants, suggesting an improvement in the use of absorbed energy. Water use efficiency (WUE) was significantly improved. Strong genetic reprogramming was evidenced by the transcriptome that revealed involvement of the ABA-mediated pathway based on upregulation of ABA synthesis- and ABA-sensing-related genes together with a strong downregulation of the PLC2 phosphatase family, repressors of ABA-response elements and upregulation of ion homeostasis-related genes. The ion homeostasis response was activated faster in G7-treated plants, as suggested by qPCR data. All these results reveal the multitargeted improvement of plant metabolism under salt stress by Bacillus G7, which allows growth under water limitation conditions, an excellent trait to develop biofertilizers for agriculture under harsh conditions supporting the use of biofertilizers among the new farming practices to meet the increasing demand for food.
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Affiliation(s)
- Estrella Galicia-Campos
- Facultad de Farmacia, Universidad San Pablo-CEU Universities, Ctra. Boadilla del Monte km 5.3, Boadilla del Monte, 28668, Madrid, Spain
| | - Ana García-Villaraco
- Facultad de Farmacia, Universidad San Pablo-CEU Universities, Ctra. Boadilla del Monte km 5.3, Boadilla del Monte, 28668, Madrid, Spain
| | - Ma Belén Montero-Palmero
- Facultad de Farmacia, Universidad San Pablo-CEU Universities, Ctra. Boadilla del Monte km 5.3, Boadilla del Monte, 28668, Madrid, Spain
| | - F Javier Gutiérrez-Mañero
- Facultad de Farmacia, Universidad San Pablo-CEU Universities, Ctra. Boadilla del Monte km 5.3, Boadilla del Monte, 28668, Madrid, Spain
| | - Beatriz Ramos-Solano
- Facultad de Farmacia, Universidad San Pablo-CEU Universities, Ctra. Boadilla del Monte km 5.3, Boadilla del Monte, 28668, Madrid, Spain.
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Zhang J, Zhao H, Chen L, Lin J, Wang Z, Pan J, Yang F, Ni X, Wang Y, Wang Y, Li R, Pi E, Wang S. Multifaceted roles of WRKY transcription factors in abiotic stress and flavonoid biosynthesis. FRONTIERS IN PLANT SCIENCE 2023; 14:1303667. [PMID: 38169626 PMCID: PMC10758500 DOI: 10.3389/fpls.2023.1303667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024]
Abstract
Increasing biotic and abiotic stresses are seriously impeding the growth and yield of staple crops and threatening global food security. As one of the largest classes of regulators in vascular plants, WRKY transcription factors play critical roles governing flavonoid biosynthesis during stress responses. By binding major W-box cis-elements (TGACCA/T) in target promoters, WRKYs modulate diverse signaling pathways. In this review, we optimized existing WRKY phylogenetic trees by incorporating additional plant species with WRKY proteins implicated in stress tolerance and flavonoid regulation. Based on the improved frameworks and documented results, we aim to deduce unifying themes of distinct WRKY subfamilies governing specific stress responses and flavonoid metabolism. These analyses will generate experimentally testable hypotheses regarding the putative functions of uncharacterized WRKY homologs in tuning flavonoid accumulation to enhance stress resilience.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Erxu Pi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Shang Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
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Liu X, Zhong X, Liao J, Ji P, Yang J, Cao Z, Duan X, Xiong J, Wang Y, Xu C, Yang H, Peng B, Jiang K. Exogenous abscisic acid improves grain filling capacity under heat stress by enhancing antioxidative defense capability in rice. BMC PLANT BIOLOGY 2023; 23:619. [PMID: 38057725 DOI: 10.1186/s12870-023-04638-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Heat stress is a major restrictive factor that causes yield loss in rice. We previously reported the priming effect of abscisic acid (ABA) on rice for enhanced thermotolerance at the germination, seedling and heading stages. In the present study, we aimed to understand the priming effect and mechanism of ABA on grain filling capacity in rice under heat stress. RESULTS Rice plants were pretreated with distilled water, 50 μM ABA and 10 μM fluridone by leaf spraying at 8 d or 15 d after initial heading (AIH) stage and then were subjected to heat stress conditions of 38 °C day/30 °C night for 7 days, respectively. Exogenous ABA pretreatment significantly super-activated the ABA signaling pathway and improved the SOD, POD, CAT and APX enzyme activity levels, as well as upregulated the ROS-scavenging genes; and decreased the heat stress-induced ROS content (O2- and H2O2) by 15.0-25.5% in rice grain under heat stress. ABA pretreatment also increased starch synthetase activities in rice grain under heat stress. Furthermore, ABA pretreatment significantly improved yield component indices and grain yield by 14.4-16.5% under heat stress. ABA pretreatment improved the milling quality and the quality of appearance and decreased the incidence of chalky kernels and chalkiness in rice grain and improved the rice grain cooking quality by improving starch content and gel consistence and decreasing the amylose percentage under heat stress. The application of paraquat caused overaccumulation of ROS, decreased starch synthetase activities and ultimately decreased starch content and grain yield. Exogenous antioxidants decreased ROS overaccumulation and increased starch content and grain yield under heat stress. CONCLUSION Taken together, these results suggest that exogenous ABA has a potential priming effect for enhancing rice grain filling capacity under heat stress at grain filling stage mainly by inhibiting ROS overaccumulation and improving starch synthetase activities in rice grain.
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Affiliation(s)
- Xiaolong Liu
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China.
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China.
| | - Xin Zhong
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Jingpeng Liao
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Ping Ji
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Jinshuo Yang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Zhiruo Cao
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Ximiao Duan
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Junru Xiong
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Ying Wang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Chen Xu
- Institute of Agricultural Resources and Environment, Jilin Academy of Agriculture Sciences, Jilin, 130033, Changchun, China
| | - Hongtao Yang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China
| | - Bo Peng
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China
| | - Kai Jiang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China
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Liu H, Wang X, Yang W, Liu W, Wang Y, Wang Q, Zhao Y. Identification of Whirly transcription factors in Triticeae species and functional analysis of TaWHY1-7D in response to osmotic stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1297228. [PMID: 38116153 PMCID: PMC10728677 DOI: 10.3389/fpls.2023.1297228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023]
Abstract
Osmotic stress poses a threat to the production and quality of crops. Whirly transcription factors have been investigated to enhance stress tolerance. In this study, a total of 18 Whirly genes were identified from six Triticeae species, which were classified into Whirly1 and Whirly2. The exon-intron structure, conserved motif, chromosomal location, collinearity, and regulatory network of Whirly genes were also analyzed. Real-time PCR results indicated that TaWHY1 genes exhibited higher expression levels in leaf sheaths and leaves during the seedling stage, while TaWHY2 genes were predominantly expressed in roots. Under PEG stress, the expression levels of TaWHY1-7A, TaWHY2-6A, TaWHY2-6B, and TaWHY2-6D were increased, TaWHY1-7D was reduced, and TaWHY1-4A had no significant change. All TaWHY genes were significantly up-regulated in response to NaCl stress treatment. In addition, TaWHY1-7A and TaWHY1-7D mainly enhanced the tolerance to oxidative stress in yeast cells. TaWHY2s mainly improved NaCl stress tolerance and were sensitive to oxidative stress in yeast cells. All TaWHYs slightly improved the yeast tolerance to d-sorbitol stress. The heterologous expression of TaWHY1-7D greatly improved drought and salt tolerance in transgenic Arabidopsis. In conclusion, these results provide the foundation for further functional study of Whirly genes aimed at improving osmotic stress tolerance in wheat.
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Affiliation(s)
- Hao Liu
- College of Agriculture, Ludong University, Yantai, China
| | - Xiaoyu Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Wenbo Yang
- Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Wenyan Liu
- College of Agriculture, Ludong University, Yantai, China
| | - Yanfang Wang
- College of Life Science, Ludong University, Yantai, China
| | - Qin Wang
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai, China
| | - Yanhong Zhao
- College of Agriculture, Ludong University, Yantai, China
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Pernicová N, Hlaváčová M, Findurová H, Čáslavský J, Urban O, Klem K, Trnka M. Grain carbon isotopes indicate the ability of wheat plants to maintain enhanced intrinsic water-use efficiency even after short-term exposure to high temperatures and drought. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 205:108155. [PMID: 37952365 DOI: 10.1016/j.plaphy.2023.108155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 09/29/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
Minimizing the impact of heat and drought on crop yields requires varieties with effective protective mechanisms. We tested the hypothesis that even a short-term high temperature amplifies the negative effects of reduced water availability on leaf gas-exchange, but can induce long-lasting improvement in plant water-use efficiency after the stress period. Accordingly, three common varieties of winter wheat (Triticum aestivum) were grown under field conditions. During the stem extension, the plants were exposed to distinct temperatures (daily maximum 26 vs. 38 °C), water availabilities (75% of field water capacity vs. permanent wilting point), and their combination for 14 days. All treatments reduced light-saturated rates of CO2 assimilation and transpiration, particularly when heat and drought were combined. Drought enhanced water-use efficiency (WUE) in all varieties (31.4-36.4%), but not at high temperatures (decrease by 17-52%). Intrinsic WUE (iWUE), determined from the stable carbon isotope composition of grains, was enhanced by 7.9-37% in all treatments and varieties; however, not all changes were significant. The combination of heat and drought tended to increase total protein content in grains but reduced spike productivity. Noticeably, the strongest decline in spike productivity was observed in Elan - the variety displaying the smallest enhancement of iWUE, while it was negligible in Pannonia which shows the most pronounced improvement of iWUE. We conclude that even several hot and dry days can improve iWUE for the rest of the vegetation season. This improvement, however, does not necessarily lead to increased crop productivity possibly due to physiological trade-offs.
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Affiliation(s)
- Natálie Pernicová
- Mendel University in Brno, Department of Agrosystems and Bioclimatology, Zemědělská 1, CZ-613 00, Brno, Czech Republic; Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic
| | - Marcela Hlaváčová
- Mendel University in Brno, Department of Agrosystems and Bioclimatology, Zemědělská 1, CZ-613 00, Brno, Czech Republic; Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic
| | - Hana Findurová
- Mendel University in Brno, Department of Agrosystems and Bioclimatology, Zemědělská 1, CZ-613 00, Brno, Czech Republic; Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic
| | - Josef Čáslavský
- Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic
| | - Otmar Urban
- Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic.
| | - Karel Klem
- Mendel University in Brno, Department of Agrosystems and Bioclimatology, Zemědělská 1, CZ-613 00, Brno, Czech Republic; Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic
| | - Miroslav Trnka
- Mendel University in Brno, Department of Agrosystems and Bioclimatology, Zemědělská 1, CZ-613 00, Brno, Czech Republic; Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-603 00, Brno, Czech Republic
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Li L, Yang L, Fan D, Jin J, Xiaokelaiti S, He Y, Hao Q. Genome-wide analysis of ALDH gene family in jujube and identification of ZjALDH3F3 for its important role in high-temperature tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 205:108196. [PMID: 38000236 DOI: 10.1016/j.plaphy.2023.108196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/05/2023] [Accepted: 11/12/2023] [Indexed: 11/26/2023]
Abstract
Aldehyde dehydrogenases (ALDHs) are NAD(P)-dependent enzymes that oxidize aliphatic and aromatic aldehydes. They play crucial roles in various biological processes and plant responses to stress. The impact of high temperatures on jujube quality and yield has been well documented. Nevertheless, the involvement of ALDHs in the response to heat stress remains poorly understood. This study aimed to identify ZjALDHs in the jujube genome (Ziziphus jujuba var. spinosa) and conducted in silico analyses. Phylogenetic analyses indicated that ALDHs in plants, including jujube, can be divided into ten families, and members from the same family share conserved gene and protein structures. Quantitative real-time PCR (qRT-PCR) and β-glucuronidase (GUS) histochemical staining were used to analyze the expression patterns of ZjALDHs in response to elevated temperatures. We identified a ZjALDH (ZjALDH3F3) gene displaying a significant upregulation and down-regulation, respectively in heat-resistant (HR) and heat-sensitive (HS) jujube in response to heat treatments. Such specific responses are probably attributed to the different heat-responsive cis-elements of ZjALDH3F3 in HR and HS jujubes. ZjALDH3F3 over-expressed in tobacco increased heat tolerance, as evidenced by the reduced accumulation of reactive oxygen species (ROS) and elevated activity of antioxidant enzymes. The qRT-PCR results indicated that the expression of antioxidant enzymes, abscisic acid (ABA), and stress-responsive genes was enhanced in transgenic tobacco. This study sheds novel light on the function of ZjALDHs in heat resistance of jujube.
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Affiliation(s)
- Lili Li
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Scientific Observing and Experimental Station of Pomology (Xinjiang), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Lei Yang
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Scientific Observing and Experimental Station of Pomology (Xinjiang), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Dingyu Fan
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Scientific Observing and Experimental Station of Pomology (Xinjiang), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Juan Jin
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Scientific Observing and Experimental Station of Pomology (Xinjiang), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Subina Xiaokelaiti
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Scientific Observing and Experimental Station of Pomology (Xinjiang), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Yanjun He
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
| | - Qing Hao
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Scientific Observing and Experimental Station of Pomology (Xinjiang), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
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Ma L, Li X, Zhang J, Yi D, Li F, Wen H, Liu W, Wang X. MsWRKY33 increases alfalfa (Medicago sativa L.) salt stress tolerance through altering the ROS scavenger via activating MsERF5 transcription. PLANT, CELL & ENVIRONMENT 2023; 46:3887-3901. [PMID: 37656830 DOI: 10.1111/pce.14703] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/10/2023] [Accepted: 08/15/2023] [Indexed: 09/03/2023]
Abstract
Alfalfa (Medicago sativa L.) is considered to be the most important forage crop on a global scale. Nevertheless, soil salinity significantly decreases productivity, seriously threatening food security worldwide. One viable strategy is to explore salt stress-responsive factors and elucidate their underlying molecular mechanism, and utilize them in further alfalfa breeding. In the present study, we designated MsWRKY33 as a representative salt stress-responsive factor preferentially expressed in alfalfa roots and leaves. Subsequently, it was demonstrated that MsWRKY33 was localized in the cell nucleus, and functioned as a transcriptional activator of the W-box element. Transgenic alfalfa overexpressing MsWRKY33 displayed enhanced salt stress tolerance and antioxidant activities with no significant difference in other agronomic traits. Transcriptome profiling of MsWRKY33 transgenic alfalfa under control and salt treatment unveiled significantly altered expression of reactive oxygen species (ROS) scavenger genes in transgenic alfalfa. Subsequent examination revealed that MsWRKY33 binded to the promoter of MsERF5, activating its expression and consequently fine-tuning the ROS-scavenging enzyme activity. Furthermore, MsWRKY33 interacted with the functional fragment of MsCaMBP25, which participates in Ca2+ signaling transduction. Collectively, this research offers new insight into the molecular mechanism of alfalfa salt stress tolerance and highlights the potential utility of MsWRKY33 in alfalfa breeding.
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Affiliation(s)
- Lin Ma
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xin Li
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jinjin Zhang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dengxia Yi
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Feng Li
- Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan plateau, Qinghai Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, China
- Beijing Cuihu Agricultural Technology Co., Ltd, Beijing, China
| | - Hongyu Wen
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wenhui Liu
- Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan plateau, Qinghai Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, China
| | - Xuemin Wang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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Xie W, Cao W, Lu S, Zhao J, Shi X, Yue X, Wang G, Feng Z, Hu K, Chen Z, Zuo S. Knockout of transcription factor OsERF65 enhances ROS scavenging ability and confers resistance to rice sheath blight. MOLECULAR PLANT PATHOLOGY 2023; 24:1535-1551. [PMID: 37776021 PMCID: PMC10632786 DOI: 10.1111/mpp.13391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/07/2023] [Accepted: 09/09/2023] [Indexed: 10/01/2023]
Abstract
Rice sheath blight (ShB) is a devastating disease that severely threatens rice production worldwide. Induction of cell death represents a key step during infection by the ShB pathogen Rhizoctonia solani. Nonetheless, the underlying mechanisms remain largely unclear. In the present study, we identified a rice transcription factor, OsERF65, that negatively regulates resistance to ShB by suppressing cell death. OsERF65 was significantly upregulated by R. solani infection in susceptible cultivar Lemont and was highly expressed in the leaf sheath. Overexpression of OsERF65 (OsERF65OE) decreased rice resistance, while the knockout mutant (oserf65) exhibited significantly increased resistance against ShB. The transcriptome assay revealed that OsERF65 repressed the expression of peroxidase genes after R. solani infection. The antioxidative enzyme activity was significantly increased in oserf65 plants but reduced in OsERF65OE plants. Consistently, hydrogen peroxide content was apparently reduced in oserf65 plants but accumulated in OsERF65OE plants. OsERF65 directly bound to the GCC box in the promoter regions of four peroxidase genes and suppressed their transcription, reducing the ability to scavenge reactive oxygen species (ROS). The oserf65 mutant exhibited a slight decrease in plant height but increased grain yield. Overall, our results revealed an undocumented role of OsERF65 that acts as a crucial regulator of rice resistance to R. solani and a potential target for improving both ShB resistance and rice yield.
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Affiliation(s)
- Wenya Xie
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
- Co‐Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu ProvinceYangzhou UniversityYangzhouChina
| | - Wenlei Cao
- College of Tourism and Cuisine, Yangzhou UniversityYangzhouChina
| | - Shuaibing Lu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
| | - Jianhua Zhao
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
| | - Xiaopin Shi
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
| | - Xuanyu Yue
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
| | - Guangda Wang
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
| | - Zhiming Feng
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
- Co‐Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu ProvinceYangzhou UniversityYangzhouChina
| | - Keming Hu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
- Co‐Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu ProvinceYangzhou UniversityYangzhouChina
| | - Zongxiang Chen
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
- Co‐Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu ProvinceYangzhou UniversityYangzhouChina
| | - Shimin Zuo
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhouChina
- Co‐Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu ProvinceYangzhou UniversityYangzhouChina
- Joint International Research Laboratory of Agriculture and Agri‐Product Safety, the Ministry of Education of ChinaInstitutes of Agricultural Science and Technology Development, Yangzhou UniversityYangzhouChina
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128
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Kononenko NV, Lazareva EM, Fedoreyeva LI. Mechanisms of Antioxidant Resistance in Different Wheat Genotypes under Salt Stress and Hypoxia. Int J Mol Sci 2023; 24:16878. [PMID: 38069196 PMCID: PMC10707134 DOI: 10.3390/ijms242316878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/23/2023] [Accepted: 11/26/2023] [Indexed: 12/18/2023] Open
Abstract
Various stressors lead to an increase in ROS and damage to plant tissues. Plants have a powerful antioxidant system (AOS), which allows them to neutralize excess ROS. We detected an intense fluorescent glow of ROS in the cells of the cap, meristem, and elongation zones in the roots of wheat Triticum aestivum (Orenburgskaya 22 variety) and Triticum durum (Zolotaya variety). An increase in ROS was accompanied by DNA breaks in the nuclei of wheat root cells, the release of cytochrome c from mitochondria into the cytoplasm, and the translocation of phosphatidylserine into the outer layer of the plasma membrane under salt stress and hypoxia. The different resistances of the two wheat varieties to different abiotic stresses were revealed. The soft wheat variety Orenburgskaya 22 showed high resistance to salt stress but sensitivity to hypoxia, and the durum wheat variety Zolotaya showed tolerance to hypoxia but high sensitivity to salt stress. Different activations of AOS components (GSH, MnSOD, Cu/ZnSOD, CAT, PX, GPX, and GST) were revealed in different wheat genotypes. The basis for the tolerance of the Zolotaya variety to hypoxia is the high content of glutathione (GSH) and the activation of glutathione-dependent enzymes. One of the mechanisms of high resistance to salt stress in the Orenburgskaya 22 variety is a decrease in the level of ROS as a result of the increased activity of the MnSOD and Cu/ZnSOD genes. Identifying the mechanisms of plant tolerance to abiotic stress is the most important task for improving breeding varieties of agricultural plants and increasing their yield.
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Affiliation(s)
- Neonila V. Kononenko
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (N.V.K.); (E.M.L.)
| | - Elena M. Lazareva
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (N.V.K.); (E.M.L.)
- Biological Department, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
| | - Larisa I. Fedoreyeva
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (N.V.K.); (E.M.L.)
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129
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Pan T, Chen X, Kong C, Gao D, Liu W, Liao H, Junaid M, Wang J. Single and combined toxicity of polystyrene nanoplastics and PCB-52 to the aquatic duckweed Spirodela polyrhiza. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:166482. [PMID: 37619732 DOI: 10.1016/j.scitotenv.2023.166482] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/15/2023] [Accepted: 08/20/2023] [Indexed: 08/26/2023]
Abstract
As nanoplastics and persistent organic pollutants are broadly distributed in aquatic ecosystems and pose a potential threat to ecosystem, most pertinent studies have focused on aquatic animals, while studies on freshwater plants have been rarely reported. Therefore, we analyzed the single and combined toxicological impacts of various concentrations of 80 nm polystyrene nanoplastics (PS-NPs) including 0.5, 5, 10, and 20 mg/L and polychlorinated biphenyl-52 (PCB-52, 2,2',5,5'- tetrachlorobiphenyl) at 0.1 mg/L on the aquatic plant Spirodela polyrhiza (S. polyrhiza) after a 10-day hydroponic experiment. Laser confocal scanning microscopy (LCSM) showed the accumulation of PS-NPs mainly in the root surface and the lower epidermis of leaves, and the enrichment of PS-NPs was aggravated by the presence of PCB-52. PS-NPs at 10 mg/L and 20 mg/L alone or in combination with PCB-52 notably inhibited the growth of S. polyrhiza, reduced the synthesis of chlorophylls a and b, and increased the activities of superoxide dismutase (SOD) and peroxidase (POD) as well as malondialdehyde (MDA) levels, and induced osmotic imbalance (soluble protein and soluble sugar contents) (p < 0.05). However, a single treatment with low levels of PS-NPs had positive effects on the growth (0.5 mg/L) and photosynthetic systems (0.5, 5 mg/L) of S. polyrhiza, while co-exposure exacerbated the damaging impacts of PS-NPs on the antioxidant defense system of S. polyrhiza, which was more pronounced in the roots. Furthermore, correlation analysis revealed that plant growth parameters were positively correlated with chlorophyll a and b content and negatively correlated with soluble sugars, antioxidant enzymes, lipid peroxidation, and carotenoid content (p < 0.05). These results provide data to improve the understanding of the single and combined ecotoxicological effects of nanoplastics and polychlorinated biphenyls (PCBs) in aquatic plants and their application in phytoremediation measures.
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Affiliation(s)
- Ting Pan
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Xikun Chen
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Chunmiao Kong
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Dandan Gao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Wanjing Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Hongping Liao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Muhammad Junaid
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jun Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou 510006, China.
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130
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Jampoh EA, Sáfrán E, Babinyec-Czifra D, Kristóf Z, Krárné Péntek B, Fábián A, Barnabás B, Jäger K. Morpho-Anatomical, Physiological and Biochemical Adjustments in Response to Heat and Drought Co-Stress in Winter Barley. PLANTS (BASEL, SWITZERLAND) 2023; 12:3907. [PMID: 38005804 PMCID: PMC10674999 DOI: 10.3390/plants12223907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
This study aimed to investigate the combined effect of high temperatures 10 °C above the optimum and water withholding during microgametogenesis on vegetative processes and determine the response of winter barley genotypes with contrasting tolerance. For this purpose, two barley varieties were analyzed to compare the effect of heat and drought co-stress on their phenology, morpho-anatomy, physiological and biochemical responses and yield constituents. Genotypic variation was observed in response to heat and drought co-stress, which was attributed to differences in anatomy, ultrastructure and physiological and metabolic processes. The co-stress-induced reduction in relative water content, total soluble protein and carbohydrate contents, photosynthetic pigment contents and photosynthetic efficiency of the sensitive Spinner variety was significantly greater than the tolerant Lambada genotype. Based on these observations, it has been concluded that the heat-and-drought stress-tolerance of the Lambada variety is related to the lower initial chlorophyll content of the leaves, the relative resistance of photosynthetic pigments towards stress-triggered degradation, retained photosynthetic parameters and better-preserved leaf ultrastructure. Understanding the key factors underlying heat and drought co-stress tolerance in barley may enable breeders to create barley varieties with improved yield stability under a changing climate.
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Affiliation(s)
- Emmanuel Asante Jampoh
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
- Doctoral School of Horticultural Sciences, MATE Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary
| | - Eszter Sáfrán
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
| | - Dorina Babinyec-Czifra
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1053 Budapest, Hungary
| | - Zoltán Kristóf
- Department of Plant Anatomy, ELTE Eötvös Loránd University, 1053 Budapest, Hungary;
| | - Barbara Krárné Péntek
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
| | - Attila Fábián
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
| | - Beáta Barnabás
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
| | - Katalin Jäger
- Biological Resources Department, HUN-REN Centre for Agricultural Research, 2462 Martonvásár, Hungary; (E.A.J.); (E.S.); (D.B.-C.); (B.K.P.); (A.F.); (B.B.)
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131
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Nawaz M, Sun J, Shabbir S, Khattak WA, Ren G, Nie X, Bo Y, Javed Q, Du D, Sonne C. A review of plants strategies to resist biotic and abiotic environmental stressors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165832. [PMID: 37524179 DOI: 10.1016/j.scitotenv.2023.165832] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
Plants exposed to a variety of abiotic and biotic stressors including environmental pollution and global warming pose significant threats to biodiversity and ecosystem services. Despite substantial literature documenting how plants adapt to distinct stressors, there still is a lack of knowledge regarding responses to multiple stressors and how these affects growth and development. Exposure of plants to concurrent biotic and abiotic stressors such as cadmium and drought, leads to pronounced inhibition in above ground biomass, imbalance in oxidative homeostasis, nutrient assimilation and stunted root growth, elucidating the synergistic interactions of multiple stressors culminating in adverse physiological outcomes. Impact of elevated heavy metal and water deficit exposure extends beyond growth and development, influencing the biodiversity of the microenvironment including the rhizosphere nutrient profile and microbiome. These findings have significant implications for plant-stress interactions and ecosystem functioning that prompt immediate action in order to eliminate effect of pollution and address global environmental issues to promote sustainable tolerance for multiple stress combinations in plants. Here, we review plant tolerance against stress combinations, highlighting the need for interdisciplinary approaches and advanced technologies, such as omics and molecular tools, to achieve a comprehensive understanding of underlying stress tolerance mechanisms. To accelerate progress towards developing stress-tolerance in plants against multiple environmental stressors, future research in plant stress tolerance should adopt a collaborative approach, involving researchers from multiple disciplines with diverse expertise and resources.
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Affiliation(s)
- Mohsin Nawaz
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianfan Sun
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Samina Shabbir
- Department of Chemistry, The Women University Multan, Pakistan
| | - Wajid Ali Khattak
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Guangqian Ren
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaojun Nie
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy and Yangling Branch of China Wheat Improvement Center, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yanwen Bo
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qaiser Javed
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Daolin Du
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Christian Sonne
- Aarhus University, Faculty of Technological Sciences, Department of Ecoscience, Frederiksborgvej 399, 358, DK-4000 Roskilde, Denmark; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand 248007, India.
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132
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Shen J, Wang X, Song H, Wang M, Niu T, Lei H, Qin C, Liu A. Physiology and transcriptomics highlight the underlying mechanism of sunflower responses to drought stress and rehydration. iScience 2023; 26:108112. [PMID: 37860690 PMCID: PMC10583116 DOI: 10.1016/j.isci.2023.108112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/15/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023] Open
Abstract
Drought can adversely influence the crop growth and production. Accordingly, sunflowers have strong adaptability to drought; hence, we conducted analyses for sunflower seedlings with drought stress and rehydration drought acclimation through physiological measurements and transcriptomics. It showed that drought can cause the accumulation of ROS and enhance the activity of antioxidant enzymes and the content of osmolytes. After rehydration, the contents of ROS and MDA were significantly reduced concomitant with increased antioxidant activity and osmotic adjustment. Totally, 2,589 DEGs were identified among treatments. Functional enrichment analysis showed that DEGs were mainly involved in plant hormone signal transduction, MAPK signaling, and biosynthesis of secondary metabolites. Comparison between differentially spliced genes and DEGs indicated that bHLH025, NAC53, and SINAT3 may be pivotal genes involved in sunflower drought resistance. Our results not only highlight the underlying mechanism of drought stress and rehydration in sunflower but also provide a theoretical basis for crop genetic breeding.
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Affiliation(s)
- Jie Shen
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
| | - Xi Wang
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
| | - Huifang Song
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
| | - Mingyang Wang
- School of Life Science, Shanxi Normal University, Taiyuan 030031, China
| | - Tianzeng Niu
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
| | - Haiying Lei
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
| | - Cheng Qin
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
| | - Ake Liu
- Department of Life Sciences, Changzhi University, Changzhi 046011, China
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133
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Ding M, Jia D, Yang M, Yu Y, Lin G, Zhang X. A Detailed Insight into the Effects of Morphologies of Cerium Oxide on Fenton-like Reactions for Different Applications. Chemphyschem 2023; 24:e202300211. [PMID: 37610324 DOI: 10.1002/cphc.202300211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/24/2023]
Abstract
As an exceptional Fenton-like reagent, cerium oxide (CeO2 ) finds applications in biomedical science and organic pollutants treatment. The Fenton-like reaction catalyzed by CeO2 typically encompasses two distinct processes: one resembling the classical Fenton reaction, wherein cerium (Ce3+ ) triggers the decomposition of hydrogen peroxide (H2 O2 ) to yield reactive oxygen species (ROS), and the other involves the complexation of H2 O2 on the Ce3+ surface, leading to the formation of peroxides. However, the influence of diverse CeO2 morphologies on these two reaction pathways has not been comprehensively explored. In this study, CeO2 exhibiting three typical morphologies, rods, cubes, and spheres, were prepared. The generation of ROS and peroxides was evaluated using the 3,3,5,5-tetramethylbenzidine (TMB) oxidation reaction and the reduction current of H2 O2 , respectively. Moreover, the impacts of pH variations and CeO2 /H2 O2 concentrations on the production and conversion of these two reaction products were investigated. To corroborate the distinctions between the resultant products and their applicability, apoptosis assays and acid orange 7 (AO7) degradation analyses were performed. Notably, CeO2 rods exhibited the highest proportion of Ce3+ , predominantly engaging in complexation with H2 O2 to foster peroxide formation, thereby facilitating the robust degradation of AO7. However, the generated peroxides appeared to occupy Ce3+ sites, thereby impeding the H2 O2 decomposition process. Conversely, Ce3+ species on the surface of CeO2 cubes were primarily involved in H2 O2 decomposition, leading to heightened ROS production, and thus showcasing substantial potential for damaging A549 tumor cells. It is worth noting that the ability of these Ce3+ species to form peroxides through complexation with H2 O2 was comparatively reduced. In summation, this study sheds light on the intricate interplay between distinct CeO2 morphologies and their divergent impacts on Fenton-like reactions. These findings expand our comprehension of the influences on its reactivity of CeO2 morphologies and open new insights for applications in diverse domains, from organic dye degradation to tumor therapy.
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Affiliation(s)
- Meijuan Ding
- Department of Respiratory Medicine, Cancer Hospital of Harbin Medical University, 150 Haping Road, Nangang District, 150001, Harbin, China
- Department of Oncology, Second Affifiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, 150086, Harbin, China
| | - Dexin Jia
- Department of Respiratory Medicine, Cancer Hospital of Harbin Medical University, 150 Haping Road, Nangang District, 150001, Harbin, China
| | - Min Yang
- Department of Respiratory Medicine, Cancer Hospital of Harbin Medical University, 150 Haping Road, Nangang District, 150001, Harbin, China
| | - Yan Yu
- Department of Respiratory Medicine, Cancer Hospital of Harbin Medical University, 150 Haping Road, Nangang District, 150001, Harbin, China
| | - Guochang Lin
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, 92 Xidazhi Road, Nangang District, 150001, Harbin, China
| | - Xuelin Zhang
- MEMS Center, Harbin Institute of Technology, 92 Xidazhi Road, Nangang District, 150001, Harbin, China
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134
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Wang J, Zhang C, Li H, Xu Y, Zhang B, Zheng F, Zhao B, Zhang H, Zhao H, Liu B, Xiao M, Zhang Z. OsJAB1 Positively Regulates Ascorbate Biosynthesis and Negatively Regulates Salt Tolerance Due to Inhibiting Early-Stage Salt-Induced ROS Accumulation in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:3859. [PMID: 38005759 PMCID: PMC10675544 DOI: 10.3390/plants12223859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023]
Abstract
Reactive oxygen species (ROS) play dual roles in plant stress response, but how plants modulate the dual roles of ROS in stress response is still obscure. OsJAB1 (JUN-activation-domain-binding protein 1) encodes the rice CSN5 (COP9 signalsome subunit 5). This study showed that, similar to the Arabidopsis homolog gene CSN5B, OsJAB1-overexpressing (driven by a CaMV 35S promoter) plants (OEs) impaired rice salt stress tolerance; in contrast, OsJAB1-inhibited-expression (using RNA-interfering technology) plants (RIs) enhanced rice salt stress tolerance. Differing from CSN5B that negatively regulated ascorbate (Asc) biosynthesis, Asc content increased in OEs and decreased in RIs. ROS analysis showed that RIs clearly increased, but OEs inhibited ROS accumulation at the early stage of salt treatment; in contrast, RIs clearly decreased, but OEs promoted ROS accumulation at the late stage of salt treatment. The qPCR revealed that OEs decreased but RIs enhanced the expressions of ROS-scavenging genes. This indicated that OsJAB1 negatively regulated rice salt stress tolerance by suppressing the expression of ROS-scavenging genes. This study provided new insights into the CSN5 homologous protein named OsJAB1 in rice, which developed different functions during long-term evolution. How OsJAB1 regulates the Asc biosynthesis that coordinates the balance between cell redox signaling and ROS scavenging needs to be investigated in the future.
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Affiliation(s)
- Jiayi Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Chuanyu Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Hua Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Yuejun Xu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
- National Key Facility of Crop Gene Resources and Genetic Improvement, Sanya 571763, China
| | - Bo Zhang
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Fuyu Zheng
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Beiping Zhao
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Haiwen Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Hui Zhao
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China;
| | - Baohai Liu
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Minggang Xiao
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Zhijin Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
- National Key Facility of Crop Gene Resources and Genetic Improvement, Sanya 571763, China
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135
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Torabi S, Seifi S, Geddes-McAlister J, Tenuta A, Wally O, Torkamaneh D, Eskandari M. Soybean-SCN Battle: Novel Insight into Soybean's Defense Strategies against Heterodera glycines. Int J Mol Sci 2023; 24:16232. [PMID: 38003422 PMCID: PMC10671692 DOI: 10.3390/ijms242216232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/28/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Soybean cyst nematode (SCN, Heterodera glycines, Ichinohe) poses a significant threat to global soybean production, necessitating a comprehensive understanding of soybean plants' response to SCN to ensure effective management practices. In this study, we conducted dual RNA-seq analysis on SCN-resistant Plant Introduction (PI) 437654, 548402, and 88788 as well as a susceptible line (Lee 74) under exposure to SCN HG type 1.2.5.7. We aimed to elucidate resistant mechanisms in soybean and identify SCN virulence genes contributing to resistance breakdown. Transcriptomic and pathway analyses identified the phenylpropanoid, MAPK signaling, plant hormone signal transduction, and secondary metabolite pathways as key players in resistance mechanisms. Notably, PI 437654 exhibited complete resistance and displayed distinctive gene expression related to cell wall strengthening, oxidative enzymes, ROS scavengers, and Ca2+ sensors governing salicylic acid biosynthesis. Additionally, host studies with varying immunity levels and a susceptible line shed light on SCN pathogenesis and its modulation of virulence genes to evade host immunity. These novel findings provide insights into the molecular mechanisms underlying soybean-SCN interactions and offer potential targets for nematode disease management.
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Affiliation(s)
- Sepideh Torabi
- Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Soren Seifi
- Aurora Cannabis Inc., Comox, BC V9M 4A1, Canada;
| | | | - Albert Tenuta
- Ontario Ministry of Agriculture, Food and Rural Affairs, Ridgetown, ON N0P 2C0, Canada;
| | - Owen Wally
- Harrow Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N0R 1G0, Canada;
| | - Davoud Torkamaneh
- Département de Phytologie, Université Laval, Québec City, QC G1V 0A6, Canada;
| | - Milad Eskandari
- Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada;
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136
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Michonneau P, Fleurat-Lessard P, Roblin G, Béré E. CuZn-superoxide dismutase is differentially modified in localization and expression by three abiotic stresses in miniature rose bushes. Micron 2023; 174:103524. [PMID: 37657168 DOI: 10.1016/j.micron.2023.103524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 09/03/2023]
Abstract
Three abiotic stresses, copper application (CS), mechanical rubbing (MS) and water deprivation (WS) applied on miniature rose bushes specifically activate the expression of the CuZn-Superoxide dismutase (SOD). The Cu/Zn-SOD protein immunodetected in the 4th internode was shown engaged in lignification in phloem, cambium and xylem cells. The SOD occurrence was detailed in the vessel associated cells (VACs), using immunogold labeling observed in transmission electron microscopy. The enzyme was detected in mitochondria, plastids, Golgi vesicles, endoplasmic reticulum and plasma membrane. In addition, in pit-fields without plasmodesmata linking vessel associated cells to vessels, the abiotic stresses increased the transfer apparatus volume. The content in unmethylatedpectins increased in wall ingrowths after CS and MS, but not in WS. In addition to the different localization, the SOD was differentially overexpressed according to the applied stress: an isoform detected at 17 kDa under CuSO4 application, two isoforms respectively detected at 20 and 17 kDa under MS and detected at 17 and 15 kDa under WS. Notably, the only 17 kDa isoform was detected in plasma membrane vesicles from plants submitted to the three stresses. Thus, by increasing the transfer apparatus development, the key role of VACs was emphasized in establishing an adaptative response to abiotic stresses, in miniature rose bushes. Additionally, it has been observed that the differential SOD localization under such stresses sustained the regulatory function of VACs in the transitory sink function of xylem.
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Affiliation(s)
- Philippe Michonneau
- SCARA, Zone Industrielle de Villette, 10700 Arcis-sur-Aube, France; ImageUP, Plate-forme d'imagerie de l'Université de Poitiers, Pôle Biologie Santé, 1 rue Georges Bonnet, Bât. B37, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Pierrette Fleurat-Lessard
- ImageUP, Plate-forme d'imagerie de l'Université de Poitiers, Pôle Biologie Santé, 1 rue Georges Bonnet, Bât. B37, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Gabriel Roblin
- ImageUP, Plate-forme d'imagerie de l'Université de Poitiers, Pôle Biologie Santé, 1 rue Georges Bonnet, Bât. B37, TSA 51106, 86073 Poitiers Cedex 9, France
| | - Emile Béré
- ImageUP, Plate-forme d'imagerie de l'Université de Poitiers, Pôle Biologie Santé, 1 rue Georges Bonnet, Bât. B37, TSA 51106, 86073 Poitiers Cedex 9, France.
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137
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Hernandez JS, Dziubek D, Schröder L, Seydel C, Kitashova A, Brodsky V, Nägele T. Natural variation of temperature acclimation of Arabidopsis thaliana. PHYSIOLOGIA PLANTARUM 2023; 175:e14106. [PMID: 38148233 DOI: 10.1111/ppl.14106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/28/2023]
Abstract
Acclimation is a multigenic trait by which plants adjust photosynthesis and metabolism to cope with a changing environment. Here, natural variations of photosynthetic efficiency and acclimation of the central carbohydrate metabolism were analyzed in response to low and elevated temperatures. For this, 18 natural accessions of Arabidopsis thaliana, originating from Cape Verde Islands and Europe, were grown at 22°C before being exposed to 4°C and 34°C for cold and heat acclimation, respectively. Absolute amounts of carbohydrates were quantified together with their subcellular distribution across plastids, cytosol and vacuole. Linear electron transport rates (ETRs) were determined together with the maximum quantum efficiency of photosystem II (Fv/Fm) for all growth conditions and under temperature fluctuation. Under elevated temperature, ETR residuals under increasing photosynthetic photon flux densities significantly correlated with the degree of temperature fluctuation at the original habitat of accessions, indicating a geographical east/west gradient of photosynthetic acclimation capacities. Plastidial sucrose concentrations positively correlated with maximal ETRs under fluctuating temperature, indicating a stabilizing role within the chloroplast. Our findings revealed specific subcellular carbohydrate distributions that contribute differentially to the photosynthetic efficiency of natural Arabidopsis thaliana accessions across a longitudinal gradient. This sheds light on the relevance of subcellular metabolic regulation for photosynthetic performance in a fluctuating environment and supports the physiological interpretation of naturally occurring genetic variation of temperature tolerance and acclimation.
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Affiliation(s)
- Jakob Sebastian Hernandez
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
| | - Dejan Dziubek
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
| | - Laura Schröder
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
| | - Charlotte Seydel
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
- Faculty of Biology, Plant Development, Ludwig-Maximilians-Universität München, Planegg
| | - Anastasia Kitashova
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
| | - Vladimir Brodsky
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
| | - Thomas Nägele
- Faculty of Biology, Plant Evolutionary Cell Biology, Ludwig-Maximilians-Universität München, Planegg
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138
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Lee BR, Park SH, Muchlas M, La VH, Al Mamun M, Bae DW, Kim TH. Differential response of phenylpropanoid pathway as linked to hormonal change in two Brassica napus cultivars contrasting drought tolerance. PHYSIOLOGIA PLANTARUM 2023; 175:e14115. [PMID: 38148216 DOI: 10.1111/ppl.14115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/23/2023] [Accepted: 11/28/2023] [Indexed: 12/28/2023]
Abstract
Oilseed rape (Brassica napus L.) is a significant agro-economic crop with a wide range of uses. Drought is the most frequent unfavourable environmental stressor restraining its growth and development worldwide. This study was conducted to characterize the drought-responsive phenylpropanoid pathway and its link to hormonal changes in two cultivars, drought-resistant "Saturnin" and drought-susceptible "Mosa." Drought susceptibility in cv. Mosa was confirmed by its lower water use efficiency and higher lipid peroxidation levels with reactive oxygen species (ROS) accumulation. In cv. Saturnin, higher salicylic acid (SA) levels and expression of dehydration-responsive element binding 2 (DREB2) and non-expressor of pathogenesis-related gene 1 (NPR1) led to an upregulation of production of anthocyanin pigment 1 (PAP1) and phenylpropanoid pathway-related gene (CHS, F5H and COMT1) expression, increasing hydroxycinnamic acid and flavonoid compound concentrations. However, in cv. Mosa, higher increases in the activity of lignifying enzymes (polyphenol oxidase, coniferyl alcohol peroxidase, syringaldazine peroxidase, guaiacol peroxidase) and expression of the lignin synthesis-related gene cinnamyl alcohol dehydrogenase 2 (CAD2) were found along with greater increases in abscisic acid (ABA) levels and upregulation of ABA-responsive element binding 2 (AREB2) and basic helix-loop-helix transcription factor MYC2. These results indicate that drought-induced SA-mediated activation of the hydroxycinnamic acid and flavonoid pathways contributes to drought resistance, whereas ABA-mediated lignification contributes to drought susceptibility.
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Affiliation(s)
- Bok-Rye Lee
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju, Republic of Korea
- Institute of Environmentally-Friendly Agriculture (IEFA), Chonnam National University, Gwangju, Republic of Korea
| | - Sang-Hyun Park
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju, Republic of Korea
| | - Muchamad Muchlas
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju, Republic of Korea
| | - Van Hien La
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju, Republic of Korea
- Center of Crop Research for Adaptation to Climate Change (CRCC), Thai Nguyen University of Agriculture and Forestry, Vietnam
| | - Md Al Mamun
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju, Republic of Korea
| | - Dong-Won Bae
- Core-Facility Center for High-Tech Materials Analysis, Gyeongsang National University, Jinju, Republic of Korea
| | - Tae-Hwan Kim
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju, Republic of Korea
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139
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Iqbal H, Yaning C, Waqas M, Raza ST, Shareef M, Ahmad Z. Salinity and exogenous H 2 O 2 improve gas exchange, osmoregulation, and antioxidant metabolism in quinoa under drought stress. PHYSIOLOGIA PLANTARUM 2023; 175:e14057. [PMID: 38148196 DOI: 10.1111/ppl.14057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/17/2023] [Accepted: 10/13/2023] [Indexed: 12/28/2023]
Abstract
Climate change-induced concurrent drought and salinity stresses significantly threaten global crop yields, yet the physio-biochemical responses to combined stress in quinoa remain elusive. This study evaluated quinoa responses under four growth conditions: well-watered, drought stress, salt stress, and drought + salt stress with (15 mM) or without (0 mM) exogenous hydrogen peroxide (H2 O2 ) application. All examined stresses (alone or in combination) reduce quinoa growth and net photosynthesis, although salt stress was found to be less destructive than drought and combined stress. Strikingly, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), stomatal conductance (gs ), photosynthetic rate (PN ), K+ uptake, shoot height, shoot fresh, and dry weight were increased by 46.1%, 22.2%, 101.6%, 12.9%, 12.1%, 22.4%, 7.1%, 14%, and 16.4%, respectively, under combined stress compared to drought alone. In addition, exogenous H2 O2 effectively improved gaseous exchange, osmolytes' accumulation, and antioxidant activity, resulting in reduced lipid peroxidation, which eventually led to higher plant growth under all coercive conditions. The principle component analysis (PCA) indicated a strong positive correlation between antioxidant enzymes and inorganic ions, which contributed efficiently to osmotic adjustment, particularly under conditions of salinity followed by combined stress. In short, in combination, salt stress has the potential to mitigate drought-induced injuries by promoting the absorption of inorganic solutes for osmoregulation in quinoa plants. Furthermore, exogenous application of H2 O2 could be opted to enhance quinoa performance to increase its tolerance mechanism against drought and salinity, even under combined stress.
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Affiliation(s)
- Hassan Iqbal
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Chen Yaning
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Muhammad Waqas
- Department of Soil Science and Plants Nutrition, Hochschule Geisenheim University, Geiseneim, Germany
| | - Syed Turab Raza
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Institute of Biodiversity, Yunnan University, Kunming, China
| | | | - Zeeshan Ahmad
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
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140
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Song M, Hu N, Zhou S, Xie S, Yang J, Ma W, Teng Z, Liang W, Wang C, Bu M, Zhang S, Yang X, He D. Physiological and RNA-Seq Analyses on Exogenous Strigolactones Alleviating Drought by Improving Antioxidation and Photosynthesis in Wheat ( Triticum aestivum L.). Antioxidants (Basel) 2023; 12:1884. [PMID: 37891963 PMCID: PMC10604895 DOI: 10.3390/antiox12101884] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/10/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Drought poses a significant challenge to global wheat production, and the application of exogenous phytohormones offers a convenient approach to enhancing drought tolerance of wheat. However, little is known about the molecular mechanism by which strigolactones (SLs), newly discovered phytohormones, alleviate drought stress in wheat. Therefore, this study is aimed at elucidating the physiological and molecular mechanisms operating in wheat and gaining insights into the specific role of SLs in ameliorating responses to the stress. The results showed that SLs application upregulated the expression of genes associated with the antioxidant defense system (Fe/Mn-SOD, PER1, PER22, SPC4, CAT2, APX1, APX7, GSTU6, GST4, GOR, GRXC1, and GRXC15), chlorophyll biogenesis (CHLH, and CPX), light-harvesting chlorophyll A-B binding proteins (WHAB1.6, and LHC Ib-21), electron transfer (PNSL2), E3 ubiquitin-protein ligase (BB, CHIP, and RHY1A), heat stress transcription factor (HSFA1, HSFA4D, and HSFC2B), heat shock proteins (HSP23.2, HSP16.9A, HSP17.9A, HSP21, HSP70, HSP70-16, HSP70-17, HSP70-8, HSP90-5, and HSP90-6), DnaJ family members (ATJ1, ATJ3, and DJA6), as well as other chaperones (BAG1, CIP73, CIPB1, and CPN60I). but the expression level of genes involved in chlorophyll degradation (SGR, NOL, PPH, PAO, TIC55, and PTC52) as well as photorespiration (AGT2) was found to be downregulated by SLs priming. As a result, the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were enhanced, and chlorophyll content and photosynthetic rate were increased, which indicated the alleviation of drought stress in wheat. These findings demonstrated that SLs alleviate drought stress by promoting photosynthesis through enhancing chlorophyll levels, and by facilitating ROS scavenging through modulation of the antioxidant system. The study advances understandings of the molecular mechanism underlying SLs-mediated drought alleviation and provides valuable insights for implementing sustainable farming practice under water restriction.
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Affiliation(s)
- Miao Song
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
- Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450046, China
| | - Naiyue Hu
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Sumei Zhou
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
- Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450046, China
| | - Songxin Xie
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Jian Yang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Wenqi Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Zhengkai Teng
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Wenxian Liang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Chunyan Wang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Mingna Bu
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Shuo Zhang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
| | - Xiwen Yang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
- Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450046, China
| | - Dexian He
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (M.S.); (N.H.); (S.Z.); (S.X.); (J.Y.); (W.M.); (Z.T.); (W.L.); (C.W.); (M.B.); (S.Z.)
- Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450046, China
- Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450046, China
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141
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Shaffique S, Hussain S, Kang SM, Imran M, Injamum-Ul-Hoque M, Khan MA, Lee IJ. Phytohormonal modulation of the drought stress in soybean: outlook, research progress, and cross-talk. FRONTIERS IN PLANT SCIENCE 2023; 14:1237295. [PMID: 37929163 PMCID: PMC10623132 DOI: 10.3389/fpls.2023.1237295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/07/2023] [Indexed: 11/07/2023]
Abstract
Phytohormones play vital roles in stress modulation and enhancing the growth of plants. They interact with one another to produce programmed signaling responses by regulating gene expression. Environmental stress, including drought stress, hampers food and energy security. Drought is abiotic stress that negatively affects the productivity of the crops. Abscisic acid (ABA) acts as a prime controller during an acute transient response that leads to stomatal closure. Under long-term stress conditions, ABA interacts with other hormones, such as jasmonic acid (JA), gibberellins (GAs), salicylic acid (SA), and brassinosteroids (BRs), to promote stomatal closure by regulating genetic expression. Regarding antagonistic approaches, cytokinins (CK) and auxins (IAA) regulate stomatal opening. Exogenous application of phytohormone enhances drought stress tolerance in soybean. Thus, phytohormone-producing microbes have received considerable attention from researchers owing to their ability to enhance drought-stress tolerance and regulate biological processes in plants. The present study was conducted to summarize the role of phytohormones (exogenous and endogenous) and their corresponding microbes in drought stress tolerance in model plant soybean. A total of n=137 relevant studies were collected and reviewed using different research databases.
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Affiliation(s)
- Shifa Shaffique
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Saddam Hussain
- Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
| | - Sang-Mo Kang
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Muhamad Imran
- Biosafety Division, National Institute of Agriculture Science, Rural Development Administration, Jeonju, Republic of Korea
| | - Md Injamum-Ul-Hoque
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Muhammad Aaqil Khan
- Department of Chemical and Life Science, Qurtaba University of Science and Information Technology, Peshawar, Pakistan
| | - In-Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
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142
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Liu X, Cheng C, Min Y, Xie X, Muzahid ANM, Lv H, Tian H, Zhang C, Ye C, Cao S, Chen P, Zhong C, Li D. Increased ascorbic acid synthesis by overexpression of AcGGP3 ameliorates copper toxicity in kiwifruit. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132393. [PMID: 37660623 DOI: 10.1016/j.jhazmat.2023.132393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/13/2023] [Accepted: 08/23/2023] [Indexed: 09/05/2023]
Abstract
The widespread application of copper (Cu) -based fertilizers and pesticides could increase the accumulation of Cu in kiwifruit. According to a global survey, red- and yellow-fleshed kiwifruit contained more elevated amounts of Cu than green-fleshed kiwifruit due to weaker disease resistance and higher use of Cu pesticides. Intriguingly, our research revealed that external and endogenous ascorbic acid (AsA) reduced the phenotypic and physiological injury of Cu toxicity in kiwifruit. Cu stress assays and transcriptional analysis have shown that Cu treatment for 12 h significantly increased the AsA content in kiwifruit leaves and up-regulated key genes involved in AsA biosynthesis, such as GDP-L-galactose phosphorylase3 (GGP3) and GDP-mannose-3',5'-epimerase (GME). Overexpressing GGP3 in transgenic kiwifruit significantly increased the endogenous AsA content of kiwifruit, which was beneficial in mitigating Cu toxicity by decreasing levels of reactive oxygen species, malondialdehyde, and electrolyte leakage, as well as reducing damage to the chloroplast structure and photosystem II. This study presented a novel strategy to ameliorate plant Cu stress by increasing the endogenous antioxidant (AsA) content through transgenesis.
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Affiliation(s)
- Xiaoying Liu
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Chang Cheng
- College of Horticulture, Anhui Agricultural University, Hefei 230036, China
| | - Yan Min
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaodong Xie
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Abu Naim Md Muzahid
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Haiyan Lv
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Hua Tian
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Congxiao Zhang
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China
| | - Can Ye
- State Key Joint Laboratory of Environment Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Bejing 100871, China
| | - Shifeng Cao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Peng Chen
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China.
| | - Caihong Zhong
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China.
| | - Dawei Li
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430074, China.
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143
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Konieczna W, Mierek-Adamska A, Chojnacka N, Antoszewski M, Szydłowska-Czerniak A, Dąbrowska GB. Characterization of the Metallothionein Gene Family in Avena sativa L. and the Gene Expression during Seed Germination and Heavy Metal Stress. Antioxidants (Basel) 2023; 12:1865. [PMID: 37891944 PMCID: PMC10603854 DOI: 10.3390/antiox12101865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Metallothioneins (MTs) are a family of small proteins rich in cysteine residues. The sulfhydryl group of metallothioneins can bind to metal ions, maintaining metal homeostasis and protecting the cells from damage caused by toxic heavy metals. Moreover, MTs can function as reactive oxygen species scavengers since cysteine thiols undergo reversible and irreversible oxidation. Here, we identified 21 metallothionein genes (AsMTs) in the oat (Avena sativa L.) genome, which were divided into four types depending on the amino acid sequences of putative proteins encoded by identified genes. Analysis of promoter sequences showed that MTs might respond to a variety of stimuli, including biotic and abiotic stresses and phytohormones. The results of qRT-PCR showed that all four types of AsMTs are differentially expressed during the first 48 hours of seed germination. Moreover, stress induced by the application of zinc, cadmium, and a mixture of zinc and cadmium affects the expression of oat MTs variously depending on the MT type, indicating that AsMT1-4 fulfil different roles in plant cells.
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Affiliation(s)
- Wiktoria Konieczna
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (W.K.); (M.A.)
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4, 87-100 Toruń, Poland
| | - Agnieszka Mierek-Adamska
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (W.K.); (M.A.)
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4, 87-100 Toruń, Poland
| | - Natalia Chojnacka
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (W.K.); (M.A.)
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4, 87-100 Toruń, Poland
| | - Marcel Antoszewski
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (W.K.); (M.A.)
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4, 87-100 Toruń, Poland
| | - Aleksandra Szydłowska-Czerniak
- Department of Analytical Chemistry and Applied Spectroscopy, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland;
| | - Grażyna B. Dąbrowska
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (W.K.); (M.A.)
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144
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Sevilla F, Martí MC, De Brasi-Velasco S, Jiménez A. Redox regulation, thioredoxins, and glutaredoxins in retrograde signalling and gene transcription. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5955-5969. [PMID: 37453076 PMCID: PMC10575703 DOI: 10.1093/jxb/erad270] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Integration of reactive oxygen species (ROS)-mediated signal transduction pathways via redox sensors and the thiol-dependent signalling network is of increasing interest in cell biology for their implications in plant growth and productivity. Redox regulation is an important point of control in protein structure, interactions, cellular location, and function, with thioredoxins (TRXs) and glutaredoxins (GRXs) being key players in the maintenance of cellular redox homeostasis. The crosstalk between second messengers, ROS, thiol redox signalling, and redox homeostasis-related genes controls almost every aspect of plant development and stress response. We review the emerging roles of TRXs and GRXs in redox-regulated processes interacting with other cell signalling systems such as organellar retrograde communication and gene expression, especially in plants during their development and under stressful environments. This approach will cast light on the specific role of these proteins as redox signalling components, and their importance in different developmental processes during abiotic stress.
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Affiliation(s)
- Francisca Sevilla
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
| | - Maria Carmen Martí
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
| | - Sabrina De Brasi-Velasco
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
| | - Ana Jiménez
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
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Degon Z, Dixon S, Rahmatallah Y, Galloway M, Gulutzo S, Price H, Cook J, Glazko G, Mukherjee A. Azospirillum brasilense improves rice growth under salt stress by regulating the expression of key genes involved in salt stress response, abscisic acid signaling, and nutrient transport, among others. FRONTIERS IN AGRONOMY 2023; 5:1216503. [PMID: 38223701 PMCID: PMC10785826 DOI: 10.3389/fagro.2023.1216503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Major food crops, such as rice and maize, display severe yield losses (30-50%) under salt stress. Furthermore, problems associated with soil salinity are anticipated to worsen due to climate change. Therefore, it is necessary to implement sustainable agricultural strategies, such as exploiting beneficial plant-microbe associations, for increased crop yields. Plants can develop associations with beneficial microbes, including arbuscular mycorrhiza and plant growth-promoting bacteria (PGPB). PGPB improve plant growth via multiple mechanisms, including protection against biotic and abiotic stresses. Azospirillum brasilense, one of the most studied PGPB, can mitigate salt stress in different crops. However, little is known about the molecular mechanisms by which A. brasilense mitigates salt stress. This study shows that total and root plant mass is improved in A. brasilense-inoculated rice plants compared to the uninoculated plants grown under high salt concentrations (100 mM and 200 mM NaCl). We observed this growth improvement at seven- and fourteen days post-treatment (dpt). Next, we used transcriptomic approaches and identified differentially expressed genes (DEGs) in rice roots when exposed to three treatments: 1) A. brasilense, 2) salt (200 mM NaCl), and 3) A. brasilense and salt (200 mM NaCl), at seven dpt. We identified 786 DEGs in the A. brasilense-treated plants, 4061 DEGs in the salt-stressed plants, and 1387 DEGs in the salt-stressed A. brasilense-treated plants. In the A. brasilense-treated plants, we identified DEGs involved in defense, hormone, and nutrient transport, among others. In the salt-stressed plants, we identified DEGs involved in abscisic acid and jasmonic acid signaling, antioxidant enzymes, sodium and potassium transport, and calcium signaling, among others. In the salt-stressed A. brasilense-treated plants, we identified some genes involved in salt stress response and tolerance (e.g., abscisic acid and jasmonic acid signaling, antioxidant enzymes, calcium signaling), and sodium and potassium transport differentially expressed, among others. We also identified some A. brasilense-specific plant DEGs, such as nitrate transporters and defense genes. Furthermore, our results suggest genes involved in auxin and ethylene signaling are likely to play an important role during these interactions. Overall, our transcriptomic data indicate that A. brasilense improves rice growth under salt stress by regulating the expression of key genes involved in defense and stress response, abscisic acid and jasmonic acid signaling, and ion and nutrient transport, among others. Our findings will provide essential insights into salt stress mitigation in rice by A. brasilense.
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Affiliation(s)
- Zachariah Degon
- Department of Biology, University of Central Arkansas, Conway, AR, United States
| | - Seth Dixon
- Department of Biology, University of Central Arkansas, Conway, AR, United States
| | - Yasir Rahmatallah
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Mary Galloway
- Department of Biology, University of Central Arkansas, Conway, AR, United States
| | - Sophia Gulutzo
- Department of Biology, University of Central Arkansas, Conway, AR, United States
| | - Hunter Price
- Department of Biology, University of Central Arkansas, Conway, AR, United States
| | - John Cook
- Department of Biology, University of Central Arkansas, Conway, AR, United States
| | - Galina Glazko
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Arijit Mukherjee
- Department of Biology, University of Central Arkansas, Conway, AR, United States
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146
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Wang HQ, Zhao XY, Xuan W, Wang P, Zhao FJ. Rice roots avoid asymmetric heavy metal and salinity stress via an RBOH-ROS-auxin signaling cascade. MOLECULAR PLANT 2023; 16:1678-1694. [PMID: 37735869 DOI: 10.1016/j.molp.2023.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 08/14/2023] [Accepted: 09/14/2023] [Indexed: 09/23/2023]
Abstract
Root developmental plasticity is crucial for plants to adapt to a changing soil environment, where nutrients and abiotic stress factors are distributed heterogeneously. How plant roots sense and avoid heterogeneous abiotic stress in soil remains unclear. Here, we show that, in response to asymmetric stress of heavy metals (cadmium, copper, or lead) and salt, rice roots rapidly proliferate lateral roots (LRs) in the stress-free area, thereby remodeling root architecture to avoid localized stress. Imaging and quantitative analyses of reactive oxygen species (ROS) showed that asymmetric stress induces a ROS burst in the tips of the exposed roots and simultaneously triggers rapid systemic ROS signaling to the unexposed roots. Addition of a ROS scavenger to either the stressed or stress-free area abolished systemic ROS signaling and LR proliferation induced by asymmetric stress. Asymmetric stress also enhanced cytosolic calcium (Ca2+) signaling; blocking Ca2+signaling inhibited systemic ROS propagation and LR branching in the stress-free area. We identified two plasma-membrane-localized respiratory burst oxidase homologs, OsRBOHA and OsRBOHI, as key players in systemic ROS signaling under asymmetric stress. Expression of OsRBOHA and OsRBOHI in roots was upregulated by Cd stress, and knockout of either gene reduced systemic ROS signaling and LR proliferation under asymmetric stress. Furthermore, we demonstrated that auxin signaling and cell wall remodeling act downstream of the systemic ROS signaling to promote LR development. Collectively, our study reveals an RBOH-ROS-auxin signaling cascade that enables rice roots to avoid localized stress of heavy metals and salt and provides new insight into root system plasticity in heterogenous soil.
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Affiliation(s)
- Han-Qing Wang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xing-Yu Zhao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Xuan
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Peng Wang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang-Jie Zhao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Kan Y, Mu XR, Gao J, Lin HX, Lin Y. The molecular basis of heat stress responses in plants. MOLECULAR PLANT 2023; 16:1612-1634. [PMID: 37740489 DOI: 10.1016/j.molp.2023.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/30/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023]
Abstract
Global warming impacts crop production and threatens food security. Elevated temperatures are sensed by different cell components. Temperature increases are classified as either mild warm temperatures or excessively hot temperatures, which are perceived by distinct signaling pathways in plants. Warm temperatures induce thermomorphogenesis, while high-temperature stress triggers heat acclimation and has destructive effects on plant growth and development. In this review, we systematically summarize the heat-responsive genetic networks in Arabidopsis and crop plants based on recent studies. In addition, we highlight the strategies used to improve grain yield under heat stress from a source-sink perspective. We also discuss the remaining issues regarding the characteristics of thermosensors and the urgency required to explore the basis of acclimation under multifactorial stress combination.
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Affiliation(s)
- Yi Kan
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiao-Rui Mu
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Jin Gao
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Hong-Xuan Lin
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
| | - Youshun Lin
- Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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148
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Favreau B, Gaal C, Pereira de Lima I, Droc G, Roques S, Sotillo A, Guérard F, Cantonny V, Gakière B, Leclercq J, Lafarge T, de Raissac M. A multi-level approach reveals key physiological and molecular traits in the response of two rice genotypes subjected to water deficit at the reproductive stage. PLANT-ENVIRONMENT INTERACTIONS (HOBOKEN, N.J.) 2023; 4:229-257. [PMID: 37822730 PMCID: PMC10564380 DOI: 10.1002/pei3.10121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 07/20/2023] [Accepted: 07/31/2023] [Indexed: 10/13/2023]
Abstract
Rice is more vulnerable to drought than maize, wheat, and sorghum because its water requirements remain high throughout the rice life cycle. The effects of drought vary depending on the timing, intensity, and duration of the events, as well as on the rice genotype and developmental stage. It can affect all levels of organization, from genes to the cells, tissues, and/or organs. In this study, a moderate water deficit was applied to two contrasting rice genotypes, IAC 25 and CIRAD 409, during their reproductive stage. Multi-level transcriptomic, metabolomic, physiological, and morphological analyses were performed to investigate the complex traits involved in their response to drought. Weighted gene network correlation analysis was used to identify the specific molecular mechanisms regulated by each genotype, and the correlations between gene networks and phenotypic traits. A holistic analysis of all the data provided a deeper understanding of the specific mechanisms regulated by each genotype, and enabled the identification of gene markers. Under non-limiting water conditions, CIRAD 409 had a denser shoot, but shoot growth was slower despite better photosynthetic performance. Under water deficit, CIRAD 409 was weakly affected regardless of the plant level analyzed. In contrast, IAC 25 had reduced growth and reproductive development. It regulated transcriptomic and metabolic activities at a high level, and activated a complex gene regulatory network involved in growth-limiting processes. By comparing two contrasting genotypes, the present study identified the regulation of some fundamental processes and gene markers, that drive rice development, and influence its response to water deficit, in particular, the importance of the biosynthetic and regulatory pathways for cell wall metabolism. These key processes determine the biological and mechanical properties of the cell wall and thus influence plant development, organ expansion, and turgor maintenance under water deficit. Our results also question the genericity of the antagonism between morphogenesis and organogenesis observed in the two genotypes.
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Affiliation(s)
- Bénédicte Favreau
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | - Camille Gaal
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | | | - Gaétan Droc
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | - Sandrine Roques
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | - Armel Sotillo
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | - Florence Guérard
- Plateforme Métabolisme‐MétabolomeInstitute of Plant Sciences Paris‐Saclay (IPS2), Université Paris‐Saclay, National Committee of Scientific Research (CNRS), National Institute for Research for Agriculture, Food and Environment (INRAE), Université d'Evry, Université de ParisGif‐sur‐YvetteFrance
| | - Valérie Cantonny
- Plateforme Métabolisme‐MétabolomeInstitute of Plant Sciences Paris‐Saclay (IPS2), Université Paris‐Saclay, National Committee of Scientific Research (CNRS), National Institute for Research for Agriculture, Food and Environment (INRAE), Université d'Evry, Université de ParisGif‐sur‐YvetteFrance
| | - Bertrand Gakière
- Plateforme Métabolisme‐MétabolomeInstitute of Plant Sciences Paris‐Saclay (IPS2), Université Paris‐Saclay, National Committee of Scientific Research (CNRS), National Institute for Research for Agriculture, Food and Environment (INRAE), Université d'Evry, Université de ParisGif‐sur‐YvetteFrance
| | - Julie Leclercq
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | - Tanguy Lafarge
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
| | - Marcel de Raissac
- CIRAD, UMR AGAP InstitutMontpellierFrance
- UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut AgroMontpellierFrance
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149
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Luo Q, Wang J, Wang P, Liang X, Li J, Wu C, Fang H, Ding S, Shao S, Shi K. Transcriptomic and genetic approaches reveal that low-light-induced disease susceptibility is related to cellular oxidative stress in tomato. HORTICULTURE RESEARCH 2023; 10:uhad173. [PMID: 37841503 PMCID: PMC10569241 DOI: 10.1093/hr/uhad173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 08/20/2023] [Indexed: 10/17/2023]
Abstract
The impact of low light intensities on plant disease outbreaks represents a major challenge for global crop security, as it frequently results in significant yield losses. However, the underlying mechanisms of the effect of low light on plant defense are still poorly understood. Here, using an RNA-seq approach, we found that the susceptibility of tomato to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) under low light was associated with the oxidation-reduction process. Low light conditions exacerbated Pst DC3000-induced reactive oxygen species (ROS) accumulation and protein oxidation. Analysis of gene expression and enzyme activity of ascorbate peroxidase 2 (APX2) and other antioxidant enzymes revealed that these defense responses were significantly induced by Pst DC3000 inoculation under normal light, whereas these genes and their associated enzyme activities were not responsive to pathogen inoculation under low light. Additionally, the reduced ascorbate to dehydroascorbate (AsA/DHA) ratio was lower under low light compared with normal light conditions upon Pst DC3000 inoculation. Furthermore, the apx2 mutants generated by a CRISPR-Cas9 gene-editing approach were more susceptible to Pst DC3000 under low light conditions. Notably, this increased susceptibility could be significantly reduced by exogenous AsA treatment. Collectively, our findings suggest that low-light-induced disease susceptibility is associated with increased cellular oxidative stress in tomato plants. This study sheds light on the intricate relationship between light conditions, oxidative stress, and plant defense responses, and may pave the way for improved crop protection strategies in low light environments.
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Affiliation(s)
- Qian Luo
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jiao Wang
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Ping Wang
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Xiao Liang
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jianxin Li
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Changqi Wu
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hanmo Fang
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Shuting Ding
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Shujun Shao
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Kai Shi
- Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
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150
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Li G, Xu J, Xu K. Physiological Functions of Carbon Dots and Their Applications in Agriculture: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2684. [PMID: 37836325 PMCID: PMC10574142 DOI: 10.3390/nano13192684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
Carbon dots are carbon-based nanoparticles, which have the characteristics of a simple preparation process, photoluminescence, biocompatibility, an adjustable surface function, water solubility, and low-level toxicity. They are widely used in biological applications, such as imaging, biosensing, photocatalysis, and molecular transfer. They have also aroused great interest among researchers in agriculture, and there has been significant progress in improving crop growth and production. This review presents the physiological functions of carbon dots for crop growth and development, photosynthesis, water and nutrient absorption, and abiotic stress resistance and their applications in improving the ecological environment and agriculture as biosensors, and future application prospects and research directions of carbon dots in agriculture.
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Affiliation(s)
- Guohui Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (G.L.); (J.X.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Research Institute of Rice Industrial Engineering Technology, Agricultural College of Yangzhou University, Yangzhou 225009, China
| | - Jiwei Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (G.L.); (J.X.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Research Institute of Rice Industrial Engineering Technology, Agricultural College of Yangzhou University, Yangzhou 225009, China
| | - Ke Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China; (G.L.); (J.X.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Research Institute of Rice Industrial Engineering Technology, Agricultural College of Yangzhou University, Yangzhou 225009, China
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