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Tong M, Zhai K, Duan Y, Xia W, Zhao B, Zhang L, Chu J, Yao X. Selenium alleviates the adverse effects of microplastics on kale by regulating photosynthesis, redox homeostasis, secondary metabolism and hormones. Food Chem 2024; 450:139349. [PMID: 38631205 DOI: 10.1016/j.foodchem.2024.139349] [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: 01/23/2024] [Revised: 03/25/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
Kale is a functional food with anti-cancer, antioxidant, and anemia prevention properties. The harmful effects of the emerging pollutant microplastic (MP) on plants have been widely studied, but there is limited research how to mitigate MP damage on plants. Numerous studies have shown that Se is involved in regulating plant resistance to abiotic stresses. The paper investigated impact of MP and Se on kale growth, photosynthesis, reactive oxygen species (ROS) metabolism, phytochemicals, and endogenous hormones. Results revealed that MP triggered a ROS burst, which led to breakdown of antioxidant system in kale, and had significant toxic effects on photosynthetic system, biomass, and accumulation of secondary metabolites, as well as a significant decrease in IAA and a significant increase in GA. Under MP supply, Se mitigated the adverse effects of MP on kale by increasing photosynthetic pigment content, stimulating function of antioxidant system, enhancing secondary metabolite synthesis, and modulating hormonal networks.
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Affiliation(s)
- Mengting Tong
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Kuizhi Zhai
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Yusui Duan
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Wansheng Xia
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Bingnan Zhao
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Lulu Zhang
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Jianzhou Chu
- School of Life Sciences, Hebei University, Baoding 071002, China.
| | - Xiaoqin Yao
- School of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Sciences and Green Development, Hebei University, Baoding 071002, China; Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Baoding 071002, China.
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2
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Wang F, Liu P, Li J, Xu S, Chen H, Xie L. Effects of four antibiotics on the photosynthetic light reactions in the green alga Chlorella pyrenoidosa. Comp Biochem Physiol C Toxicol Pharmacol 2024; 281:109927. [PMID: 38643813 DOI: 10.1016/j.cbpc.2024.109927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/10/2024] [Accepted: 04/16/2024] [Indexed: 04/23/2024]
Abstract
Antibiotics are ubiquitously present in aquatic environments, posing a serious ecological risk to aquatic ecosystems. However, the effects of antibiotics on the photosynthetic light reactions of freshwater algae and the underlying mechanisms are relatively less understood. In this study, the effects of 4 representative antibiotics (clarithromycin, enrofloxacin, tetracycline, and sulfamethazine) on a freshwater alga (Chlorella pyrenoidosa) and the associated mechanisms, primarily focusing on key regulators of the photosynthetic light reactions, were evaluated. Algae were exposed to different concentrations of clarithromycin (0.0-0.3 mg/L), enrofloxacin (0.0-30.0 mg/L), tetracycline (0.0-10.0 mg/L), and sulfamethazine (0.0-50.0 mg/L) for 7 days. The results showed that the 4 antibiotics inhibited the growth, the photosynthetic pigment contents, and the activity of antioxidant enzymes. In addition, exposure to clarithromycin caused a 118.4 % increase in malondialdehyde (MDA) levels at 0.3 mg/L. Furthermore, the transcripts of genes for the adenosine triphosphate (ATP) - dependent chloroplast proteases (ftsH and clpP), genes in photosystem II (psbA, psbB, and psbC), genes related to ATP synthase (atpA, atpB, and atpH), and petA (related to cytochrome b6/f complex) were altered by clarithromycin. This study contributes to a better understanding of the risk of antibiotics on primary producers in aquatic environment.
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Affiliation(s)
- Feifan Wang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Ping Liu
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Jiajun Li
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Siting Xu
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Hongxing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
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3
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Yang X, Feng K, Wang G, Zhang S, Zhao J, Yuan X, Ren J. Titanium dioxide nanoparticles alleviates polystyrene nanoplastics induced growth inhibition by modulating carbon and nitrogen metabolism via melatonin signaling in maize. J Nanobiotechnology 2024; 22:262. [PMID: 38760823 PMCID: PMC11100085 DOI: 10.1186/s12951-024-02537-x] [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: 02/22/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Nanoplastics, are emerging pollutants, present a potential hazard to food security and human health. Titanium dioxide nanoparticles (Nano-TiO2), serving as nano-fertilizer in agriculture, may be important in alleviating polystyrene nanoplastics (PSNPs) toxicity. RESULTS Here, we performed transcriptomic, metabolomic and physiological analyzes to identify the role of Nano-TiO2 in regulating the metabolic processes in PSNPs-stressed maize seedlings (Zea mays L.). The growth inhibition by PSNPs stress was partially relieved by Nano-TiO2. Furthermore, when considering the outcomes obtained from RNA-seq, enzyme activity, and metabolite content analyses, it becomes evident that Nano-TiO2 significantly enhance carbon and nitrogen metabolism levels in plants. In comparison to plants that were not subjected to Nano-TiO2, plants exposed to Nano-TiO2 exhibited enhanced capabilities in maintaining higher rates of photosynthesis, sucrose synthesis, nitrogen assimilation, and protein synthesis under stressful conditions. Meanwhile, Nano-TiO2 alleviated the oxidative damage by modulating the antioxidant systems. Interestingly, we also found that Nano-TiO2 significantly enhanced the endogenous melatonin levels in maize seedlings. P-chlorophenylalanine (p-CPA, a melatonin synthesis inhibitor) declined Nano-TiO2-induced PSNPs tolerance. CONCLUSIONS Taken together, our data show that melatonin is involved in Nano-TiO2-induced growth promotion in maize through the regulation of carbon and nitrogen metabolism.
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Affiliation(s)
- Xiaoxiao Yang
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030800, Shanxi, China
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Ke Feng
- College of Agriculture, Shanxi Agricultural University, Taigu, 030800, Shanxi, China
| | - Guo Wang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030800, Shanxi, China
| | - Shifang Zhang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030800, Shanxi, China
| | - Juan Zhao
- College of Agriculture, Shanxi Agricultural University, Taigu, 030800, Shanxi, China.
| | - Xiangyang Yuan
- College of Agriculture, Shanxi Agricultural University, Taigu, 030800, Shanxi, China.
| | - Jianhong Ren
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030800, Shanxi, China.
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Liu S, An Z, Lai Z. Amaranth's Growth and Physiological Responses to Salt Stress and the Functional Analysis of AtrTCP1 Gene. Int J Mol Sci 2024; 25:5437. [PMID: 38791475 PMCID: PMC11121779 DOI: 10.3390/ijms25105437] [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: 05/03/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Amaranth species are C4 plants that are rich in betalains, and they are tolerant to salinity stress. A small family of plant-specific TCP transcription factors are involved in the response to salt stress. However, it has not been investigated whether amaranth TCP1 is involved in salt stress. We elucidated that the growth and physiology of amaranth were affected by salt concentrations of 50-200 mmol·L-1 NaCl. The data showed that shoot and root growth was inhibited at 200 mmol·L-1, while it was promoted at 50 mmol·L-1. Meanwhile, the plants also showed physiological responses, which indicated salt-induced injuries and adaptation to the salt stress. Moreover, AtrTCP1 promoted Arabidopsis seed germination. The germination rate of wild-type (WT) and 35S::AtrTCP1-GUS Arabidopsis seeds reached around 92% by the seventh day and 94.5% by the second day under normal conditions, respectively. With 150 mmol·L-1 NaCl treatment, the germination rate of the WT and 35S::AtrTCP1-GUS plant seeds was 27.0% by the seventh day and 93.0% by the fourth day, respectively. Under salt stress, the transformed 35S::AtrTCP1 plants bloomed when they grew 21.8 leaves after 16.2 days of treatment, which was earlier than the WT plants. The transformed Arabidopsis plants flowered early to resist salt stress. These results reveal amaranth's growth and physiological responses to salt stress, and provide valuable information on the AtrTCP1 gene.
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Affiliation(s)
- Shengcai Liu
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zixian An
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
| | - Zhongxiong Lai
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
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Zhang F, Rosental L, Ji B, Brotman Y, Dai M. Metabolite-mediated adaptation of crops to drought and the acquisition of tolerance. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:626-644. [PMID: 38241088 DOI: 10.1111/tpj.16634] [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: 11/09/2023] [Revised: 12/22/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024]
Abstract
Drought is one of the major and growing threats to agriculture productivity and food security. Metabolites are involved in the regulation of plant responses to various environmental stresses, including drought stress. The complex drought tolerance can be ascribed to several simple metabolic traits. These traits could then be used for detecting the genetic architecture of drought tolerance. Plant metabolomes show dynamic differences when drought occurs during different developmental stages or upon different levels of drought stress. Here, we reviewed the major and most recent findings regarding the metabolite-mediated plant drought response. Recent progress in the development of drought-tolerant agents is also discussed. We provide an updated schematic overview of metabolome-driven solutions for increasing crop drought tolerance and thereby addressing an impending agricultural challenge.
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Affiliation(s)
- Fei Zhang
- National Key Laboratory of Crop Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Leah Rosental
- Department of Life Sciences, Ben-Gurion University of the Negev, Beersheba, 8410501, Israel
| | - Boming Ji
- National Key Laboratory of Crop Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Yariv Brotman
- Department of Life Sciences, Ben-Gurion University of the Negev, Beersheba, 8410501, Israel
| | - Mingqiu Dai
- National Key Laboratory of Crop Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
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6
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Patel J, Khatri K, Khandwal D, Gupta NK, Choudhary B, Hapani D, Koshiya J, Syed SN, Phillips DW, Jones HD, Mishra A. Modulation of physio-biochemical and photosynthesis parameters by overexpressing SbPIP2 gene improved abiotic stress tolerance of transgenic tobacco. PHYSIOLOGIA PLANTARUM 2024; 176:e14384. [PMID: 38859697 DOI: 10.1111/ppl.14384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 05/13/2024] [Accepted: 05/21/2024] [Indexed: 06/12/2024]
Abstract
The present study aims to explore the potential of a plasma-membrane localized PIP2-type aquaporin protein sourced from the halophyte Salicornia brachiata to alleviate salinity and water deficit stress tolerance in a model plant through transgenic intervention. Transgenic plants overexpressing SbPIP2 gene showed improved physio-biochemical parameters like increased osmolytes (proline, total sugar, and amino acids), antioxidants (polyphenols), pigments and membrane stability under salinity and drought stresses compared to control plants [wild type (WT) and vector control (VC) plants]. Multivariate statistical analysis showed that, under water and salinity stresses, osmolytes, antioxidants and pigments were correlated with SbPIP2-overexpressing (SbPIP2-OE) plants treated with salinity and water deficit stress, suggesting their involvement in stress tolerance. As aquaporins are also involved in CO2 transport, SbPIP2-OE plants showed enhanced photosynthesis performance than wild type upon salinity and drought stresses. Photosynthetic gas exchange (net CO2 assimilation rate, PSII efficiency, ETR, and non-photochemical quenching) were significantly higher in SbPIP2-OE plants compared to control plants (wild type and vector control plants) under both unstressed and stressed conditions. The higher quantum yield for reduction of end electron acceptors at the PSI acceptor side [Φ( R0 )] in SbPIP2-OE plants compared to control plants under abiotic stresses indicates a continued PSI functioning, leading to retained electron transport rate, higher carbon assimilation, and less ROS-mediated injuries. In conclusion, the SbPIP2 gene functionally validated in the present study could be a potential candidate for engineering abiotic stress resilience in important crops.
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Affiliation(s)
- Jaykumar Patel
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Kusum Khatri
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
| | - Deepesh Khandwal
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Nirmala Kumari Gupta
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Babita Choudhary
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Divya Hapani
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
| | - Jignasha Koshiya
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
| | - Saif Najam Syed
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Dylan Wyn Phillips
- Department of Life Sciences, Aberystwyth University, Aberystwyth, Ceredigion, United Kingdom
| | - Huw Dylan Jones
- Department of Life Sciences, Aberystwyth University, Aberystwyth, Ceredigion, United Kingdom
| | - Avinash Mishra
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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7
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Riaz A, Thomas J, Ali HH, Zaheer MS, Ahmad N, Pereira A. High night temperature stress on rice ( Oryza sativa) - insights from phenomics to physiology. A review. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP24057. [PMID: 38815128 DOI: 10.1071/fp24057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 05/12/2024] [Indexed: 06/01/2024]
Abstract
Rice (Oryza sativa ) faces challenges to yield and quality due to urbanisation, deforestation and climate change, which has exacerbated high night temperature (HNT). This review explores the impacts of HNT on the physiological, molecular and agronomic aspects of rice growth. Rise in minimum temperature threatens a potential 41% reduction in rice yield by 2100. HNT disrupts rice growth stages, causing reduced seed germination, biomass, spikelet sterility and poor grain development. Recent findings indicate a 4.4% yield decline for every 1°C increase beyond 27°C, with japonica ecotypes exhibiting higher sensitivity than indica. We examine the relationships between elevated CO2 , nitrogen regimes and HNT, showing that the complexity of balancing positive CO2 effects on biomass with HNT challenges. Nitrogen enrichment proves crucial during the vegetative stage but causes disruption to reproductive stages, affecting grain yield and starch synthesis. Additionally, we elucidate the impact of HNT on plant respiration, emphasising mitochondrial respiration, photorespiration and antioxidant responses. Genomic techniques, including CRISPR-Cas9, offer potential for manipulating genes for HNT tolerance. Plant hormones and carbohydrate enzymatic activities are explored, revealing their intricate roles in spikelet fertility, grain size and starch metabolism under HNT. Gaps in understanding genetic factors influencing heat tolerance and potential trade-offs associated with hormone applications remain. The importance of interdisciplinary collaboration is needed to provide a holistic approach. Research priorities include the study of regulatory mechanisms, post-anthesis effects, cumulative HNT exposure and the interaction between climate variability and HNT impact to provide a research direction to enhance rice resilience in a changing climate.
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Affiliation(s)
- Awais Riaz
- Department of Crop, Soil, and Environmental Sciences, Faculty of Agriculture Food and Life Sciences, University of Arkansas System Division of Agriculture, Fayetteville, AR 72701, USA
| | - Julie Thomas
- Department of Crop, Soil, and Environmental Sciences, Faculty of Agriculture Food and Life Sciences, University of Arkansas System Division of Agriculture, Fayetteville, AR 72701, USA
| | - Hafiz Haider Ali
- Department of Crop, Soil, and Environmental Sciences, Faculty of Agriculture Food and Life Sciences, University of Arkansas System Division of Agriculture, Fayetteville, AR 72701, USA; and Department of Agriculture, Government College University Lahore, Lahore 54000, Pakistan; and Department of Plant Sciences, Aberdeen Research & Extension Center, University of Idaho, Aberdeen, ID, USA
| | - Muhammad Saqlain Zaheer
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Naushad Ahmad
- Department of Chemistry, College of Science, King Saud University, Riyadh11451, Saudi Arabia
| | - Andy Pereira
- Department of Crop, Soil, and Environmental Sciences, Faculty of Agriculture Food and Life Sciences, University of Arkansas System Division of Agriculture, Fayetteville, AR 72701, USA
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Liu L, Chen Z, Zhang N, Liu J, Tian Z, Sun C. Transcriptomic and metabolomic analysis provides insight into imazethapyr toxicity to non-target plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:28368-28378. [PMID: 38532215 DOI: 10.1007/s11356-024-32967-x] [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: 11/13/2023] [Accepted: 03/14/2024] [Indexed: 03/28/2024]
Abstract
Imazethapyr is a widely used imidazolinone herbicide worldwide, and its potential adverse effects on non-target plants have raised concerns. Understanding the mechanisms of imazethapyr phytotoxicity is crucial for its agro-ecological risk assessment. Here, the comprehensive molecular responses and metabolic alterations of Arabidopsis in response to imazethapyr were investigated. Our results showed that root exposure to imazethapyr inhibited shoot growth, reduced chlorophyll contents, induced photoinhibition and decreased photosynthetic activity. By non-target metabolomic analysis, we identified 75 metabolites that were significantly changed after imazethapyr exposure, and they are mainly enriched in carbohydrate, lipid and amino acid metabolism. Transcriptomic analysis confirmed that imazethapyr significantly downregulated the genes involved in photosynthetic electron transport and the carbon cycle. In detail, 48 genes in the photosynthetic lightreaction and 11 genes in Calvin cycle were downregulated. Additionally, the downregulation of genes related to electron transport in mitochondria provides strong evidence for imazethapyr inhibiting photosynthetic carbon fixation and cellular energy metabolism as one of mechanisms of toxicity. These results revealed the molecular and metabolic basis of imazethapyr toxicity on non-target plants, contributing to environmental risk assessment and mitigate negative impact of imazethapyr residues in agricultural soils.
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Affiliation(s)
- Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Ziyu Chen
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Nan Zhang
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jiahui Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Zhongling Tian
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Chengliang Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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9
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Danish S, Hareem M, Dawar K, Naz T, Iqbal MM, Ansari MJ, Salmen SH, Datta R. The role of strigolactone in alleviating salinity stress in chili pepper. BMC PLANT BIOLOGY 2024; 24:209. [PMID: 38519997 PMCID: PMC10960418 DOI: 10.1186/s12870-024-04900-4] [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: 11/05/2023] [Accepted: 03/11/2024] [Indexed: 03/25/2024]
Abstract
Salinity stress can significantly delay plant growth. It can disrupt water and nutrient uptake, reducing crop yields and poor plant health. The use of strigolactone can be an effective technique to overcome this issue. Strigolactone enhances plant growth by promoting root development and improvement in physiological attributes. The current pot study used strigolactone to amend chili under no salinity and salinity stress environments. There were four treatments, i.e., 0, 10µM strigolactone, 20µM strigolactone and 30µM strigolactone. All treatments were applied in four replications following a completely randomized design (CRD). Results showed that 20µM strigolactone caused a significant increase in chili plant height (21.07%), dry weight (33.60%), fruit length (19.24%), fruit girth (35.37%), and fruit yield (60.74%) compared to control under salinity stress. Significant enhancement in chili chlorophyll a (18.65%), chlorophyll b (43.52%), and total chlorophyll (25.09%) under salinity stress validated the effectiveness of 20µM strigolactone application as treatment over control. Furthermore, improvement in nitrogen, phosphorus, and potassium concentration in leaves confirmed the efficient functioning of 20µM strigolactone compared to other concentrations under salinity stress. The study concluded that 20µM strigolactone is recommended for mitigating salinity stress in chili plants. Growers are advised to apply 20µM strigolactone to enhance their chili production under salinity stress.
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Affiliation(s)
- Subhan Danish
- Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Misbah Hareem
- Department of Environmental Sciences, Woman University Multan, Multan, Punjab, Pakistan.
| | - Khadim Dawar
- Department of Soil and Environmental Science, the University of Agriculture Peshawar, Peshawar, Pakistan
| | - Tayyaba Naz
- Saline Agriculture Research Centre, Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38400, Pakistan
| | - Muhammad Mazhar Iqbal
- Department of Soil and Environmental Sciences, College of Agriculture, University of Sargodha, Sargodha, 40100, Pakistan
| | - Mohammad Javed Ansari
- Department of Botany, Hindu College Moradabad (MJP Rohilkhand University Bareilly), Moradabad, 244001, India
| | - Saleh H Salmen
- Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Rahul Datta
- Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1, Brno, 61300, Czech Republic.
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10
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Yuan Y, Tan M, Zhou M, Hassan MJ, Lin L, Lin J, Zhang Y, Li Z. Drought priming-induced stress memory improves subsequent drought or heat tolerance via activation of γ-aminobutyric acid-regulated pathways in creeping bentgrass. PLANT BIOLOGY (STUTTGART, GERMANY) 2024. [PMID: 38509772 DOI: 10.1111/plb.13636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 02/14/2024] [Indexed: 03/22/2024]
Abstract
Recurrent drought can induce stress memory in plants to induce tolerance to subsequent stress, such as high temperature or drought. Drought priming (DP) is an effective approach to improve tolerance to various stresses; however, the potential mechanism of DP-induced stress memory has not been fully resoved. We examined DP-regulated subsequent drought tolerance or thermotolerance associated with changes in physiological responses, GABA and NO metabolism, heat shock factor (HSF) and dehydrin (DHN) pathways in perennial creeping bentgrass. Plants can recover after two cycle of DP, and DP-treated plants had significantly higher tolerance to subsequent drought or heat stress, with higher leaf RWC, Chl content, photochemical efficiency, and cell membrane stability. DP significantly alleviated oxidative damage through enhancing total antioxidant capacity in response to subsequent drought or heat stress. Endogenous GABA was significantly increased by DP through activating glutamic acid decarboxylase activity and inhibiting GABA transaminase activity. DP also enhanced accumulation of NO, depending on NOS activity, under subsequent drought or heat stress. Transcript levels of multiple transcription factors, heat shock proteins, and DHNs in the HSF and DHN pathways were up-regulated by DP under drought or heat stress, but there were differences between DP-regulated heat tolerance and drought tolerance in these pathways. The findings indicate that under recurrent moderate drought, DP improves subsequent tolerance to drought or heat stress in relation to GABA-regulated pathways, providing new insight into understanding of the role of stress memory in plant adaptation to complex environmental stresses.
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Affiliation(s)
- Y Yuan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M Tan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M Zhou
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M J Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - L Lin
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - J Lin
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Y Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Z Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
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Mishra A, Gupta R, Joshi RK, Garkoti SC. Topography-mediated light environment regulates intra-specific seasonal and diurnal patterns of photosynthetic plasticity and plant ecophysiological adaptation strategies. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2024; 30:435-452. [PMID: 38633276 PMCID: PMC11018732 DOI: 10.1007/s12298-024-01439-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/20/2023] [Accepted: 03/16/2024] [Indexed: 04/19/2024]
Abstract
Due to substantial topographic variations in the Himalaya, incident solar radiation in the forest canopy is highly unequal. This results in significant environmental differences at finer scales and may lead to considerable differences in photosynthetic productivity in montane forests. Therefore, local-scale ecophysiological investigations, may be more effective and instructive than landscape-level inventories and models. We investigated leaf ecophysiological differences and related adaptations between two Quercus semecarpifolia forests in aspect-mediated, significantly varying light regimes in the same mountain catchment. Seasonal and diurnal rates of photosynthesis (A) were significantly higher in south aspect (S) than the north (N). Although temperature was a key contributor to seasonal fluctuations in photosynthetic physiology, photoperiod significantly determined intraspecific variations in seasonal and diurnal plasticity of leaf ecophysiological traits between the two topography-mediated light environments. The regression model for A as a function of stomatal conductivity (gsw) explained the critical role of gsw in triggering photosynthetic plasticity as an adaptive function against varying environmental stresses due to seasonal solar differences. We also examined, modifications in chlorophyll content between the two light regimes across seasons to determine the chlorophyll adaptation strategy. The N aspect had higher leaf chl a, b, and chl a + b and a lower chl-allocation ratio (a/b) than S, which helped to optimize the required light reception in the photoreaction centers for improved photosynthetic performance. The leaf light response curves for A and gsw were observed against varying incident photosynthetic photon flux densities (0-2000 mol.m2 s-1 PPFD) for both aspects. We found that the same species developed significantly distinct light response strategies and photosynthetic capacities in S than in N for the given magnitudes of PPFD. Such acquired ecophysiological adaptations owing to varying light environments may provide significant clues for understanding the impact of future climate change on Himalayan tree species.
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Affiliation(s)
- Ambuj Mishra
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rajman Gupta
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rajendra Kr. Joshi
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
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Paethaisong W, Lakhunthod P, Santanoo S, Chandarak N, Onwan S, Kaewjampa N, Dongsansuk A. Open field hardening improves leaf physiological drought tolerance in young plants of Sindora siamensis. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23102. [PMID: 38479796 DOI: 10.1071/fp23102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 02/21/2024] [Indexed: 04/04/2024]
Abstract
The effect of drought stress on leaf physiology was studied in 10-month-old plants of Sindora siamensis . Plants were either placed in an open greenhouse (unhardening; UH) or in an open field (open field hardening; H) for 45days. Both the UH and H plants stopped receiving water (D) until the initial drought injury and then rewatered (R) until complete recovery. Results showed necrosis in the leaves of UH+D, while H+D showed wilting at Day 7 after drought. A greater degree of necrosis was found in UH+D+R but made complete recovery in H+D+R at Day 4 after rewatering. Drought stress resulted in decreased leaf area in H, and reduced leaf and stem water status, PSII efficiency, net photosynthetic rate, stomatal conductance and transpiration rate in both UH and H. It also resulted in an increase in water use efficiency in both UH and H. Electrolyte leakage and malondialdehyde contents in UH were markedly increased due to drought stress. These results suggest that unhardened young plants of Sindora exposed to drought exhibited enhanced stomata behaviour by minimising open stomata and transpiration, resulting in high efficiency of water usage. However, there was still membrane damage from lipid peroxidation, which caused necrosis. Open field hardened plants exposed to drought demonstrated reduced open stomata and transpiration, thereby preserving leaf and soil water status and enhancing water use efficiency. This may be a reduction in lipid peroxidation though an oxidative scavenging mechanism that causes a slight alteration in membrane stability and a slight necrosis.
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Affiliation(s)
- Warunya Paethaisong
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Preeyanuch Lakhunthod
- Department of Biological Sciences, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Supranee Santanoo
- Salt-tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Natthamon Chandarak
- Salt-tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; and Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sujittra Onwan
- Department of Forest Resource Management Office No. 7, Khon Kaen 40000, Thailand
| | - Naruemol Kaewjampa
- Department of Conservation, Faculty of Forestry, Kasetsart University, Bangkok 10900, Thailand
| | - Anoma Dongsansuk
- Salt-tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; and Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
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Wang Y, Jia X, An S, Yin W, Huang J, Jiang X. Nanozyme-Based Regulation of Cellular Metabolism and Their Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2301810. [PMID: 37017586 DOI: 10.1002/adma.202301810] [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: 02/25/2023] [Revised: 03/29/2023] [Indexed: 06/19/2023]
Abstract
Metabolism is the sum of the enzyme-dependent chemical reactions, which produces energy in catabolic process and synthesizes biomass in anabolic process, exhibiting high similarity in mammalian cell, microbial cell, and plant cell. Consequently, the loss or gain of metabolic enzyme activity greatly affects cellular metabolism. Nanozymes, as emerging enzyme mimics with diverse functions and adjustable catalytic activities, have shown attractive potential for metabolic regulation. Although the basic metabolic tasks are highly similar for the cells from different species, the concrete metabolic pathway varies with the intracellular structure of different species. Here, the basic metabolism in living organisms is described and the similarities and differences in the metabolic pathways among mammalian, microbial, and plant cells and the regulation mechanism are discussed. The recent progress on regulation of cellular metabolism mainly including nutrient uptake and utilization, energy production, and the accompanied redox reactions by different kinds of oxidoreductases and their applications in the field of disease therapy, antimicrobial therapy, and sustainable agriculture is systematically reviewed. Furthermore, the prospects and challenges of nanozymes in regulating cell metabolism are also discussed, which broaden their application scenarios.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xiaodan Jia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Shangjie An
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China (USTC), Hefei, Anhui, 230026, China
| | - Wenbo Yin
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China (USTC), Hefei, Anhui, 230026, China
| | - Jiahao Huang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China (USTC), Hefei, Anhui, 230026, China
| | - Xiue Jiang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China (USTC), Hefei, Anhui, 230026, China
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
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Ahmed M, Tóth Z, Decsi K. The Impact of Salinity on Crop Yields and the Confrontational Behavior of Transcriptional Regulators, Nanoparticles, and Antioxidant Defensive Mechanisms under Stressful Conditions: A Review. Int J Mol Sci 2024; 25:2654. [PMID: 38473901 DOI: 10.3390/ijms25052654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/20/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
One of the most significant environmental challenges to crop growth and yield worldwide is soil salinization. Salinity lowers soil solution water potential, causes ionic disequilibrium and specific ion effects, and increases reactive oxygen species (ROS) buildup, causing several physiological and biochemical issues in plants. Plants have developed biological and molecular methods to combat salt stress. Salt-signaling mechanisms regulated by phytohormones may provide additional defense in salty conditions. That discovery helped identify the molecular pathways that underlie zinc-oxide nanoparticle (ZnO-NP)-based salt tolerance in certain plants. It emphasized the need to study processes like transcriptional regulation that govern plants' many physiological responses to such harsh conditions. ZnO-NPs have shown the capability to reduce salinity stress by working with transcription factors (TFs) like AP2/EREBP, WRKYs, NACs, and bZIPs that are released or triggered to stimulate plant cell osmotic pressure-regulating hormones and chemicals. In addition, ZnO-NPs have been shown to reduce the expression of stress markers such as malondialdehyde (MDA) and hydrogen peroxide (H2O2) while also affecting transcriptional factors. Those systems helped maintain protein integrity, selective permeability, photosynthesis, and other physiological processes in salt-stressed plants. This review examined how salt stress affects crop yield and suggested that ZnO-NPs could reduce plant salinity stress instead of osmolytes and plant hormones.
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Affiliation(s)
- Mostafa Ahmed
- Festetics Doctoral School, Institute of Agronomy, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary
- Department of Agricultural Biochemistry, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Zoltán Tóth
- Institute of Agronomy, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary
| | - Kincső Decsi
- Institute of Agronomy, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary
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15
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Ozawa SI, Zhang G, Sakamoto W. Dysfunction of Chloroplast Protease Activity Mitigates pgr5 Phenotype in the Green Algae Chlamydomonas reinhardtii. PLANTS (BASEL, SWITZERLAND) 2024; 13:606. [PMID: 38475453 DOI: 10.3390/plants13050606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/16/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024]
Abstract
Researchers have described protection mechanisms against the photoinhibition of photosystems under strong-light stress. Cyclic Electron Flow (CEF) mitigates electron acceptor-side limitation, and thus contributes to Photosystem I (PSI) protection. Chloroplast protease removes damaged protein to assist with protein turn over, which contributes to the quality control of Photosystem II (PSII). The PGR5 protein is involved in PGR5-dependent CEF. The FTSH protein is a chloroplast protease which effectively degrades the damaged PSII reaction center subunit, D1 protein. To investigate how the PSI photoinhibition phenotype in pgr5 would be affected by adding the ftsh mutation, we generated double-mutant pgr5ftsh via crossing, and its phenotype was characterized in the green algae Chlamydomonas reinhardtii. The cells underwent high-light incubation as well as low-light incubation after high-light incubation. The time course of Fv/Fm values in pgr5ftsh showed the same phenotype with ftsh1-1. The amplitude of light-induced P700 photo-oxidation absorbance change was measured. The amplitude was maintained at a low value in the control and pgr5ftsh during high-light incubation, but was continuously decreased in pgr5. During the low-light incubation after high-light incubation, amplitude was more rapidly recovered in pgr5ftsh than pgr5. We concluded that the PSI photoinhibition by the pgr5 mutation is mitigated by an additional ftsh1-1 mutation, in which plastoquinone pool would be less reduced due to damaged PSII accumulation.
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Affiliation(s)
- Shin-Ichiro Ozawa
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
| | - Guoxian Zhang
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
| | - Wataru Sakamoto
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
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16
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Bouard W, Ouellet F, Houde M. Modulation of the wheat transcriptome by TaZFP13D under well-watered and drought conditions. PLANT MOLECULAR BIOLOGY 2024; 114:16. [PMID: 38332456 PMCID: PMC10853348 DOI: 10.1007/s11103-023-01403-y] [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: 07/25/2023] [Accepted: 11/16/2023] [Indexed: 02/10/2024]
Abstract
Maintaining global food security in the context of climate changes will be an important challenge in the next century. Improving abiotic stress tolerance of major crops such as wheat can contribute to this goal. This can be achieved by the identification of the genes involved and their use to develop tools for breeding programs aiming to generate better adapted cultivars. Recently, we identified the wheat TaZFP13D gene encoding Zinc Finger Protein 13D as a new gene improving water-stress tolerance. The current work analyzes the TaZFP13D-dependent transcriptome modifications that occur in well-watered and dehydration conditions to better understand its function during normal growth and during drought. Plants that overexpress TaZFP13D have a higher biomass under well-watered conditions, indicating a positive effect of the protein on growth. Survival rate and stress recovery after a severe drought stress are improved compared to wild-type plants. The latter is likely due the higher activity of key antioxidant enzymes and concomitant reduction of drought-induced oxidative damage. Conversely, down-regulation of TaZFP13D decreases drought tolerance and protection against drought-induced oxidative damage. RNA-Seq transcriptome analysis identified many genes regulated by TaZFP13D that are known to improve drought tolerance. The analysis also revealed several genes involved in the photosynthetic electron transfer chain known to improve photosynthetic efficiency and chloroplast protection against drought-induced ROS damage. This study highlights the important role of TaZFP13D in wheat drought tolerance, contributes to unravel the complex regulation governed by TaZFPs, and suggests that it could be a promising marker to select wheat cultivars with higher drought tolerance.
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Affiliation(s)
- William Bouard
- Département des Sciences biologiques, Université du Québec à Montréal, Montréal, QC, H3C 3P8, Canada
| | - François Ouellet
- Département des Sciences biologiques, Université du Québec à Montréal, Montréal, QC, H3C 3P8, Canada
| | - Mario Houde
- Département des Sciences biologiques, Université du Québec à Montréal, Montréal, QC, H3C 3P8, Canada.
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17
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Li W, Liu J, Li Z, Ye R, Chen W, Huang Y, Yuan Y, Zhang Y, Hu H, Zheng P, Fang Z, Tao Z, Song S, Pan R, Zhang J, Tu J, Sheen J, Du H. Mitigating growth-stress tradeoffs via elevated TOR signaling in rice. MOLECULAR PLANT 2024; 17:240-257. [PMID: 38053337 DOI: 10.1016/j.molp.2023.12.002] [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: 09/18/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/07/2023]
Abstract
Rice production accounts for approximately half of the freshwater resources utilized in agriculture, resulting in greenhouse gas emissions such as methane (CH4) from flooded paddy fields. To address this challenge, environmentally friendly and cost-effective water-saving techniques have become widely adopted in rice cultivation. However, the implementation of water-saving treatments (WSTs) in paddy-field rice has been associated with a substantial yield loss of up to 50% as well as a reduction in nitrogen use efficiency (NUE). In this study, we discovered that the target of rapamycin (TOR) signaling pathway is compromised in rice under WST. Polysome profiling-coupled transcriptome sequencing (polysome-seq) analysis unveiled a substantial reduction in global translation in response to WST associated with the downregulation of TOR activity. Molecular, biochemical, and genetic analyses revealed new insights into the impact of the positive TOR-S6K-RPS6 and negative TOR-MAF1 modules on translation repression under WST. Intriguingly, ammonium exhibited a greater ability to alleviate growth constraints under WST by enhancing TOR signaling, which simultaneously promoted uptake and utilization of ammonium and nitrogen allocation. We further demonstrated that TOR modulates the ammonium transporter AMT1;1 as well as the amino acid permease APP1 and dipeptide transporter NPF7.3 at the translational level through the 5' untranslated region. Collectively, these findings reveal that enhancing TOR signaling could mitigate rice yield penalty due to WST by regulating the processes involved in protein synthesis and NUE. Our study will contribute to the breeding of new rice varieties with increased water and fertilizer utilization efficiency.
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Affiliation(s)
- Wei Li
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Jiaqi Liu
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Zeqi Li
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China; Hainan Institute of Zhejiang University, Sanya 572025, China
| | - Ruiqiang Ye
- National Key Laboratory of Plant Molecular Genetics, CAS, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wenzhen Chen
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China; Hainan Institute of Zhejiang University, Sanya 572025, China
| | - Yuqing Huang
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Yue Yuan
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Yi Zhang
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Huayi Hu
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Peng Zheng
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Zhongming Fang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agricultural Sciences, Guizhou University, Guiyang 550025, China
| | - Zeng Tao
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Shiyong Song
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Ronghui Pan
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Jian Zhang
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou 311400, China
| | - Jumim Tu
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China
| | - Jen Sheen
- Department of Molecular Biology and Center for Computational and Integrative Biology, Massachusetts General Hospital, and Department of Genetics, Harvard Medical School, Boston, MA 02114, USA
| | - Hao Du
- State Key Laboratory of Rice Biology, College of Agriculture and Biotechnology, Zhejiang University, Yu-Hang-Tang Road No. 866, Hangzhou 310058, China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China; Hainan Institute of Zhejiang University, Sanya 572025, China.
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18
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Lemke MD, Woodson JD. A genetic screen for dominant chloroplast reactive oxygen species signaling mutants reveals life stage-specific singlet oxygen signaling networks. FRONTIERS IN PLANT SCIENCE 2024; 14:1331346. [PMID: 38273946 PMCID: PMC10809407 DOI: 10.3389/fpls.2023.1331346] [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: 10/31/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024]
Abstract
Introduction Plants employ intricate molecular mechanisms to respond to abiotic stresses, which often lead to the accumulation of reactive oxygen species (ROS) within organelles such as chloroplasts. Such ROS can produce stress signals that regulate cellular response mechanisms. One ROS, singlet oxygen (1O2), is predominantly produced in the chloroplast during photosynthesis and can trigger chloroplast degradation, programmed cell death (PCD), and retrograde (organelle-to-nucleus) signaling. However, little is known about the molecular mechanisms involved in these signaling pathways or how many different signaling 1O2 pathways may exist. Methods The Arabidopsis thaliana plastid ferrochelatase two (fc2) mutant conditionally accumulates chloroplast 1O2, making fc2 a valuable genetic system for studying chloroplast 1O2-initiated signaling. Here, we have used activation tagging in a new forward genetic screen to identify eight dominant fc2 activation-tagged (fas) mutations that suppress chloroplast 1O2-initiated PCD. Results While 1O2-triggered PCD is blocked in all fc2 fas mutants in the adult stage, such cellular degradation in the seedling stage is blocked in only two mutants. This differential blocking of PCD suggests that life-stage-specific 1O2-response pathways exist. In addition to PCD, fas mutations generally reduce 1O2-induced retrograde signals. Furthermore, fas mutants have enhanced tolerance to excess light, a natural mechanism to produce chloroplast 1O2. However, general abiotic stress tolerance was only observed in one fc2 fas mutant (fc2 fas2). Together, this suggests that plants can employ general stress tolerance mechanisms to overcome 1O2 production but that this screen was mostly specific to 1O2 signaling. We also observed that salicylic acid (SA) and jasmonate (JA) stress hormone response marker genes were induced in 1O2-stressed fc2 and generally reduced by fas mutations, suggesting that SA and JA signaling is correlated with active 1O2 signaling and PCD. Discussion Together, this work highlights the complexity of 1O2 signaling by demonstrating that multiple pathways may exist and introduces a suite of new 1O2 signaling mutants to investigate the mechanisms controlling chloroplast-initiated degradation, PCD, and retrograde signaling.
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Affiliation(s)
| | - Jesse D. Woodson
- The School of Plant Sciences, University of Arizona, Tucson, AZ, United States
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19
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Rodrigues AP, Pais IP, Leitão AE, Dubberstein D, Lidon FC, Marques I, Semedo JN, Rakocevic M, Scotti-Campos P, Campostrini E, Rodrigues WP, Simões-Costa MC, Reboredo FH, Partelli FL, DaMatta FM, Ribeiro-Barros AI, Ramalho JC. Uncovering the wide protective responses in Coffea spp. leaves to single and superimposed exposure of warming and severe water deficit. FRONTIERS IN PLANT SCIENCE 2024; 14:1320552. [PMID: 38259931 PMCID: PMC10801242 DOI: 10.3389/fpls.2023.1320552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 11/30/2023] [Indexed: 01/24/2024]
Abstract
Climate changes boosted the frequency and severity of drought and heat events, with aggravated when these stresses occur simultaneously, turning crucial to unveil the plant response mechanisms to such harsh conditions. Therefore, plant responses/resilience to single and combined exposure to severe water deficit (SWD) and heat were assessed in two cultivars of the main coffee-producing species: Coffea arabica cv. Icatu and C. canephora cv. Conilon Clone 153 (CL153). Well-watered plants (WW) were exposed to SWD under an adequate temperature of 25/20°C (day/night), and thereafter submitted to a gradual increase up to 42/30°C, and a 14-d recovery period (Rec14). Greater protective response was found to single SWD than to single 37/28°C and/or 42/30°C (except for HSP70) in both cultivars, but CL153-SWD plants showed the larger variations of leaf thermal imaging crop water stress index (CWSI, 85% rise at 37/28°C) and stomatal conductance index (IG, 66% decline at 25/20°C). Both cultivars revealed great resilience to SWD and/or 37/28°C, but a tolerance limit was surpassed at 42/30°C. Under stress combination, Icatu usually displayed lower impacts on membrane permeability, and PSII function, likely associated with various responses, usually mostly driven by drought (but often kept or even strengthened under SWD and 42/30°C). These included the photoprotective zeaxanthin and lutein, antioxidant enzymes (superoxide dismutase, Cu,Zn-SOD; ascorbate peroxidase, APX), HSP70, arabinose and mannitol (involving de novo sugar synthesis), contributing to constrain lipoperoxidation. Also, only Icatu showed a strong reinforcement of glutathione reductase activity under stress combination. In general, the activities of antioxidative enzymes declined at 42/30°C (except Cu,Zn-SOD in Icatu and CAT in CL153), but HSP70 and raffinose were maintained higher in Icatu, whereas mannitol and arabinose markedly increased in CL153. Overall, a great leaf plasticity was found, especially in Icatu that revealed greater responsiveness of coordinated protection under all experimental conditions, justifying low PIChr and absence of lipoperoxidation increase at 42/30°C. Despite a clear recovery by Rec14, some aftereffects persisted especially in SWD plants (e.g., membranes), relevant in terms of repeated stress exposure and full plant recovery to stresses.
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Affiliation(s)
- Ana P. Rodrigues
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
| | - Isabel P. Pais
- Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), Oeiras, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - António E. Leitão
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Danielly Dubberstein
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Centro Univ. Norte do Espírito Santo (CEUNES), Dept. Ciências Agrárias e Biológicas (DCAB), Univ. Federal Espírito Santo (UFES), São Mateus, ES, Brazil
- Assistência Técnica e Gerencial em Cafeicultura - Serviço Nacional de Aprendizagem Rural (SENAR), Porto Velho, RO, Brazil
| | - Fernando C. Lidon
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Isabel Marques
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
| | - José N. Semedo
- Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), Oeiras, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Miroslava Rakocevic
- Centro Univ. Norte do Espírito Santo (CEUNES), Dept. Ciências Agrárias e Biológicas (DCAB), Univ. Federal Espírito Santo (UFES), São Mateus, ES, Brazil
| | - Paula Scotti-Campos
- Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), Oeiras, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Eliemar Campostrini
- Setor de Fisiologia Vegetal, Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Rio de Janeiro, Brazil
| | - Weverton P. Rodrigues
- Setor de Fisiologia Vegetal, Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Rio de Janeiro, Brazil
- Centro de Ciências Agrárias, Naturais e Letras, Universidade Estadual da Região Tocantina do Maranhão, Maranhão, Brazil
| | - Maria Cristina Simões-Costa
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
| | - Fernando H. Reboredo
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Fábio L. Partelli
- Centro Univ. Norte do Espírito Santo (CEUNES), Dept. Ciências Agrárias e Biológicas (DCAB), Univ. Federal Espírito Santo (UFES), São Mateus, ES, Brazil
| | - Fábio M. DaMatta
- Departamento de Biologia Vegetal, Universidade Federal Viçosa (UFV), Viçosa, MG, Brazil
| | - Ana I. Ribeiro-Barros
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - José C. Ramalho
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
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20
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Kappachery S, AlHosani M, Khan TA, AlKharoossi SN, AlMansoori N, AlShehhi SAS, AlMansoori H, AlKarbi M, Sasi S, Karumannil S, Elangovan SK, Shah I, Gururani MA. Modulation of antioxidant defense and PSII components by exogenously applied acetate mitigates salinity stress in Avena sativa. Sci Rep 2024; 14:620. [PMID: 38182773 PMCID: PMC10770181 DOI: 10.1038/s41598-024-51302-5] [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: 09/26/2023] [Accepted: 01/03/2024] [Indexed: 01/07/2024] Open
Abstract
Salinity stress has detrimental effects on various aspects of plant development. However, our understanding of strategies to mitigate these effects in crop plants remains limited. Recent research has shed light on the potential of sodium acetate as a mitigating component against salinity stress in several plant species. Here, we show the role of acetate sodium in counteracting the adverse effects on oat (Avena sativa) plants subjected to NaCl-induced salinity stress, including its impact on plant morphology, photosynthetic parameters, and gene expression related to photosynthesis and antioxidant capacity, ultimately leading to osmoprotection. The five-week experiment involved subjecting oat plants to four different conditions: water, salt (NaCl), sodium acetate, and a combination of salt and sodium acetate. The presence of NaCl significantly inhibited plant growth and root elongation, disrupted chlorophylls and carotenoids content, impaired chlorophyll fluorescence, and down-regulated genes associated with the plant antioxidant defense system. Furthermore, our findings reveal that when stressed plants were treated with sodium acetate, it partially reversed these adverse effects across all analyzed parameters. This reversal was particularly evident in the increased content of proline, thereby ensuring osmoprotection for oat plants, even under stressful conditions. These results provide compelling evidence regarding the positive impact of sodium acetate on various plant development parameters, with a particular focus on the enhancement of photosynthetic activity.
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Affiliation(s)
- Sajeesh Kappachery
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Mohamed AlHosani
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Tanveer Alam Khan
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sara Nouh AlKharoossi
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Nemah AlMansoori
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sara Ali Saeed AlShehhi
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Hamda AlMansoori
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Maha AlKarbi
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Shina Sasi
- Khalifa Center for Genetic Engineering and Biotechnology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sameera Karumannil
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sampath Kumar Elangovan
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Iltaf Shah
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Mayank Anand Gururani
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE.
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21
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Li M, Zhu X, Yu Q, Yu A, Chen L, Kang J, Wang X, Yang T, Yang Q, Long R. FtsH proteases confer protection against salt and oxidative stress in Medicago sativa L. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 338:111915. [PMID: 37944702 DOI: 10.1016/j.plantsci.2023.111915] [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: 02/20/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023]
Abstract
Plant filamentation temperature-sensitive H (FtsH) proteins are ATP-dependent zinc proteases that play an important role in regulating abiotic stress adaptions. Here we explore their potential role in abiotic stress tolerance in alfalfa, an important legume crop. Genomic analysis revealed seventeen MsFtsH genes in five clusters, which generally featured conserved domains and gene structures. Furthermore, the expression of MsFtsHs was found to be tightly associated with abiotic stresses, including osmotic, salt and oxidative stress. In addition, numerous stress responsive cis-elements, including those related to ABA, auxin, and salicylic acid, were identified in their promoter regions. Moreover, MsFtsH8 overexpression was shown to confer tolerance to salt and oxidative stress which was associated with reduced levels of reactive oxygen species, and enhanced expression and activity of antioxidant enzymes. Our results highlight MsFtsHs as key factors in abiotic stress tolerance, and show their potential usefulness for breeding alfalfa and other crops with improved yield and stress tolerance.
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Affiliation(s)
- Mingna Li
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Xiaoxi Zhu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Qianwen Yu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Andong Yu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Lin Chen
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Junmei Kang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Xue Wang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Tianhui Yang
- Institute of Animal Sciences, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, PR China
| | - Qingchuan Yang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Ruicai Long
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
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22
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Aliakbari M, Tahmasebi S, Sisakht JN. Jasmonic acid improves barley photosynthetic efficiency through a possible regulatory module, MYC2-RcaA, under combined drought and salinity stress. PHOTOSYNTHESIS RESEARCH 2024; 159:69-78. [PMID: 38329704 DOI: 10.1007/s11120-023-01074-2] [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: 09/05/2023] [Accepted: 12/28/2023] [Indexed: 02/09/2024]
Abstract
The combined stress of drought and salinity is prevalent in various regions of the world, affects several physiological and biochemical processes in crops, and causes their yield to decrease. Photosynthesis is one of the main processes that are disturbed by combined stress. Therefore, improving the photosynthetic efficiency of crops is one of the most promising strategies to overcome environmental stresses, making studying the molecular basis of regulation of photosynthesis a necessity. In this study, we sought a potential mechanism that regulated a major component of the combined stress response in the important crop barley (Hordeum vulgare L.), namely the Rubisco activase A (RcaA) gene. Promoter analysis of the RcaA gene led to identifying Jasmonic acid (JA)-responsive elements with a high occurrence. Specifically, a Myelocytomatosis oncogenes 2 (MYC2) transcription factor binding site was highlighted as a plausible functional promoter motif. We conducted a controlled greenhouse experiment with an abiotic stress-susceptible barley genotype and evaluated expression profiling of the RcaA and MYC2 genes, photosynthetic parameters, plant water status, and cell membrane damages under JA, combined drought and salinity stress (CS) and JA + CS treatments. Our results showed that applying JA enhances barley's photosynthetic efficiency and water relations and considerably compensates for the adverse effects of combined stress. Significant association was observed among gene expression profiles and evaluated physiochemical characteristics. The results showed a plausible regulatory route through the JA-dependent MYC2-RcaA module involved in photosynthesis regulation and combined stress tolerance. These findings provide valuable knowledge for further functional studies of the regulation of photosynthesis under abiotic stresses toward the development of multiple-stress-tolerant crops.
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Affiliation(s)
- Massume Aliakbari
- Department of Crop Production and Plant Breeding, Shiraz University, Shiraz, Iran.
| | - Sirous Tahmasebi
- Department of Seed and Plant Improvement Research, Fars Agriculture and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran.
| | - Javad Nouripour Sisakht
- Department of Plant Production and Genetics, College of Agricultural Engineering, Isfahan University of Technology, Isfahan, Iran
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23
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Saini D, Bapatla RB, Vemula CK, Gahir S, Bharath P, Gupta KJ, Raghavendra AS. Moderate modulation by S-nitrosoglutathione of photorespiratory enzymes in pea (Pisum sativum) leaves, compared to the strong effects of high light. PROTOPLASMA 2024; 261:43-51. [PMID: 37421536 DOI: 10.1007/s00709-023-01878-y] [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: 03/05/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023]
Abstract
When plants are exposed to water stress, photosynthesis is downregulated due to enhanced reactive oxygen species (ROS) and nitric oxide (NO). In contrast, photorespiratory metabolism protected photosynthesis and sustained yield. Modulation of photorespiration by ROS was established, but the effect of NO on photorespiratory metabolism was unclear. We, therefore, examined the impact of externally added NO by using S-nitrosoglutathione (GSNO), a natural NO donor, in leaf discs of pea (Pisum sativum) under dark or light: moderate or high light (HL). Maximum NO accumulation with GSNO was under high light. The presence of 2-4-carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO), a NO scavenger, prevented the increase in NO, confirming the release of NO in leaves. The increase in S-nitrosothiols and tyrosine-nitrated proteins on exposure to GSNO confirmed the nitrosative stress in leaves. However, the changes by GSNO in the activities and transcripts of five photorespiratory enzymes: glycolate oxidase, hydroxypyruvate reductase, catalase, glycerate kinase, and phosphoglycolate phosphatase activities were marginal. The changes in photorespiratory enzymes caused by GSNO were much less than those with HL. Since GSNO caused only mild oxidative stress, we felt that the key modulator of photorespiration might be ROS, but not NO.
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Affiliation(s)
- Deepak Saini
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Ramesh B Bapatla
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| | | | - Shashibhushan Gahir
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Pulimamidi Bharath
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| | | | - Agepati S Raghavendra
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India.
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24
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Xiang W, Guo Z, Han J, Gao Y, Ma F, Gong X. The apple autophagy-related gene MdATG10 improves drought tolerance and water use efficiency in transgenic apple plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108214. [PMID: 38016369 DOI: 10.1016/j.plaphy.2023.108214] [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: 09/06/2023] [Revised: 10/19/2023] [Accepted: 11/20/2023] [Indexed: 11/30/2023]
Abstract
The Loess Plateau is the main apple production area in China; low precipitation is one of the most important factors limiting apple production here. Autophagy is a conserved process in eukaryotes that recycles cell contents or damaged macromolecules. Previously, we identified an autophagy-related gene MdATG10 from apple plants, which was involved in the responses to stressed conditions. In this study, we found that MdATG10 improved the drought tolerance and water use efficiency (WUE) of transgenic apple plants. MdATG10-overexpressing (OE) apple plants were more tolerant of short-term drought stress, as evidenced by their fewer drought-related injuries, compared with wild-type (WT) apple plants. In addition, the WUE of OE plants was higher than that of WT plants under long-term moderate water deficit conditions. The growth rate, biomass accumulation, photosynthetic efficiency, and stomatal aperture were higher in OE plants than in WT plants under long-term moderate drought conditions. During the process of adapting to drought, the expressions of genes involved in the abscisic acid (ABA) pathway were reduced in OE plants to decrease the synthesis of ABA, which helped maintain the stomatal opening for gas exchange. Furthermore, autophagic activity was higher in OE plants than in WT plants, as evidenced by the higher expressions of ATG genes and the greater number of autophagy bodies. In sum, our results suggested that overexpression of MdATG10 improved drought tolerance and WUE in apple plants, possibly by regulating stomatal movement and enhancing autophagic activity, which then enhanced the photosynthetic efficiency and reduced damage, as well as the reactive oxygen species (ROS) accumulation in apple plants.
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Affiliation(s)
- Weijia Xiang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zijian Guo
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jifa Han
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yiran Gao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Fengwang Ma
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xiaoqing Gong
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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25
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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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26
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Hoh D, Froehlich JE, Kramer DM. Redox regulation in chloroplast thylakoid lumen: The pmf changes everything, again. PLANT, CELL & ENVIRONMENT 2023. [PMID: 38111217 DOI: 10.1111/pce.14789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023]
Abstract
Photosynthesis is the foundation of life on Earth. However, if not well regulated, it can also generate excessive reactive oxygen species (ROS), which can cause photodamage. Regulation of photosynthesis is highly dynamic, responding to both environmental and metabolic cues, and occurs at many levels, from light capture to energy storage and metabolic processes. One general mechanism of regulation involves the reversible oxidation and reduction of protein thiol groups, which can affect the activity of enzymes and the stability of proteins. Such redox regulation has been well studied in stromal enzymes, but more recently, evidence has emerged of redox control of thylakoid lumenal enzymes. This review/hypothesis paper summarizes the latest research and discusses several open questions and challenges to achieving effective redox control in the lumen, focusing on the distinct environments and regulatory components of the thylakoid lumen, including the need to transport electrons across the thylakoid membrane, the effects of pH changes by the proton motive force (pmf) in the stromal and lumenal compartments, and the observed differences in redox states. These constraints suggest that activated oxygen species are likely to be major regulatory contributors to lumenal thiol redox regulation, with key components and processes yet to be discovered.
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Affiliation(s)
- Donghee Hoh
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
| | - John E Froehlich
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - David M Kramer
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
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27
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Saini D, Bharath P, Gahir S, Raghavendra AS. Suppression of photorespiratory metabolism by low O 2 and presence of aminooxyacetic acid induces oxidative stress in Arabidopsis thaliana leaves. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:1851-1861. [PMID: 38222271 PMCID: PMC10784248 DOI: 10.1007/s12298-023-01388-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/04/2023] [Accepted: 11/10/2023] [Indexed: 01/16/2024]
Abstract
Photorespiration, an essential component of plant metabolism, was upregulated under abiotic stress conditions, such as high light or drought. One of the signals for such upregulation was the rise in reactive oxygen species (ROS). Photorespiration was expected to mitigate oxidative stress by reducing ROS levels. However, it was unclear if ROS levels would increase when photorespiration was lowered. Our goal was to examine the redox status in leaves when photorespiratory metabolism was restricted under low O2 (medium flushed with N2 gas) or by adding aminooxyacetic acid (AOA), a photorespiratory inhibitor. We examined the impact of low O2 and AOA in leaves of Arabidopsis thaliana under dark, moderate, or high light. Downregulation of typical photorespiratory enzymes, including catalase (CAT), glycolate oxidase (GO), and phosphoglycolate phosphatase (PGLP) under low O2 or with AOA confirmed the lowering of photorespiratory metabolism. A marked increase in ROS levels (superoxide and H2O2) indicated the induction of oxidative stress. Thus, our results demonstrated for the first time that restricted photorespiratory conditions increased the extent of oxidative stress. We propose that photorespiration is essential to sustain normal ROS levels and optimize metabolism in cellular compartments of Arabidopsis leaves. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01388-4.
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Affiliation(s)
- Deepak Saini
- School of Life Sciences, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Pulimamidi Bharath
- School of Life Sciences, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Shashibhushan Gahir
- School of Life Sciences, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Agepati S. Raghavendra
- School of Life Sciences, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046 India
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Shariatipour N, Shams Z, Heidari B, Richards C. Genetic variation and response to selection of photosynthetic and forage characteristics in Kentucky bluegrass ( Poa pratensis L.) ecotypes under drought conditions. FRONTIERS IN PLANT SCIENCE 2023; 14:1239860. [PMID: 38023869 PMCID: PMC10667697 DOI: 10.3389/fpls.2023.1239860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023]
Abstract
Introduction Evaluation of the effects of water-limited conditions on the photosynthetic characteristics and forage yield is important for enhancing the forage productivity and drought tolerance in Kentucky bluegrass (Poa pratensis L.). Methods In the present study, 100 P. pratensis ecotypes collected from different geographical areas in Iran were assessed under well-watered and drought stress conditions. Genetic variation and response to selection for the photosynthetic characteristics [i.e., net photosynthesis rate (A), stomatal conductance (gs), transpiration rate (Tr), chlorophyll content (Chl), and photochemical efficiency (Fv/Fm)] and forage yield [fresh forage yield (FY) and dry forage yield (Dy)] traits were analyzed during the 2018 and 2019 growing seasons. Results and discussion Drought stress had negative effects on evaluated photosynthesis parameters and significantly reduced dry and fresh forage yields. On average, FY with a 45% decrease and gs with a 326% decrease under drought stress conditions showed the highest reduction rate among forage yield and photosynthesis traits, respectively. Genotypic coefficients of variation (GCV) for FY were lower under drought stress. The estimates of heritability, genetic advance, and genetic advance as percentage of mean showed the predominance of additive gene action for the traits. Overall, the results showed that "Ciakhor", "Damavand", "Karvandan", "Basmenj", "Abr2", "Abrumand", "Borhan", "Hezarkanian", "LasemCheshmeh", "Torshab", and "DoSar" have higher forage yield production with little change between two irrigation regimes, which makes them promising candidates for developing high-yielding drought-tolerant varieties through breeding programs.
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Affiliation(s)
- Nikwan Shariatipour
- Department of Plant Production and Genetics, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Zahra Shams
- Department of Horticulture Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Bahram Heidari
- Department of Plant Production and Genetics, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Christopher Richards
- United States Department of Agriculture, The Agricultural Research Service, National Laboratory for Genetic Resources Preservation, Fort Collins, CO, United States
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Ashikhmin A, Bolshakov M, Pashkovskiy P, Vereshchagin M, Khudyakova A, Shirshikova G, Kozhevnikova A, Kosobryukhov A, Kreslavski V, Kuznetsov V, Allakhverdiev SI. The Adaptive Role of Carotenoids and Anthocyanins in Solanum lycopersicum Pigment Mutants under High Irradiance. Cells 2023; 12:2569. [PMID: 37947647 PMCID: PMC10650732 DOI: 10.3390/cells12212569] [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: 09/26/2023] [Revised: 10/18/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023] Open
Abstract
The effects of high-intensity light on the pigment content, photosynthetic rate, and fluorescence parameters of photosystem II in high-pigment tomato mutants (hp 3005) and low-pigment mutants (lp 3617) were investigated. This study also evaluated the dry weight percentage of low molecular weight antioxidant capacity, expression patterns of some photoreceptor-regulated genes, and structural aspects of leaf mesophyll cells. The 3005 mutant displayed increased levels of photosynthetic pigments and anthocyanins, whereas the 3617 mutant demonstrated a heightened content of ultraviolet-absorbing pigments. The photosynthetic rate, photosystem II activity, antioxidant capacity, and carotenoid content were most pronounced in the high-pigment mutant after 72 h exposure to intense light. This mutant also exhibited an increase in leaf thickness and water content when exposed to high-intensity light, suggesting superior physiological adaptability and reduced photoinhibition. Our findings indicate that the enhanced adaptability of the high-pigment mutant might be attributed to increased flavonoid and carotenoid contents, leading to augmented expression of key genes associated with pigment synthesis and light regulation.
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Affiliation(s)
- Aleksandr Ashikhmin
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia; (A.A.); (M.B.); (A.K.); (G.S.); (A.K.); (V.K.)
| | - Maksim Bolshakov
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia; (A.A.); (M.B.); (A.K.); (G.S.); (A.K.); (V.K.)
| | - Pavel Pashkovskiy
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (V.K.)
| | - Mikhail Vereshchagin
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (V.K.)
| | - Alexandra Khudyakova
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia; (A.A.); (M.B.); (A.K.); (G.S.); (A.K.); (V.K.)
| | - Galina Shirshikova
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia; (A.A.); (M.B.); (A.K.); (G.S.); (A.K.); (V.K.)
| | - Anna Kozhevnikova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (V.K.)
| | - Anatoliy Kosobryukhov
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia; (A.A.); (M.B.); (A.K.); (G.S.); (A.K.); (V.K.)
| | - Vladimir Kreslavski
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino 142290, Russia; (A.A.); (M.B.); (A.K.); (G.S.); (A.K.); (V.K.)
| | - Vladimir Kuznetsov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (V.K.)
| | - Suleyman I. Allakhverdiev
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (P.P.); (M.V.); (A.K.); (V.K.)
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Zhang P, Shen L, Chen J, Li Z, Zhao W, Wen Y, Liu H. Comparative study of the toxicity mechanisms of quinolone antibiotics on soybean seedlings: Insights from molecular docking and transcriptomic analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165254. [PMID: 37394075 DOI: 10.1016/j.scitotenv.2023.165254] [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: 05/02/2023] [Revised: 06/25/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
The ecological effects of quinolone antibiotics (QNs) on non-target organisms have received widespread attention. The toxicological mechanisms of three common QNs, that is, enrofloxacin, levofloxacin, and ciprofloxacin, on soybean seedlings were investigated in this study. Enrofloxacin and levofloxacin caused significant growth inhibition, ultrastructural alterations, photosynthetic suppression, and stimulation of the antioxidant system, with levofloxacin exhibiting the strongest toxic effects. Ciprofloxacin (<1 mg·L-1) did not have a significant effect on the soybean seedlings. As the concentrations of enrofloxacin and levofloxacin increased, antioxidant enzyme activities, malondialdehyde content, and hydrogen peroxide levels also increased. Meanwhile, the chlorophyll content and chlorophyll fluorescence parameters decreased, indicating that the plants underwent oxidative stress and photosynthesis was suppressed. The cellular ultrastructure was also disrupted, which was manifested by swollen chloroplasts, increased starch granules, disintegration of plastoglobules, and mitochondrial degradation. The molecular docking results suggested that the QNs have an affinity for soybean target protein receptors (4TOP, 2IUJ, and 1FHF), with levofloxacin having the highest binding energy (-4.97, -3.08, -3.8, respectively). Transcriptomic analysis has shown that genes were upregulated under the enrofloxacin and levofloxacin treatments were mainly involved in ribosome metabolism and processes to synthesize oxidative stress-related proteins. Downregulated genes in the levofloxacin treatment were primarily enriched in photosynthesis-related pathways, indicating that levofloxacin significantly inhibited gene expression for photosynthesis. Genes expression level by quantitative real-time PCR analysis was consistent with the transcriptomic results. This study confirmed the toxic effect of QNs on soybean seedlings, and provided new insights into the environmental risks of antibiotics.
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Affiliation(s)
- Ping Zhang
- School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Luoqin Shen
- School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Jiayao Chen
- School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Zhiheng Li
- School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Wenlu Zhao
- School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Yuezhong Wen
- MOE Key Laboratory of Environmental Remediation & Ecosystem Health, Institute of Environmental Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, Zhejiang Province, China
| | - Huijun Liu
- School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China.
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Jardim-Messeder D, Cassol D, Souza-Vieira Y, Ehlers Loureiro M, Girke T, Boroni M, Lopes Corrêa R, Coelho A, Sachetto-Martins G. Genome-wide identification of core components of ABA signaling and transcriptome analysis reveals gene circuits involved in castor bean (Ricinus communis L.) response to drought. Gene 2023; 883:147668. [PMID: 37500024 DOI: 10.1016/j.gene.2023.147668] [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: 04/12/2023] [Revised: 07/06/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
Castor bean (Ricinus communis L.) can withstand long periods of water deficit and high temperatures, and therefore has been recognized as a drought-resistant plant species, allowing the study of gene networks involved in drought response and tolerance. The identification of genes networks related to drought response in this plant may yield important information in the characterization of molecular mechanisms correlating changes in the gene expression with the physiological adaptation processes. In this context, gene families related to abscisic acid (ABA) signaling play a crucial role in developmental and environmental adaptation processes of plants to drought stress. However, the families that function as the core components of ABA signaling, as well as genes networks related to drought response, are not well understood in castor bean. In this study 7 RcPYL, 63 RcPP2C, and 6 RcSnRK2 genes were identified in castor bean genome, which was further supported by chromosomal distribution, gene structure, evolutionary relationships, and conserved motif analyses. The castor bean general expression profile was investigated by RNAseq in root and leaf tissues in response to drought stress. These analyses allowed the identification of genes differentially expressed, including genes from the ABA signaling core, genes related to photosynthesis, cell wall, energy transduction, antioxidant response, and transcription factors. These analyses provide new insights into the core components of ABA signaling in castor bean, allow the identification of several molecular responses associated with the high physiological adaptation of castor bean to drought stress, and contribute to the identification of candidate genes for genetic improvement.
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Affiliation(s)
- Douglas Jardim-Messeder
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Daniela Cassol
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Institute for Integrative Genome Biology, Genomics Building, University of California, Riverside, CA 92521, USA
| | - Ygor Souza-Vieira
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Thomas Girke
- Institute for Integrative Genome Biology, Genomics Building, University of California, Riverside, CA 92521, USA
| | - Mariana Boroni
- Bioinformatics and Computational Laboratory, Instituto Nacional de Câncer José Alencar Gomes da Silva, Rio de Janeiro, Brazil
| | - Régis Lopes Corrêa
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Coelho
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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Hafeez A, Ali B, Javed MA, Saleem A, Fatima M, Fathi A, Afridi MS, Aydin V, Oral MA, Soudy FA. Plant breeding for harmony between sustainable agriculture, the environment, and global food security: an era of genomics-assisted breeding. PLANTA 2023; 258:97. [PMID: 37823963 DOI: 10.1007/s00425-023-04252-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/22/2023] [Indexed: 10/13/2023]
Abstract
MAIN CONCLUSION Genomics-assisted breeding represents a crucial frontier in enhancing the balance between sustainable agriculture, environmental preservation, and global food security. Its precision and efficiency hold the promise of developing resilient crops, reducing resource utilization, and safeguarding biodiversity, ultimately fostering a more sustainable and secure food production system. Agriculture has been seriously threatened over the last 40 years by climate changes that menace global nutrition and food security. Changes in environmental factors like drought, salt concentration, heavy rainfalls, and extremely low or high temperatures can have a detrimental effects on plant development, growth, and yield. Extreme poverty and increasing food demand necessitate the need to break the existing production barriers in several crops. The first decade of twenty-first century marks the rapid development in the discovery of new plant breeding technologies. In contrast, in the second decade, the focus turned to extracting information from massive genomic frameworks, speculating gene-to-phenotype associations, and producing resilient crops. In this review, we will encompass the causes, effects of abiotic stresses and how they can be addressed using plant breeding technologies. Both conventional and modern breeding technologies will be highlighted. Moreover, the challenges like the commercialization of biotechnological products faced by proponents and developers will also be accentuated. The crux of this review is to mention the available breeding technologies that can deliver crops with high nutrition and climate resilience for sustainable agriculture.
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Affiliation(s)
- Aqsa Hafeez
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Baber Ali
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Muhammad Ammar Javed
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan
| | - Aroona Saleem
- Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan
| | - Mahreen Fatima
- Faculty of Biosciences, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, 63100, Pakistan
| | - Amin Fathi
- Department of Agronomy, Ayatollah Amoli Branch, Islamic Azad University, Amol, 46151, Iran
| | - Muhammad Siddique Afridi
- Department of Plant Pathology, Federal University of Lavras (UFLA), Lavras, MG, 37200-900, Brazil
| | - Veysel Aydin
- Sason Vocational School, Department of Plant and Animal Production, Batman University, Batman, 72060, Turkey
| | - Mükerrem Atalay Oral
- Elmalı Vocational School of Higher Education, Akdeniz University, Antalya, 07058, Turkey
| | - Fathia A Soudy
- Genetics and Genetic Engineering Department, Faculty of Agriculture, Benha University, Moshtohor, 13736, Egypt
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Li Y, Feng H, Xian S, Wang J, Zheng X, Song X. Phytotoxic effects of polyethylene microplastics combined with cadmium on the photosynthetic performance of maize (Zea mays L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 203:108065. [PMID: 37797385 DOI: 10.1016/j.plaphy.2023.108065] [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: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023]
Abstract
Microplastics (MPs) and cadmium (Cd) has attracted increasing attention due to their combined toxicity to terrestrial vegetation. Photosynthesis which utilizes light energy to synthesize organic substances is crucial for crop production. However, the plant photosynthetic response to the joint toxicity of MPs and Cd is still unknown. Here, we studied the effects of polyethylene (PE) MPs on the photosynthetic performance of two maize cultivars Xianyu 335 (XY) and Zhengdan 958 (ZD) grown in a Cd contaminated soil. Results showed that the leaf Cd concentration in XY and ZD reached 26.1 and 31.9 μg g-1, respectively. PE-MPs did not influence the leaf Cd content, but posed direct and negative effects on photosynthesis by increasing the malondialdehyde content, reducing the chlorophyll content, inhibiting photosynthetic capacity, disrupting the PSII donor side, blocking electron transfer in different photosystems, and suppressing the oxidation and reduction states of PSI. Transcriptomic analysis revealed that the inhibitory effect of combined PE-MPs and Cd on maize photosynthesis was attributed to suppressed expression of the genes encoding PSII, PSI, F-type ATPase, cytochrome b6/f complex, and electron transport between PSII and PSI. Using WGCNA, we identified a MEturquoise module highly correlated with photosynthetic traits. Hub genes bridging carbohydrate metabolism, amino acid metabolism, lipid metabolism, and translation provided the molecular mechanisms of PE-MPs and Cd tolerance in maize plants. The comprehensive information on the phytotoxicity mechanisms of Cd stress in the presence or absence of PE-MPs on the photosynthesis of maize is helpful for cloning Cd and PE-MP resistance genes in the future.
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Affiliation(s)
- Yan Li
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Hongyu Feng
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Shutong Xian
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Jiawei Wang
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Xuebo Zheng
- Institute of Tobacco Research of CAAS, Qingdao, 266101, China.
| | - Xiliang Song
- College of Life Sciences, Dezhou University, De'zhou, 253023, China.
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Ingrisano R, Tosato E, Trost P, Gurrieri L, Sparla F. Proline, Cysteine and Branched-Chain Amino Acids in Abiotic Stress Response of Land Plants and Microalgae. PLANTS (BASEL, SWITZERLAND) 2023; 12:3410. [PMID: 37836150 PMCID: PMC10574504 DOI: 10.3390/plants12193410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023]
Abstract
Proteinogenic amino acids are the building blocks of protein, and plants synthesize all of them. In addition to their importance in plant growth and development, growing evidence underlines the central role played by amino acids and their derivatives in regulating several pathways involved in biotic and abiotic stress responses. In the present review, we illustrate (i) the role of amino acids as an energy source capable of replacing sugars as electron donors to the mitochondrial electron transport chain and (ii) the role of amino acids as precursors of osmolytes as well as (iii) precursors of secondary metabolites. Among the amino acids involved in drought stress response, proline and cysteine play a special role. Besides the large proline accumulation occurring in response to drought stress, proline can export reducing equivalents to sink tissues and organs, and the production of H2S deriving from the metabolism of cysteine can mediate post-translational modifications that target protein cysteines themselves. Although our general understanding of microalgae stress physiology is still fragmentary, a general overview of how unicellular photosynthetic organisms deal with salt stress is also provided because of the growing interest in microalgae in applied sciences.
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Affiliation(s)
| | | | | | - Libero Gurrieri
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, 40126 Bologna, Italy; (R.I.); (E.T.); (P.T.); (F.S.)
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Wu F, Guo J, Duan H, Li T, Wang Y, Wang Y, Wang S, Feng Y. Ocean Acidification Affects the Response of the Coastal Coccolithophore Pleurochrysis carterae to Irradiance. BIOLOGY 2023; 12:1249. [PMID: 37759648 PMCID: PMC10525560 DOI: 10.3390/biology12091249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023]
Abstract
The ecologically important marine phytoplankton group coccolithophores have a global distribution. The impacts of ocean acidification on the cosmopolitan species Emiliania huxleyi have received much attention and have been intensively studied. However, the species-specific responses of coccolithophores and how these responses will be regulated by other environmental drivers are still largely unknown. To examine the interactive effects of irradiance and ocean acidification on the physiology of the coastal coccolithophore species Pleurochrysis carterae, we carried out a semi-continuous incubation experiment under a range of irradiances (50, 200, 500, 800 μmol photons m-2 s-1) at two CO2 concentration conditions of 400 and 800 ppm. The results suggest that the saturation irradiance for the growth rate was higher at an elevated CO2 concentration. Ocean acidification weakened the particulate organic carbon (POC) production of Pleurochrysis carterae and the inhibition rate was decreased with increasing irradiance, indicating that ocean acidification may affect the tolerating capacity of photosynthesis to higher irradiance. Our results further provide new insight into the species-specific responses of coccolithophores to the projected ocean acidification under different irradiance scenarios in the changing marine environment.
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Affiliation(s)
- Fengxia Wu
- College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, China
- School of Oceanography, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Jia Guo
- College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, China
| | - Haozhen Duan
- College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, China
| | - Tongtong Li
- College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, China
| | - Yanan Wang
- College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, China
| | - Yuntao Wang
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
| | - Shiqiang Wang
- College of Marine and Environment, Tianjin University of Science and Technology, Tianjin 300453, China
| | - Yuanyuan Feng
- School of Oceanography, Shanghai Jiao Tong University, Shanghai 200040, China
- Shanghai Frontiers Science Center of Polar Science (SCOPS), Shanghai 200030, China
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Tang X, Sun F, Zhang N, Rana BB, Kharel R, Luo P, Si H. RNA-seq provides insights into potato deubiquitinase responses to drought stress in seedling stage. FRONTIERS IN PLANT SCIENCE 2023; 14:1268448. [PMID: 37780518 PMCID: PMC10539648 DOI: 10.3389/fpls.2023.1268448] [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: 07/28/2023] [Accepted: 08/28/2023] [Indexed: 10/03/2023]
Abstract
Ubiquitination is a specific protein degradation and reversible post-translational modification process that can be reversed by deubiquitinase (DUBs). DUBs can hydrolyze and release ubiquitin in the substrate protein so that the substrate can avoid degradation or change its activity, and it has an impact on plant growth and development, cell cycle, abiotic stress response, and other biological processes. Transcript sequences of potato varieties "DM1-3", "Atlantic" and "Cooperation-88" downloaded from Potato Genome Resources were used for genome-wide identification of the DUB gene family using Hidden Markov Models and verified in the NCBI CD-Search tool. The characteristics of DUB genes from different potato varieties were analyzed including subcellular localization, gene structural motifs, phylogenetic tree, and sequence homology. Polyethylene glycol 6000 (PEG6000) induced drought stress transcriptome analysis was performed on the "Atlantic", and differentially expressed genes were screened, with emphasis on the characterization of deubiquitinase. DUB genes have a complex gene structure, often with a large number of exons and alternative splicing. Their promoters contain abundant abiotic stress-responsive elements, such as 425 MYC, 325 ABRE, and 320 MYB. There are also a large number of orthologous genes in the DUBs of the three potato varieties, and these genes are often clustered in similar regions on the genome. We performed transcriptome sequencing of the potato under PEG-induced drought stress and analyzed it for the first time using the Atlantic as a reference genome. We identified a total of 6067 down-regulated differentially expressed genes (DEGs) and 4950 up-regulated DEGs under PEG-induced drought stress. We screened the expression of DUBs and observed that 120 DUBs were up-regulated where most of them functioned in the nucleus, and the interacting proteins of DUBs were also localized in the nucleus. We have comprehensively identified and analyzed potato DUBs, and the accurately aligned transcriptome data which will further deepen the understanding of DUBs involved in the regulation of osmotic stress.
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Affiliation(s)
- Xun Tang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Fujun Sun
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Ning Zhang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Birendra Bahadur Rana
- Nepal Agricultural Research Council, National Potato Research Program, Lalitpur, Nepal
| | - Raju Kharel
- Department of Genetics and Plant Breeding, Agricultural and Forestry University, Chitwan, Nepal
| | - Pan Luo
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Huaijun Si
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
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El-Shafey NM, Avramova V, Beemster GTS, Korany SM, AbdElgawad H. B 2 O 3 nanoparticles alleviate salt stress in maize leaf growth zones by enhancing photosynthesis and maintaining mineral and redox status. PHYSIOLOGIA PLANTARUM 2023; 175:e14033. [PMID: 37882299 DOI: 10.1111/ppl.14033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/08/2023] [Indexed: 10/27/2023]
Abstract
Salt stress induces significant loss in crop yield worldwide. Although the growth-stimulating effects of micronutrient nanoparticles (NPs) application under salinity have been studied, the molecular and biochemical mechanisms underlying these effects are poorly understood. The large size of maize leaf growth zones provides an ideal model system to sample and investigate the molecular and physiological bases of growth at subzonal resolution. Using kinematic analysis, our study indicated that salinity at 150 mM inhibited maize leaf growth by decreasing cell division and expansion in the meristem and elongation zones. Consistently, salinity downregulated cell cycle gene expression (wee1, mcm4, and cyclin-B2-4). B2 O3 NP (BNP) mitigated the stress-induced growth inhibition by reducing the decrease in cell division and expansion. BNP also enhanced the photosynthesis-related parameters. Simultaneously, chlorophyll, phosphoenolpyruvate carboxylase and ribulose-1,5-bisphosphate carboxylase/oxygenase were stimulated in the mature zone. Concomitant with growth stimulation by BNP, mineral homeostasis, particularly for B and Ca, was monitored. BNP reduced oxidative stress (e.g., lessened H2 O2 generation along the leaf zones and reduced lipid peroxidation in the mature zone) induced by salinity. This resulted from better maintenance of the redox status, that is, increased the glutathione-ascorbate cycle in the meristem and elongation zones, and flavonoids and tocopherol levels in the mature zone. Our study has important implications for assessing the salinity stress impact mitigated by BNP on maize growth, providing a basis to improve the resilience of crop species under salinity stress conditions.
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Affiliation(s)
- Nadia Mohamed El-Shafey
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Viktoriya Avramova
- Department of Biology, Integrated Molecular Plant Physiology Research (IMPRES), University of Antwerp, Antwerp, Belgium
| | - Gerrit T S Beemster
- Department of Biology, Integrated Molecular Plant Physiology Research (IMPRES), University of Antwerp, Antwerp, Belgium
| | - Shereen Magdy Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Hamada AbdElgawad
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
- Department of Biology, Integrated Molecular Plant Physiology Research (IMPRES), University of Antwerp, Antwerp, Belgium
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Gururani MA. Photobiotechnology for abiotic stress resilient crops: Recent advances and prospects. Heliyon 2023; 9:e20158. [PMID: 37810087 PMCID: PMC10559926 DOI: 10.1016/j.heliyon.2023.e20158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023] Open
Abstract
Massive crop failures worldwide are caused by abiotic stress. In plants, adverse environmental conditions cause extensive damage to the overall physiology and agronomic yield at various levels. Phytochromes are photosensory phosphoproteins that absorb red (R)/far red (FR) light and play critical roles in different physiological and biochemical responses to light. Considering the role of phytochrome in essential plant developmental processes, genetically manipulating its expression offers a promising approach to crop improvement. Through modulated phytochrome-mediated signalling pathways, plants can become more resistant to environmental stresses by increasing photosynthetic efficiency, antioxidant activity, and expression of genes associated with stress resistance. Plant growth and development in adverse environments can be improved by understanding the roles of phytochromes in stress tolerance characteristics. A comprehensive overview of recent findings regarding the role of phytochromes in modulating abiotic stress by discussing biochemical and molecular aspects of these mechanisms of photoreceptors is offered in this review.
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Affiliation(s)
- Mayank Anand Gururani
- Biology Department, College of Science, UAE University, Al Ain, United Arab Emirates
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Patel M, Islam S, Husain FM, Yadav VK, Park HK, Yadav KK, Bagatharia S, Joshi M, Jeon BH, Patel A. Bacillus subtilis ER-08, a multifunctional plant growth-promoting rhizobacterium, promotes the growth of fenugreek ( Trigonella foenum-graecum L.) plants under salt and drought stress. Front Microbiol 2023; 14:1208743. [PMID: 37692403 PMCID: PMC10483830 DOI: 10.3389/fmicb.2023.1208743] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/31/2023] [Indexed: 09/12/2023] Open
Abstract
Introduction Sustainable agriculture and meeting the world's food needs face considerable obstacles from abiotic stresses such as soil salinity and drought. This critical issue was addressed by our current study, which sought to uncover multi-trait bioinoculants from hostile ecosystems that could help mitigate salinity and drought stresses at the same time. Methods The Bacillus subtilis ER-08 (BST) strain was isolated from the halotolerant plant Fagonia cretica which was collected from the Little Rann of Kachchh, India. Various biochemical and molecular approaches were applied for the detailed characterization of the BST isolate. Results and discussion The BST isolate demonstrated notable plant growth-promoting qualities. Fenugreek seed biopriming was performed using the BST isolate. The effect of BST seed treatment on fenugreek developmental indices as well as abiotic alleviation was examined under greenhouse conditions. The BST produced 83.7 g ml-1 gibberellins (GA3) and 176.1 g ml-1 indole-3 acetic acid. Moreover, hydrogen cyanide, siderophore, exopolysaccharides (EPS), ammonia, cellulase, protease, pectinase, and chitinase were also produced by the BST strain. Interestingly, 52% of Fusarium oxysporum mycelial growth was suppressed by the BST isolate under in vitro conditions. Furthermore, BST isolates functioned well under several abiotic stress conditions, for instance, salinity (4 and 6 ds m-1), pH (5, 7, and 9), drought (PEG6000 at 10%, 20%, and 30%), and temperature (25°C, 35°C, 37°C, and 55°C). This study indicates that the BST strain might serve as an effective bio-inoculant for minimizing the detrimental effects of abiotic stresses.
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Affiliation(s)
- Margi Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - Shaikhul Islam
- Bangladesh Agricultural Research Council, Dhaka, Bangladesh
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - Hyun-Kyung Park
- Department of Pediatrics, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal, India
- Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, Iraq
| | - Snehal Bagatharia
- Gujarat State Biotechnology Mission (GSBTM), Gandhinagar, Gujarat, India
| | - Madhvi Joshi
- Gujarat Biotechnology Research Centre (GBRC), Gandhinagar, Gujarat, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, Republic of Korea
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
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Sun AZ, Chen JH, Jin XQ, Li H, Guo FQ. Supplementing the Nuclear-Encoded PSII Subunit D1 Induces Dramatic Metabolic Reprogramming in Flag Leaves during Grain Filling in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:3009. [PMID: 37631220 PMCID: PMC10458752 DOI: 10.3390/plants12163009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
Our previous study has demonstrated that the nuclear-origin supplementation of the PSII core subunit D1 protein stimulates growth and increases grain yields in transgenic rice plants by enhancing photosynthetic efficiency. In this study, the underlying mechanisms have been explored regarding how the enhanced photosynthetic capacity affects metabolic activities in the transgenic plants of rice harboring the integrated transgene RbcSPTP-OspsbA cDNA, cloned from rice, under control of the AtHsfA2 promoter and N-terminal fused with the plastid-transit peptide sequence (PTP) cloned from the AtRbcS. Here, a comparative metabolomic analysis was performed using LC-MS in flag leaves of the transgenic rice plants during the grain-filling stage. Critically, the dramatic reduction in the quantities of nucleotides and certain free amino acids was detected, suggesting that the increased photosynthetic assimilation and grain yield in the transgenic plants correlates with the reduced contents of free nucleotides and the amino acids such as glutamine and glutamic acid, which are cellular nitrogen sources. These results suggest that enhanced photosynthesis needs consuming more free nucleotides and nitrogen sources to support the increase in biomass and yields, as exhibited in transgenic rice plants. Unexpectedly, dramatic changes were measured in the contents of flavonoids in the flag leaves, suggesting that a tight and coordinated relationship exists between increasing photosynthetic assimilation and flavonoid biosynthesis. Consistent with the enhanced photosynthetic efficiency, the substantial increase was measured in the content of starch, which is the primary product of the Calvin-Benson cycle, in the transgenic rice plants under field growth conditions.
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Affiliation(s)
- Ai-Zhen Sun
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
| | - Juan-Hua Chen
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
| | - Xue-Qi Jin
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Han Li
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang-Qing Guo
- The National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (A.-Z.S.); (J.-H.C.); (X.-Q.J.); (H.L.)
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Munns R, Millar AH. Seven plant capacities to adapt to abiotic stress. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:4308-4323. [PMID: 37220077 PMCID: PMC10433935 DOI: 10.1093/jxb/erad179] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/11/2023] [Indexed: 05/25/2023]
Abstract
Abiotic stresses such as drought and heat continue to impact crop production in a warming world. This review distinguishes seven inherent capacities that enable plants to respond to abiotic stresses and continue growing, although at a reduced rate, to achieve a productive yield. These are the capacities to selectively take up essential resources, store them and supply them to different plant parts, generate the energy required for cellular functions, conduct repairs to maintain plant tissues, communicate between plant parts, manage existing structural assets in the face of changed circumstances, and shape-shift through development to be efficient in different environments. By illustration, we show how all seven plant capacities are important for reproductive success of major crop species during drought, salinity, temperature extremes, flooding, and nutrient stress. Confusion about the term 'oxidative stress' is explained. This allows us to focus on the strategies that enhance plant adaptation by identifying key responses that can be targets for plant breeding.
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Affiliation(s)
- Rana Munns
- Australian Research Council Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - A Harvey Millar
- Australian Research Council Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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42
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Karumannil S, Khan TA, Kappachery S, Gururani MA. Impact of Exogenous Melatonin Application on Photosynthetic Machinery under Abiotic Stress Conditions. PLANTS (BASEL, SWITZERLAND) 2023; 12:2948. [PMID: 37631160 PMCID: PMC10458501 DOI: 10.3390/plants12162948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/07/2023] [Accepted: 08/13/2023] [Indexed: 08/27/2023]
Abstract
Inhospitable conditions that hinder plant growth and development encompass a range of abiotic stresses, such as drought, extreme temperatures (both low and high), salinity, exposure to heavy metals, and irradiation. The cumulative impact of these stresses leads to a considerable reduction in agricultural productivity worldwide. The generation of reactive oxygen species (ROS) is a shared mechanism of toxicity induced by all these abiotic stimuli in plants, resulting in oxidative damage and membrane instability. Extensive research has shed light on the dual role of melatonin in plants, where it serves as both a growth regulator, fostering growth and development, and a potent protector against abiotic stresses. The inherent potential of melatonin to function as a natural antioxidant positions it as a promising biostimulant for agricultural use, bolstering plants' abilities to withstand a wide array of environmental challenges. Beyond its antioxidant properties, melatonin has demonstrated its capacity to regulate the expression of genes associated with the photosynthetic process. This additional characteristic enhances its appeal as a versatile chemical agent that can be exogenously applied to plants, particularly in adverse conditions, to improve their resilience and optimize photosynthetic efficiency in every phase of the plant life cycle. An examination of the molecular mechanisms underlying the stress-protective effects of exogenous melatonin on the photosynthetic machinery of plants under various abiotic stresses is presented in this paper. In addition, future prospects are discussed for developing stress-tolerant crops for sustainable agriculture in challenging environments.
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Affiliation(s)
| | | | | | - Mayank Anand Gururani
- Biology Department, College of Science, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
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Rodríguez-Vázquez R, Mesa-Marín J. Plant responses to plant growth promoting bacteria: Insights from proteomics. JOURNAL OF PLANT PHYSIOLOGY 2023; 287:154031. [PMID: 37321049 DOI: 10.1016/j.jplph.2023.154031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Affiliation(s)
| | - Jennifer Mesa-Marín
- Department of Plant Biology and Ecology, Faculty of Biology, University of Seville, Seville, Spain.
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Shomali A, Aliniaeifard S, Bakhtiarizadeh MR, Lotfi M, Mohammadian M, Vafaei Sadi MS, Rastogi A. Artificial neural network (ANN)-based algorithms for high light stress phenotyping of tomato genotypes using chlorophyll fluorescence features. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107893. [PMID: 37459804 DOI: 10.1016/j.plaphy.2023.107893] [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: 02/16/2023] [Revised: 06/23/2023] [Accepted: 07/10/2023] [Indexed: 08/13/2023]
Abstract
High light (HL) is a common environmental stress directly imposes photoinhibition on the photosynthesis apparatus. Breeding plants for tolerance against HL is therefore highly demanded. Chlorophyll fluorescence (ChlF) is a sensitive indicator of stress in plants and can be evaluated using OJIP transients. In this study, we compared the ChlF features of plants exposed to HL (1200 μmol m-2 s-1) with that of control plants (300 μmol m-2 s-1). To extract the most reliable ChlF features for discrimination between HL-stressed and non-stressed plants, we applied three artificial neural network (ANN)-based algorithms, namely, Boruta, Support Vector Machine (SVM), and Recursive Feature Elimination (RFE). Feature selection algorithms identified multiple features but only two features, namely the maximal quantum yield of PSII photochemistry (FV/FM) and quantum yield of energy dissipation (ɸD0), remained consistent across all genotypes in control conditions, while exhibited variation in HL. Therefore, considered reliable features for HL stress screening. The selected features were then used for screening 14 tomato genotypes for HL. Genotypes were categorized into three groups, tolerant, semi-tolerant, and sensitive genotypes. Foliar hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents were measured as independent proxies for benchmarking selected features. Tolerant genotypes were attributed with the lowest change in H2O2 and MDA contents, while the sensitive genotypes displayed the highest magnitude of increase in H2O2 and MDA by HL treatment compared to the control. Finally, a FV/FM higher than 0.77 and ɸD0 lower than 0.24 indicates a healthy electron transfer chain (ETC) when tomato plants are exposed to HL.
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Affiliation(s)
- Aida Shomali
- Photosynthesis Laboratory, Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran
| | - Sasan Aliniaeifard
- Photosynthesis Laboratory, Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran; Controlled Environment Agriculture Center, College of Agriculture and Natural Resources, University of Tehran, Tehran, Iran.
| | | | - Mahmoud Lotfi
- Photosynthesis Laboratory, Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran
| | - Mohammad Mohammadian
- Photosynthesis Laboratory, Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran; Controlled Environment Agriculture Center, College of Agriculture and Natural Resources, University of Tehran, Tehran, Iran
| | | | - Anshu Rastogi
- Laboratory of Bioclimatology, Department of Ecology and Environmental Protection, Faculty of Environmental Engineering and Mechanical Engineering, Poznan University of Life Sciences, Piątkowska 94, 60-649, Poznań, Poland
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Smythers AL, Crislip JR, Slone DR, Flinn BB, Chaffins JE, Camp KA, McFeeley EW, Kolling DRJ. Excess manganese increases photosynthetic activity via enhanced reducing center and antenna plasticity in Chlorella vulgaris. Sci Rep 2023; 13:11301. [PMID: 37438371 DOI: 10.1038/s41598-023-35895-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 05/25/2023] [Indexed: 07/14/2023] Open
Abstract
Photosynthesis relies on many easily oxidizable/reducible transition metals found in the metalloenzymes that make up much of the photosynthetic electron transport chain (ETC). One of these is manganese, an essential cofactor of photosystem II (PSII) and a component of the oxygen-evolving complex, the only biological entity capable of oxidizing water. Additionally, manganese is a cofactor in enzymatic antioxidants, notably the superoxide dismutases-which are localized to the chloroplastic membrane. However, unlike other metals found in the photosynthetic ETC, previous research has shown exposure to excess manganese enhances photosynthetic activity rather than diminishing it. In this study, the impact of PSII heterogeneity on overall performance was investigated using chlorophyll fluorescence, a rapid, non-invasive technique that probed for overall photosynthetic efficiency, reducing site activity, and antenna size and distribution. These measurements unveiled an enhanced plasticity of PSII following excess manganese exposure, in which overall performance and reducing center activity increased while antenna size and proportion of PSIIβ centers decreased. This enhanced activity suggests manganese may hold the key to improving photosynthetic efficiency beyond that which is observed in nature.
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Affiliation(s)
- Amanda L Smythers
- Department of Chemistry, Marshall University, Huntington, WV, USA
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | - Danielle R Slone
- Department of Chemistry, Marshall University, Huntington, WV, USA
| | - Brendin B Flinn
- Department of Chemistry, Marshall University, Huntington, WV, USA
| | | | - Kristen A Camp
- Department of Chemistry, Marshall University, Huntington, WV, USA
| | - Eli W McFeeley
- Department of Chemistry, Marshall University, Huntington, WV, USA
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Chen Q, Song Y, Liu K, Su C, Yu R, Li Y, Yang Y, Zhou B, Wang J, Hu G. Genome-Wide Identification and Functional Characterization of FAR1-RELATED SEQUENCE ( FRS) Family Members in Potato ( Solanum tuberosum). PLANTS (BASEL, SWITZERLAND) 2023; 12:2575. [PMID: 37447143 DOI: 10.3390/plants12132575] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/01/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023]
Abstract
FAR1-RELATED SEQUENCE (FRS) transcription factors are generated by transposases and play vital roles in plant growth and development, light signaling transduction, phytohormone response, and stress resistance. FRSs have been described in various plant species. However, FRS family members and their functions remain poorly understood in vegetative crops such as potato (Solanum tuberosum, St). In the present study, 20 putative StFRS proteins were identified in potato via genome-wide analysis. They were non-randomly localized to eight chromosomes and phylogenetic analysis classified them into six subgroups along with FRS proteins from Arabidopsis and tomato. Conserved protein motif, protein domain, and gene structure analyses supported the evolutionary relationships among the FRS proteins. Analysis of the cis-acting elements in the promoters and the expression profiles of StFRSs in various plant tissues and under different stress treatments revealed the spatiotemporal expression patterns and the potential roles of StFRSs in phytohormonal and stress responses. StFRSs were differentially expressed in the cultivar "Xisen 6", which is exposed to a variety of stresses. Hence, these genes may be critical in regulating abiotic stress. Elucidating the StFRS functions will lay theoretical and empirical foundations for the molecular breeding of potato varieties with high light use efficiency and stress resistance.
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Affiliation(s)
- Qingshuai Chen
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Yang Song
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
- College of Life Science, Dezhou University, Dezhou 253023, China
| | - Kui Liu
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Chen Su
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
- College of Life Science, Dezhou University, Dezhou 253023, China
| | - Ru Yu
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Ying Li
- College of Life Science, Dezhou University, Dezhou 253023, China
| | - Yi Yang
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Bailing Zhou
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Jihua Wang
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Guodong Hu
- Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
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Fgaier S, Aarrouf J, Lopez-Lauri F, Lizzi Y, Poiroux F, Urban L. Effect of high salinity and of priming of non-germinated seeds by UV-C light on photosynthesis of lettuce plants grown in a controlled soilless system. FRONTIERS IN PLANT SCIENCE 2023; 14:1198685. [PMID: 37469782 PMCID: PMC10352585 DOI: 10.3389/fpls.2023.1198685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 06/14/2023] [Indexed: 07/21/2023]
Abstract
High salinity results in a decrease in plant photosynthesis and crop productivity. The aim of the present study was to evaluate the effect of UV-C priming treatments of lettuce seeds on photosynthesis of plants grown at high salinity. Non-primed and primed seeds were grown in an hydroponic system, with a standard nutrient solution, either supplemented with 100 mM NaCl (high salinity), or not (control). Considering that leaf and root K+ concentrations remained constant and that chlorophyll fluorescence parameters and root growth were not affected negatively in the high salinity treatment, we conclude that the latter was at the origin of a moderate stress only. A substantial decrease in leaf net photosynthetic assimilation (Anet) was however observed as a consequence of stomatal and non-stomatal limitations in the high salinity treatment. This decrease in Anet translated into a decrease in growth parameters; it may be attributed partially to the high salinity-associated increase in leaf concentration in abscisic acid and decrease in stomatal conductance. Priming by UV-C light resulted in an increase in total photosynthetic electron transport rate and Anet in the leaves of plants grown at high salinity. The increase of the latter translated into a moderate increase in growth parameters. It is hypothesized that the positive effect of UV-C priming on Anet and growth of the aerial part of lettuce plants grown at high salinity, is mainly due to its stimulating effect on leaf concentration in salicylic acid. Even though leaf cytokinins' concentration was higher in plants from primed seeds, maintenance of the cytokinins-to-abscisic acid ratio also supports the idea that UV-C priming resulted in protection of plants exposed to high salinity.
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Affiliation(s)
- Salah Fgaier
- Unité Propre de Recherche Innovante, Equipe de Recherche et d'Innovations Thématiques (ERIT) Plant Science, Interactions and Innovation, Avignon Université, Avignon, France
- Nova Genetic, Zone Anjou Actiparc de Jumelles, Longué-Jumelles, France
| | - Jawad Aarrouf
- Unité Propre de Recherche Innovante, Equipe de Recherche et d'Innovations Thématiques (ERIT) Plant Science, Interactions and Innovation, Avignon Université, Avignon, France
| | - Félicie Lopez-Lauri
- Unité Propre de Recherche Innovante, Equipe de Recherche et d'Innovations Thématiques (ERIT) Plant Science, Interactions and Innovation, Avignon Université, Avignon, France
| | - Yves Lizzi
- Unité Propre de Recherche Innovante, Equipe de Recherche et d'Innovations Thématiques (ERIT) Plant Science, Interactions and Innovation, Avignon Université, Avignon, France
| | - Florine Poiroux
- Nova Genetic, Zone Anjou Actiparc de Jumelles, Longué-Jumelles, France
| | - Laurent Urban
- Unité Propre de Recherche Innovante, Equipe de Recherche et d'Innovations Thématiques (ERIT) Plant Science, Interactions and Innovation, Avignon Université, Avignon, France
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Jiao K, Yang H, Huang X, Liu F, Li S. Effects of phosphorus species and zinc stress on growth and physiology of the marine diatom Thalassiosira weissflogii. CHEMOSPHERE 2023:139308. [PMID: 37364640 DOI: 10.1016/j.chemosphere.2023.139308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 06/28/2023]
Abstract
Human activities, including industrial and agricultural production, as well as domestic sewage discharge, have led to heavy metal pollution and eutrophication in coastal waters. This has caused a deficiency of dissolved inorganic phosphorus (DIP), but an excess dissolved organic phosphorus (DOP) and high concentrations of zinc. However, the impact of high zinc stress and different phosphorus species on primary producers remains unclear. This study examined the impact of different phosphorus species (DIP and DOP) and high zinc stress (1.74 mg L-1) on the growth and physiology of the marine diatom Thalassiosira weissflogii. The results showed that compared to the low zinc treatment (5 μg L-1), high zinc stress significantly decreased the net growth of T. weissflogii, but the decline was weaker in the DOP group than in the DIP group. Based on changes in photosynthetic parameters and nutrient concentrations, the study suggests that the growth inhibition of T. weissflogii under high zinc stress was likely due to an increase in cell death caused by zinc toxicity, rather than a decrease in cell growth caused by photosynthesis damage. Nonetheless, T. weissflogii was able to reduce zinc toxicity by antioxidant reactions through enhancing activities of superoxide dismutase and catalase and by cationic complexation through enhancing extracellular polymeric substances, particularly when DOP served as the phosphorus source. Furthermore, DOP had a unique detoxification mechanism by producing marine humic acid, which is conducive to complexing metal cations. These results provide valuable insights into the response of phytoplankton to environmental changes in coastal oceans, particularly the effects of high zinc stress and different phosphorus species on primary producers.
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Affiliation(s)
- Kailin Jiao
- College of Chemistry, Chemical Engineering & Environmental Science, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province University Key Laboratory of Pollution Monitoring and Control, Minnan Normal University, Zhangzhou, 363000, China
| | - Hang Yang
- College of Chemistry, Chemical Engineering & Environmental Science, Minnan Normal University, Zhangzhou, 363000, China
| | - Xuguang Huang
- College of Chemistry, Chemical Engineering & Environmental Science, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province University Key Laboratory of Pollution Monitoring and Control, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China.
| | - Fengjiao Liu
- College of Chemistry, Chemical Engineering & Environmental Science, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province University Key Laboratory of Pollution Monitoring and Control, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China
| | - Shunxing Li
- College of Chemistry, Chemical Engineering & Environmental Science, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province University Key Laboratory of Pollution Monitoring and Control, Minnan Normal University, Zhangzhou, 363000, China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China
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Zheng X, Zhang B, Pan N, Cheng X, Lu W. Hydrogen Sulfide Alleviates Cadmium Stress by Enhancing Photosynthetic Efficiency and Regulating Sugar Metabolism in Wheat Seedlings. PLANTS (BASEL, SWITZERLAND) 2023; 12:2413. [PMID: 37446974 DOI: 10.3390/plants12132413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Abstract
Hydrogen sulfide (H2S) plays prominent multifunctional roles in the mediation of various physiological processes and stress responses to plants. In this study, hydroponic experiments were carried out to explore the effects of NaHS pretreatment on the growth of wheat (Triticum aestivum L.) under 50 μM cadmium (Cd). Compared with Cd treatment alone, 50 μM NaHS pretreatment increased the plant height, soluble sugar content of shoots and roots, and dry weight of shoots and roots under Cd stress, while the Cd concentration of shoots and roots was significantly reduced by 18.1% and 25.9%, respectively. Meanwhile, NaHS pretreatment protected the photosynthetic apparatus by increasing the net photosynthetic rate and PSII electron transportation rate of wheat leaves under Cd stress. NaHS pretreatment significantly increased the soluble sugar content to maintain the osmotic pressure balance of the leaf cells. The gene expression results associated with photosynthetic carbon assimilation and sucrose synthesis in wheat leaves suggested that the NaHS pretreatment significantly up-regulated the expression of TaRBCL, TaRBCS, and TaPRK, while it down-regulated the expression of TaFBA, TaSuSy, TaSAInv, and TaA/NInv. In summary, NaHS pretreatment improved the resistance of wheat seedlings under Cd stress by increasing the rate of photosynthesis and regulating the expression of genes related to sugar metabolism.
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Affiliation(s)
- Xiang Zheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Bei Zhang
- College of Life Sciences, Westlake University, Hangzhou 310000, China
| | - Ni Pan
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xue Cheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Lu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
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50
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Han X, Zhang D, Hao H, Luo Y, Zhu Z, Kuai B. Transcriptomic Analysis of Three Differentially Senescing Maize ( Zea mays L.) Inbred Lines upon Heat Stress. Int J Mol Sci 2023; 24:9782. [PMID: 37372930 DOI: 10.3390/ijms24129782] [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: 04/29/2023] [Revised: 05/28/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
Maize, one of the world's major food crops, is facing the challenge of rising temperature. Leaf senescence is the most significant phenotypic change of maize under heat stress at the seedling stage, but the underlying molecular mechanism is still unknown. Here, we screened for three inbred lines (PH4CV, B73, and SH19B) that showed differentially senescing phenotypes under heat stress. Among them, PH4CV showed no obviously senescing phenotype under heat stress, while SH19B demonstrated a severely senescing phenotype, with B73 being between the two extremes. Subsequently, transcriptome sequencing showed that differentially expressed genes (DEGs) were generally enriched in response to heat stress, reactive oxygen species (ROS), and photosynthesis in the three inbred lines under heat treatment. Notably, ATP synthesis and oxidative phosphorylation pathway genes were only significantly enriched in SH19B. Then, the expression differences of oxidative phosphorylation pathways, antioxidant enzymes, and senescence-related genes in response to heat stress were analyzed in the three inbred lines. In addition, we demonstrated that silencing ZmbHLH51 by virus-induced gene silencing (VIGS) inhibits the heat-stress-induced senescence of maize leaves. This study helps to further elucidate the molecular mechanisms of heat-stress-induced leaf senescence at the seedling stage of maize.
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Affiliation(s)
- Xiaokang Han
- State Key Laboratory of Genetic Engineering and Fudan Center for Genetic Diversity and Designing Agriculture, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Dingyu Zhang
- State Key Laboratory of Genetic Engineering and Fudan Center for Genetic Diversity and Designing Agriculture, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Haibo Hao
- State Key Laboratory of Genetic Engineering and Fudan Center for Genetic Diversity and Designing Agriculture, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Yong Luo
- State Key Laboratory of Genetic Engineering and Fudan Center for Genetic Diversity and Designing Agriculture, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Ziwei Zhu
- State Key Laboratory of Genetic Engineering and Fudan Center for Genetic Diversity and Designing Agriculture, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Benke Kuai
- State Key Laboratory of Genetic Engineering and Fudan Center for Genetic Diversity and Designing Agriculture, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
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