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Zhong Y, Wu X, Zhang L, Zhang Y, Wei L, Liu Y. The roles of nitric oxide in improving postharvest fruits quality: Crosstalk with phytohormones. Food Chem 2024; 455:139977. [PMID: 38850982 DOI: 10.1016/j.foodchem.2024.139977] [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: 02/20/2024] [Revised: 05/25/2024] [Accepted: 06/02/2024] [Indexed: 06/10/2024]
Abstract
Nowadays, improving the quality of postharvest fruits has become a hot research topic. Nitric oxide (NO) is often regarded as a signaling molecule that delays the postharvest senescence of fruits. Moreover, phytohormones affect the postharvest senescence of fruits. This review mainly describes how NO improves the postharvest quality of fruits by delaying postharvest fruit senescence, mitigating fruit cold damage and controlling postharvest diseases. Furthermore, the crosstalk of NO and multiple plant hormones effectively delays the postharvest senescence of fruits, and the major crosstalk mechanisms include (1) mediating phytohormone signaling. (2) inhibiting ETH production. (3) stimulating antioxidant enzyme activity. (4) decreasing membrane lipid peroxidation. (5) maintaining membrane integrity. (6) inhibiting respiration rate. (7) regulating gene expression related to fruit senescence. This review concluded the roles and mechanisms of NO in delaying postharvest fruit senescence. In addition, the crosstalk mechanisms between NO and various phytohormones on the regulation of postharvest fruit quality are also highlighted, which provides new ideas for the subsequent research.
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Affiliation(s)
- Yue Zhong
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Xiuqiao Wu
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Lingling Zhang
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Yiming Zhang
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Lijuan Wei
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Yiqing Liu
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
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Wei L, Hou X, Feng L, Liu Y, Kong Y, Cui A, Qiao Y, Hu D, Wang C, Liu H, Li C, Wei S, Liao W. SERK3A and SERK3B could be S-nitrosylated and enhance the salt resistance in tomato seedlings. Int J Biol Macromol 2024; 273:133084. [PMID: 38871104 DOI: 10.1016/j.ijbiomac.2024.133084] [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: 04/28/2024] [Revised: 05/31/2024] [Accepted: 06/09/2024] [Indexed: 06/15/2024]
Abstract
Salinity hinders plant growth and development, resulting in reduced crop yields and diminished crop quality. Nitric oxide (NO) and brassinolides (BR) are plant growth regulators that coordinate a plethora of plant physiological responses. Nonetheless, the way in which these factors interact to affect salt tolerance is not well understood. BR is perceived by the BR receptor BRASSINOSTEROID INSENSITIVE 1 (BRI1) and its co-receptor BRI1-associated kinase 1 (BAK1) to form the receptor complex, eventually inducing BR-regulated responses. To response stress, a wide range of NO-mediated protein modifications is undergone in eukaryotic cells. Here, we showed that BR participated in NO-enhanced salt tolerance of tomato seedlings (Solanum lycopersicum cv. Micro-Tom) and NO may activate BR signaling under salt stress, which was related to NO-mediated S-nitrosylation. Further, in vitro and in vivo results suggested that BAK1 (SERK3A and SERK3B) was S-nitrosylated, which was inhibited under salt condition and enhanced by NO. Accordingly, knockdown of SERK3A and SERK3B reduced the S-nitrosylation of BAK1 and resulted in a compromised BR response, thereby abolishing NO-induced salt tolerance. Besides, we provided evidence for the interaction between BRI1 and SERK3A/SERK3B. Meanwhile, NO enhanced BRI1-SERK3A/SERK3B interaction. These results imply that NO-mediated S-nitrosylation of BAK1 enhances the interaction BRI1-BAK1, facilitating BR response and subsequently improving salt tolerance in tomato. Our findings illustrate a mechanism by which redox signaling and BR signaling coordinate plant growth in response to abiotic stress.
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Affiliation(s)
- Lijuan Wei
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China; Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Xuemei Hou
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Li Feng
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Yayu Liu
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Yuanyuan Kong
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Aiyin Cui
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Yali Qiao
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Dongliang Hu
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Chunlei Wang
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Huwei Liu
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
| | - Changxia Li
- College of Agriculture, Guangxi University, 100 East University Road, Xixiangtang District, Nanning 530004, China
| | - Shouhui Wei
- Spice Crops Research Institute, College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China.
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Huang S, Jin S. Melatonin Interaction with Other Phytohormones in the Regulation of Abiotic Stresses in Horticultural Plants. Antioxidants (Basel) 2024; 13:663. [PMID: 38929102 PMCID: PMC11201163 DOI: 10.3390/antiox13060663] [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: 03/10/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
Horticultural crops play a vital role in global food production, nutrition, and the economy. Horticultural crops are highly vulnerable to abiotic stresses. These abiotic stresses hinder plant growth and development by affecting seed germination, impairing photosynthetic activity, and damaging root development, thus leading to a decrease in fruit yield, quality, and productivity. Scientists have conducted extensive research to investigate the mechanisms of resilience and the ability to cope with environmental stresses. In contrast, the use of phytohormones to alleviate the detrimental impacts of abiotic stresses on horticulture plants has been generally recognized as an effective method. Among phytohormones, melatonin (MT) is a novel plant hormone that regulates various plants' physiological functions such as seedling development, root system architecture, photosynthetic efficiency, balanced redox homeostasis, secondary metabolites production, accumulation of mineral nutrient uptake, and activated antioxidant defense system. Importantly, MT application significantly restricted heavy metals (HMs) uptake and increased mineral nutrient accumulation by modifying the root architecture system. In addition, MT is a naturally occurring, multifunctional, nontoxic biomolecule having antioxidant properties. Furthermore, this review described the hormonal interaction between MT and other signaling molecules in order to enhance abiotic stress tolerance in horticulture crops. This review focuses on current research advancements and prospective approaches for enhancing crop tolerance to abiotic stress.
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Affiliation(s)
| | - Songheng Jin
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China;
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Zhang N, Ali S, Huang Q, Yang C, Ali B, Chen W, Zhang K, Ali S, Ulhassan Z, Zhou W. Seed pretreatment with brassinosteroids stimulates sunflower immunity against parasitic weed (Orobanche cumana) infection. PHYSIOLOGIA PLANTARUM 2024; 176:e14324. [PMID: 38705866 DOI: 10.1111/ppl.14324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/13/2024] [Indexed: 05/07/2024]
Abstract
Broomrape (Orobanche cumana) negatively affects sunflower, causing severe yield losses, and thus, there is a need to control O. cumana infestation. Brassinosteroids (BRs) play key roles in plant growth and provide resilience to weed infection. This study aims to evaluate the mechanisms by which BRs ameliorate O. cumana infection in sunflower (Helianthus annuus). Seeds were pretreated with BRs (1, 10, and 100 nM) and O. cumana inoculation for 4 weeks under soil conditions. O. cumana infection significantly reduced plant growth traits, photosynthesis, endogenous BRs and regulated the plant defence (POX, GST), BRs signalling (BAK1, BSK1 to BSK4) and synthesis (BRI1, BR6OX2) genes. O. cumana also elevated the levels of malondialdehyde (MDA), hydroxyl radical (OH-), hydrogen peroxide (H2O2) and superoxide (O2 •-) in leaves/roots by 77/112, 63/103, 56/97 and 54/89%, as well as caused ultrastructural cellular damages in both leaves and roots. In response, plants activated a few enzymes, superoxide dismutase (SOD), peroxidase (POD) and reduced glutathione but were unable to stimulate the activity of ascorbate peroxidase (APX) and catalase (CAT) enzymes. The addition of BRs (especially at 10 nM) notably recovered the ultrastructural cellular damages, lowered the production of oxidative stress, activated the key enzymatic antioxidants and induced the phenolic and lignin contents. The downregulation in the particular genes by BRs is attributed to the increased resilience of sunflower via a susceptible reaction. In a nutshell, BRs notably enhanced the sunflower resistance to O. cumana infection by escalating the plant immunity responses, inducing systemic acquired resistance, reducing oxidative or cellular damages, and modulating the expression of BR synthesis or signalling genes.
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Affiliation(s)
- Na Zhang
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Skhawat Ali
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Qian Huang
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Chong Yang
- Institute of Biotechnology, Xianghu Laboratory, Hangzhou, China
| | - Basharat Ali
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Pakistan
| | - Weiqi Chen
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Kangni Zhang
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Sharafat Ali
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Zaid Ulhassan
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
| | - Weijun Zhou
- Institute of Crop Science, Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy Sensing, Zhejiang University, Hangzhou, China
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Liu T, Xu H, Amanullah S, Du Z, Hu X, Che Y, Zhang L, Jiang Z, Zhu L, Wang D. Deciphering the Enhancing Impact of Exogenous Brassinolide on Physiological Indices of Melon Plants under Downy Mildew-Induced Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:779. [PMID: 38592782 PMCID: PMC10974236 DOI: 10.3390/plants13060779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 04/11/2024]
Abstract
Melon (Cucumis melo L.) is a valuable horticultural crop of the Cucurbitaceae family. Downy mildew (DM), caused by Pseudoperonospora cubensis, is a significant inhibitor of the production and quality of melon. Brassinolide (BR) is a new type of phytohormone widely used in cultivation for its broad spectrum of resistance- and defense-mechanism-improving activity. In this study, we applied various exogenous treatments (0.5, 1.0, and 2.0 mg·L-1) of BR at four distinct time periods (6 h, 12 h, 24 h, and 48 h) and explored the impact of BR on physiological indices and the genetic regulation of melon seedling leaves infected by downy-mildew-induced stress. It was mainly observed that a 2.0 mg·L-1 BR concentration effectively promoted the enhanced photosynthetic activity of seedling leaves, and quantitative real-time polymerase chain reaction (qRT-PCR) analysis similarly exhibited an upregulated expression of the predicted regulatory genes of photosystem II (PSII) CmHCF136 (MELO3C023596.2) and CmPsbY (MELO3C010708.2), thus indicating the stability of the PSII reaction center. Furthermore, 2.0 mg·L-1 BR resulted in more photosynthetic pigments (nearly three times more than the chlorophyll contents (264.52%)) as compared to the control and other treatment groups and similarly upregulated the expression trend of the predicted key enzyme genes CmLHCP (MELO3C004214.2) and CmCHLP (MELO3C017176.2) involved in chlorophyll biosynthesis. Meanwhile, the maximum contents of soluble sugars and starch (186.95% and 164.28%) were also maintained, which were similarly triggered by the upregulated expression of the predicted genes CmGlgC (MELO3C006552.2), CmSPS (MELO3C020357.2), and CmPEPC (MELO3C018724.2), thereby maintaining osmotic adjustment and efficiency in eliminating reactive oxygen species. Overall, the exogenous 2.0 mg·L-1 BR exhibited maintained antioxidant activities, plastid membranal stability, and malondialdehyde (MDA) content. The chlorophyll fluorescence parameter values of F0 (42.23%) and Fv/Fm (36.67%) were also noticed to be higher; however, nearly three times higher levels of NPQ (375.86%) and Y (NPQ) (287.10%) were observed at 48 h of treatment as compared to all other group treatments. Increased Rubisco activity was also observed (62.89%), which suggested a significant role for elevated carbon fixation and assimilation and the upregulated expression of regulatory genes linked with Rubisco activity and the PSII reaction process. In short, we deduced that the 2.0 mg·L-1 BR application has an enhancing effect on the genetic modulation of physiological indices of melon plants against downy mildew disease stress.
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Affiliation(s)
- Tai Liu
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Huichun Xu
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Sikandar Amanullah
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China
| | - Zhiqiang Du
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Xixi Hu
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Ye Che
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Ling Zhang
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Zeyu Jiang
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Lei Zhu
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
| | - Di Wang
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163711, China; (T.L.); (H.X.); (Z.D.); (X.H.); (Y.C.); (L.Z.); (Z.J.); (L.Z.)
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Sharma A, Choudhary P, Chakdar H, Shukla P. Molecular insights and omics-based understanding of plant-microbe interactions under drought stress. World J Microbiol Biotechnol 2023; 40:42. [PMID: 38105277 DOI: 10.1007/s11274-023-03837-4] [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: 09/29/2023] [Accepted: 11/11/2023] [Indexed: 12/19/2023]
Abstract
The detrimental effects of adverse environmental conditions are always challenging and remain a major concern for plant development and production worldwide. Plants deal with such constraints by physiological, biochemical, and morphological adaptations as well as acquiring mutual support of beneficial microorganisms. As many stress-responsive traits of plants are influenced by microbial activities, plants have developed a sophisticated interaction with microbes to cope with adverse environmental conditions. The production of numerous bioactive metabolites by rhizospheric, endo-, or epiphytic microorganisms can directly or indirectly alter the root system architecture, foliage production, and defense responses. Although plant-microbe interactions have been shown to improve nutrient uptake and stress resilience in plants, the underlying mechanisms are not fully understood. "Multi-omics" application supported by genomics, transcriptomics, and metabolomics has been quite useful to investigate and understand the biochemical, physiological, and molecular aspects of plant-microbe interactions under drought stress conditions. The present review explores various microbe-mediated mechanisms for drought stress resilience in plants. In addition, plant adaptation to drought stress is discussed, and insights into the latest molecular techniques and approaches available to improve drought-stress resilience are provided.
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Affiliation(s)
- Aditya Sharma
- Enzyme Technology and Protein Bioinformatics Laboratory, School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Prassan Choudhary
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Hillol Chakdar
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India.
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Khan TA, Kappachery S, Karumannil S, AlHosani M, Almansoori N, Almansoori H, Yusuf M, Tran LSP, Gururani MA. Brassinosteroid Signaling Pathways: Insights into Plant Responses under Abiotic Stress. Int J Mol Sci 2023; 24:17246. [PMID: 38139074 PMCID: PMC10743706 DOI: 10.3390/ijms242417246] [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: 10/22/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
With the growing global population, abiotic factors have emerged as a formidable threat to agricultural food production. If left unaddressed, these stress factors might reduce food yields by up to 25% by 2050. Plants utilize natural mechanisms, such as reactive oxygen species scavenging, to mitigate the adverse impacts of abiotic stressors. Diverse plants exhibit unique adaptations to abiotic stresses, which are regulated by phytohormones at various levels. Brassinosteroids (BRs) play a crucial role in controlling essential physiological processes in plants, including seed germination, xylem differentiation, and reproduction. The BR cascade serves as the mechanism through which plants respond to environmental stimuli, including drought and extreme temperatures. Despite two decades of research, the complex signaling of BRs under different stress conditions is still being elucidated. Manipulating BR signaling, biosynthesis, or perception holds promise for enhancing crop resilience. This review explores the role of BRs in signaling cascades and summarizes their substantial contribution to plants' ability to withstand abiotic stresses.
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Affiliation(s)
- Tanveer Alam Khan
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Sajeesh Kappachery
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Sameera Karumannil
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Mohamed AlHosani
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Nemah Almansoori
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Hamda Almansoori
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Mohammad Yusuf
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
| | - Lam-Son Phan Tran
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
| | - Mayank Anand Gururani
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (T.A.K.); (S.K.); (S.K.); (M.A.); (N.A.); (H.A.); (M.Y.)
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Gholami F, Amerian MR, Asghari HR, Ebrahimi A. Assessing the effects of 24-epibrassinolide and yeast extract at various levels on cowpea's morphophysiological and biochemical responses under water deficit stress. BMC PLANT BIOLOGY 2023; 23:593. [PMID: 38008746 PMCID: PMC10680335 DOI: 10.1186/s12870-023-04548-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 10/19/2023] [Indexed: 11/28/2023]
Abstract
BACKGROUND Due to the factor of water deficit, which has placed human food security at risk by causing a 20% annual reduction in agricultural products, addressing this growing peril necessitates the adoption of inventive strategies aimed at enhancing plant tolerance. One such promising approach is employing elicitors such as 24-epibrassinolide (EBR) and yeast extract, which are potent agents capable of triggering robust defense responses in plants. By employing these elicitors, crops can develop enhanced adaptive mechanisms to combat water deficit and improve their ability to withstand drought condition. This study investigates the impact of different levels of EBR (0, 5, 10 µm) and yeast extract (0 and 12 g/l) on enhancing the tolerance of cowpea to water deficit stress over two growing seasons. RESULTS The findings of this study demonstrate that, the combined application of EBR (especially 10 µm) and yeast extract (12 g/l) can increase seed yield (18%), 20-pod weight (16%), the number of pods per plant (18%), total chlorophyll content (90%), and decrease malondialdehyde content (45%) in cowpea, compared to plants grown under water deficit stress without these treatments. Upon implementing these treatments, impressive results were obtained, with the highest recorded values observed for the seed yield (1867.55 kg/ha), 20-pod weight (16.29 g), pods number per plant (9), and total chlorophyll content (19.88 mg g-1 FW). The correlation analysis indicated a significant relationship between the seed yield, and total chlorophyll (0.74**), carotenoids (0.82**), weight of 20 seeds (0.67**), and number of pods (0.90**). These traits should be prioritized in cowpea breeding programs focusing on water deficit stress. CONCLUSIONS The comprehensive exploration of the effects of EBR and yeast extract across various levels on cowpea plants facing water deficit stress presents a pivotal contribution to the agricultural domain. This research illuminates a promising trajectory for future agricultural practices and users seeking sustainable solutions to enhance crops tolerance. Overall, the implications drawn from this study contribute significantly towards advancing our understanding of plant responses to water deficit stress while providing actionable recommendations for optimizing crop production under challenging environmental conditions.
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Affiliation(s)
- Faride Gholami
- Agronomy and Plant Breeding Department, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran
| | - Mohamad Reza Amerian
- Agronomy and Plant Breeding Department, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran.
| | - Hamid Reza Asghari
- Agronomy and Plant Breeding Department, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran
| | - Amin Ebrahimi
- Agronomy and Plant Breeding Department, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran.
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Shu H, Altaf MA, Mushtaq N, Fu H, Lu X, Zhu G, Cheng S, Wang Z. Physiological and Transcriptome Analysis of the Effects of Exogenous Strigolactones on Drought Responses of Pepper Seedlings. Antioxidants (Basel) 2023; 12:2019. [PMID: 38136139 PMCID: PMC10740728 DOI: 10.3390/antiox12122019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/12/2023] [Accepted: 11/16/2023] [Indexed: 12/24/2023] Open
Abstract
Drought stress significantly restricts the growth, yield, and quality of peppers. Strigolactone (SL), a relatively new plant hormone, has shown promise in alleviating drought-related symptoms in pepper plants. However, there is limited knowledge on how SL affects the gene expression in peppers when exposed to drought stress (DS) after the foliar application of SL. To explore this, we conducted a thorough physiological and transcriptome analysis investigation to uncover the mechanisms through which SL mitigates the effects of DS on pepper seedlings. DS inhibited the growth of pepper seedlings, altered antioxidant enzyme activity, reduced relative water content (RWC), and caused oxidative damage. On the contrary, the application of SL significantly enhanced RWC, promoted root morphology, and increased leaf pigment content. SL also protected pepper seedlings from drought-induced oxidative damage by reducing MDA and H2O2 levels and maintaining POD, CAT, and SOD activity. Moreover, transcriptomic analysis revealed that differentially expressed genes were enriched in ribosomes, ABC transporters, phenylpropanoid biosynthesis, and Auxin/MAPK signaling pathways in DS and DS + SL treatment. Furthermore, the results of qRT-PCR showed the up-regulation of AGR7, ABI5, BRI1, and PDR4 and down-regulation of SAPK6, NTF4, PYL6, and GPX4 in SL treatment compared with drought-only treatment. In particular, the key gene for SL signal transduction, SMXL6, was down-regulated under drought. These results elucidate the molecular aspects underlying SL-mediated plant DS tolerance, and provide pivotal strategies for effectively achieving pepper drought resilience.
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Affiliation(s)
- Huangying Shu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Muhammad Ahsan Altaf
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Naveed Mushtaq
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Huizhen Fu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Xu Lu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Guopeng Zhu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Shanhan Cheng
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Zhiwei Wang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya 572025, China; (H.S.); (M.A.A.); (N.M.); (H.F.); (X.L.); (G.Z.); (S.C.)
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
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10
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Zhang Z, Chen Z, Song H, Cheng S. From plant survival to thriving: exploring the miracle of brassinosteroids for boosting abiotic stress resilience in horticultural crops. FRONTIERS IN PLANT SCIENCE 2023; 14:1218229. [PMID: 37546254 PMCID: PMC10401277 DOI: 10.3389/fpls.2023.1218229] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/26/2023] [Indexed: 08/08/2023]
Abstract
Abiotic stresses pose significant threat to horticultural crop production worldwide. These stresses adversely affect plant growth, development, and ultimately declined crop growth, yield and quality. In recent years, plant scientists have been actively investigating innovative strategies to enhance abiotic stress resilience in crops, and one promising avenue of research focuses on the use of brassinosteroids (BRs). BRs are a class of plant hormones that play crucial roles in various physiological processes, including cell elongation, differentiation, and stress responses. They have emerged as potent regulators of plant growth and development, and their role in improving abiotic stress tolerance is gaining considerable attention. BRs have been shown to mitigate the negative effects of abiotic stresses by modulating key physiological and biochemical processes, including stomatal regulation, antioxidant defense, osmotic adjustment, and nutrient uptake. Abiotic stresses disrupt numerous physiological functions and lead to undesirable phenotypic traits in plants. The use of BRs as a tool to improve crop resilience offers significant promise for sustainable agriculture in the face of increasing abiotic stresses caused by climate change. By unraveling the phenomenon of BRs, this review emphasizes the potential of BRs as an innovative approach for boosting abiotic stress tolerance and improving the overall productivity and quality of horticultural crops. Further research and field trials are necessary to fully harness the benefits of BRs and translate these findings into practical applications for crop production systems.
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Affiliation(s)
- Zhilu Zhang
- College of Chemistry and Environmental Engineering, Ping Dingshan University, Pingdingshan, Henan, China
- Henan Province Key Laboratory of Germplasm Innovation and Utilization of Eco-economic Woody Plant, Pingdingshan, Henan, China
| | - Zhongyu Chen
- People’s Park Management Office of Nanyang City Garden and Greening Center, Garden and Greening Center of Nanyang City, Nanyang, Henan, China
| | - Haina Song
- College of Chemistry and Environmental Engineering, Ping Dingshan University, Pingdingshan, Henan, China
- Henan Province Key Laboratory of Germplasm Innovation and Utilization of Eco-economic Woody Plant, Pingdingshan, Henan, China
| | - Shiping Cheng
- College of Chemistry and Environmental Engineering, Ping Dingshan University, Pingdingshan, Henan, China
- Henan Province Key Laboratory of Germplasm Innovation and Utilization of Eco-economic Woody Plant, Pingdingshan, Henan, China
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11
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Liu C, Wang J, Huang P, Hu C, Gao F, Liu Y, Li Z, Cui B. Response of Soil Microenvironment and Crop Growth to Cyclic Irrigation Using Reclaimed Water and Brackish Water. PLANTS (BASEL, SWITZERLAND) 2023; 12:2285. [PMID: 37375911 DOI: 10.3390/plants12122285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
The scarcity of freshwater resources has increased the use of nonconventional water resources such as brackish water, reclaimed water, etc., especially in water-scarce areas. Whether an irrigation cycle using reclaimed water and brackish water (RBCI) poses a risk of secondary soil salinization to crop yields needs to be studied. Aiming to find an appropriate use for different nonconventional water resources, pot experiments were conducted to study the effects of RBCI on soil microenvironments, growth, physiological characteristics and antioxidation properties of crops. The results showed the following: (1) compared to FBCI, the soil moisture content was slightly higher, without a significant difference, while the soil EC, sodium and chloride ions contents increased significantly under the RBCI treatment. With an increase in the reclaimed water irrigation frequency (Tri), the contents of EC, Na+ and Cl- in the soil decreased gradually, and the difference was significant; the soil moisture content also decreased gradually. (2) There were different effects of the RBCI regime on the soil's enzyme activities. With an increase in the Tri, the soil urease activity indicated a significant upward trend as a whole. (3) RBCI can alleviate the risk of soil salinization to some extent. The soil pH values were all below 8.5, and were without a risk of secondary soil alkalization. The ESP did not exceed 15 percent, and there was no possible risk of soil alkalization except that the ESP in soil irrigated by brackish water irrigation went beyond the limit of 15 percent. (4) Compared with FBCI, no obvious changes appeared to the aboveground and underground biomasses under the RBCI treatment. The RBCI treatment was conducive to increasing the aboveground biomass compared with pure brackish water irrigation. Therefore, short-term RBCI helps to reduce the risk of soil salinization without significantly affecting crop yield, and the irrigation cycle using reclaimed-reclaimed-brackish water at 3 g·L-1 was recommended, according to the experimental results.
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Affiliation(s)
- Chuncheng Liu
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
| | - Juan Wang
- College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, China
| | - Pengfei Huang
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
| | - Chao Hu
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
| | - Feng Gao
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
| | - Yuan Liu
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
| | - Zhongyang Li
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
| | - Bingjian Cui
- Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Key Laboratory of High-Efficient and Safe Utilization of Agriculture Water Resources, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
- Agriculture Water and Soil Environmental Field Science Research Station of Xinxiang City, Chinese Academy of Agricultural Sciences, Xinxiang 453000, China
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12
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Marková H, Tarkowská D, Čečetka P, Kočová M, Rothová O, Holá D. Contents of endogenous brassinosteroids and the response to drought and/or exogenously applied 24- epibrassinolide in two different maize leaves. FRONTIERS IN PLANT SCIENCE 2023; 14:1139162. [PMID: 37332698 PMCID: PMC10272441 DOI: 10.3389/fpls.2023.1139162] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/12/2023] [Indexed: 06/20/2023]
Abstract
Exogenously applied brassinosteroids (BRs) improve plant response to drought. However, many important aspects of this process, such as the potential differences caused by different developmental stages of analyzed organs at the beginning of drought, or by BR application before or during drought, remain still unexplored. The same applies for the response of different endogenous BRs belonging to the C27, C28-and C29- structural groups to drought and/or exogenous BRs. This study examines the physiological response of two different leaves (younger and older) of maize plants exposed to drought and treated with 24-epibrassinolide (epiBL), together with the contents of several C27, C28-and C29-BRs. Two timepoints of epiBL application (prior to and during drought) were utilized to ascertain how this could affect plant drought response and the contents of endogenous BRs. Marked differences in the contents of individual BRs between younger and older maize leaves were found: the younger leaves diverted their BR biosynthesis from C28-BRs to C29-BRs, probably at the very early biosynthetic steps, as the levels of C28-BR precursors were very low in these leaves, whereas C29-BR levels vere extremely high. Drought also apparently negatively affected contents of C28-BRs (particularly in the older leaves) and C29-BRs (particularly in the younger leaves) but not C27-BRs. The response of these two types of leaves to the combination of drought exposure and the application of exogenous epiBL differed in some aspects. The older leaves showed accelerated senescence under such conditions reflected in their reduced chlorophyll content and diminished efficiency of the primary photosynthetic processes. In contrast, the younger leaves of well-watered plants showed at first a reduction of proline levels in response to epiBL treatment, whereas in drought-stressed, epiBL pre-treated plants they were subsequently characterized by elevated amounts of proline. The contents of C29- and C27-BRs in plants treated with exogenous epiBL depended on the length of time between this treatment and the BR analysis regardless of plant water supply; they were more pronounced in plants subjected to the later epiBL treatment. The application of epiBL before or during drought did not result in any differences of plant response to this stressor.
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Affiliation(s)
- Hana Marková
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Czech Academy of Sciences, v.v.i. and Palacký University, Olomouc, Czechia
| | - Petr Čečetka
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
| | - Marie Kočová
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
| | - Olga Rothová
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
| | - Dana Holá
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
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Sheikhi S, Ebrahimi A, Heidari P, Amerian MR, Rashidi-Monfared S, Alipour H. Exogenous 24-epibrassinolide ameliorates tolerance to high-temperature by adjusting the biosynthesis of pigments, enzymatic, non-enzymatic antioxidants, and diosgenin content in fenugreek. Sci Rep 2023; 13:6661. [PMID: 37095206 PMCID: PMC10125993 DOI: 10.1038/s41598-023-33913-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 04/20/2023] [Indexed: 04/26/2023] Open
Abstract
High-temperature stress is widely considered a main plant-growth-limiting factor. The positive effects of 24-epibrassinolide (EBR) as analogs of brassinosteroids (BRs) in modulating abiotic stresses have led this hormone to be referred to as a growth regulator in plants. The current study highlights the influence of EBR on enhancing tolerance to high-temperature and altering the diosgenin content in fenugreek. Different amounts of EBR (4, 8, and 16 μM), harvesting times (6, and 24 h), as well as temperature regimes (23 °C, and 42 °C) were, used as treatments. EBR application under normal temperature and high-temperature stress resulted in decreased malondialdehyde content and electrolyte leakage percentage, while the activity of antioxidant enzymes improved significantly. Exogenous EBR application possibly contributes to activating the nitric oxide, H2O2, and ABA-dependent pathways, enhancing the biosynthesis of abscisic acid and auxin, and regulating the signal transduction pathways, which raises fenugreek tolerance to high-temperature. The SQS (eightfold), SEP (2.8-fold), CAS (11-fold), SMT (17-fold), and SQS (sixfold) expression, considerably increased following EBR application (8 μM) compared to the control. Compared to the control, when the short-term (6 h) high-temperature stress was accompanied by EBR (8 μM), a sixfold increase in diosgenin content was achieved. Our findings highlight the potential role of exogenous 24-epibrassinolide in mitigating the high-temperature stress in fenugreek by stimulating the biosynthesis processes of enzymatic and non-enzymatic antioxidants, chlorophylls, and diosgenin. In conclusion, the current results could be of utmost importance in breeding or biotechnology-based programs of fenugreek and also in the researches related to the engineering of the biosynthesis pathway of diosgenin in this valuable plant.
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Affiliation(s)
- Shahla Sheikhi
- Department of Agriculture and Plant Breeding, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran
| | - Amin Ebrahimi
- Department of Agriculture and Plant Breeding, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran.
| | - Parviz Heidari
- Department of Agriculture and Plant Breeding, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran
| | - Mohamad Reza Amerian
- Department of Agriculture and Plant Breeding, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran
| | - Sajad Rashidi-Monfared
- Plant Breeding and Biotechnology Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Hadi Alipour
- Department of Plant Production and Genetics, Faculty of Agriculture, Urmia University, Urmia, Iran.
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14
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Basit F, Tao J, An J, Song X, Sheteiwy MS, Holford P, Hu J, Jośko I, Guan Y. Nitric oxide and brassinosteroids enhance chromium stress tolerance in Glycine max L. (Merr.) by modulating antioxidative defense and glyoxalase systems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:51638-51653. [PMID: 36811783 DOI: 10.1007/s11356-023-25901-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Chromium (Cr) contamination of agricultural soils is a major threat to human and plant health worldwide and causes reductions in plant growth and crop yields. 24-epibrassinolide (EBL) and nitric oxide (NO) have been shown to ameliorate the reductions in growth caused by the stresses induced by heavy metals; however, the interactions between EBL and NO on the alleviation of Cr-induced phytotoxicity have been poorly studied. Hence, this study was undertaken to examine any beneficial effects of EBL (0.01 µM) and NO (100 µM), applied alone or in combination, on the mitigation of stress induced by Cr (100 µM) in soybean seedlings. Although EBL and NO applied alone reduced the toxic effects of Cr, the combined treatment had the greatest effect. Mitigation of Cr intoxication occurred via reduced Cr uptake and translocation and by ameliorating reductions in water contents, light-harvesting pigments, and other photosynthetic parameters. In addition, the two hormones increased the activity of enzymatic and non-enzymatic defense mechanisms increasing the scavenging of reactive oxygen species, thereby reducing membrane damage and electrolyte leakage. Furthermore, the hormones reduced the accumulation of the toxic compound, methylglyoxal, by amplifying activities of glyoxalase I and glyoxalase II. Thus, applications of NO and EBL can significantly mitigate Cr-phytotoxicity when cultivating soybean plants in Cr-contaminated soils. However, further more-in depth studies including field investigations parallel with calculations of cost to profit ratios and yield losses are requested to validate the effectiveness of NO and/or EBL for remediation agents in Cr-contaminated soils with using key biomarkers (i.e., oxidative stress, antioxidant defense, and osmoprotectants) involved in the uptake, accumulation, and attenuation of Cr toxicity tested in our study.
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Affiliation(s)
- Farwa Basit
- Hainan Research Institute, Zhejiang University, Sanya, 572025, China
- Seed Science Center, The Advanced Seed Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Ji Tao
- Seed Science Center, The Advanced Seed Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Jianyu An
- Seed Science Center, The Advanced Seed Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoyu Song
- Seed Science Center, The Advanced Seed Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Mohamed Salah Sheteiwy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Paul Holford
- School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Jin Hu
- Hainan Research Institute, Zhejiang University, Sanya, 572025, China
- Seed Science Center, The Advanced Seed Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Izabela Jośko
- Institute of Plant Genetics, Breeding and Biotechnology, University of Life Sciences in Lublin, Lublin, Poland
| | - Yajing Guan
- Hainan Research Institute, Zhejiang University, Sanya, 572025, China.
- Seed Science Center, The Advanced Seed Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China.
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15
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Basit F, Ulhassan Z, Mou Q, Nazir MM, Hu J, Hu W, Song W, Sheteiwy MS, Zhou W, Bhat JA, Jeddi K, Hessini K, Guan Y. Seed priming with nitric oxide and/or spermine mitigate the chromium toxicity in rice ( Oryza sativa) seedlings by improving the carbon-assimilation and minimising the oxidative damages. FUNCTIONAL PLANT BIOLOGY : FPB 2023; 50:121-135. [PMID: 35057906 DOI: 10.1071/fp21268] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/03/2021] [Indexed: 05/13/2023]
Abstract
Chromium (Cr) is a serious environmental contaminant that drastically limited the crop yields. Nitric oxide (NO) and spermine (Spm) portrayal significance in improving the plant tolerance against abiotic stresses. Therefore, we investigate the protective efficacy of seed priming with NO (100μM) and/or Spm (0.01mM) in minimising the Cr-induced toxic effects in rice (Oryza sativa L.) plants. Our outcomes revealed that Cr alone treatments (100μM) notably reduced the seed germination rate, plant growth, photosynthetic apparatus, nutrients uptake and antioxidant defence system, but extra generation of reactive oxygen species (ROS). Interestingly, the combine applications of NO and Spm significantly reversed the Cr-induced toxic effects by reducing the Cr-accumulation, maintaining the nutrient balance, improving the germination indices, levels of photosynthetic pigments (chl a by 24.6%, chl b by 36.3%, chl (a+b ) by 57.2% and carotenoids by 79.4%), PSII, photosynthesis gas exchange parameters and total soluble sugar (74.9%) by improving antioxidative enzyme activities. As a result, NO+Spm lowered the accumulation of oxidative markers (H2 O2 by 93.9/70.4%, O2 ˙- by 86.3/69.9% and MDA by 97.2/73.7% in leaves/roots), electrolyte leakage (71.4% in leaves) and improved the plant growth traits. Based on these findings, it can be concluded that NO triggers Spm to minimise the Cr-accumulation and its adverse effects on rice plants. Additionally, combined treatments (NO+Spm) were more effective in minimising the Cr-induced toxic effects in comparison to NO and Spm alone treatments. Thus, co-exposure of NO and Spm may be utilised to boost rice tolerance under Cr stress conditions.
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Affiliation(s)
- Farwa Basit
- Hainan Research Institute, Zhejiang University, Sanya 572025, China; and Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zaid Ulhassan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Qingshan Mou
- Hainan Research Institute, Zhejiang University, Sanya 572025, China; and Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Mudassar Nazir
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jin Hu
- Hainan Research Institute, Zhejiang University, Sanya 572025, China; and Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Weimin Hu
- Hainan Research Institute, Zhejiang University, Sanya 572025, China; and Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Wenjian Song
- Hainan Research Institute, Zhejiang University, Sanya 572025, China; and Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Mohamed Salah Sheteiwy
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Weijun Zhou
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Javaid Akhter Bhat
- International Genome Center, Jiangsu University, Zhenjiang 212013, China; and State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Kaouthar Jeddi
- Laboratory of Plant Biodiversity and Dynamic of Ecosystems in Arid Area, Faculty of Sciences of Sfax, B.P. 1171, Sfax 3000, Tunisia
| | - Kamel Hessini
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Yajing Guan
- Hainan Research Institute, Zhejiang University, Sanya 572025, China; and Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
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16
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Kumar D, Ohri P. Say "NO" to plant stresses: Unravelling the role of nitric oxide under abiotic and biotic stress. Nitric Oxide 2023; 130:36-57. [PMID: 36460229 DOI: 10.1016/j.niox.2022.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/15/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022]
Abstract
Nitric oxide (NO) is a diatomic gaseous molecule, which plays different roles in different strata of organisms. Discovered as a neurotransmitter in animals, NO has now gained a significant place in plant signaling cascade. NO regulates plant growth and several developmental processes including germination, root formation, stomatal movement, maturation and defense in plants. Due to its gaseous state, it is unchallenging for NO to reach different parts of cell and counterpoise antioxidant pool. Various abiotic and biotic stresses act on plants and affect their growth and development. NO plays a pivotal role in alleviating toxic effects caused by various stressors by modulating oxidative stress, antioxidant defense mechanism, metal transport and ion homeostasis. It also modulates the activity of some transcriptional factors during stress conditions in plants. Besides its role during stress conditions, interaction of NO with other signaling molecules such as other gasotransmitters (hydrogen sulfide), phytohormones (abscisic acid, salicylic acid, jasmonic acid, gibberellin, ethylene, brassinosteroids, cytokinins and auxin), ions, polyamines, etc. has been demonstrated. These interactions play vital role in alleviating plant stress by modulating defense mechanisms in plants. Taking all these aspects into consideration, the current review focuses on the role of NO and its interaction with other signaling molecules in regulating plant growth and development, particularly under stressed conditions.
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Affiliation(s)
- Deepak Kumar
- Department of Zoology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
| | - Puja Ohri
- Department of Zoology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
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Gastroprotective, Biochemical and Acute Toxicity Effects of Papaver decaisnei against Ethanol-Induced Gastric Ulcers in Rats. Processes (Basel) 2022. [DOI: 10.3390/pr10101985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Papaver decaisnei (P. decaisnei) has been used as folkloric medicine for many health issues including gastric problems. The current study investigates the gastroprotective roles of P. decaisnei against ethanol-induced ulcers in rodents. Sprague Dawley rats (30) were separated into five groups: the normal group (G1) and the ulcer control group (G2) were orally administered 0.5% carboxymethylcellulose (CMC); the reference group (G3) was administered 20 mg/kg of Omeprazole; two experimental groups were fed with 200 mg/kg (G4) and 400 mg/kg (G5) of the P. decaisnei extract (PDE), respectively. Next, the rats were given absolute ethanol and sacrificed for the analysis of the gastric mucosal injury through microscopic, enzymatic, histologic, and immunohistochemistry assays. The ulcer controls showed significant superficial hemorrhagic gastric mucosal lesions, with a decreased gastric wall mucus and edema production, whereas fewer were found for the reference and plant-treated rats. Furthermore, the PDE pre-treated rats had a significantly reduced the periodic acid-Schiff (PAS) staining intensity, produced the upregulation of the HSP70 protein, and the downregulation of the Bax protein expressions in the stomach epithelium. P. decaisnei displayed a significant role in the upregulation of endogenous antioxidant enzymes (SOD, CAT, and PGE2), significantly reduced malondialdehyde (MDA), TNF-a, IL-6, and upraised the IL-10 levels. Based on the positive impacts, the PDE can be proposed as the protective/treatment agent against gastric ulcers and stomach lesions.
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Ma J, Saleem MH, Alsafran M, Jabri HA, Rizwan M, Nawaz M, Ali S, Usman K. Response of cauliflower (Brassica oleracea L.) to nitric oxide application under cadmium stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 243:113969. [PMID: 35969983 DOI: 10.1016/j.ecoenv.2022.113969] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 07/16/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Soil contamination with cadmium (Cd) is a persistent threat to crop production worldwide. The present study examined the putative roles of nitric oxide (NO) in improving Cd-tolerance in cauliflower (Brassica oleracea L.). The present study was conducted using four different genotypes of B. oleracea named as FD-3, FD-4, FD-2 and Ceilo Blanco which were subjected to the Cd stress at various concentrations i.e., 0, 5, 10 and 20 µM with or without the application of NO i.e., 0.10 mM in the sand containing nutrient Hoagland's solution. Our results illustrated that the increasing levels of Cd in the sand, significantly (P < 0.05) decreased shoot length, root length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, germination percentage, germination index, mean germination time, time to 50% germination, chlorophyll a, chlorophyll b, total chlorophyll and carotenoid contents in all genotypes of B. oleracea. The concentration of malondialdehyde (MDA) and Cd accumulation (roots and shoots) increased significantly (P < 0.05) under the increasing levels of Cd in all genotypes of B. oleracea while antioxidant (enzymatic or non-enzymatic) capacity and nutritional status of the plants was decreased with varying levels of Cd in the sand. From all studied genotypes of B. oleracea, Ceilo Blanco and FD-4 was found to be most sensitive species to the Cd stress under the same levels of the Cd in the medium while FD-2 and FD-3 showed more tolerance to the Cd stress compared to all other genotypes of B. oleracea. Although, toxic effect of Cd in the sand can overcome by the application of NO which not only increased plant growth and nutrients accumulation but also decreased the oxidative damage to the membranous bounded organelles and also Cd accumulation in various parts of the plants in all genotypes of B. oleracea. Hence, it was concluded that application of NO can overcome Cd toxicity in B. oleracea by maintaining the growth regulation and nutritional status of the plant and overcome oxidative damage induced by Cd toxicity in all genotypes of B. oleracea.
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Affiliation(s)
- Jing Ma
- School of Public Administration, Hohai University, Nanjing 210098, China.
| | - Muhammad Hamzah Saleem
- Office of Academic Research, Office of VP for Research & Graduate Studies, Qatar University, Doha 2713, Qatar.
| | - Mohammed Alsafran
- Agricultural Research Station, Office of VP for Research & Graduate Studies, Qatar University, 2713 Doha, Qatar; Central Laboratories Unit (CLU), Office of VP for Research & Graduate Studies, Qatar University, 2713 Doha, Qatar.
| | - Hareb Al Jabri
- Center for Sustainable Development (CSD), College of Arts and Sciences, Qatar University, Doha 2713, Qatar; Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar.
| | - Muhammad Rizwan
- Office of Academic Research, Office of VP for Research & Graduate Studies, Qatar University, Doha 2713, Qatar.
| | - Muhammad Nawaz
- Department of Botany, Government College University, Faisalabad 38000, Pakistan.
| | - Shafaqat Ali
- Department of Environmental Sciences, Government College University, Faisalabad 38000, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung 40402, Taiwan.
| | - Kamal Usman
- Agricultural Research Station, Office of VP for Research & Graduate Studies, Qatar University, 2713 Doha, Qatar.
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Litvinovskaya RP, Shkliarevskyi MA, Kolupaev YE, Kokorev AI, Khripach VA. Involvement of Nitric Oxide in Implementation of a Protective Effect of Epicastasterone and Its Monosalicylate on Wheat Seedlings under Heat Stress. APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s000368382204010x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Guo C, Chen Y, Wang M, Du Y, Wu D, Chu J, Yao X. Exogenous brassinolide improves the antioxidant capacity of Pinellia ternata by enhancing the enzymatic and nonenzymatic defense systems under non-stress conditions. FRONTIERS IN PLANT SCIENCE 2022; 13:917301. [PMID: 35958199 PMCID: PMC9358693 DOI: 10.3389/fpls.2022.917301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Brassinolide (BR) improves the antioxidant capacity of plants under various abiotic stresses. However, it is not clear about the effect of BR on the antioxidant capacity in plants under non-stress conditions. In the present study, the antioxidant defense response of Pinellia ternata was to be assessed by applying BR and propiconazole (Pcz) under non-stress conditions. BR treatment enhanced the flavonoid content, peroxidase, and ascorbate peroxidase (APX) activity by 12.31, 30.62, and 25.08% and led to an increase in 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity by 4.31% and a decrease in malondialdehyde content by 1.04%. Exogenous application of BR improved the expression levels of PAL, CHS, CHI, and DFR genes by 3. 18-, 3. 39-, 2. 21-, and 0.87-fold in flavonoid biosynthesis, PGI, PMI, and GME genes by 6. 60-, 1437. 79-, and 3.11-fold in ascorbic acid (ASA), biosynthesis, and γECs and GSHS genes by 6.08- and 2.61-fold in glutathione (GSH) biosynthesis pathway, and the expression of these genes were inhibited by Pcz treatment. In addition, BR treatment promoted the ASA-GSH cycle by enhancing the expression of APX, DHAR, and MDHAR genes, which were enhanced by 3. 33-, 157. 85-, and 154.91-fold, respectively. These results provided novel insights into the effect of BR on the antioxidant capacity in bulbil of P. ternata under non-stress conditions and useful knowledge of applying BR to enhance the antioxidant capacity of plants.
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Affiliation(s)
- Chenchen Guo
- School of Life Sciences, Hebei University, Baoding, China
| | - Ying Chen
- School of Life Sciences, Hebei University, Baoding, China
| | - Mengyue Wang
- School of Life Sciences, Hebei University, Baoding, China
| | - Yu Du
- School of Life Sciences, Hebei University, Baoding, China
| | - Dengyun Wu
- School of Life Sciences, Hebei University, Baoding, China
| | - Jianzhou Chu
- School of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Xiaoqin Yao
- School of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Baoding, China
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21
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Mfarrej MFB, Wang X, Hamzah Saleem M, Hussain I, Rasheed R, Arslan Ashraf M, Iqbal M, Sohaib Chattha M, Nasser Alyemeni M. Hydrogen sulphide and nitric oxide mitigate the negative impacts of waterlogging stress on wheat (Triticum aestivum L.). PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:670-683. [PMID: 34783146 DOI: 10.1111/plb.13358] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Nitric oxide (NO) and hydrogen sulphide (H2 S) are important gaseous signalling molecules that regulate key physiochemical mechanisms of plants under environmental stresses. A number of attempts have been made to improve waterlogging tolerance in plants, but with limited success. Having said that, NO and H2 S are vital signalling molecules, but their role in mitigating waterlogging effects on crop plants is not well established. We investigated the efficacy of exogenous NO and H2 S to alleviate waterlogging effects in two wheat cultivars (Galaxy-2013 and FSD-2008). Waterlogging produced a noticeable reduction in plant growth, yield, chlorophyll, soluble sugars and free amino acids. Besides, waterlogging induced severe oxidative damage seen as higher cellular TBARS and H2 O2 content. Antioxidant enzyme activity increased together with a notable rise in Fe2+ and Mn2+ content. Proline content was higher in waterlogged plants compared with non-waterlogged plants. In contrast, waterlogging caused a substantial decline in endogenous levels of essential nutrients (K+ , Ca2+ and Mg2+ ). Waterlogged conditions led to Fe2+ and Mn2+ toxicity due to rapid reduction of Fe3+ and Mn3+ in the soil. Exogenous NO and H2 S significantly protected plants from waterlogging effects by enhancing the oxidative defence and regulating nutritional status. Besides, the protective effects of exogenous NO were more prominent as compared with effects of H2 S. Further, we did not study the effect of H2 S and NO on photosynthetic attributes and expression of stress-related genes. Therefore, future studies should examine the effects of H2 S and NO on wheat physiology and gene expression under waterlogging.
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Affiliation(s)
- M F B Mfarrej
- Department of Life and Environmental Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
| | - X Wang
- College of Life Sciences, Yan'an University, Yan'an, China
| | - M Hamzah Saleem
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - I Hussain
- Department of Botany, Government College University Faisalabad and Pakistan, Faisalabad, Pakistan
| | - R Rasheed
- Department of Botany, Government College University Faisalabad and Pakistan, Faisalabad, Pakistan
| | - M Arslan Ashraf
- Department of Botany, Government College University Faisalabad and Pakistan, Faisalabad, Pakistan
| | - M Iqbal
- Department of Botany, Government College University Faisalabad and Pakistan, Faisalabad, Pakistan
| | - M Sohaib Chattha
- School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, USA
| | - M Nasser Alyemeni
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia
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22
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Tyagi A, Sharma S, Ali S, Gaikwad K. Crosstalk between H 2 S and NO: an emerging signalling pathway during waterlogging stress in legume crops. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:576-586. [PMID: 34693601 DOI: 10.1111/plb.13319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/04/2021] [Indexed: 06/13/2023]
Abstract
In legumes, waterlogging is a major detrimental factor leading to huge yield losses. Generally, legumes lack tolerance to submergence, and conventional breeding to develop tolerant varieties are limited due to the lack of tolerant germplasm and potential target genes. Moreover, our understanding of the various signalling cascades, their interactions and key pathways induced during waterlogging is limited. Here, we focus on the role of two important plant signalling molecules, viz. hydrogen sulphide (H2 S) and nitric oxide (NO), during waterlogging stress in legumes. Plants and soil microbes produce these signalling molecules both endogenously and exogenously under various stresses, including waterlogging. NO and H2 S are known to regulate key physiological pathways, such as stomatal closure, leaf senescence and regulation of numerous stress signalling pathways, while NO plays a pivotal role in adventitious root formation during waterlogging. The crosstalk between H2 S and NO is synergistic because of the resemblance of their physiological effects and proteomic functions, which mainly operate through cysteine-dependent post-translational modifications via S-nitrosation and persulfidation. Such knowledge has provided novel platforms for researchers to unravel the complexity associated with H2 S-NO signalling and interactions with plant stress hormones. This review provides an overall summary on H2 S and NO, including biosynthesis, biological importance, crosstalk, transporter regulation as well as understanding their role during waterlogging using 'multi-omics' approach. Understanding H2 S and NO signalling will help in deciphering the metabolic interactions and identifying key regulatory genes that could be used for developing waterlogging tolerance in legumes.
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Affiliation(s)
- A Tyagi
- ICAR - National Institute for Plant Biotechnology, New Delhi, India
| | - S Sharma
- ICAR - National Institute for Plant Biotechnology, New Delhi, India
| | - S Ali
- Department of Biotechnology, Yeungnam University, Gyeongsan Gyeongbuk, Republic of Korea
| | - K Gaikwad
- ICAR - National Institute for Plant Biotechnology, New Delhi, India
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The Hormetic Effects of a Brassica Water Extract Triggered Wheat Growth and Antioxidative Defense under Drought Stress. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094582] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Drought is a major environmental constraint, affecting agricultural productivity worldwide. Allelopathic hormesis, the low-dose stimulatory effect of allelochemicals, offers a pragmatic solution in alleviating the adverse effects of drought in plants. This study, therefore, is conducted to evaluate the potential of a brassica water extract (BWE) in enhancing drought tolerance in wheat. The experiment was based on three factors, viz, drought with three levels (100%, 60% and 30% field capacity; FC), different concentrations of a brassica water extract (control, water spray, 0.5%, 1.0%, 1.5%, 2.0%, 2.5% and 3.0%) and two wheat cultivars, Ihsan-2016 (drought tolerant) and Galaxy-2013 (drought-sensitive). Drought stress, particularly at 30% FC, decreased the morpho-physiological attributes of both wheat cultivars; nevertheless, the application of brassica water extract, particularly at 2.0%, effectively enhanced tolerance against drought stress. Compared with the control, the application of 2.0% brassica water extract increased the morphological attributes, such as seedling length and the fresh and dry weights of both wheat cultivars in the range of 2–160% under 30% field capacity. In addition, the 2.0% brassica water extract triggered the activities of antioxidant enzymes, including superoxide dismutase, catalase and peroxidase (11–159%), decreased the hydrogen peroxide content (14–30%) and enhanced chlorophyll a and b and carotenoid contents (19–154%), as compared to the control, in both wheat cultivars under 30% field capacity. The vigorous growth and higher drought tolerance in wheat cultivars with brassica water extract application were related to improved chlorophyll contents and physiological attributes, a better antioxidant defense system and a reduced H2O2-based damaging effect.
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24
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Integration of the Physiology, Transcriptome and Proteome Reveals the Molecular Mechanism of Drought Tolerance in Cupressus gigantea. FORESTS 2022. [DOI: 10.3390/f13030401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Drought stress can dramatically impair woody plant growth and restrict the geographical distribution of many tree species. To better understand the dynamics between the response and mechanism of Cupressus gigantea to drought and post-drought recovery, a comparative analysis was performed, relying on physiological measurements, RNA sequencing (RNA-Seq) and two-dimensional gel electrophoresis (2-DE) proteins. In this study, the analyses revealed that photosynthesis was seriously inhibited, while osmolyte contents, antioxidant enzyme activity and non-enzymatic antioxidant contents were all increased under drought stress in seedlings. Re-watering led to a recovery in most of the parameters analyzed, mainly the photosynthetic parameters and osmolyte contents. Transcriptomic and proteomic profiling suggested that most of the differentially expressed genes (DEGs) and differentially expressed proteins (DEPs) were specifically altered, and a few were consistently altered. Drought induced a common reduction in the level of DEGs and DEPs associated with photosynthesis. Notably, DEGs and DEPs involved in reactive oxygen species (ROS) scavenging, such as ascorbate oxidase and superoxide dismutase (SOD), showed an inverse pattern under desiccation. This study may improve our understanding of the underlying molecular mechanisms of drought resistance in C. gigantea and paves the way for more detailed molecular analysis of the candidate genes.
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Wang Y, Yang Z, Shi L, Yang R, Guo H, Zhang S, Geng G. Transcriptome analysis of Auricularia fibrillifera fruit-body responses to drought stress and rehydration. BMC Genomics 2022; 23:58. [PMID: 35033026 PMCID: PMC8760723 DOI: 10.1186/s12864-021-08284-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 12/28/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Drought stress severely restricts edible fungus production. The genus Auricularia has a rare drought tolerance, a rehydration capability, and is nutrient rich. RESULTS The key genes and metabolic pathways involved in drought-stress and rehydration were investigated using a transcriptome analysis to clarify the relevant molecular mechanisms. In total, 173.93 Mb clean reads, 26.09 Gb of data bulk, and 52,954 unigenes were obtained. Under drought-stress and rehydration conditions, 14,235 and 8539 differentially expressed genes, respectively, were detected. 'Tyrosine metabolic', 'caffeine metabolism', 'ribosome', 'phagosome', and 'proline and arginine metabolism', as well as 'peroxisome' and 'mitogen-activated protein kinase signaling' pathways, had major roles in A. fibrillifera responses to drought stress. 'Tyrosine' and 'caffeine metabolism' might reveal unknown mechanisms for the antioxidation of A. fibrillifera under drought-stress conditions. During the rehydration process, 'diterpenoid biosynthesis', 'butanoate metabolism', 'C5-branched dibasic acid', and 'aflatoxin biosynthesis' pathways were significantly enriched. Gibberellins and γ-aminobutyric acid were important in the recovery of A. fibrillifera growth after rehydration. Many genes related to antibiotics, vitamins, and other health-related ingredients were found in A. fibrillifera. CONCLUSION These findings suggested that the candidate genes and metabolites involved in crucial biological pathways might regulate the drought tolerance or rehydration of Auricularia, shedding light on the corresponding mechanisms and providing new potential targets for the breeding and cultivation of drought-tolerant fungi.
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Affiliation(s)
- Yiqin Wang
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Zhifen Yang
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Luxi Shi
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Rui Yang
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Hao Guo
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Suqin Zhang
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China.
| | - Guangdong Geng
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China.
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Ahmad S, Wang GY, Muhammad I, Zeeshan M, Zhou XB. Melatonin and KNO 3 Application Improves Growth, Physiological and Biochemical Characteristics of Maize Seedlings under Waterlogging Stress Conditions. BIOLOGY 2022; 11:biology11010099. [PMID: 35053096 PMCID: PMC8773118 DOI: 10.3390/biology11010099] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 02/07/2023]
Abstract
Simple Summary Waterlogging is one of the serious abiotic stresses that retards plant growth and reduces crop productivity. Therefore, exploring effective ways for alleviating the impacts of waterlogging stress has important theoretical and practical applications. Melatonin is a pleiotropic molecule that influences many diverse actions to enhance plant growth. Therefore, investigating efficient waterlogging mitigation measures has both theoretical and practical significance. The objectives of the present research were to examine the efficiency of melatonin and KNO3 seed soaking and foliar application on alleviating the waterlogging inhibited growth performance of maize seedlings. The results showed that melatonin and KNO3 significantly improved the plant growth and biochemical parameters of maize seedlings under waterlogging stress conditions. Overall, the application of 100 µM melatonin with 0.50 g KNO3 via seed soaking and foliar spray can be used as a potential mitigating strategy for improving the growth of maize seedlings and alleviating the ill effects of waterlogging stress. Abstract Waterlogging is one of the serious abiotic stresses that inhibits crop growth and reduces productivity. Therefore, investigating efficient waterlogging mitigation measures has both theoretical and practical significance. The objectives of the present research were to examine the efficiency of melatonin and KNO3 seed soaking and foliar application on alleviating the waterlogging inhibited growth performance of maize seedlings. In this study, 100 µM melatonin and different levels (0.25, 0.50 and 0.75 g) of potassium nitrate (KNO3) were used in seed soaking and foliar applications. For foliar application, treatments were applied at the 7th leaf stage one week after the imposition of waterlogging stress. The results showed that melatonin with KNO3 significantly improved the plant growth and biochemical parameters of maize seedlings under waterlogging stress conditions. However, the application of melatonin with KNO3 treatments increased plant growth characteristics, chlorophyll content, and the net photosynthetic rate at a variable rate under waterlogging stress. Furthermore, melatonin with KNO3 treatments significantly reduced the accumulation of hydrogen peroxide (H2O2) and malondialdehyde (MDA), and it decreased the activity of pyruvate decarboxylase and alcohol dehydrogenase, while increasing enzymatic activities and soluble protein content of maize seedlings under waterlogging stress conditions. Overall, our results indicated that seed soaking with 100 µM melatonin and 0.50 g KNO3 was the most effective treatment that significantly improved the plant growth characteristics, chlorophyll content, photosynthetic rate, and enzymatic activity of maize seedling under waterlogging conditions.
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Guo C, Li J, Li M, Xu X, Chen Y, Chu J, Yao X. Regulation Mechanism of Exogenous Brassinolide on Bulbil Formation and Development in Pinellia ternata. FRONTIERS IN PLANT SCIENCE 2022; 12:809769. [PMID: 35069668 PMCID: PMC8766408 DOI: 10.3389/fpls.2021.809769] [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: 11/05/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
The bulbil is the propagative organ of the P. ternata, which has a great effect on the yield of P. ternata. It is well known that plant hormones play important roles in bulbil formation and development. However, there is not clear about brassinolide (BR) regulation on bulbil formation and development. In this study, we revealed the effects of BR and BR biosynthesis inhibitors (propiconazole, Pcz) application on the histological observation, starch and sucrose metabolism, photosynthesis pathway, and hormone signaling pathway of P. ternata. The results showed that BR treatment reduced starch catabolism to maltodextrin and maltose in bulbil by decreasing BAM and ISA genes expression and increased cellulose catabolism to D-glucose in bulbil by enhancing edg and BGL genes expression. BR treatment enhanced the photosynthetic pigment content and potential maximum photosynthetic capacity and improved the photoprotection ability of P. ternata by increasing the dissipation of excess light energy to heat, thus reduced the photodamage in the PSII center. BR treatment increased the GA and BR content in bulbil of P. ternata, and decreased the ABA content in bulbil of P. ternata. Pcz treatment increased the level of GA, SL, ABA, and IAA in bulbil of P. ternata. BR regulated the signal transduction of BR, IAA, and ABA to regulate the formation and development of bulbil in P. ternata. These results provide molecular insight into BR regulation on bulbil formation and development.
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Affiliation(s)
- Chenchen Guo
- College of Life Sciences, Hebei University, Baoding, China
| | - Jigang Li
- College of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Minghui Li
- College of Life Sciences, Hebei University, Baoding, China
| | - Xihang Xu
- College of Life Sciences, Hebei University, Baoding, China
| | - Ying Chen
- College of Life Sciences, Hebei University, Baoding, China
| | - Jianzhou Chu
- College of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Xiaoqin Yao
- College of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
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28
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Guo C, Li M, Chen Y, Xu X, Liu C, Chu J, Yao X. Seed bulb size influences the effects of exogenous brassinolide on yield and quality of Pinellia ternata. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:117-126. [PMID: 34693612 DOI: 10.1111/plb.13314] [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: 05/25/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
In recent years, natural Pinellia ternata populations of have gradually been exhausted, while the cultivated yield has been limited due to lack of research and uncertain climate condition. Therefore, it is necessary to explore methods of improving yield and quality in P. ternata using brassinolide (BR) treatments and choice of a suitable seed bulb size. This article reports the effects of BR and two seed bulb sizes (diameter: 0.5-1.0 cm and 1.0-1.5 cm) on active and nutrient components and antioxidant activity in P. ternata. The experiment included six levels of BR (0, 0.05, 0.10, 0.50, 1.00 and 2.00 mg l-1 ). The tuber yield of the two seed bulb sizes and bulbil yield of small seed bulbs increased 5.67%, 22.66% and 69.23% by day 105 after 0.50 mg l-1 BR treatment, compared with the control. On day 105, only 0.05 mg l-1 BR increased scores in principal components analysis (PCA) in tubers of small seed bulbs by 167.29%, and 0.05 and 0.50 mg l-1 BR increased PCA score in bulbils of large seed bulbs by 145.66% and 252.97%, respectively, compared with the control. Significant BR × seed bulb size interactions were found on yield and quality of P. ternata. The results indicate that BR effects on yield and quality of tubers and bulbils of P. ternata are not only related to BR concentration but also to seed bulb size.
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Affiliation(s)
- C Guo
- College of Life Sciences, Hebei University, Baoding, China
| | - M Li
- College of Life Sciences, Hebei University, Baoding, China
| | - Y Chen
- College of Life Sciences, Hebei University, Baoding, China
| | - X Xu
- College of Life Sciences, Hebei University, Baoding, China
| | - C Liu
- College of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - J Chu
- College of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - X Yao
- College of Life Sciences, Hebei University, Baoding, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, China
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Mishra S, Sahu G, Shaw BP. Integrative small RNA and transcriptome analysis provides insight into key role of miR408 towards drought tolerance response in cowpea. PLANT CELL REPORTS 2022; 41:75-94. [PMID: 34570259 DOI: 10.1007/s00299-021-02783-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Drought stress response studies and overexpression of vun-miR408 proved it to be essential for abiotic stress tolerance in cowpea. Small RNA and transcriptome sequencing of an elite high-yielding drought-tolerant Indian cowpea cultivar, Pusa Komal revealed a differential expression of 198 highly conserved, 21 legume-specific, 14 less-conserved, and 10 novel drought-responsive microRNAs (miRNAs) along with 3391 (up-regulated) and 3799 (down-regulated) genes, respectively, in the leaf and root libraries. Among the differentially expressed miRNAs, vun-miR408-3p, showed an up-regulation of 3.53-log2-fold change under drought stress. Furthermore, laccase 12 (LAC 12) was identified as the potential target of vun-miR408-3p using 5' RNA ligase-mediated rapid amplification of cDNA ends. The stable transgenic cowpea lines overexpressing artificial vun-miR408-3p (OX-amiR408) displayed enhanced drought and salinity tolerance as compared to the wild-type plants. An average increase of 30.17% in chlorophyll, 26.57% in proline, and 27.62% in relative water content along with lesser cellular H2O2 level was observed in the transgenic lines in comparison with the wild-type plants under drought stress. Additionally, the scanning electron microscopic study revealed a decrease in the stomatal aperture and an increase in the trichome density in the transgenic lines. The expression levels of laccase 3 and laccase 12, the potential targets of miR408, related to lipid catabolic processes showed a significant reduction in the wild-type plants under drought stress and the transgenic lines, indicating the regulation of lignin content as a plausibly essential trait related to the drought tolerance in cowpea. Taken together, this study primarily focused on identification of drought-responsive miRNAs and genes in cowpea, and functional validation of role of miR408 towards drought stress response in cowpea.
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Affiliation(s)
- Sagarika Mishra
- Abiotic Stress and Agro-Biotechnology Lab, Institute of Life Sciences, Bhubaneswar, India.
| | - Gyanasri Sahu
- Abiotic Stress and Agro-Biotechnology Lab, Institute of Life Sciences, Bhubaneswar, India
- Regional Centre for Biotechnology, Faridabad, India
| | - Birendra Prasad Shaw
- Abiotic Stress and Agro-Biotechnology Lab, Institute of Life Sciences, Bhubaneswar, India
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Ma J, Saleem MH, Yasin G, Mumtaz S, Qureshi FF, Ali B, Ercisli S, Alhag SK, Ahmed AE, Vodnar DC, Hussain I, Marc RA, Chen F. Individual and combinatorial effects of SNP and NaHS on morpho-physio-biochemical attributes and phytoextraction of chromium through Cr-stressed spinach ( Spinacia oleracea L.). FRONTIERS IN PLANT SCIENCE 2022; 13:973740. [PMID: 36061765 PMCID: PMC9428630 DOI: 10.3389/fpls.2022.973740] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/12/2022] [Indexed: 05/19/2023]
Abstract
Chromium (Cr) is a toxic heavy metal that contaminates soil and water resources after its discharge from different industries. A pot experiment was conducted to determine the effects of single and/or combined application of sodium nitroprusside (SNP) (250 μM) and sodium hydrogen sulfide (NaHS) (1 mM) on growth, photosynthetic pigments, gas exchange characteristics, oxidative stress biomarkers, antioxidant machinery (enzymatic and non-enzymatic antioxidants), ion uptake, organic acid exudation, and Cr uptake of spinach (Spinacia oleracea L.) exposed to severe Cr stress [Cr: 0 (no Cr), 150, and 300 μM]. Our results depicted that Cr addition to the soil significantly (P < 0.05) decreased plant growth and biomass, gas exchange attributes, and mineral uptake by S. oleracea when compared to the plants grown without the addition of Cr. However, Cr toxicity boosted the production of reactive oxygen species (ROS) by increasing the content of malondialdehyde (MDA), which is the indication of oxidative stress in S. oleracea, and was also manifested by hydrogen peroxide (H2O2) content and electrolyte leakage to the membrane-bound organelles. The results showed that the activities of various antioxidative enzymes, such as superoxidase dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), and the content of non-enzymatic antioxidants, such as phenolic, flavonoid, ascorbic acid, and anthocyanin, initially increased with an increase in the Cr concentration in the soil. The results also revealed that the levels of soluble sugar, reducing sugar, and non-reducing sugar were decreased in plants grown under elevating Cr levels, but the accumulation of the metal in the roots and shoots of S. oleracea, was found to be increased, and the values of bioaccumulation factor were <1 in all the Cr treatments. The negative impacts of Cr injury were reduced by the application of SNP and NaHS (individually or combined), which increased plant growth and biomass, improved photosynthetic apparatus, antioxidant enzymes, and mineral uptake, as well as diminished the exudation of organic acids and oxidative stress indicators in roots of S. oleracea by decreasing Cr toxicity. Here, we conclude that the application of SNP and NaHS under the exposure to Cr stress significantly improved plant growth and biomass, photosynthetic pigments, and gas exchange characteristics; regulated antioxidant defense system and essential nutrient uptake; and balanced organic acid exudation pattern in S. oleracea.
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Affiliation(s)
- Jing Ma
- School of Public Administration, Hohai University, Nanjing, China
| | | | - Ghulam Yasin
- Institute of Botany, Bahauddin Zakariya University, Multan, Pakistan
| | - Sahar Mumtaz
- Division of Science and Technology, Department of Botany, University of Education, Lahore, Pakistan
| | - Freeha Fatima Qureshi
- Department of Botany, Government College University Faisalabad, Faisalabad, Pakistan
| | - Baber Ali
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sezai Ercisli
- Department of Horticulture Faculty of Agriculture Ataturk University, Erzurum, Turkey
| | - Sadeq K. Alhag
- Biology Department, College of Science and Arts, King Khalid University, Muhayil, Saudi Arabia
- Biology Department, College of Science, Ibb University, Ibb, Yemen
| | - Ahmed Ezzat Ahmed
- Department of Biology, College of Science, King Khalid University, Abha, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Dan C. Vodnar
- Institute of Life Sciences, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Iqbal Hussain
- Department of Botany, Government College University Faisalabad, Faisalabad, Pakistan
- *Correspondence: Iqbal Hussain
| | - Romina Alina Marc
- Food Engineering Department, Faculty of Food Science and Technology, University of Agricultural Science and Veterinary Medicine Cluj-Napoca, Cluj-Napoca, Romania
- Romina Alina Marc
| | - Fu Chen
- School of Public Administration, Hohai University, Nanjing, China
- Fu Chen
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Shafiq S, Akram NA, Ashraf M, AL-Harbi MS, Samra BN. Sugar beet extract rich in glycine betaine modulates oxidative defense system and key physiological characteristics of maize under water-deficit stress. PLoS One 2021; 16:e0254906. [PMID: 34843496 PMCID: PMC8629294 DOI: 10.1371/journal.pone.0254906] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 07/06/2021] [Indexed: 11/19/2022] Open
Abstract
Now-a-days, plant-based extracts, as a cheap source of growth activators, are being widely used to treat plants grown under extreme climatic conditions. So, a trial was conducted to assess the response of two maize (Zea mays L.) varieties, Sadaf (drought tolerant) and Sultan (drought sensitive) to foliar-applied sugar beet extract (SBE) under varying water-deficit conditions. Different SBE (control, 1%, 2%, 3% & 4%) levels were used in this study, and plants were exposed to water-deficit [(75% and 60% of field capacity (FC)] and control (100% FC) conditions. It was observed that root and shoot dry weights (growth), total soluble proteins, RWC-relative water contents, total phenolics, chlorophyll pigments and leaf area per plant decreased under different water stress regimes. While, proline, malondialdehyde (MDA), RMP-relative membrane permeability, H2O2-hydrogen peroxide and the activities of antioxidant enzymes [CAT-catalase, POD-peroxidase and SOD-superoxide dismutase] were found to be improved in water stress affected maize plants. Exogenous application of varying levels of SBE ameliorated the negative effects of water-deficit stress by enhancing the growth attributes, photosynthetic pigments, RWC, proline, glycinebetaine (GB), activities of POD and CAT enzymes and levels of total phenolics, whereas it reduced the lipid peroxidation in both maize varieties under varying water stress levels. It was noted that 3% and 4% levels of SBE were more effective than the other levels used in enhancing the growth as well as other characteristics of the maize varieties. Overall, the sugar beet extract proved to be beneficial for improving growth and metabolism of maize plants exposed to water stress.
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Affiliation(s)
- Sidra Shafiq
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Nudrat Aisha Akram
- Department of Botany, Government College University, Faisalabad, Pakistan
| | | | | | - Bassem N. Samra
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
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Rani P, Saini I, Singh N, Kaushik P, Wijaya L, Al-Barty A, Darwish H, Noureldeen A. Effect of potassium fertilizer on the growth, physiological parameters, and water status of Brassica juncea cultivars under different irrigation regimes. PLoS One 2021; 16:e0257023. [PMID: 34555032 PMCID: PMC8459943 DOI: 10.1371/journal.pone.0257023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 08/22/2021] [Indexed: 01/24/2023] Open
Abstract
Abiotic stress, especially a lack of water, can significantly reduce crop yields. In this study, we evaluated the physiological and biochemical effects of potassium sulfate (K2SO4) fertilizer and varied irrigation regimes on the economically significant oilseed crop, Brassica juncea L, under open field conditions. Two cultivars (RH-725 and RH-749) of B. juncea were used in a randomized complete block design experiment with three replicates. Irrigation regimes consisted of a control (double irrigation: once at the 50% flowering and another at 50% fruiting stages), early irrigation (at 50% flowering only), late irrigation (at 50% fruiting only) and stress (no irrigation). The K2SO4 applications were: control (K0, no fertilization); K1, 10 kg ha-1; and K2, 20 kg ha-1. We measured growth via fresh and dry plant weight, plant height, root length, and leaf area. All the growth parameters were higher in RH-749. The physiological attributes, including the membrane stability index and relative water content, were higher at the 50% flowering stage in RH-749. The amount of antioxidant enzymes (catalase (CAT), guaiacol peroxidase (POX), ascorbate peroxidase (APX), and superoxide dismutase (SOD)) was enhanced when both plants were fertilized during water stress. All of these enzymes had higher activity in RH-749. The total chlorophyll content and photosynthesis rate were considerably higher in RH-749, which leaked fewer electrolytes and maintained a less destructive osmotic potential under limited water conditions. The results indicated that it is water-stress tolerant when given a high concentration of K2SO4, which alleviated the adverse effects of water stress on growth and physiology.
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Affiliation(s)
- Preeti Rani
- Department of Botany, Kurukshetra University, Kurukshetra, Haryana, India
| | - Ishan Saini
- Department of Botany, Kurukshetra University, Kurukshetra, Haryana, India
| | - Narender Singh
- Department of Botany, Kurukshetra University, Kurukshetra, Haryana, India
| | - Prashant Kaushik
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, Valencia, Spain
| | - Leonard Wijaya
- Department of Biology, Institut Teknologi Sumatera, Jalan Terusan Ryacudu, Way Hui, Jati Agung, South Lampung, Indonesia
| | - Amal Al-Barty
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Hadeer Darwish
- Department of Biotechnology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Ahmed Noureldeen
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
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Zhu ZH, Sami A, Xu QQ, Wu LL, Zheng WY, Chen ZP, Jin XZ, Zhang H, Li Y, Yu Y, Zhou KJ. Effects of seed priming treatments on the germination and development of two rapeseed (Brassica napus L.) varieties under the co-influence of low temperature and drought. PLoS One 2021; 16:e0257236. [PMID: 34529689 PMCID: PMC8445418 DOI: 10.1371/journal.pone.0257236] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 08/26/2021] [Indexed: 11/18/2022] Open
Abstract
The present study was performed to evaluate the effects of seed priming. This was done by soaking the seeds of two rapeseed cultivars, namely, ZY15 (tolerant to low temperature and drought) and HY49 (sensitive to low temperature and drought), for 12 h in varying solutions: distilled water, 138 mg/L salicylic acid (SA), 300 mg/L gibberellic acid (GA), 89.4 mg/L sodium nitroprusside (SNP), 3000 mg/L calcium chloride (CaCl2), and 30 mg/L abscisic acid (ABA). Primed and non-primed seeds were left to germinate at 15°C and -0.15 MPa (T15W15) and at 25°C and 0 MPa (T25W0), respectively. The results showed that SA, GA, SNP, CaCl2, and ABA significantly improved the germination potential (GP), germination rate (GR), germination index (GI), stem fresh weight (SFW), stem dry weight (SDW), root length (RL), stem length (SL), and seed vigor index (SVI) under T15W15. For ZY15 seeds under T25W0, GA, SNP, CaCl2, and ABA priming reduced the average germination time (96% after 5 days) compared to that of the control (88% after 5 days). For ZY15 seeds under T15W15, SA, SNP, CaCl2, and ABA priming, with respect to the control and water-treated groups, shortened the average germination time (92% after 5 days) compared to that of the control (80% after 5 days). For HY49 seeds under T25W0, GA, SNP, CaCl2, and ABA priming reduced the average germination time (92% after 5 days) compared to that of the control (85% after 5 days). Similarly, for HY49 seeds under T15W15, GA priming shortened the average germination time (89% after 5 days) compared to that of the control (83% after 5 days). These priming agents increased the net photosynthesis, stomatal conductivity, and transpiration rate of rape seedlings under conditions of low temperature and drought stress, while also decreasing intercellular carbon dioxide (CO2) concentrations. Additionally, SA, GA, SNP, CaCl2, and ABA increased superoxide dismutase concentrations (SOD) and ascorbic peroxidase (APX) activities of rape seedlings under stress conditions, while decreasing catalase (CAT) and peroxidase (POD) activities in ZY15 seedlings. In HY49, which is sensitive to low temperature and drought, all priming solutions, except for SNP, led to an increase in SOD activity levels and a decrease in CAT activity levels. Overall, SA, GA, SNP, and CaCl2 increased the concentrations of indoleacetic acid (IAA), GA, ABA, and cytokinin (CTK) in seedlings under stress conditions. Moreover, compared to SA, CaCl2, and ABA, GA (300 mg/L) and SNP (300 mol/L) showed improved priming effects for ZY15 and HY49 under stress conditions.
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Affiliation(s)
- Zong He Zhu
- College of Agronomy, Anhui Agricultural University, Hefei, China
- * E-mail:
| | - Abdul Sami
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Qing Qing Xu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Ling Ling Wu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Wen Yin Zheng
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Zhi Peng Chen
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Xue Zhi Jin
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Hong Zhang
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Yong Li
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Yan Yu
- College of Agronomy, Anhui Agricultural University, Hefei, China
| | - Ke Jin Zhou
- College of Agronomy, Anhui Agricultural University, Hefei, China
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Wang J, Wang D, Zhu M, Li F. Exogenous 6-Benzyladenine Improves Waterlogging Tolerance in Maize Seedlings by Mitigating Oxidative Stress and Upregulating the Ascorbate-Glutathione Cycle. FRONTIERS IN PLANT SCIENCE 2021; 12:680376. [PMID: 34539688 PMCID: PMC8446516 DOI: 10.3389/fpls.2021.680376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 08/04/2021] [Indexed: 05/30/2023]
Abstract
The synthetic cytokinin 6-benzyladenine (6-BA) regulates plant growth and prevents the negative consequences of various forms of abiotic stress, including waterlogging in crop plants. The present study aimed to investigate the effects of exogenous 6-BA on the growth, oxidative stress, and ascorbate-glutathione (AsA-GSH) cycle system in the inbred SY-MY13 (waterlogging-resistant) and SY-XT1 (waterlogging-sensitive) seedlings of waxy corn in conditions of waterlogging stress. The results demonstrated that waterlogging stress causes chlorosis and necrosis in waxy corn leaves, inhibiting growth and leading to the accumulation of reactive oxygen species (ROS), which induces oxidative stress and, in turn, reduces membrane lipid peroxidation and the disruption of membrane homeostasis. This is specifically manifested in the increased concentrations of superoxide anion radicals ( O 2 - ), hydrogen peroxide (H2O2), and malondialdehyde (MDA), in addition to increased relative electrical conductivity (REC%) values. The SY-MY13 strain exhibited growth superior to that of SY-XT1 when waterlogged due to its excellent waterlogging resistance. Thus, exogenous 6-BA was found to be effective in enhancing the growth of plants stressed by waterlogging in terms of the weight of the shoots and roots, shoot height, and leaf area. In addition to this, exogenous 6-BA also reduced the accumulation of O 2 - , H2O2, and MDA, increased ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR), and monodehydroascorbate reductase (MDHAR) activity, and enhanced ascorbic acid (AsA), and reduced glutathione (GSH) concentration through the regulation of the efficiency of the AsA-GSH cycle system in maize plants. Hence, the application of exogenous 6-BA can alleviate waterlogging-induced damage and improve waterlogging tolerance in waxy corn via the activation of the AsA-GSH cycle system and the elimination of ROS.
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Affiliation(s)
- Ji Wang
- College of Agronomy, Specialty Corn Institute, Shenyang Agricultural University, Shenyang, China
| | - Daye Wang
- College of Agronomy, Specialty Corn Institute, Shenyang Agricultural University, Shenyang, China
| | - Min Zhu
- College of Agronomy, Specialty Corn Institute, Shenyang Agricultural University, Shenyang, China
| | - Fenghai Li
- College of Agronomy, Specialty Corn Institute, Shenyang Agricultural University, Shenyang, China
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Alamri S, Alsubaie QD, Al-Amri AA, Al-Munqedi B, Ali HM, Kushwaha BK, Singh VP, Siddiqui MH. Priming of tomato seedlings with 2-oxoglutarate induces arsenic toxicity alleviatory responses by involving endogenous nitric oxide. PHYSIOLOGIA PLANTARUM 2021; 173:45-57. [PMID: 32656764 DOI: 10.1111/ppl.13168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/04/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Metal toxicity in crop plants is a matter of scientific concern. Therefore, in recent years efforts have been made to minimize metal toxicity in crop plants. Out of various strategies, priming of seedlings with certain chemicals, like e.g. donors of signaling molecules, nutrients, metabolites or plant hormones has shown encouraging results. However, mechanisms related with the priming-induced mitigation of metal toxicity are still poorly known. Hence, we have tested the potential of 2-oxoglutarate (2-OG) priming in enhancing the arsenate (AsV ) toxicity tolerance in tomato seedlings along with deciphering the probable role of nitric oxide (NO) in accomplishing this task. Arsenate decreased growth, endogenous NO and nitric oxide synthase-like activity but enhanced the accumulation of As, which collectively led to root cell death. Arsenate toxicity also decreased some photosynthetic characteristics (i.e. Fv /Fm, qP, Fv /F0 and Fm /F0 , and total chlorophyll content) but enhanced NPQ. However, priming with 2-OG alleviated the toxic effect of AsV on growth, endogenous NO, cell death and photosynthesis. Moreover, arsenate inhibited the activities of enzymes of nitrogen metabolism (i.e. nitrate reductase, nitrite reductase, glutamine synthetase and glutamine 2-oxoglutarate aminotransferase) but increased the activity of glutamate dehydrogenase and NH4 + content. Superoxide radicals, hydrogen peroxide, lipid peroxidation, protein oxidation and membrane damage increased upon AsV exposure, but the antioxidant enzymes (i.e. superoxide dismutase, catalase and glutathione-S-transferase) showed differential responses. Overall, our results showed that 2-OG is capable of alleviating AsV toxicity in tomato seedlings but the involvement of endogenous NO is probably required.
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Affiliation(s)
- Saud Alamri
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Qasi D Alsubaie
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdullah A Al-Amri
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Bandar Al-Munqedi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Hayssam M Ali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Bishwajit K Kushwaha
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj, 211002, India
| | - Vijay P Singh
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj, 211002, India
| | - Manzer H Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
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da Silva Cunha LF, de Oliveira VP, do Nascimento AWS, da Silva BRS, Batista BL, Alsahli AA, Lobato AKDS. Leaf application of 24-epibrassinolide mitigates cadmium toxicity in young Eucalyptus urophylla plants by modulating leaf anatomy and gas exchange. PHYSIOLOGIA PLANTARUM 2021; 173:67-87. [PMID: 32767360 DOI: 10.1111/ppl.13182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/25/2020] [Accepted: 08/04/2020] [Indexed: 05/08/2023]
Abstract
Cadmium (Cd2+) soil pollution is a global environmental problem caused by the high toxicity of Cd. 24-Epibrassinolide (EBR) is a biodegradable plant steroid involved in response modulation to biotic and abiotic stresses. The aim of this study was to evaluate if the leaf-application of EBR improves the gas exchange and possible repercussions on leaf anatomy in young Eucalyptus urophylla plants exposed to Cd toxicity. The experiment involved six treatments, which included three Cd concentrations (0, 450, and 900 μM) and two EBR concentrations (0 and 100 nM, described as - EBR and + EBR, respectively). Plants exposed to Cd toxicity suffered decreases in leaf anatomical and gas exchange parameters. However, the plants treated with EBR + 900 μM Cd showed an increase of 46%, 40%, and 54% in the net photosynthetic rate, water-use efficiency, and instantaneous carboxylation efficiency, respectively. The EBR application-induced improvements in gas exchange parameters, causing beneficial effects on the photosynthetic apparatus, mainly the effective quantum yield of photosystem II (PSII) photochemistry and electron transport rate. Furthermore, this steroid mitigated the effect of Cd toxicity on leaf anatomical variables, more specifically palisade and spongy parenchyma, which are intrinsically related to stomatal density, and stimulated the net photosynthetic rate of plants.
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Affiliation(s)
- Luiz Felipe da Silva Cunha
- Núcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia. Paragominas, Pará, Brazil
| | - Victor Pereira de Oliveira
- Núcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia. Paragominas, Pará, Brazil
| | | | | | - Bruno Lemos Batista
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, São Paulo, Brazil
| | - Abdulaziz Abdullah Alsahli
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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Significance of brassinosteroids and their derivatives in the development and protection of plants under abiotic stress. Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00853-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Liu L, Xiang Y, Yan J, Di P, Li J, Sun X, Han G, Ni L, Jiang M, Yuan J, Zhang A. BRASSINOSTEROID-SIGNALING KINASE 1 phosphorylating CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE functions in drought tolerance in maize. THE NEW PHYTOLOGIST 2021; 231:695-712. [PMID: 33864702 DOI: 10.1111/nph.17403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/06/2021] [Indexed: 05/08/2023]
Abstract
Drought stress seriously limits crop productivity. Although studies have been carried out, it is still largely unknown how plants respond to drought stress. Here we find that drought treatment can enhance the phosphorylation activity of brassinosteroid-signaling kinase 1 (ZmBSK1) in maize (Zea mays). Our genetic studies reveal that ZmBSK1 positively affects drought tolerance in maize plants. ZmBSK1 localizes in plasma membrane, interacts with calcium/calmodulin (Ca2+ /CaM)-dependent protein kinase (ZmCCaMK), and phosphorylates ZmCCaMK. Ser-67 is a crucial phosphorylation site of ZmCCaMK by ZmBSK1. Drought stress enhances not only the interaction between ZmBSK1 and ZmCCaMK but also the phosphorylation of Ser-67 in ZmCCaMK by ZmBSK1. Furthermore, Ser-67 phosphorylation in ZmCCaMK regulates its Ca2+ /CaM binding, autophosphorylation and transphosphorylation activity, and positively affects its function in drought tolerance in maize. Our results reveal an important role for ZmBSK1 in drought tolerance and suggest a direct regulatory mode of ZmBSK1 phosphorylating ZmCCaMK.
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Affiliation(s)
- Lei Liu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yang Xiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jingwei Yan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Pengcheng Di
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jing Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiujuan Sun
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Gaoqiang Han
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lan Ni
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mingyi Jiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jianhua Yuan
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Aying Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
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Mathur P, Roy S. Insights into the plant responses to drought and decoding the potential of root associated microbiome for inducing drought tolerance. PHYSIOLOGIA PLANTARUM 2021; 172:1016-1029. [PMID: 33491182 DOI: 10.1111/ppl.13338] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 01/12/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
Global increase in water scarcity is a serious problem for sustaining crop productivity. The lack of water causes the degeneration of the photosynthetic apparatus, an imbalance in key metabolic pathways, an increase in free radical generation as well as weakens the root architecture of plants. Drought is one of the major stresses that directly interferes with the osmotic status of plant cells. Abscisic acid (ABA) is known to be a key player in the modulation of drought responses in plants and involvement of both ABA-dependent and ABA-independent pathways have been observed during drought. Concomitantly, other phytohormones such as auxins, ethylene, gibberellins, cytokinins, jasmonic acid also confer drought tolerance and a crosstalk between different phytohormones and transcription factors at the molecular level exists. A number of drought-responsive genes and transcription factors have been utilized for producing transgenic plants for improved drought tolerance. Despite relentless efforts, biotechnological advances have failed to design completely stress tolerant plants until now. The root microbiome is the hidden treasure that possesses immense potential to revolutionize the strategies for inducing drought resistance in plants. Root microbiota consist of plant growth-promoting rhizobacteria, endophytes and mycorrhizas that form a consortium with the roots. Rhizospheric microbes are proliferous producers of phytohormones, mainly auxins, cytokinin, and ethylene as well as enzymes like the 1-aminocyclopropane-1-carboxylate deaminase (ACC deaminase) and metabolites like exopolysaccharides that help to induce systemic tolerance against drought. This review, therefore focuses on the major mechanisms of plant-microbe interactions under drought-stressed conditions and emphasizes the importance of drought-tolerant microbes for sustaining and improving the productivity of crop plants under stress.
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Affiliation(s)
- Piyush Mathur
- Microbiology Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur, India
| | - Swarnendu Roy
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur, India
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Jha RK, Patel J, Patel MK, Mishra A, Jha B. Introgression of a novel cold and drought regulatory-protein encoding CORA-like gene, SbCDR, induced osmotic tolerance in transgenic tobacco. PHYSIOLOGIA PLANTARUM 2021; 172:1170-1188. [PMID: 33206416 DOI: 10.1111/ppl.13280] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/05/2020] [Accepted: 11/17/2020] [Indexed: 05/11/2023]
Abstract
A potent cold and drought regulatory-protein encoding gene, SbCDR was cloned from an extreme halophyte Salicornia brachiata. In vitro localisation study, performed with SbCDR::RFP gene-construct revealed that SbCDR is a membrane protein. Overexpression of the SbCDR gene in tobacco plants confirmed tolerance against major environmental constraints such as salinity, drought and cold, as evidenced by improved chlorophyll contents, plant morphology, plant biomass, root length, shoot length and seed germination efficiency. Transgenic lines also exhibited high accumulation of proline, total sugar, reducing sugar, free amino acid and polyphenol, besides the low level of malondialdehyde (MDA) contents. SbCDR transgenic lines showed better relative water contents, membrane stability index and osmotic water potential. Furthermore, higher expression of ROS scavenging genes was observed in transgenic lines under stress. Moreover, microarray analysis revealed that several host genes were upregulated and downregulated under drought and salt stress conditions in SbCDR transgenic line compared with control (WT) plants. The results demonstrated that the overexpression of the halophytic SbCDR gene has intense effects on the abiotic stress tolerance of transgenic tobacco plants. However, the exact mode of action of SbCDR in multiple abiotic stress tolerance of plants is yet to be unveiled. It is believed that the precise role of SbCDR gene will provide additional information to comprehend the abiotic stress tolerance mechanism. Furthermore, it will appear as a promising candidate gene for improving stress tolerance in different crop plants for sustainable agriculture and crop productivity.
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Affiliation(s)
- Rajesh Kumar Jha
- Division of Applied Phycology and Biotechnology, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar (Gujarat), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Jaykumar Patel
- Division of Applied Phycology and Biotechnology, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar (Gujarat), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Manish Kumar Patel
- Division of Applied Phycology and Biotechnology, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar (Gujarat), India
| | - Avinash Mishra
- Division of Applied Phycology and Biotechnology, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar (Gujarat), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Bhavanath Jha
- Division of Applied Phycology and Biotechnology, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar (Gujarat), India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Kaya C. Nitrate reductase is required for salicylic acid-induced water stress tolerance of pepper by upraising the AsA-GSH pathway and glyoxalase system. PHYSIOLOGIA PLANTARUM 2021; 172:351-370. [PMID: 32542778 DOI: 10.1111/ppl.13153] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/18/2020] [Accepted: 06/11/2020] [Indexed: 05/07/2023]
Abstract
A trial was conducted to evaluate whether nitrate reductase (NR) participates in salicylic acid (SA)-improved water stress (WS) tolerance in pepper (Capsicum annuum L.) plants. Before starting WS treatment, 0.5 mM SA was applied to half of the well-watered (WW) plants as well as to WS-plants as a foliar spray once a day for a week. The soil water holding capacity was maintained at 40 and 80% of the full water storing capacity for WS and and well-watered (WW) plants, respectively. Water stress caused substantial decreases in total plant dry weight, Fv /Fm , chlorophyll a and b, relative water content, leaf water potential (ΨI) by 53, 37, 49, 21, 36 and 33%, respectively relative to control, but significant increases in malondialdehyde (MDA), hydrogen peroxide (H2 O2 ), electrolyte leakage (EL), methylglyoxal (MG), proline, key antioxidant enzymes' activities, NO and NR activity. The SA reduced oxidative stress, but improved antioxidant defence system, ascorbate-glutathione (AsA-GSH) cycle enzymes, glyoxalase system-related enzymes, glyoxalase I (Gly I) and glyoxalase II (Gly II), plant growth, photosynthetic traits, NO, NR and proline. SA-induced WS tolerance was further improved by supplementation of sodium nitroprusside (SNP), a donor of NO. NR inhibitor, sodium tungstate (ST) was applied in conjunction with SA and SA + SNP to the WW and WS-plants to assess whether NR contributes to SA-improved WS tolerance. ST abolished the beneficial effects of SA by reducing NO and NR activity in WS-pepper, but the application of SNP along with SA + ST reversed negative effects of ST, showing that NO and NR are jointly needed for SA-induced WS tolerance of pepper plants.
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Affiliation(s)
- Cengiz Kaya
- Soil Science and Plant Nutrition Department, Agriculture Faculty, Harran University, Sanliurfa, Turkey
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Ozturk M, Turkyilmaz Unal B, García-Caparrós P, Khursheed A, Gul A, Hasanuzzaman M. Osmoregulation and its actions during the drought stress in plants. PHYSIOLOGIA PLANTARUM 2021; 172:1321-1335. [PMID: 33280137 DOI: 10.1111/ppl.13297] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/07/2020] [Accepted: 12/01/2020] [Indexed: 05/27/2023]
Abstract
Drought stress, which causes a decline in quality and quantity of crop yields, has become more accentuated these days due to climatic change. Serious measures need to be taken to increase the tolerance of crop plants to acute drought conditions likely to occur due to global warming. Drought stress causes many physiological and biochemical changes in plants, rendering the maintenance of osmotic adjustment highly crucial. The degree of plant resistance to drought varies with plant species and cultivars, phenological stages of the plant, and the duration of plant exposure to the stress. Osmoregulation in plants under low water potential relies on synthesis and accumulation of osmoprotectants or osmolytes such as soluble proteins, sugars, and sugar alcohols, quaternary ammonium compounds, and amino acids, like proline. This review highlights the role of osmolytes in water-stressed plants and of enzymes entailed in their metabolism. It will be useful, especially for researchers working on the development of drought-resistant crops by using the metabolic-engineering techniques.
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Affiliation(s)
- Munir Ozturk
- Botany Department, Centre for Environmental Studies, Ege University, Izmir, Turkey
| | - Bengu Turkyilmaz Unal
- Department of Biotechnology, Faculty of Science and Arts, Nigde Omer Halisdemir University, Nigde, Turkey
| | - Pedro García-Caparrós
- Agronomy Department of Superior School Engineering, University of Almería, Agrifood Campus of International Excellence, Almería, Spain
| | - Anum Khursheed
- Department of Biochemistry, Quaid-I-Azam University, Islamabad, Pakistan
| | - Alvina Gul
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
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Mubarik MS, Khan SH, Sajjad M, Raza A, Hafeez MB, Yasmeen T, Rizwan M, Ali S, Arif MS. A manipulative interplay between positive and negative regulators of phytohormones: A way forward for improving drought tolerance in plants. PHYSIOLOGIA PLANTARUM 2021; 172:1269-1290. [PMID: 33421147 DOI: 10.1111/ppl.13325] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/20/2020] [Accepted: 12/23/2020] [Indexed: 05/28/2023]
Abstract
Among different abiotic stresses, drought stress is the leading cause of impaired plant growth and low productivity worldwide. It is therefore essential to understand the process of drought tolerance in plants and thus to enhance drought resistance. Accumulating evidence indicates that phytohormones are essential signaling molecules that regulate diverse processes of plant growth and development under drought stress. Plants can often respond to drought stress through a cascade of phytohormones signaling as a means of plant growth regulation. Understanding biosynthesis pathways and regulatory crosstalk involved in these vital compounds could pave the way for improving plant drought tolerance while maintaining overall plant health. In recent years, the identification of phytohormones related key regulatory genes and their manipulation through state-of-the-art genome engineering tools have helped to improve drought tolerance plants. To date, several genes linked to phytohormones signaling networks, biosynthesis, and metabolism have been described as a promising contender for engineering drought tolerance. Recent advances in functional genomics have shown that enhanced expression of positive regulators involved in hormone biosynthesis could better equip plants against drought stress. Similarly, knocking down negative regulators of phytohormone biosynthesis can also be very effective to negate the negative effects of drought on plants. This review explained how manipulating positive and negative regulators of phytohormone signaling could be improvised to develop future crop varieties exhibiting higher drought tolerance. In addition, we also discuss the role of a promising genome editing tool, CRISPR/Cas9, on phytohormone mediated plant growth regulation for tackling drought stress.
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Affiliation(s)
- Muhammad Salman Mubarik
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad, Pakistan
- Center for Advanced Studies in Agriculture and Food Security (CAS-AFS), University of Agriculture, Faisalabad, Pakistan
| | - Sultan Habibullah Khan
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad, Pakistan
- Center for Advanced Studies in Agriculture and Food Security (CAS-AFS), University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Sajjad
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad, Pakistan
| | - Ali Raza
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | | | - Tahira Yasmeen
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Saleem Arif
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad, Pakistan
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Jogawat A, Yadav B, Lakra N, Singh AK, Narayan OP. Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review. PHYSIOLOGIA PLANTARUM 2021; 172:1106-1132. [PMID: 33421146 DOI: 10.1111/ppl.13328] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/08/2020] [Accepted: 01/01/2021] [Indexed: 05/21/2023]
Abstract
Drought stress negatively affects crop performance and weakens global food security. It triggers the activation of downstream pathways, mainly through phytohormones homeostasis and their signaling networks, which further initiate the biosynthesis of secondary metabolites (SMs). Roots sense drought stress, the signal travels to the above-ground tissues to induce systemic phytohormones signaling. The systemic signals further trigger the biosynthesis of SMs and stomatal closure to prevent water loss. SMs primarily scavenge reactive oxygen species (ROS) to protect plants from lipid peroxidation and also perform additional defense-related functions. Moreover, drought-induced volatile SMs can alert the plant tissues to perform drought stress mitigating functions in plants. Other phytohormone-induced stress responses include cell wall and cuticle thickening, root and leaf morphology alteration, and anatomical changes of roots, stems, and leaves, which in turn minimize the oxidative stress, water loss, and other adverse effects of drought. Exogenous applications of phytohormones and genetic engineering of phytohormones signaling and biosynthesis pathways mitigate the drought stress effects. Direct modulation of the SMs biosynthetic pathway genes or indirect via phytohormones' regulation provides drought tolerance. Thus, phytohormones and SMs play key roles in plant development under the drought stress environment in crop plants.
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Affiliation(s)
| | - Bindu Yadav
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Nita Lakra
- Department of Biotechnology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
| | - Amit Kumar Singh
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Om Prakash Narayan
- Biomedical Engineering Department, Tufts University, Medford, Massachusetts, USA
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Zhang J, Zhang Y, Khan R, Wu X, Zhou L, Xu N, Du S, Ma X. Exogenous application of brassinosteroids regulates tobacco leaf size and expansion via modulation of endogenous hormones content and gene expression. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:847-860. [PMID: 33967467 PMCID: PMC8055801 DOI: 10.1007/s12298-021-00971-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/09/2021] [Accepted: 03/07/2021] [Indexed: 05/04/2023]
Abstract
UNLABELLED Brassinosteroids (BR) play diverse roles in the regulation of plant growth and development. BR promotes plant growth by triggering cell division and expansion. However, the effect of exogenous BR application on the leaf size and expansion of tobacco is unknown. Tobacco seedlings are treated with different concentrations of exogenous 2,4-epibrassinolide (EBL) [control (CK, 0 mol L-1), T1 (0.5 × 10-7 mol L-1), and T2 (0.5 × 10-4 mol L-1)]. The results show that T1 has 17.29% and T2 has 25.99% more leaf area than control. The epidermal cell area is increased by 24.40% and 17.13% while the number of epidermal cells is 7.06% and 21.06% higher in T1 and T2, respectively, relative to control. So the exogenous EBL application improves the leaf area by increasing cell numbers and cell area. The endogenous BR (7.5 times and 68.4 times), auxin (IAA) (4.03% and 25.29%), and gibberellin (GA3) contents (84.42% and 91.76%) are higher in T1 and T2, respectively, in comparison with control. Additionally, NtBRI1, NtBIN2, and NtBES1 are upregulated showing that the brassinosteroid signaling pathway is activated. Furthermore, the expression of the key biosynthesis-related genes of BR (NtDWF4), IAA (NtYUCCA6), and GA3 (NtGA3ox-2) are all upregulated under EBL application. Finally, the exogenous EBL application also upregulated the expression of cell growth-related genes (NtCYCD3;1, NtARGOS, NtGRF5, NtGRF8, and NtXTH). The results reveal that the EBL application increases the leaf size and expansion by promoting the cell expansion and division through higher BR, IAA, and GA3 contents along with the upregulation of cell growth-related genes. The results of the study provide a scientific basis for the effect of EBL on tobacco leaf growth at morphological, anatomical, biochemical, and molecular levels. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-00971-x.
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Affiliation(s)
- Juan Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yan Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Rayyan Khan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
| | - Xiaoying Wu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Lei Zhou
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Na Xu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
| | - Shasha Du
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
| | - Xinghua Ma
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, 266101 China
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Sun C, Zhang Y, Liu L, Liu X, Li B, Jin C, Lin X. Molecular functions of nitric oxide and its potential applications in horticultural crops. HORTICULTURE RESEARCH 2021; 8:71. [PMID: 33790257 PMCID: PMC8012625 DOI: 10.1038/s41438-021-00500-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 01/04/2021] [Accepted: 01/11/2021] [Indexed: 05/04/2023]
Abstract
Nitric oxide (NO) regulates plant growth, enhances nutrient uptake, and activates disease and stress tolerance mechanisms in most plants, making NO a potential tool for use in improving the yield and quality of horticultural crop species. Although the use of NO in horticulture is still in its infancy, research on NO in model plant species has provided an abundance of valuable information on horticultural crop species. Emerging evidence implies that the bioactivity of NO can occur through many potential mechanisms but occurs mainly through S-nitrosation, the covalent and reversible attachment of NO to cysteine thiol. In this context, NO signaling specifically affects crop development, immunity, and environmental interactions. Moreover, NO can act as a fumigant against a wide range of postharvest diseases and pests. However, for effective use of NO in horticulture, both understanding and exploring the biological significance and potential mechanisms of NO in horticultural crop species are critical. This review provides a picture of our current understanding of how NO is synthesized and transduced in plants, and particular attention is given to the significance of NO in breaking seed dormancy, balancing root growth and development, enhancing nutrient acquisition, mediating stress responses, and guaranteeing food safety for horticultural production.
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Affiliation(s)
- Chengliang Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Yuxue Zhang
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Lijuan Liu
- Interdisciplinary Research Academy, Zhejiang Shuren University, 310015, Hangzhou, China
| | - Xiaoxia Liu
- Zhejiang Provincial Cultivated Land Quality and Fertilizer Administration Station, Hangzhou, China
| | - Baohai Li
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Chongwei Jin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Xianyong Lin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, 310058, Hangzhou, China.
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Xue J, Guo C, Shen Y, Li M, Chu J, Yao X. Brassinolide soaking and preharvest UV-B radiation influence the shelf life of small black bean sprouts. Food Chem 2021; 352:129322. [PMID: 33690073 DOI: 10.1016/j.foodchem.2021.129322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 01/06/2021] [Accepted: 02/05/2021] [Indexed: 12/17/2022]
Abstract
This study explored the effects of brassinolide (BR) soaking, preharvest ultraviolet-B (UV-B) radiation, and their combined treatments on physiological characteristics, chlorophyll fluorescence, and quality of small black bean sprouts during storage. Results indicated that the combined treatments significantly enhanced contents of flavone, free amino acid, and photosynthetic pigment, and activities of phenylalanine ammonia lyase (PAL) and 2-diphenyl-1-picrylhydrazyl(DPPH) radical scavenging in sprouts stored for 5 days compared with BR treatment alone. The combined treatments significantly increased total phenols content and PAL activity, and reduced malonaldehyde content in sprouts compared with UV-B radiation alone. The inhibitory effect of BR or UV-B on fluorescence of photosystem II was weakened by their combined treatments. Comprehensive analysis indicated that the combined treatments could be used to maintain postharvest small black bean sprouts with high levels of nutritional ingredients by probably keeping high photosynthetic capacity, PAL activity, and DPPH radical scavenging rate in sprouts.
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Affiliation(s)
- Jingjing Xue
- College of Life Sciences, Hebei University, Baoding 071002, China
| | - Chenchen Guo
- College of Life Sciences, Hebei University, Baoding 071002, China
| | - Yuxiao Shen
- College of Life Sciences, Hebei University, Baoding 071002, China
| | - Minghui Li
- College of Life Sciences, Hebei University, Baoding 071002, China
| | - Jianzhou Chu
- College of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Xiaoqin Yao
- College of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
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Wei L, Zhang M, Wei S, Zhang J, Wang C, Liao W. Roles of nitric oxide in heavy metal stress in plants: Cross-talk with phytohormones and protein S-nitrosylation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113943. [PMID: 32023797 DOI: 10.1016/j.envpol.2020.113943] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 12/31/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Heavy metal (HM) stress is a major hazard, which significantly affects plant growth and development. In order to confront HM stress, plants directly or indirectly regulate the levels of endogenous nitric oxide (NO), a redox-related signaling molecule involved in wide range of plant growth and development as well as in response to HM stress. In addition, there is now compelling experimental evidence that NO usually mediates signaling processes through interactions with different biomolecules like phytohormones to regulate HM tolerance. Apart from phytohormones, NO partly operates through posttranslational modification of proteins, notably via S-nitrosylation in response to HM stress. Recently, the roles of S-nitrosylation as a regulator of plant responses to HM stress and S-nitrosylated candidates have also been established and detected. Here, we describe the roles of NO in confronting HM phytotoxicity in plants with a particular focus on the presentation and discussion of recent data obtained in this field, which involves in the function of various phytohormones and S-nitrosylation during plant responses to HM stress. Additionally, both importance and challenges of future work are outlined in order to further elucidate the specific mechanisms underlying the roles of NO in plant responses to HM stress.
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Affiliation(s)
- Lijuan Wei
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, PR China
| | - Meiling Zhang
- College of Science, Gansu Agricultural University, PR China
| | - Shouhui Wei
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, PR China
| | - Jing Zhang
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, PR China
| | - Chunlei Wang
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, PR China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, PR China.
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