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Asghar MA, Kulman K, Szalai G, Gondor OK, Mednyánszky Z, Simon-Sarkadi L, Gaudinova A, Dobrev PI, Vanková R, Kocsy G. Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post-germination growth in wheat. PHYSIOLOGIA PLANTARUM 2023; 175:e13887. [PMID: 36894826 DOI: 10.1111/ppl.13887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
The modulation of hormone and metabolite levels by ascorbate (ASA) and hydrogen peroxide (H2 O2 ) was compared during post-germination growth in shoots of wheat. Treatment with ASA resulted in a greater reduction of growth than the addition of H2 O2 . ASA also had a larger effect on the redox state of the shoot tissues as shown by the higher ASA and glutathione (GSH) levels, lower glutathione disulfide (GSSG) content and GSSG/GSH ratio compared to the H2 O2 treatment. Apart from common responses (i.e., increase of cis-zeatin and its O-glucosides), the contents of several compounds related to cytokinin (CK) and abscisic acid (ABA) metabolism were greater after ASA application. These differences in the redox state and hormone metabolism following the two treatments may be responsible for their distinct influence on various metabolic pathways. Namely, the glycolysis and citrate cycle were inhibited by ASA and they were not affected by H2 O2 , while the amino acid metabolism was induced by ASA and repressed by H2 O2 based on the changes in the level of the related carbohydrates, organic and amino acids. The first two pathways produce reducing power, while the last one needs it; therefore ASA, as a reductant may suppress and induce them, respectively. H2 O2 as an oxidant had different effect, namely it did not alter glycolysis and citrate cycle, and inhibited the formation of amino acids.
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Affiliation(s)
- Muhammad Ahsan Asghar
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2 Brunszvik St., Martonvásár, 2462, Hungary
| | - Kitti Kulman
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2 Brunszvik St., Martonvásár, 2462, Hungary
| | - Gabriella Szalai
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2 Brunszvik St., Martonvásár, 2462, Hungary
| | - Orsolya Kinga Gondor
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2 Brunszvik St., Martonvásár, 2462, Hungary
| | - Zsuzsa Mednyánszky
- Department of Nutrition, Hungarian University of Agriculture and Life Sciences, Budapest, Hungary
| | - Livia Simon-Sarkadi
- Department of Nutrition, Hungarian University of Agriculture and Life Sciences, Budapest, Hungary
| | - Alena Gaudinova
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague 6, 165 02, Czech Republic
| | - Petre I Dobrev
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague 6, 165 02, Czech Republic
| | - Radomíra Vanková
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague 6, 165 02, Czech Republic
| | - Gábor Kocsy
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2 Brunszvik St., Martonvásár, 2462, Hungary
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Zhao YQ, Hu KD, Yao GF, Wang SY, Peng XJ, Zhang H. A D-cysteine desulfhydrase, SlDCD2, participates in tomato fruit ripening by modulating ROS homoeostasis and ethylene biosynthesis. HORTICULTURE RESEARCH 2023; 10:uhad014. [PMID: 36968183 PMCID: PMC10031741 DOI: 10.1093/hr/uhad014] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Hydrogen sulfide (H2S) is involved in multiple processes during plant growth and development. D-cysteine desulfhydrase (DCD) can produce H2S with D-cysteine as the substrate; however, the potential developmental roles of DCD have not been explored during the tomato lifecycle. In the present study, SlDCD2 showed increasing expression during fruit ripening. Compared with the control fruits, the silencing of SlDCD2 by pTRV2-SlDCD2 accelerated fruit ripening. A SlDCD2 gene-edited mutant was constructed by CRISPR/Cas9 transformation, and the mutant exhibited accelerated fruit ripening, decreased H2S release, higher total cysteine and ethylene contents, enhanced chlorophyll degradation and increased carotenoid accumulation. Additionally, the expression of multiple ripening-related genes, including NYC1, PAO, SGR1, PDS, PSY1, ACO1, ACS2, E4, CEL2, and EXP was enhanced during the dcd2 mutant tomato fruit ripening. Compared with the wild-type fruits, SlDCD2 mutation induced H2O2 and malondialdehyde (MDA) accumulation in fruits, which led to an imbalance in reactive oxygen species (ROS) metabolism. A correlation analysis indicated that H2O2 content was strongly positively correlated with carotenoids content, ethylene content and ripening-related gene expression and negatively correlated with the chlorophyll content. Additionally, the dcd2 mutant showed earlier leaf senescence, which may be due to disturbed ROS homeostasis. In short, our findings show that SlDCD2 is involved in H2S generation and that the reduction in endogenous H2S production in the dcd2 mutant causes accelerated fruit ripening and premature leaf senescence. Additionally, decreased H2S in the dcd2 mutant causes excessive H2O2 accumulation and increased ethylene release, suggesting a role of H2S and SlDCD2 in modulating ROS homeostasis and ethylene biosynthesis.
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Affiliation(s)
| | | | - Gai-Fang Yao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Si-Yue Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xiang-Jun Peng
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
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Yongliang B, Meiguo X, Roumin L, Weijun H, Shuyan H, Rong Z, Yiping G. Metabolomics and water migration analysis provides valuable insights into nutrient generation in Tartary buckwheat ( Fagopyrum tataricum) seed germination. FOOD AGR IMMUNOL 2022. [DOI: 10.1080/09540105.2022.2117797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Bai Yongliang
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
- Key laboratory of Guangdong Food Intelligent Manufactory, Foshan University, Foshan, People’s Republic of China
| | - Xin Meiguo
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
- Key laboratory of Guangdong Food Intelligent Manufactory, Foshan University, Foshan, People’s Republic of China
| | - Lin Roumin
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
| | - He Weijun
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
| | - He Shuyan
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
| | - Zeng Rong
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
| | - Guo Yiping
- College of Food Science and Technology, Foshan University, Foshan, People’s Republic of China
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Yao X, Zhou M, Ruan J, Peng Y, Ma C, Wu W, Gao A, Weng W, Cheng J. Physiological and Biochemical Regulation Mechanism of Exogenous Hydrogen Peroxide in Alleviating NaCl Stress Toxicity in Tartary Buckwheat (Fagopyrum tataricum (L.) Gaertn). Int J Mol Sci 2022; 23:ijms231810698. [PMID: 36142630 PMCID: PMC9505081 DOI: 10.3390/ijms231810698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
We aimed to elucidate the physiological and biochemical mechanism by which exogenous hydrogen peroxide (H2O2) alleviates salt stress toxicity in Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn). Tartary buckwheat “Chuanqiao-2” under 150 mmol·L−1 salt (NaCl) stress was treated with 5 or 10 mmol·L−1 H2O2, and seedling growth, physiology and biochemistry, and related gene expression were studied. Treatment with 5 mmol·L−1 H2O2 significantly increased plant height (PH), fresh and dry weights of shoots (SFWs/SDWs) and roots (RFWs/RDWs), leaf length (LL) and area (LA), and relative water content (LRWC); increased chlorophyll a (Chl a) and b (Chl b) contents; improved fluorescence parameters; enhanced antioxidant enzyme activity and content; and reduced malondialdehyde (MDA) content. Expressions of all stress-related and enzyme-related genes were up-regulated. The F3′H gene (flavonoid synthesis pathway) exhibited similar up-regulation under 10 mmol·L−1 H2O2 treatment. Correlation and principal component analyses showed that 5 mmol·L−1 H2O2 could significantly alleviate the toxic effect of salt stress on Tartary buckwheat. Our results show that exogenous 5 mmol·L−1 H2O2 can alleviate the inhibitory or toxic effects of 150 mmol·L−1 NaCl stress on Tartary buckwheat by promoting growth, enhancing photosynthesis, improving enzymatic reactions, reducing membrane lipid peroxidation, and inducing the expression of related genes.
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Affiliation(s)
- Xin Yao
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Meiliang Zhou
- Institute of Crop Science, Chinese Academy of Agriculture Science, Beijing 100081, China
| | - Jingjun Ruan
- College of Agronomy, Guizhou University, Guiyang 550025, China
- Correspondence: (J.R.); (J.C.)
| | - Yan Peng
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Chao Ma
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Weijiao Wu
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Anjing Gao
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Wenfeng Weng
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Jianping Cheng
- College of Agronomy, Guizhou University, Guiyang 550025, China
- Correspondence: (J.R.); (J.C.)
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