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Song C, Manzoor MA, Ren Y, Guo J, Zhang P, Zhang Y. Exogenous melatonin alleviates sodium chloride stress and increases vegetative growth in Lonicera japonica seedlings via gene regulation. BMC PLANT BIOLOGY 2024; 24:790. [PMID: 39164652 PMCID: PMC11337751 DOI: 10.1186/s12870-024-05506-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 08/12/2024] [Indexed: 08/22/2024]
Abstract
Melatonin (Mt) functions as a growth regulator and multifunctional signaling molecule in plants, thereby playing a crucial role in promoting growth and orchestrating protective responses to various abiotic stresses. However, the mechanism whereby exogenous Mt protects Lonicera japonica Thunb. (L. japonica) against salt stress has not been fully elucidated. Therefore, this study aimed to elucidate how exogenous Mt alleviates sodium chloride (NaCl) stress in L. japonica seedlings. Salt-sensitive L. japonica seedlings were treated with an aqueous solution containing 150 mM of NaCl and aqueous solutions containing various concentrations of Mt. The results revealed that treatment of NaCl-stressed L. japonica seedlings with a 60 µM aqueous solution of Mt significantly enhanced vegetative plant growth by scavenging reactive oxygen species and thus reducing oxidative stress. The latter was evidenced by decreases in electrical conductivity and malondialdehyde (MDA) concentrations. Moreover, Mt treatment led to increases in the NaCl-stressed L. japonica seedlings' total chlorophyll content, soluble sugar content, and flavonoid content, demonstrating that Mt treatment improved the seedlings' tolerance of NaCl stress. This was also indicated by the NaCl-stressed L. japonica seedlings exhibiting marked increases in the activities of antioxidant enzymes (superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase) and in photosynthetic functions. Furthermore, Mt treatment of NaCl-stressed L. japonica seedlings increased their expression of phenylalanine ammonia-lyase 1 (PAL1), phenylalanine ammonia-lyase 2 (PAL2), calcium-dependent protein kinase (CPK), cinnamyl alcohol dehydrogenase (CAD), flavanol synthase (FLS), and chalcone synthase (CHS). In conclusion, our results demonstrate that treatment of L. japonica seedlings with a 60 µM aqueous solution of Mt significantly ameliorated the detrimental effects of NaCl stress in the seedlings. Therefore, such treatment has substantial potential for use in safeguarding medicinal plant crops against severe salinity.
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Affiliation(s)
- Cheng Song
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu'an, 237012, China
| | - Muhammad Aamir Manzoor
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 201109, China
| | - Yanshuang Ren
- The First Affiliated Hospital, College of Clinical Medicine of Henan, University of Science and Technology, Luoyang, 471003, China
| | - Jingjing Guo
- The First Affiliated Hospital, College of Clinical Medicine of Henan, University of Science and Technology, Luoyang, 471003, China
| | - Pengfei Zhang
- Henan Denuoanke Occupational Health Evaluation Co., Ltd, Anyang, 473000, China
| | - Yingyu Zhang
- The First Affiliated Hospital, College of Clinical Medicine of Henan, University of Science and Technology, Luoyang, 471003, China.
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2
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Wang J, Yan D, Liu R, Wang T, Lian Y, Lu Z, Hong Y, Wang Y, Li R. The Physiological and Molecular Mechanisms of Exogenous Melatonin Promote the Seed Germination of Maize ( Zea mays L.) under Salt Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:2142. [PMID: 39124260 PMCID: PMC11313997 DOI: 10.3390/plants13152142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/22/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Salt stress caused by high concentrations of Na+ and Cl- in soil is one of the most important abiotic stresses in agricultural production, which seriously affects grain yield. The alleviation of salt stress through the application of exogenous substances is important for grain production. Melatonin (MT, N-acetyl-5-methoxytryptamine) is an indole-like small molecule that can effectively alleviate the damage caused by adversity stress on crops. Current studies have mainly focused on the effects of MT on the physiology and biochemistry of crops at the seedling stage, with fewer studies on the gene regulatory mechanisms of crops at the germination stage. The aim of this study was to explain the mechanism of MT-induced salt tolerance at physiological, biochemical, and molecular levels and to provide a theoretical basis for the resolution of MT-mediated regulatory mechanisms of plant adaptation to salt stress. In this study, we investigated the germination, physiology, and transcript levels of maize seeds, analyzed the relevant differentially expressed genes (DEGs), and examined salt tolerance-related pathways. The results showed that MT could increase the seed germination rate by 14.28-19.04%, improve seed antioxidant enzyme activities (average increase of 11.61%), and reduce reactive oxygen species accumulation and membrane oxidative damage. In addition, MT was involved in regulating the changes of endogenous hormones during the germination of maize seeds under salt stress. Transcriptome results showed that MT affected the activity of antioxidant enzymes, response to stress, and seed germination-related genes in maize seeds under salt stress and regulated the expression of genes related to starch and sucrose metabolism and phytohormone signal transduction pathways. Taken together, the results indicate that exogenous MT can affect the expression of stress response-related genes in salt-stressed maize seeds, enhance the antioxidant capacity of the seeds, reduce the damage induced by salt stress, and thus promote the germination of maize seeds under salt stress. The results provide a theoretical basis for the MT-mediated regulatory mechanism of plant adaptation to salt stress and screen potential candidate genes for molecular breeding of salt-tolerant maize.
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Affiliation(s)
- Jiajie Wang
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Di Yan
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Rui Liu
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Ting Wang
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Yijia Lian
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Zhenzong Lu
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Yue Hong
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
| | - Ye Wang
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
- Beijing Key Laboratory for Agricultural Application and New Technique, Beijing 102206, China
| | - Runzhi Li
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (J.W.); (D.Y.); (R.L.); (T.W.); (Y.L.); (Z.L.); (Y.H.); (Y.W.)
- Beijing Key Laboratory for Agricultural Application and New Technique, Beijing 102206, China
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3
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Luo X, Xu X, Xu J, Zhao X, Zhang R, Shi Y, Xia M, Xian B, Zhou W, Zheng C, Wei S, Wang L, Du J, Liu W, Shu K. Melatonin Priming Promotes Crop Seed Germination and Seedling Establishment Under Flooding Stress by Mediating ABA, GA, and ROS Cascades. J Pineal Res 2024; 76:e13004. [PMID: 39145574 DOI: 10.1111/jpi.13004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/30/2024] [Accepted: 08/03/2024] [Indexed: 08/16/2024]
Abstract
Both seed germination and subsequent seedling establishment are key checkpoints during the life cycle of seed plants, yet flooding stress markedly inhibits both processes, leading to economic losses from agricultural production. Here, we report that melatonin (MT) seed priming treatment enhances the performance of seeds from several crops, including soybean, wheat, maize, and alfalfa, under flooding stress. Transcriptome analysis revealed that MT priming promotes seed germination and seedling establishment associated with changes in abscisic acid (ABA), gibberellin (GA), and reactive oxygen species (ROS) biosynthesis and signaling pathways. Real-time quantitative RT-PCR (qRT-PCR) analysis confirmed that MT priming increases the expression levels of GA biosynthesis genes, ABA catabolism genes, and ROS biosynthesis genes while decreasing the expression of positive ABA regulatory genes. Further, measurements of ABA and GA concentrations are consistent with these trends. Following MT priming, quantification of ROS metabolism-related enzyme activities and the concentrations of H2O2 and superoxide anions (O2 -) after MT priming were consistent with the results of transcriptome analysis and qRT-PCR. Finally, exogenous application of GA, fluridone (an ABA biosynthesis inhibitor), or H2O2 partially rescued the poor germination of non-primed seeds under flooding stress. Collectively, this study uncovers the application and molecular mechanisms underlying MT priming in modulating crop seed vigor under flooding stress.
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Affiliation(s)
- Xiaofeng Luo
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Xiaojing Xu
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Jiahui Xu
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Xiaoting Zhao
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Ranran Zhang
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Yiping Shi
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Mingyu Xia
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Baoshan Xian
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Wenguan Zhou
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Chuan Zheng
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Shaowei Wei
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Lei Wang
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
| | - Junbo Du
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, China
| | - Weiguo Liu
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, China
| | - Kai Shu
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, China
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4
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Ghani MI, Yi B, Rehmani MS, Wei X, Siddiqui JA, Fan R, Liu Y, El-Sheikh MA, Chen X, Ahmad P. Potential of melatonin and Trichoderma harzianum inoculation in ameliorating salt toxicity in watermelon: Insights into antioxidant system, leaf ultrastructure, and gene regulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108639. [PMID: 38688113 DOI: 10.1016/j.plaphy.2024.108639] [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: 12/25/2023] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 05/02/2024]
Abstract
Melatonin (MT) is an extensively studied biomolecule with dual functions, serving as an antioxidant and a signaling molecule. Trichoderma Harzianum (TH) is widely recognized for its effectiveness as a biocontrol agent against many plant pathogens. However, the interplay between seed priming and MT (150 μm) in response to NaCl (100 mM) and its interaction with TH have rarely been investigated. This study aimed to evaluate the potential of MT and TH, alone and in combination, to mitigate salt stress (SS) in watermelon plants. The findings of this study revealed a significant decline in the morphological, physiological, and biochemical indices of watermelon seedlings exposed to SS. However, MT and TH treatments reduced the negative impact of salt stress. The combined application of MT and TH exerted a remarkable positive effect by increasing the growth, photosynthetic and gas exchange parameters, chlorophyll fluorescence indices, and ion balance (decreasing Na+ and enhancing K+). MT and TH effectively alleviated oxidative injury by inhibiting hydrogen peroxide formation in saline and non-saline environments, as established by reduced lipid peroxidation and electrolyte leakage. Moreover, oxidative injury induced by SS on the cells was significantly mitigated by regulation of the antioxidant system, AsA-GSH-related enzymes, the glyoxalase system, augmentation of osmolytes, and activation of several genes involved in the defense system. Additionally, the reduction in oxidative damage was examined by chloroplast integrity via transmission electron microscopy (TEM). Overall, the results of this study provide a promising contribution of MT and TH in safeguarding the watermelon crop from oxidative damage induced by salt stress.
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Affiliation(s)
- Muhammad Imran Ghani
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China; Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang, 550025, China; International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China & China Association of Agricultural Science Societies, Guizhou University, Guiyang, 550025, China
| | - Benlin Yi
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China; Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang, 550025, China; International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China & China Association of Agricultural Science Societies, Guizhou University, Guiyang, 550025, China
| | - Muhammad Saad Rehmani
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China
| | - Xi Wei
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China; Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang, 550025, China; International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China & China Association of Agricultural Science Societies, Guizhou University, Guiyang, 550025, China
| | - Junaid Ali Siddiqui
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China; Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang, 550025, China; International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China & China Association of Agricultural Science Societies, Guizhou University, Guiyang, 550025, China
| | - Ruidong Fan
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China; Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang, 550025, China; International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China & China Association of Agricultural Science Societies, Guizhou University, Guiyang, 550025, China
| | - Yanjiang Liu
- College of Ecology and Environment, Tibet University, Lhasa 850000, China
| | - Mohamed A El-Sheikh
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh-11451, Saudi Arabia
| | - Xiaoyulong Chen
- College of Agriculture/College of Life Sciences, Guizhou University, Guiyang, 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China; Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang, 550025, China; International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China & China Association of Agricultural Science Societies, Guizhou University, Guiyang, 550025, China; College of Ecology and Environment, Tibet University, Lhasa 850000, China.
| | - Parvaiz Ahmad
- Department of Botany, GDC-Pulwama-192301, Jammu and Kashmir, India.
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Ameen M, Zafar A, Mahmood A, Zia MA, Kamran K, Javaid MM, Yasin M, Khan BA. Melatonin as a master regulatory hormone for genetic responses to biotic and abiotic stresses in model plant Arabidopsis thaliana: a comprehensive review. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23248. [PMID: 38310885 DOI: 10.1071/fp23248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/09/2024] [Indexed: 02/06/2024]
Abstract
Melatonin is a naturally occurring biologically active amine produced by plants, animals and microbes. This review explores the biosynthesis of melatonin in plants, with a particular focus on its diverse roles in Arabidopsis thaliana , a model species. Melatonin affects abiotic and biotic stress resistance in A. thaliana . Exogenous and endogenous melatonin is addressed in association with various conditions, including cold stress, high light stress, intense heat and infection with Botrytis cinerea or Pseudomonas , as well as in seed germination and lateral root formation. Furthermore, melatonin confers stress resistance in Arabidopsis by initiating the antioxidant system, remedying photosynthesis suppression, regulating transcription factors involved with stress resistance (CBF, DREB, ZAT, CAMTA, WRKY33, MYC2, TGA) and other stress-related hormones (abscisic acid, auxin, ethylene, jasmonic acid and salicylic acid). This article additionally addresses other precursors, metabolic components, expression of genes (COR , CBF , SNAT , ASMT , PIN , PR1 , PDF1.2 and HSFA ) and proteins (JAZ, NPR1) associated with melatonin and reducing both biological and environmental stressors. Furthermore, the future perspective of melatonin rich agri-crops is explored to enhance plant tolerance to abiotic and biotic stresses, maximise crop productivity and enhance nutritional worth, which may help improve food security.
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Affiliation(s)
- Muaz Ameen
- Department of Botany, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Asma Zafar
- Department of Botany, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Athar Mahmood
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Muhammad Anjum Zia
- Department of Biochemistry, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Kashif Kamran
- Department of Physics, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan
| | - Muhammad Mansoor Javaid
- Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan
| | - Muhammad Yasin
- Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan
| | - Bilal Ahmad Khan
- Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan
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Wang L, Tanveer M, Wang H, Arnao MB. Melatonin as a key regulator in seed germination under abiotic stress. J Pineal Res 2024; 76:e12937. [PMID: 38241678 DOI: 10.1111/jpi.12937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/23/2023] [Accepted: 01/02/2024] [Indexed: 01/21/2024]
Abstract
Seed germination (SG) is the first stage in a plant's life and has an immense importance in sustaining crop production. Abiotic stresses reduce SG by increasing the deterioration of seed quality, and reducing germination potential, and seed vigor. Thus, to achieve a sustainable level of crop yield, it is important to improve SG under abiotic stress conditions. Melatonin (MEL) is an important biomolecule that interplays in developmental processes and regulates many adaptive responses in plants, especially under abiotic stresses. Thus, this review specifically summarizes and discusses the mechanistic basis of MEL-mediated SG under abiotic stresses. MEL regulates SG by regulating some stress-specific responses and some common responses. For instance, MEL induced stress specific responses include the regulation of ionic homeostasis, and hydrolysis of storage proteins under salinity stress, regulation of C-repeat binding factors signaling under cold stress, starch metabolism under high temperature and heavy metal stress, and activation of aquaporins and accumulation of osmolytes under drought stress. On other hand, MEL mediated regulation of gibberellins biosynthesis and abscisic acid catabolism, redox homeostasis, and Ca2+ signaling are amongst the common responses. Nonetheless factors such as endogenous MEL contents, plant species, and growth conditions also influence above-mentioned responses. In conclusion, MEL regulates SG under abiotic stress conditions by interacting with different physiological mechanisms.
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Affiliation(s)
- Lei Wang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Mohsin Tanveer
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Hongling Wang
- CAS Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Marino B Arnao
- Phytohormones & Plant Development Laboratory, Department of Plant Biology (Plant Physiology), University of Murcia, Murcia, Spain
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7
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Liu Z, Dai H, Hao J, Li R, Pu X, Guan M, Chen Q. Current research and future directions of melatonin's role in seed germination. STRESS BIOLOGY 2023; 3:53. [PMID: 38047984 PMCID: PMC10695909 DOI: 10.1007/s44154-023-00139-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/17/2023] [Indexed: 12/05/2023]
Abstract
Seed germination is a complex process regulated by internal and external factors. Melatonin (N-acetyl-5-methoxytryptamine) is a ubiquitous signaling molecule, playing an important role in regulating seed germination under normal and stressful conditions. In this review, we aim to provide a comprehensive overview on melatonin's effects on seed germination on the basis of existing literature. Under normal conditions, exogenous high levels of melatonin can suppress or delay seed germination, suggesting that melatonin may play a role in maintaining seed dormancy and preventing premature germination. Conversely, under stressful conditions (e.g., high salinity, drought, and extreme temperatures), melatonin has been found to accelerate seed germination. Melatonin can modulate the expression of genes involved in ABA and GA metabolism, thereby influencing the balance of these hormones and affecting the ABA/GA ratio. Melatonin has been shown to modulate ROS accumulation and nutrient mobilization, which can impact the germination process. In conclusion, melatonin can inhibit germination under normal conditions while promoting germination under stressful conditions via regulating the ABA/GA ratios, ROS levels, and metabolic enzyme activity. Further research in this area will deepen our understanding of melatonin's intricate role in seed germination and may contribute to the development of improved seed treatments and agricultural practices.
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Affiliation(s)
- Ze Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Hengrui Dai
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Jinjiang Hao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Rongrong Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Xiaojun Pu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Miao Guan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China.
| | - Qi Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China.
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8
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Wong KC, Jayapalan JJ, Subramanian P, Ismail MN, Abdul-Rahman PS. Label-free quantitative mass spectrometry analysis of the circadian proteome of Drosophila melanogaster lethal giant larvae mutants reveals potential therapeutic effects of melatonin. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2023; 113:e22008. [PMID: 36915983 DOI: 10.1002/arch.22008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/10/2023] [Accepted: 02/22/2023] [Indexed: 05/16/2023]
Abstract
Mutation in the Drosophila melanogaster lethal giant larvae (lgl), a tumor suppressor gene with a well-established role in cellular polarity, is known to results in massive cellular proliferation and neoplastic outgrowths. Although the tumorigenic properties of lgl mutant have been previously studied, however, little is known about its consequences on the proteome. In this study, mass spectrometry-based label-free quantitative proteomics was employed to investigate the changes in the head and intestinal tissues proteins of Drosophila melanogaster, due to lgl mutation and following treatment with melatonin. Additionally, to uncover the time-influenced variations in the proteome during tumorigenesis and melatonin treatment, the rhythmic expression of proteins was also investigated at 6-h intervals within 24-h clock. Together, the present study has identified 434 proteins of altered expressions (p < 0.05 and fold change ±1.5) in the tissues of flies in response to lgl mutation as well as posttreatment with melatonin. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of differentially expressed proteins revealed that lgl mutation had significantly affected the biological functions, including metabolism, and protein synthesis and degradation, in flies' tissues. Besides, melatonin had beneficially mitigated the deleterious effects of lgl mutation by reversing the alterations in protein expression closer to baseline levels. Further, changes in protein expression in the tissues due to lgl mutation and melatonin treatment were found rhythmically orchestrated. Together, these findings provide novel insight into the pathways involved in lgl-induced tumorigenesis as well as demonstrated the efficacy of melatonin as a potential anticancer agent. Data are available via ProteomeXchange with identifier PXD033191.
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Affiliation(s)
- Kar-Cheng Wong
- Department of Molecular Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Jaime J Jayapalan
- Department of Molecular Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Proteomics Research (UMCPR), Universiti Malaya, Kuala Lumpur, Malaysia
| | - Perumal Subramanian
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | - Mohd Nazri Ismail
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, Bayan Lepas, Penang, Malaysia
| | - Puteri S Abdul-Rahman
- Department of Molecular Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Proteomics Research (UMCPR), Universiti Malaya, Kuala Lumpur, Malaysia
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9
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Ahmad I, Zhu G, Zhou G, Liu J, Younas MU, Zhu Y. Melatonin Role in Plant Growth and Physiology under Abiotic Stress. Int J Mol Sci 2023; 24:ijms24108759. [PMID: 37240106 DOI: 10.3390/ijms24108759] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Phyto-melatonin improves crop yield by mitigating the negative effects of abiotic stresses on plant growth. Numerous studies are currently being conducted to investigate the significant performance of melatonin in crops in regulating agricultural growth and productivity. However, a comprehensive review of the pivotal performance of phyto-melatonin in regulating plant morpho-physiological and biochemical activities under abiotic stresses needs to be clarified. This review focused on the research on morpho-physiological activities, plant growth regulation, redox status, and signal transduction in plants under abiotic stresses. Furthermore, it also highlighted the role of phyto-melatonin in plant defense systems and as biostimulants under abiotic stress conditions. The study revealed that phyto-melatonin enhances some leaf senescence proteins, and that protein further interacts with the plant's photosynthesis activity, macromolecules, and changes in redox and response to abiotic stress. Our goal is to thoroughly evaluate phyto-melatonin performance under abiotic stress, which will help us better understand the mechanism by which phyto-melatonin regulates crop growth and yield.
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Affiliation(s)
- Irshad Ahmad
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Guanglong Zhu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Guisheng Zhou
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Key Lab of Crop Genetics & Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China
| | - Jiao Liu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Muhammad Usama Younas
- Department of Crop Genetics and Breeding, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Yiming Zhu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
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Colombage R, Singh MB, Bhalla PL. Melatonin and Abiotic Stress Tolerance in Crop Plants. Int J Mol Sci 2023; 24:7447. [PMID: 37108609 PMCID: PMC10138880 DOI: 10.3390/ijms24087447] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/06/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Increasing food demand by the growing human population and declining crop productivity due to climate change affect global food security. To meet the challenges, developing improved crops that can tolerate abiotic stresses is a priority. Melatonin in plants, also known as phytomelatonin, is an active component of the various cellular mechanisms that alleviates oxidative damage in plants, hence supporting the plant to survive abiotic stress conditions. Exogenous melatonin strengthens this defence mechanism by enhancing the detoxification of reactive by-products, promoting physiological activities, and upregulating stress-responsive genes to alleviate damage during abiotic stress. In addition to its well-known antioxidant activity, melatonin protects against abiotic stress by regulating plant hormones, activating ER stress-responsive genes, and increasing protein homoeostasis, heat shock transcription factors and heat shock proteins. Under abiotic stress, melatonin enhances the unfolded protein response, endoplasmic reticulum-associated protein degradation, and autophagy, which ultimately protect cells from programmed cell death and promotes cell repair resulting in increased plant survival.
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Affiliation(s)
| | | | - Prem L. Bhalla
- Plant Molecular Biology and Biotechnology Laboratory, Faculty of Science, The University of Melbourne, Parkville, Melbourne, VIC 3010, Australia; (R.C.); (M.B.S.)
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11
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Wang X, Hu Y, Wang Y, Wang Y, Gao S, Zhang T, Guo J, Shi L. Integrated metabolomic and transcriptomic strategies to reveal alkali-resistance mechanisms in wild soybean during post-germination growth stage. PLANTA 2023; 257:95. [PMID: 37036535 DOI: 10.1007/s00425-023-04129-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
The keys to alkali-stress resistance of barren-tolerant wild soybean lay in enhanced reutilization of reserves in cotyledons as well as improved antioxidant protection and organic acid accumulation in young roots. Soil alkalization of farmlands is increasingly serious, adversely restricting crop growth and endangering food security. Here, based on integrated analysis of transcriptomics and metabolomics, we systematically investigated changes in cotyledon weight and young root growth in response to alkali stress in two ecotypes of wild soybean after germination to reveal alkali-resistance mechanisms in barren-tolerant wild soybean. Compared with barren-tolerant wild soybean, the dry weight of common wild soybean cotyledons under alkali stress decreased slowly and the length of young roots shortened. In barren-tolerant wild soybean, nitrogen-transport amino acids asparagine and glutamate decreased in cotyledons but increased in young roots, and nitrogen-compound transporter genes and genes involved in asparagine metabolism were significantly up-regulated in both cotyledons and young roots. Moreover, isocitric, succinic, and L-malic acids involved in the glyoxylate cycle significantly accumulated and the malate synthetase gene was up-regulated in barren-tolerant wild soybean cotyledons. In barren-tolerant wild soybean young roots, glutamate and glycine related to glutathione metabolism increased significantly and the glutathione reductase gene was up-regulated. Pyruvic acid and citric acid involved in pyruvate-citrate metabolism increased distinctly and genes encoding pyruvate decarboxylase and citrate synthetase were up-regulated. Integrated analysis showed that the keys to alkali-stress resistance of barren-tolerant wild soybean lay in enhanced protein decomposition, amino acid transport, and lipolysis in cotyledons as well as improved antioxidant protection and organic acid accumulation in young roots. This study provides new ideas for the exploitation and utilization of wild soybean resources.
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Affiliation(s)
- Xiaoning Wang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Yunan Hu
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Yuming Wang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Yida Wang
- College of Physical Education, Northeast Normal University, Changchun, 130024, China
| | - Shujuan Gao
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Tao Zhang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Jixun Guo
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Lianxuan Shi
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130024, China.
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12
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Zhao J, Hu J. Melatonin: Current status and future perspectives in horticultural plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1140803. [PMID: 37035081 PMCID: PMC10076644 DOI: 10.3389/fpls.2023.1140803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/01/2023] [Indexed: 06/19/2023]
Abstract
Global warming in this century increases incidences of various abiotic stresses, restricting plant growth and productivity and posing a severe threat to global food production and security. Different phytohormones are produced by plants to mitigate the adverse effects of these stresses. One such phytohormone is melatonin (MEL), which, being a potential bio-stimulator, helps to govern a wide array of functions in horticultural crops. Recent advancements have determined the role of MEL in plants' responses to abiotic stresses. MEL enhances physiological functions such as seed germination, growth and development, seedling growth, root system architecture, and photosynthetic efficiency. The potential function of MEL in stressful environments is to regulate the enzymatic and non-enzymatic antioxidant activity, thus playing a role in the substantial scavenging of reactive oxygen species (ROS). Additionally, MEL, as a plant growth regulator and bio-stimulator, aids in promoting plant tolerance to abiotic stress, mainly through improvements in nutrient uptake, osmolyte production, and cellular membrane stability. This review, therefore, focuses on the possible functions of MEL in the induction of different abiotic stresses in horticultural crops. Therefore, this review would help readers learn more about MEL in altered environments and provide new suggestions on how this knowledge could be used to develop stress tolerance.
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13
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Ahmad I, Song X, Hussein Ibrahim ME, Jamal Y, Younas MU, Zhu G, Zhou G, Adam Ali AY. The role of melatonin in plant growth and metabolism, and its interplay with nitric oxide and auxin in plants under different types of abiotic stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1108507. [PMID: 36866369 PMCID: PMC9971941 DOI: 10.3389/fpls.2023.1108507] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 01/09/2023] [Indexed: 06/01/2023]
Abstract
Melatonin is a pleiotropic signaling molecule that reduces the adverse effects of abiotic stresses, and enhances the growth and physiological function of many plant species. Several recent studies have demonstrated the pivotal role of melatonin in plant functions, specifically its regulation of crop growth and yield. However, a comprehensive understanding of melatonin, which regulates crop growth and yield under abiotic stress conditions, is not yet available. This review focuses on the progress of research on the biosynthesis, distribution, and metabolism of melatonin, and its multiple complex functions in plants and its role in the mechanisms of metabolism regulation in plants grown under abiotic stresses. In this review, we focused on the pivotal role of melatonin in the enhancement of plant growth and regulation of crop yield, and elucidated its interactions with nitric oxide (NO) and auxin (IAA, indole-3-acetic acid) when plants are grown under various abiotic stresses. The present review revealed that the endogenousapplication of melatonin to plants, and its interactions with NO and IAA, enhanced plant growth and yield under various abiotic stresses. The interaction of melatonin with NO regulated plant morphophysiological and biochemical activities, mediated by the G protein-coupled receptor and synthesis genes. The interaction of melatonin with IAA enhanced plant growth and physiological function by increasing the levels of IAA, synthesis, and polar transport. Our aim was to provide a comprehensive review of the performance of melatonin under various abiotic stresses, and, therefore, further explicate the mechanisms that plant hormones use to regulate plant growth and yield under abiotic stresses.
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Affiliation(s)
- Irshad Ahmad
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Xudong Song
- Department of Agronomy, Institute of Agricultural, Sudan University of Science and Technology, Khartoum, Sudan
| | - Muhi Eldeen Hussein Ibrahim
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Yanjiang Area, Institute of Agricultural Sciences, Nantong, China
| | - Yousaf Jamal
- Department of Agronomy, Faculty of Agriculture, University of Swabi, Swabi, Pakistan
| | - Muhammad Usama Younas
- Department of Crop Genetics and Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Guanglong Zhu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Guisheng Zhou
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, College of Agriculture, Yangzhou University, Yangzhou, China
- Key Lab of Crop Genetics & Physiology of Jiangsu Province, Yangzhou University, Yangzhou, China
| | - Adam Yousif Adam Ali
- Department of Agronomy, Faculty of Agricultural and Environmental Science, University of Gadarif, Al Gadarif, Sudan
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14
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Li Y, Chu Y, Sun H, Bao Q, Huang Y. Melatonin alleviates arsenite toxicity by decreasing the arsenic accumulation in cell protoplasts and increasing the antioxidant capacity in rice. CHEMOSPHERE 2023; 312:137292. [PMID: 36403814 DOI: 10.1016/j.chemosphere.2022.137292] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/19/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Arsenic (As) is a common environmental pollutant that seriously interferes with the normal growth of organisms. There is an urgent need to take environment-safe and efficient strategies to mitigate As toxicity. Melatonin (MT) is a pleiotropic molecule that regulates plant growth and organ development and alleviates heavy metal stresses. The experiment aims to explore the mechanism of MT in reducing arsenite toxicity by hydroponic rice seedlings. The results showed that MT application reduced the As content in rice roots and shoots by 26.4% and 37.5%, respectively, and mainly decreased As content in the soluble fractions of the rice root cell. MT application also increased the As content of chelated-soluble pectin and alkali-soluble pectin in the cell wall by 14.7% and 74.4%, respectively. It promoted the generation of the functional group of the root cell walls by the FTIR analysis, indicating that MT may promote the fixation of As on the cell wall. Meanwhile, MT contributed to scavenging excess H2O2, reducing MDA content, and maintaining normal morphology of root cells by stimulating SOD, POD and CAT activities and increasing the level of GSH. The research deepens our understanding of how MT participates in maintaining redox homeostasis in rice cells, reducing As toxicity, and decreasing As concentration in rice seedlings, thereby providing more possibilities for reducing As accumulation in rice.
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Affiliation(s)
- Yan Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Yutan Chu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Hongyu Sun
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Qiongli Bao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
| | - Yizong Huang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
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Pan Y, Xu X, Li L, Sun Q, Wang Q, Huang H, Tong Z, Zhang J. Melatonin-mediated development and abiotic stress tolerance in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1100827. [PMID: 36778689 PMCID: PMC9909564 DOI: 10.3389/fpls.2023.1100827] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/02/2023] [Indexed: 05/13/2023]
Abstract
Melatonin is a multifunctional molecule that has been widely discovered in most plants. An increasing number of studies have shown that melatonin plays essential roles in plant growth and stress tolerance. It has been extensively applied to alleviate the harmful effects of abiotic stresses. In view of its role in regulating aspects of plant growth and development, we ponder and summarize the scientific discoveries about seed germination, root development, flowering, fruit maturation, and senescence. Under abiotic and biotic stresses, melatonin brings together many pathways to increase access to treatments for the symptoms of plants and to counteract the negative effects. It has the capacity to tackle regulation of the redox, plant hormone networks, and endogenous melatonin. Furthermore, the expression levels of several genes and the contents of diverse secondary metabolites, such as polyphenols, terpenoids, and alkaloids, were significantly altered. In this review, we intend to examine the actions of melatonin in plants from a broader perspective, explore the range of its physiological functions, and analyze the relationship between melatonin and other metabolites and metabolic pathways.
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Affiliation(s)
- Yue Pan
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Xiaoshan Xu
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Lei Li
- Hunan Academy of Forestry, Changsha, Hunan, China
| | - Qinglin Sun
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Qiguang Wang
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Huahong Huang
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Zaikang Tong
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
- *Correspondence: Zaikang Tong, ; Junhong Zhang,
| | - Junhong Zhang
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
- *Correspondence: Zaikang Tong, ; Junhong Zhang,
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Vlajkov V, Pajčin I, Loc M, Budakov D, Dodić J, Grahovac M, Grahovac J. The Effect of Cultivation Conditions on Antifungal and Maize Seed Germination Activity of Bacillus-Based Biocontrol Agent. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9120797. [PMID: 36551004 PMCID: PMC9774550 DOI: 10.3390/bioengineering9120797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/28/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022]
Abstract
Aflatoxin contamination is a global risk and a concerning problem threatening food safety. The biotechnological answer lies in the production of biocontrol agents that are effective against aflatoxins producers. In addition to their biocontrol effect, microbial-based products are recognized as efficient biosolutions for plant nutrition and growth promotion. The present study addresses the characterization of the representative of Phaseolus vulgaris rhizosphere microbiome, Bacillus sp. BioSol021, regarding plant growth promotion traits, including the activity of protease, cellulase, xylanase, and pectinase with the enzymatic activity index values 1.06, 2.04, 2.41, and 3.51, respectively. The potential for the wider commercialization of this kind of product is determined by the possibility of developing a scalable bioprocess solution suitable for technology transfer to an industrial scale. Therefore, the study addresses one of the most challenging steps in bioprocess development, including the production scale-up from the Erlenmeyer flask to the laboratory bioreactor. The results indicated the influence of the key bioprocess parameters on the dual mechanism of action of biocontrol effects against the aflatoxigenic Aspergillus flavus, as well on maize seed germination activity, pointing out the positive impact of high aeration intensity and agitation rate, resulting in inhibition zone diameters of 60 mm, a root length 96 mm, and a shoot length 27 mm.
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Affiliation(s)
- Vanja Vlajkov
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
- Correspondence: (V.V.); (J.G.)
| | - Ivana Pajčin
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
| | - Marta Loc
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - Dragana Budakov
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - Jelena Dodić
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
| | - Mila Grahovac
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - Jovana Grahovac
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
- Correspondence: (V.V.); (J.G.)
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17
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Wang Y, Zhao H, Hu X, Zhang Y, Zhang Z, Zhang L, Li L, Hou L, Li M. Transcriptome and hormone Analyses reveal that melatonin promotes adventitious rooting in shaded cucumber hypocotyls. FRONTIERS IN PLANT SCIENCE 2022; 13:1059482. [PMID: 36518515 PMCID: PMC9742233 DOI: 10.3389/fpls.2022.1059482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
Melatonin, a multi-regulatory molecule, stimulates root generation and regulates many aspects of plant growth and developmental processes. To gain insight into the effects of melatonin on adventitious root (AR) formation, we use cucumber seedings subjected to one of three treatments: EW (hypocotyl exposed and irrigated with water), SW (hypocotyl shaded and irrigated with water) and SM (hypocotyl shaded and irrigated with 100 µM melatonin). Under shaded conditions, melatonin induced significant AR formation in the hypocotyl. To explore the mechanism of this melatonin-induced AR formation, we used transcriptome analysis to identify 1296 significant differentially expressed genes (DEGs). Comparing SM with SW, a total of 774 genes were upregulated and 522 genes were downregulated. The DEGs were classified among different metabolic pathways, especially those connected with the synthesis of secondary metabolites, with hormone signal transduction and with plant-pathogen interactions. Analyses indicate exogenous melatonin increased contents of endogenous auxin, jasmonic acid, salicylic acid, cytokinin and abscisic acid levels during AR formation. This study indicates melatonin promotes AR formation in cucumber seedings by regulating the expressions of genes related to hormone synthesis, signaling and cell wall formation, as well as by increasing the contents of auxin, cytokinin, jasmonic acid, salicylic acid and abscisic acid. This research elucidates the molecular mechanisms of melatonin's role in promoting AR formation in the hypocotyl of cucumber seedings under shaded conditions.
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Affiliation(s)
- Yuping Wang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
- Experimental Teaching Center, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Hailiang Zhao
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Xiaohui Hu
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Yi Zhang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Zicun Zhang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Lu Zhang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Lixia Li
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Leiping Hou
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Meilan Li
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
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18
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Liu P, Wu X, Gong B, Lü G, Li J, Gao H. Review of the Mechanisms by Which Transcription Factors and Exogenous Substances Regulate ROS Metabolism under Abiotic Stress. Antioxidants (Basel) 2022; 11:2106. [PMID: 36358478 PMCID: PMC9686556 DOI: 10.3390/antiox11112106] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 10/03/2023] Open
Abstract
Reactive oxygen species (ROS) are signaling molecules that regulate many biological processes in plants. However, excess ROS induced by biotic and abiotic stresses can destroy biological macromolecules and cause oxidative damage to plants. As the global environment continues to deteriorate, plants inevitably experience abiotic stress. Therefore, in-depth exploration of ROS metabolism and an improved understanding of its regulatory mechanisms are of great importance for regulating cultivated plant growth and developing cultivars that are resilient to abiotic stresses. This review presents current research on the generation and scavenging of ROS in plants and summarizes recent progress in elucidating transcription factor-mediated regulation of ROS metabolism. Most importantly, the effects of applying exogenous substances on ROS metabolism and the potential regulatory mechanisms at play under abiotic stress are summarized. Given the important role of ROS in plants and other organisms, our findings provide insights for optimizing cultivation patterns and for improving plant stress tolerance and growth regulation.
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Affiliation(s)
- Peng Liu
- Key Laboratory of North China Water-Saving Irrigation Engineering, Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
- Institute of Vegetables Research, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Xiaolei Wu
- Key Laboratory of North China Water-Saving Irrigation Engineering, Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
| | - Binbin Gong
- Key Laboratory of North China Water-Saving Irrigation Engineering, Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
| | - Guiyun Lü
- Key Laboratory of North China Water-Saving Irrigation Engineering, Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
| | - Jingrui Li
- Key Laboratory of North China Water-Saving Irrigation Engineering, Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
| | - Hongbo Gao
- Key Laboratory of North China Water-Saving Irrigation Engineering, Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Collaborative Innovation Center of Vegetable Industry in Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
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Zou P, Guo Y, Ding S, Song Z, Cui H, Zhang Y, Zhang Z, Chen X. Autotoxicity of Endogenous Organic Acid Stress in Two Ganoderma lucidum Cultivars. Molecules 2022; 27:molecules27196734. [PMID: 36235268 PMCID: PMC9570943 DOI: 10.3390/molecules27196734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/05/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
Ganoderma lucidum has been used as a rare medical mushroom for centuries in China, due to its health-promoting properties. Successive cropping obstacles are common in the cultivation of G. lucidum, although the remaining nutrients in the germ substrate are sufficient for a second fruiting. Here, we aimed to study the metabolite profile of G. lucidum via nontargeted metabonomic technology. Metabonomic data revealed that organic acids played an important role in the cropping obstacles of G. lucidum, which is accordance with the pH decrease in the germ substrate. A Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis indicated that most differential acids participated in the metabolic pathways. Five acids were all significantly upregulated by two MS with high energy (MSE) modes in two cultivars, among which 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylic acid is also involved in purine metabolism regulation and microbial metabolism in diverse environments. Taken together, this work illustrated the organic acid stress generated by G. lucidum, which formed the autotoxicity feedback, and resulted in cropping obstacles. Determining the cause of the cropping obstacles in G. lucidum will promote the utilization rate of fungus substrate to realize the sustainable use of this resource.
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Huang X, Tanveer M, Min Y, Shabala S. Melatonin as a regulator of plant ionic homeostasis: implications for abiotic stress tolerance. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5886-5902. [PMID: 35640481 DOI: 10.1093/jxb/erac224] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
Melatonin is a highly conserved and ubiquitous molecule that operates upstream of a broad array of receptors in animal systems. Since melatonin was discovered in plants in 1995, hundreds of papers have been published revealing its role in plant growth, development, and adaptive responses to the environment. This paper summarizes the current state of knowledge of melatonin's involvement in regulating plant ion homeostasis and abiotic stress tolerance. The major topics covered here are: (i) melatonin's control of H+-ATPase activity and its implication for plant adaptive responses to various abiotic stresses; (ii) regulation of the reactive oxygen species (ROS)-Ca2+ hub by melatonin and its role in stress signaling; and (iii) melatonin's regulation of ionic homeostasis via hormonal cross-talk. We also show that the properties of the melatonin molecule allow its direct scavenging of ROS, thus preventing negative effects of ROS-induced activation of ion channels. The above 'desensitization' may play a critical role in preventing stress-induced K+ loss from the cytosol as well as maintaining basic levels of cytosolic Ca2+ required for optimal cell operation. Future studies should focus on revealing the molecular identity of transporters that could be directly regulated by melatonin and providing a bioinformatic analysis of evolutionary aspects of melatonin sensing and signaling.
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Affiliation(s)
- Xin Huang
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, China
| | - Mohsin Tanveer
- Tasmanian Institute of Agriculture, University of Tasmania, Tas, Hobart, Australia
| | - Yu Min
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, China
| | - Sergey Shabala
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, China
- Tasmanian Institute of Agriculture, University of Tasmania, Tas, Hobart, Australia
- School of Biological Sciences, University of Western Australia, Perth, WA, Australia
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21
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Chen Y, Wang J, Yao L, Li B, Ma X, Si E, Yang K, Li C, Shang X, Meng Y, Wang H. Combined Proteomic and Metabolomic Analysis of the Molecular Mechanism Underlying the Response to Salt Stress during Seed Germination in Barley. Int J Mol Sci 2022; 23:ijms231810515. [PMID: 36142428 PMCID: PMC9499682 DOI: 10.3390/ijms231810515] [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: 08/06/2022] [Revised: 09/07/2022] [Accepted: 09/07/2022] [Indexed: 11/18/2022] Open
Abstract
Salt stress is a major abiotic stress factor affecting crop production, and understanding of the response mechanisms of seed germination to salt stress can help to improve crop tolerance and yield. The differences in regulatory pathways during germination in different salt-tolerant barley seeds are not clear. Therefore, this study investigated the responses of different salt-tolerant barley seeds during germination to salt stress at the proteomic and metabolic levels. To do so, the proteomics and metabolomics of two barley seeds with different salt tolerances were comprehensively examined. Through comparative proteomic analysis, 778 differentially expressed proteins were identified, of which 335 were upregulated and 443 were downregulated. These proteins, were mainly involved in signal transduction, propanoate metabolism, phenylpropanoid biosynthesis, plant hormones and cell wall stress. In addition, a total of 187 salt-regulated metabolites were identified in this research, which were mainly related to ABC transporters, amino acid metabolism, carbohydrate metabolism and lipid metabolism; 72 were increased and 112 were decreased. Compared with salt-sensitive materials, salt-tolerant materials responded more positively to salt stress at the protein and metabolic levels. Taken together, these results suggest that salt-tolerant germplasm may enhance resilience by repairing intracellular structures, promoting lipid metabolism and increasing osmotic metabolites. These data not only provide new ideas for how seeds respond to salt stress but also provide new directions for studying the molecular mechanisms and the metabolic homeostasis of seeds in the early stages of germination under abiotic stresses.
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Affiliation(s)
- Yiyou Chen
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Juncheng Wang
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Lirong Yao
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Baochun Li
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
- Department of Botany, College of Life Sciences and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiaole Ma
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Erjing Si
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Ke Yang
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Chengdao Li
- Western Barley Genetics Alliance, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA 6150, Australia
| | - Xunwu Shang
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Yaxiong Meng
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
- Correspondence: (Y.M.); (H.W.)
| | - Huajun Wang
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Lab of Aridland Crop Science/Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
- Correspondence: (Y.M.); (H.W.)
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22
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Basic Cognition of Melatonin Regulation of Plant Growth under Salt Stress: A Meta-Analysis. Antioxidants (Basel) 2022; 11:antiox11081610. [PMID: 36009327 PMCID: PMC9405259 DOI: 10.3390/antiox11081610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/15/2022] [Accepted: 08/18/2022] [Indexed: 11/28/2022] Open
Abstract
Salt stress severely restricts the growth of plants and threatens the development of agriculture throughout the world. Worldwide studies have shown that exogenous melatonin (MT) can effectively improve the growth of plants under salt stress. Through a meta-analysis of 549 observations, this study first explored the effects of salt stress characteristics and MT application characteristics on MT regulated plant growth under salt stress. The results show that MT has a wide range of regulatory effects on plant growth indicators under salt stress, of which the regulatory effect on root indexes is the strongest, and this regulatory effect is not species-specific. The intensity of salt stress did not affect the positive effect of MT on plant growth, but the application effect of MT in soil was stronger than that in rooting medium. This meta-analysis also revealed that the foliar application of a concentration between 100–200 μM is the best condition for MT to enhance plant growth under salt stress. The results can inspire scientific research and practical production, while seeking the maximum improvement in plant salt tolerance under salt stress.
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23
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Wei L, Zhao H, Wang B, Wu X, Lan R, Huang X, Chen B, Chen G, Jiang C, Wang J, Liu Y, Zheng Q. Exogenous Melatonin Improves the Growth of Rice Seedlings by Regulating Redox Balance and Ion Homeostasis Under Salt Stress. JOURNAL OF PLANT GROWTH REGULATION 2022; 41:2108-2121. [PMID: 0 DOI: 10.1007/s00344-021-10417-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 06/05/2021] [Indexed: 05/26/2023]
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24
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Wang K, Cai S, Xing Q, Qi Z, Fotopoulos V, Yu J, Zhou J. Melatonin delays dark-induced leaf senescence by inducing miR171b expression in tomato. J Pineal Res 2022; 72:e12792. [PMID: 35174545 DOI: 10.1111/jpi.12792] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/29/2022] [Accepted: 02/11/2022] [Indexed: 11/29/2022]
Abstract
Melatonin functions in multiple aspects of plant growth, development, and stress response. Nonetheless, the mechanism of melatonin in plant carbon metabolism remains largely unknown. In this study, we investigated the influence of melatonin on the degradation of starch in tomato leaves. Results showed that exogenous melatonin attenuated carbon starvation-induced chlorophyll degradation and leaf senescence. In addition, melatonin delayed leaf starch degradation and inhibited the transcription of starch-degrading enzymes after sunset. Interestingly, melatonin-alleviated symptoms of leaf senescence and starch degradation were compromised when the first key gene for starch degradation, α-glucan water dikinase (GWD), was overexpressed. Furthermore, exogenous melatonin significantly upregulated the transcript levels of several microRNAs, including miR171b. Crucially, the GWD gene was identified as a target of miR171b, and the overexpression of miR171b ameliorated the carbon starvation-induced degradation of chlorophyll and starch, and inhibited the expression of the GWD gene. Taken together, these results demonstrate that melatonin promotes plant tolerance against carbon starvation by upregulating the expression of miR171b, which can directly inhibit GWD expression in tomato leaves.
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Affiliation(s)
- Kaixin Wang
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou, People's Republic of China
| | - Shuyu Cai
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou, People's Republic of China
| | - Qufan Xing
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou, People's Republic of China
| | - Zhenyu Qi
- Agricultural Experiment Station, Zhejiang University, Hangzhou, People's Republic of China
| | - Vasileios Fotopoulos
- Department of Agricultural Sciences Biotechnology and Food Science, Cyprus University of Technology, Lemesos, Cyprus
| | - Jingquan Yu
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou, People's Republic of China
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Ministry of Agriculture and Rural Affairs, Hangzhou, People's Republic of China
| | - Jie Zhou
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou, People's Republic of China
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Ministry of Agriculture and Rural Affairs, Hangzhou, People's Republic of China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, People's Republic of China
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25
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Yaghoubian I, Msimbira LA, Smith DL. Cell-Free Supernatant of Bacillus Strains can Improve Seed Vigor Index of Corn (Zea mays L.) Under Salinity Stress. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.857643] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Currently, salinity is the second biggest challenge in the world after drought and affects all stages of plant growth. The use of environmentally friendly methods such as microorganisms and their derivatives can reduce the destructive effects of salinity stress. A growth chamber experiment was conducted to determine the effects of cell-free supernatant (CFS) from Bacillus strains on germination of corn under salinity stress. Corn seeds were subjected to three salinity levels (0, 100 and 150 mM of NaCl), cell-free supernatant of Bacillus strains (U35, U47, U48, U49, and U50) at two levels of dilution (1:50 and 1:250). Germination percentage and rate decreased with increasing salinity toward 150 mM NaCl all together leading to suppressed growth variables for corn seed seedlings including fresh and dry weight of radicle (47.71 and 52.63%, respectively), and shoot (49.52 and 49.25%, respectively), radicle and shoot lengths (39.90 and 66.07%, respectively). Seed vigor index also decreased by 63.04% at 150 mM NaCl. Contrary to salinity, the CFSs of Bacillus strains increased all the growth traits of corn seeds and reduced the negative effects of salinity, especially severe salinity. Ratios of 1:50 and 1: 250 gave best performance for CFSs from U35 and U50, respectively. In general, the highest seed vigor index was obtained by application of 1: 250 CFS from U50. Most germination traits and seed vigor index correlated significantly positive; however, mean germination time was negatively and significantly correlated with the seed vigor index of corn. The results showed that cell-free supernatant use, may as well-helped in changing the ratios of phytohormones, ROS, the activity of antioxidant enzymes and osmotic proteins, hence reduce the negative effects of salinity and improve seed vigor index which eventually increases the ability of plant seedling establishment under saline conditions.
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26
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Zhao S, Zou H, Jia Y, Pan X, Huang D. Carrot ( Daucus carota L.) Seed Germination Was Promoted by Hydro-Electro Hybrid Priming Through Regulating the Accumulation of Proteins Involved in Carbohydrate and Protein Metabolism. FRONTIERS IN PLANT SCIENCE 2022; 13:824439. [PMID: 35222483 PMCID: PMC8868939 DOI: 10.3389/fpls.2022.824439] [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: 11/29/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Asynchronized and non-uniform seed germination is causing obstacles to the large-scale cultivation of carrot (Daucus carota L.). In the present study, the combination of high voltage electrostatic field treatment (EF) with hydropriming (HYD), namely hydro-electro hybrid priming (HEHP), significantly improved all germination indicators of carrot seeds, and the promoting effect was superior to that of the HYD treatment. A tandem mass tags (TMT)-based proteomic analysis identified 4,936 proteins from the seeds, and the maximum number of differentially abundant proteins (DAPs) appeared between CK and HEHP. KEGG analysis revealed that the upregulated DAPs were mainly enriched in the pathways related to protein synthesis and degradation such as "ribosome" and "proteasome," while the downregulated DAPs were mainly enriched in photosynthesis-related pathways. Furthermore, the maximum DAPs were annotated in carbohydrate metabolism. Some proteins identified as key enzymes of the glyoxylate cycle, the tricarboxylate cycle, glycolysis and the pentose phosphate pathway showed enhanced abundance in priming treatments. The activities of several key enzymes involved in carbohydrate metabolism were also enhanced by the priming treatments, especially the HEHP treatment. Real-time quantitative PCR (qRT-PCR) analysis revealed that the effect of priming is mainly reflected before sowing. In conclusion, the optimal effect of HEHP is to regulate the synthesis and degradation of proteins in seeds to meet the requirements of germination and initiate the utilization of seed storage reserves and respiratory metabolism. The present work expanded the understanding of the response mechanism of carrot seed germination to priming and the biological effects of high voltage electrostatic field.
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Affiliation(s)
- Shuo Zhao
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Hao Zou
- School of Mechanical Engineering, Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai, China
| | - Yingjie Jia
- Shanghai Vegetable Research Institute, Shanghai, China
| | - Xueqin Pan
- Shanghai Vegetable Research Institute, Shanghai, China
| | - Danfeng Huang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Vegetable Research Institute, Shanghai, China
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27
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Zhang Z, Liu L, Li H, Zhang S, Fu X, Zhai X, Yang N, Shen J, Li R, Li D. Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat ( Triticum aestivum L.). FRONTIERS IN PLANT SCIENCE 2022; 12:787062. [PMID: 35173749 PMCID: PMC8841648 DOI: 10.3389/fpls.2021.787062] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/17/2021] [Indexed: 05/16/2023]
Abstract
Melatonin (MT) is a small molecule indole hormone that plays an important role in the regulation of biological processes and abiotic stress resistance. Previous studies have confirmed that MT promotes the normal development of plants under stress by mediating physiological regulation mechanisms. However, the physiological mechanism of exogenous MT regulating seed germination and seedling growth of wheat under salt stress is still unclear. In this study, NaCl stress decreased germination rate and inhibited seedling growth of wheat, but shoot length, root length, and plant weight of SM15 did not change significantly. The addition of 300 μM MT in the cultivation solution directly promoted the germination rate of SM15 and ZM18, and lateral root production, but decreased the germination rate of JM22 and inhibited the length of germ and radicle of three varieties under salt stress. For wheat seedling, application of MT could increase proline content, soluble protein, soluble sugar, Ca2+ content, and vital amino acid content in leaves to keep high water content, low level of H2O2 content, and low [K+]/[Na+] ratio. MT increased root vigor and [K+]/[Na+] ratio and decreased H2O2 content in root induced by salt stress. In conclusion, MT enhanced salt tolerance in wheat seeds and seedlings by regulating the synthesis of soluble protein and sugar, ion compartmentation in roots and leaves, enhancement of enzymatic systems, and changes in amino acid levels. Salt resistance varied with different varieties under the same environmental condition. SM15 was a higher salt-resistant variety and JM22 was a salt-sensitive one. In wheat production, the application of exogenous MT should consider the differences among varieties of wheat during the sowing and seedling stages.
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Affiliation(s)
- Zhihui Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Liantao Liu
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Hongye Li
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
- National Engineering Laboratory for Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shaocong Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Xiaoyi Fu
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
- Shijiazhuang Academy of Agricultural and Forestry Sciences, Shijiazhuang, China
| | - Xiuzhen Zhai
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Na Yang
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Jiaming Shen
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Ruiqi Li
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Dongxiao Li
- State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, China
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28
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Melatonin Treatment Improves Postharvest Preservation and Resistance of Guava Fruit (Psidium guajava L.). Foods 2022; 11:foods11030262. [PMID: 35159414 PMCID: PMC8834009 DOI: 10.3390/foods11030262] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 11/26/2022] Open
Abstract
Guava fruit has a short postharvest shelf life at room temperature. Melatonin is widely used for preservation of various postharvest fruit and vegetables. In this study, an optimal melatonin treatment (600 μmol·L−1, 2 h) was identified, which effectively delayed fruit softening and reduced the incidence of anthracnose on guava fruit. Melatonin effectively enhanced the antioxidant capacity and reduced the oxidative damage to the fruit by reducing the contents of superoxide anions, hydrogen peroxide and malondialdehyde; improving the overall antioxidant capacity and enhancing the enzymatic antioxidants and non-enzymatic antioxidants. Melatonin significantly enhanced the activities of catalase, superoxide dismutase, ascorbate peroxidase and glutathione reductase. The contents of total flavonoids and ascorbic acid were maintained by melatonin. This treatment also enhanced the defense-related enzymatic activities of chitinase and phenylpropanoid pathway enzymes, including phenylalanine ammonia lyase and 4-coumaric acid-CoA-ligase. The activities of lipase, lipoxygenase and phospholipase D related to lipid metabolism were repressed by melatonin. These results showed that exogenous melatonin can maintain the quality of guava fruit and enhance its resistance to disease by improving the antioxidant and defense systems of the fruit.
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29
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Zeng W, Mostafa S, Lu Z, Jin B. Melatonin-Mediated Abiotic Stress Tolerance in Plants. FRONTIERS IN PLANT SCIENCE 2022; 13:847175. [PMID: 35615125 PMCID: PMC9125191 DOI: 10.3389/fpls.2022.847175] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 04/19/2022] [Indexed: 05/07/2023]
Abstract
Melatonin is a multi-functional molecule that is ubiquitous in all living organisms. Melatonin performs essential roles in plant stress tolerance; its application can reduce the harmful effects of abiotic stresses. Plant melatonin biosynthesis, which usually occurs within chloroplasts, and its related metabolic pathways have been extensively characterized. Melatonin regulates plant stress responses by directly inhibiting the accumulation of reactive oxygen and nitrogen species, and by indirectly affecting stress response pathways. In this review, we summarize recent research concerning melatonin biosynthesis, metabolism, and antioxidation; we focus on melatonin-mediated tolerance to abiotic stresses including drought, waterlogging, salt, heat, cold, heavy metal toxicity, light and others. We also examine exogenous melatonin treatment in plants under abiotic stress. Finally, we discuss future perspectives in melatonin research and its applications in plants.
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Affiliation(s)
- Wen Zeng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Salma Mostafa
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- Department of Floriculture, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
| | - Zhaogeng Lu
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- *Correspondence: Zhaogeng Lu,
| | - Biao Jin
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- Biao Jin,
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30
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Han Y, Gao Y, Li M, Du Y, Zhang Y, Zhang W, Du J. The molecular events underpinning cultivar differences in melatonin counteracting salt damage in Phaseolus vulgaris. FUNCTIONAL PLANT BIOLOGY : FPB 2022; 49:201-217. [PMID: 34871542 DOI: 10.1071/fp21126] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
Melatonin (N -acetyl-5-methoxytryptamine) plays important roles in multiple stress responses, especially under salt stress. However, cultivar differences in melatonin mediated salt stress tolerance are unclear. Phaseolus vulgaris L. (common bean) cultivars Jiyin 1 (JY, salt-tolerant) and Xuliyabai (XL, salt-sensitive) were used in this study. Exogenous melatonin significantly improved root growth under salt stress in JY, but had little effect on XL. Physiology analysis showed significant differences in activities of antioxidant enzymes (superoxide, SOD; and catalase, CAT) and malondialdehyde content between JY and XL. Meanwhile, the change of ABA content in JY and XL root was opposite in salt plus melatonin treatment. Comparative root transcriptomes of JY and XL revealed 3505 and 668 differentially expressed genes (DEGs) regulated by salt stress and melatonin. The most enriched melatonin-responsive genes under salt stress are mainly involved in regulation of transcription, oxidation-reduction process, transcription factor activity, oxidoreductase activity. In addition, melatonin induced more obvious changes of DEGs in JY than that in XL under salt condition. Melatonin also significantly induced 41 DEGs only in JY, including signal transduction genes, transcription factors, ubiquitin protein ligases, ion homeostasis and osmotic adjustment genes etc. This study uncovered the molecular mechanism of cultivar difference of melatonin response under salt stress in common bean.
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Affiliation(s)
- Yiqiang Han
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China; and National Coarse Cereals Engineering Research Center, Daqing 163319, Heilongjiang Province, P. R. China
| | - Yamei Gao
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China; and Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in the Cold Region, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China
| | - Ming Li
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China
| | - Yanli Du
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China
| | - Yuxian Zhang
- National Coarse Cereals Engineering Research Center, Daqing 163319, Heilongjiang Province, P. R. China; and College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China
| | - Wenhui Zhang
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China
| | - Jidao Du
- National Coarse Cereals Engineering Research Center, Daqing 163319, Heilongjiang Province, P. R. China; and College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang Province, P. R. China
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31
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Zhang Y, Wang J, Chen X, Lu X, Wang D, Wang J, Wang S, Chen C, Guo L, Malik WA, Fan Y, Rui C, Cui R, Wang Q, Lei Y, Ye W. Genome-wide identification and characteristic analysis of the downstream melatonin metabolism gene GhM2H in Gossypium hirsutum L. Biol Res 2021; 54:36. [PMID: 34736526 PMCID: PMC8567562 DOI: 10.1186/s40659-021-00358-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 10/16/2021] [Indexed: 12/13/2022] Open
Abstract
Background Melatonin 2-hydroxylase (M2H) is the first enzyme in the catabolism pathway of melatonin, which catalyzes the production of 2-hydroxymelatonin (2-OHM) from melatonin. The content of 2-hydroxymelatonin in plants is much higher than that of melatonin. So M2H may be a key enzyme in the metabolic pathway of melatonin. Method We conducted a systematic analysis of the M2H gene family in Gossypium hirsutum based on the whole genome sequence by integrating the structural characteristics, phylogenetic relationships, expression profile, and biological stress of the members of the Gossypium hirsutum M2H gene family. Result We identified 265 M2H genes in the whole genome of Gossypium hirsutum, which were divided into 7 clades (clades I-VII) according to phylogenetic analysis. Most M2H members in each group had similar motif composition and gene structure characteristics. More than half of GhM2H members contain ABA-responsive elements and MeJA-responsive elements. Under different stress conditions, the expression levels of the gene changed, indicating that GhM2H members were involved in the regulation of abiotic stress. Some genes in the GhM2H family were involved in regulating melatonin levels in cotton under salt stress, and some genes were regulated by exogenous melatonin. Conclusion This study is helpful to explore the function of GhM2H, the downstream metabolism gene of melatonin in cotton, and lay the foundation for better exploring the molecular mechanism of melatonin improving cotton's response to abiotic stress. Supplementary Information The online version contains supplementary material available at 10.1186/s40659-021-00358-y.
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Affiliation(s)
- Yuexin Zhang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Jing Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Xiugui Chen
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Xuke Lu
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Delong Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Junjuan Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Shuai Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Chao Chen
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Lixue Guo
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Waqar Afzal Malik
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Yapeng Fan
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Cun Rui
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Ruifeng Cui
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Qinqin Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Yuqian Lei
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China
| | - Wuwei Ye
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University Research Base, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, Henan, China.
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Yu R, Zuo T, Diao P, Fu J, Fan Y, Wang Y, Zhao Q, Ma X, Lu W, Li A, Wang R, Yan F, Pu L, Niu Y, Wuriyanghan H. Melatonin Enhances Seed Germination and Seedling Growth of Medicago sativa Under Salinity via a Putative Melatonin Receptor MsPMTR1. FRONTIERS IN PLANT SCIENCE 2021; 12:702875. [PMID: 34490006 PMCID: PMC8418131 DOI: 10.3389/fpls.2021.702875] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/21/2021] [Indexed: 05/26/2023]
Abstract
Alfalfa (Medicago sativa L.) is an important forage crop, and salt stress is a major limiting factor in its yield. Melatonin (MT) is a multi-regulatory molecule in plants. We showed that basal MT content was positively correlated with the salt tolerance degree of different alfalfa varieties. MT and its precursor 5-HT fully recovered seed germination while partially ameliorated seedling growth of salt-stressed alfalfa. The 5-HT showed some divergent effects from MT with regards to growth amelioration under salinity. Salt stress caused stunted plant growth in soil culture, while MT ameliorated it by elevating plant height, fresh weight, branching number, and chlorophyll content. Silencing of a putative MT receptor, MsPMTR1, which was shown to be membrane-localized, abolished the ameliorative effects of MT on salt-stressed alfalfa seedling growth, while overexpression of MsPMTR1 improved plant growth under salt stress. The RNA sequencing analysis showed that nine pathway genes were specifically induced by MT treatment compared with salt stress. These MT-responsive differentially expressed genes include basal metabolic pathway genes, such as "ribosome, elongation factor," "sugar and lipid metabolism," and "photosynthesis" and stress-related genes encoding "membrane integrity" related proteins, heat shock protein, peroxidase/oxidoreductase, and protease. Several abiotic stress response-related genes, such as DRE, ARF, HD-ZF, MYB, and REM were repressed by NaCl treatment while induced by MT treatment. In summary, we demonstrated the importance of MsPMTR1 in MT-mediated salt tolerance in alfalfa, and we also analyzed the regulatory mechanism of MT during alfalfa seed germination under salt stress.
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Affiliation(s)
- Ruonan Yu
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Tiantian Zuo
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Pengfei Diao
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jiabin Fu
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yanyan Fan
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
- Department of Medicine, Ordos Institute of Technology, Ordos, China
| | - Yue Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Qiqi Zhao
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xuesong Ma
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Wenting Lu
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Aoga Li
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Ru Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Fang Yan
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Li Pu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yiding Niu
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Hada Wuriyanghan
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
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Chen L, Lu B, Liu L, Duan W, Jiang D, Li J, Zhang K, Sun H, Zhang Y, Li C, Bai Z. Melatonin promotes seed germination under salt stress by regulating ABA and GA 3 in cotton (Gossypium hirsutum L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 162:506-516. [PMID: 33773227 DOI: 10.1016/j.plaphy.2021.03.029] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/15/2021] [Indexed: 05/21/2023]
Abstract
Although previous studies have found that melatonin can promote seed germination, the phytohormone regulation mechanism by which exogenous melatonin mediates salt tolerance during cotton seed germination is still largely unknown. The effects of melatonin on germination traits and physiological parameters of GXM9 cotton seeds (Gossypium hirsutum L.) under three salt stress treatments (CK, germination of seeds pretreated with water alone; S, germination of seeds pretreated in 150 mM NaCl under salt stress; SM, germination of seeds pretreated in 20 μM melatonin under 150 mM NaCl solution) in the laboratory was investigated. The results showed that salt stress (150 mM) inhibited cotton seed germination and endogenous melatonin accumulation, and pretreatment with 20 μM exogenous melatonin enhanced the cotton germination rate and hypocotyl length as well as the content of endogenous melatonin during seed germination. This suggests that exogenous melatonin promotes seed germination from a morphological perspective. The contents of starch, α-amylase (EC3.3.1.1), β-galactosidase (EC3.2.1.23), abscisic acid (ABA), and gibberellin (GA) were determined simultaneously. The results showed that the α-amylase and β-galactosidase contents in the cotton seeds decreased by 56.97% and 20.18%, respectively, under salt stress compared with the control, while the starch content increased by 11.53% compared with the control at day 7. The ABA content increased by 25.18% and GA content decreased by 27.99% under salt stress compared with the control at 24 h. When exogenous melatonin was applied to the cotton seeds, the content of α-amylase and β-galactosidase increased by 121.77% and 32.76%, respectively, whereas the starch contents decreased by 13.55% compared with the S treatment at day 7. Similarly, the ABA content increased by 12.20% and the GA content increased by 4.77% at 24 h. To elucidate the molecular mechanism by which melatonin promotes seed germination under salt stress, the effects of ABA- and GA-related genes on plant hormone signal transduction were analyzed by quantitative real-time PCR and RNA sequencing. The results indicated that melatonin regulated the expression of ABA and GA genes in the plant signal transduction pathway, induced embryo root development and seed germination, and alleviated dormancy. The expression of the ABA signaling gene GhABF2 was up-regulated and GhDPBF2 was down-regulated, and the expression of GA signaling genes (e.g., GhGID1C and GhGID1B) was up-regulated by melatonin. In conclusion, melatonin enhances salt tolerance in cotton seeds by regulating ABA and GA and by mediating the expression of hormone-related genes in plant hormone signal transduction. This should help us to explore the regulatory mechanisms of cotton resistance and provide a foundation for the cultivation of new varieties.
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Affiliation(s)
- Li Chen
- State Key Laboratory of North China Crop Improvement and Regulation/College of Life Science, Hebei Agricultural University, Baoding, 071001, China; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Bin Lu
- College of Landscape and Tourism, Hebei Agricultural University, Baoding 071001, China
| | - Liantao Liu
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Wenjing Duan
- State Key Laboratory of North China Crop Improvement and Regulation/College of Life Science, Hebei Agricultural University, Baoding, 071001, China; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Dan Jiang
- State Key Laboratory of North China Crop Improvement and Regulation/College of Life Science, Hebei Agricultural University, Baoding, 071001, China; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Jin Li
- State Key Laboratory of North China Crop Improvement and Regulation/College of Life Science, Hebei Agricultural University, Baoding, 071001, China; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Ke Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Hongchun Sun
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Yongjiang Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China
| | - Cundong Li
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China.
| | - Zhiying Bai
- State Key Laboratory of North China Crop Improvement and Regulation/College of Life Science, Hebei Agricultural University, Baoding, 071001, China; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, 071001, China.
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Yan H, Mao P. Comparative Time-Course Physiological Responses and Proteomic Analysis of Melatonin Priming on Promoting Germination in Aged Oat ( Avena sativa L.) Seeds. Int J Mol Sci 2021; 22:ijms22020811. [PMID: 33467472 PMCID: PMC7830126 DOI: 10.3390/ijms22020811] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/05/2021] [Accepted: 01/12/2021] [Indexed: 01/25/2023] Open
Abstract
Melatonin priming is an effective strategy to improve the germination of aged oat (Avena sativa L.) seeds, but the mechanism involved in its time-course responses has remained largely unknown. In the present study, the phenotypic differences, ultrastructural changes, physiological characteristics, and proteomic profiles were examined in aged and melatonin-primed seed (with 10 μM melatonin treatment for 12, 24, and 36 h). Thus, 36 h priming (T36) had a better remediation effect on aged seeds, reflecting in the improved germinability and seedlings, relatively intact cell ultrastructures, and enhanced antioxidant capacity. Proteomic analysis revealed 201 differentially abundant proteins between aged and T36 seeds, of which 96 were up-accumulated. In melatonin-primed seeds, the restoration of membrane integrity by improved antioxidant capacity, which was affected by the stimulation of jasmonic acid synthesis via up-accumulation of 12-oxo-phytodienoic acid reductase, might be a candidate mechanism. Moreover, the relatively intact ultrastructures enabled amino acid metabolism and phenylpropanoid biosynthesis, which were closely associated with energy generation through intermediates of pyruvate, phosphoenolpyruvate, fumarate, and α-ketoglutarate, thus providing energy, active amino acids, and secondary metabolites necessary for germination improvement of aged seeds. These findings clarify the time-course related pathways associated with melatonin priming on promoting the germination of aged oat seeds.
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Affiliation(s)
- Huifang Yan
- Forage Seed Laboratory, China Agricultural University, Beijing 100193, China;
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China
| | - Peisheng Mao
- Forage Seed Laboratory, China Agricultural University, Beijing 100193, China;
- Correspondence: ; Tel.: +86-010-62733311
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35
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Smolikova G, Gorbach D, Lukasheva E, Mavropolo-Stolyarenko G, Bilova T, Soboleva A, Tsarev A, Romanovskaya E, Podolskaya E, Zhukov V, Tikhonovich I, Medvedev S, Hoehenwarter W, Frolov A. Bringing New Methods to the Seed Proteomics Platform: Challenges and Perspectives. Int J Mol Sci 2020; 21:E9162. [PMID: 33271881 PMCID: PMC7729594 DOI: 10.3390/ijms21239162] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 12/14/2022] Open
Abstract
For centuries, crop plants have represented the basis of the daily human diet. Among them, cereals and legumes, accumulating oils, proteins, and carbohydrates in their seeds, distinctly dominate modern agriculture, thus play an essential role in food industry and fuel production. Therefore, seeds of crop plants are intensively studied by food chemists, biologists, biochemists, and nutritional physiologists. Accordingly, seed development and germination as well as age- and stress-related alterations in seed vigor, longevity, nutritional value, and safety can be addressed by a broad panel of analytical, biochemical, and physiological methods. Currently, functional genomics is one of the most powerful tools, giving direct access to characteristic metabolic changes accompanying plant development, senescence, and response to biotic or abiotic stress. Among individual post-genomic methodological platforms, proteomics represents one of the most effective ones, giving access to cellular metabolism at the level of proteins. During the recent decades, multiple methodological advances were introduced in different branches of life science, although only some of them were established in seed proteomics so far. Therefore, here we discuss main methodological approaches already employed in seed proteomics, as well as those still waiting for implementation in this field of plant research, with a special emphasis on sample preparation, data acquisition, processing, and post-processing. Thereby, the overall goal of this review is to bring new methodologies emerging in different areas of proteomics research (clinical, food, ecological, microbial, and plant proteomics) to the broad society of seed biologists.
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Affiliation(s)
- Galina Smolikova
- Department of Plant Physiology and Biochemistry, St. Petersburg State University; 199034 St. Petersburg, Russia; (G.S.); (T.B.); (S.M.)
| | - Daria Gorbach
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
| | - Elena Lukasheva
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
| | - Gregory Mavropolo-Stolyarenko
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
| | - Tatiana Bilova
- Department of Plant Physiology and Biochemistry, St. Petersburg State University; 199034 St. Petersburg, Russia; (G.S.); (T.B.); (S.M.)
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry; 06120 Halle (Saale), Germany
| | - Alena Soboleva
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry; 06120 Halle (Saale), Germany
| | - Alexander Tsarev
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry; 06120 Halle (Saale), Germany
| | - Ekaterina Romanovskaya
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
| | - Ekaterina Podolskaya
- Institute of Analytical Instrumentation, Russian Academy of Science; 190103 St. Petersburg, Russia;
- Institute of Toxicology, Russian Federal Medical Agency; 192019 St. Petersburg, Russia
| | - Vladimir Zhukov
- All-Russia Research Institute for Agricultural Microbiology; 196608 St. Petersburg, Russia; (V.Z.); (I.T.)
| | - Igor Tikhonovich
- All-Russia Research Institute for Agricultural Microbiology; 196608 St. Petersburg, Russia; (V.Z.); (I.T.)
- Department of Genetics and Biotechnology, St. Petersburg State University; 199034 St. Petersburg, Russia
| | - Sergei Medvedev
- Department of Plant Physiology and Biochemistry, St. Petersburg State University; 199034 St. Petersburg, Russia; (G.S.); (T.B.); (S.M.)
| | - Wolfgang Hoehenwarter
- Proteome Analytics Research Group, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany;
| | - Andrej Frolov
- Department of Biochemistry, St. Petersburg State University; 199178 St. Petersburg, Russia; (D.G.); (E.L.); (G.M.-S.); (A.S.); (A.T.); (E.R.)
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry; 06120 Halle (Saale), Germany
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36
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Role of Melatonin in Plant Tolerance to Soil Stressors: Salinity, pH and Heavy Metals. Molecules 2020; 25:molecules25225359. [PMID: 33212772 PMCID: PMC7696660 DOI: 10.3390/molecules25225359] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 12/25/2022] Open
Abstract
Melatonin (MT) is a pleiotropic molecule with diverse and numerous actions both in plants and animals. In plants, MT acts as an excellent promotor of tolerance against abiotic stress situations such as drought, cold, heat, salinity, and chemical pollutants. In all these situations, MT has a stimulating effect on plants, fomenting many changes in biochemical processes and stress-related gene expression. Melatonin plays vital roles as an antioxidant and can work as a free radical scavenger to protect plants from oxidative stress by stabilization cell redox status; however, MT can alleviate the toxic oxygen and nitrogen species. Beyond this, MT stimulates the antioxidant enzymes and augments antioxidants, as well as activates the ascorbate–glutathione (AsA–GSH) cycle to scavenge excess reactive oxygen species (ROS). In this review, we examine the recent data on the capacity of MT to alleviate the effects of common abiotic soil stressors, such as salinity, alkalinity, acidity, and the presence of heavy metals, reinforcing the general metabolism of plants and counteracting harmful agents. An exhaustive analysis of the latest advances in this regard is presented, and possible future applications of MT are discussed.
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Zhang J, Yao Z, Zhang R, Mou Z, Yin H, Xu T, Zhao D, Chen S. Genome-Wide Identification and Expression Profile of the SNAT Gene Family in Tobacco ( Nicotiana tabacum). Front Genet 2020; 11:591984. [PMID: 33193735 PMCID: PMC7652900 DOI: 10.3389/fgene.2020.591984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/30/2020] [Indexed: 11/13/2022] Open
Abstract
Melatonin plays key roles in development and confers stress tolerance to plants. Serotonin N-acetyltransferase (SNAT) is either the enzyme involved in the last step or the penultimate enzyme of phytomelatonin biosynthesis. To date, SNAT genes have not been characterized in tobacco (Nicotiana tabacum), an economically important plant species. The sequence of the Acetyltransf_7 conserved domain was used as a query sequence, and 12 NtSNAT candidate genes were in turn identified in the genome of tobacco. These NtSNATs could be divided into two groups based on the phylogenetic tree. NtSNAT1 and NtSNAT2 clustered together with the other typical SNATs, but the other 10 NtSNATs separately clustered outside of the typical SNATs. These 10 NtSNATs have only motif 1, whereas representative SNATs, such as NtSNAT1 and NtSNAT2 or a SNAT from cyanobacteria, have five motifs. In addition, NtSNAT1 and NtSNAT2 are highly homologous to the characterized OsSNAT1, 62.95 and 71.36%, respectively; however, the homology between the other 10 NtSNAT genes and OsSNAT1 is low. Concomitantly, it is hypothesized that NtSNAT1 and NtSNAT2 are the homolog of SNATs, whereas the other 10 candidates could be considered NtSNAT-like genes. Furthermore, both Nicotiana tomentosiformis and Nicotiana sylvestris, two diploid ancestor species of N. tabacum, have two SNAT candidates; therefore, it is speculated that gene rearrangement or deletion during the process of genomic stabilization after whole-genome duplication or polyploidization led to the preservation of NtSNAT1 and NtSNAT2 during the evolution of tobacco from the ancestral diploid to the allotetraploid. NtSNAT and NtSNAT-like genes were differentially expressed in all organs under different stress conditions, indicating that these genes potentially associated with plant growth and development and stress resistance. Under different stress conditions, the expression of NtSNAT1 was significantly upregulated upon high-temperature and cadmium stresses, while the expression of NtSNAT2 did not significantly increase under any of the tested stress treatments. These results provide valuable information for elucidating the evolutionary relationship of SNAT genes in tobacco and genetic resources for improving tobacco production in the future.
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Affiliation(s)
- Jiemei Zhang
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Life Sciences, Yunnan University, Kunming, China
| | - Zhengping Yao
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Life Sciences, Yunnan University, Kunming, China
| | - Renjun Zhang
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Life Sciences, Yunnan University, Kunming, China
| | - Zongmin Mou
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Honghui Yin
- Wenshan Branch of Yunnan Tobacco Company, Wenshan, China
| | - Tianyang Xu
- Wenshan Branch of Yunnan Tobacco Company, Wenshan, China
| | - Dake Zhao
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Suiyun Chen
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Ecology and Environmental Science, Yunnan University, Kunming, China
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Exogenous supplementation of melatonin alters representative organic acids and enzymes of respiratory cycle as well as sugar metabolism during arsenic stress in two contrasting indica rice cultivars. J Biotechnol 2020; 324:220-232. [PMID: 33068698 DOI: 10.1016/j.jbiotec.2020.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/08/2020] [Accepted: 10/11/2020] [Indexed: 12/22/2022]
Abstract
The objective of the present investigation was to understand the impact of exogenously applied melatonin on mitochondrial respiration and sugar metabolism in two contrasting rice cultivars, viz., Khitish (arsenic-susceptible) and Muktashri (arsenic-tolerant) under arsenic-stress. Melatonin effectively restored the level of organic acids like pyruvic acid, malic acid and more particularly citric acid by 33 % in Khitish which were lowered during arsenic-stress, whereas their levels were further elevated in Muktashri to provide energy for defence against arsenic-induced injury. Arsenic-exposure led to a significant inhibition in enzyme activities as well as corresponding transcript level of key respiratory enzymes, viz., pyruvate dehydrogenase, citrate synthase, isocitrate dehydrogenase, succinate dehydrogenase and malate dehydrogenase, intriguingly more prominently in case of Khitish. Conversely, melatonin supplementation, irrespective of cultivars, considerably improved the activity of the above enzymes and corresponding gene expressions during stress, indicating acceleration in the rate of Krebs cycle. Melatonin supplementation also stimulated the accumulation of total soluble sugars by 62 % and 25 %, reducing sugars by 50 % and 44 % and non-reducing sugars by 75 % and 14 % in Khitish and Muktashri respectively, concomitant with higher activities of acid invertase, sucrose synthase and sucrose phosphate synthase enzymes, along with the expression of corresponding genes. Enhanced starch accumulation via regulation of alpha amylase and starch phosphorylase activities and gene expression, by melatonin also contributed towards better stress tolerance. Overall, this work illustrated the efficacy of melatonin in the regulation of representative organic acids and enzymes of respiratory cycle along with starch and sugar metabolism in rice cultivars under arsenic toxicity.
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Khan TA, Fariduddin Q, Nazir F, Saleem M. Melatonin in business with abiotic stresses in plants. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2020; 26:1931-1944. [PMID: 33088040 PMCID: PMC7548266 DOI: 10.1007/s12298-020-00878-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 08/26/2020] [Accepted: 09/01/2020] [Indexed: 05/27/2023]
Abstract
Melatonin (MEL) is the potential biostimulator molecule, governing multiple range of growth and developmental processes in plants, particularly under different environmental constrains. Mainly, its role is considered as an antioxidant molecule that copes with oxidative stress through scavenging of reactive oxygen species and modulation of stress related genes. It also enhances the antioxidant enzyme activities and thus helps in regulating the redox hemostasis in plants. Apart from its broad range of antioxidant functions, it is involved in the regulation of various physiological processes such as germination, lateral root growth and senescence in plants. Moreover this multifunctional molecule takes much interest due to its recent identification and characterization of receptorCandidate G-protein-Coupled Receptor 2/Phytomelatonin receptor(CAND2/PMTR1) in Arabidopsis thaliana. In this compiled work, different aspects of melatonin in plants such as melatonin biosynthesis and detection in plants, signaling pathway, modulation of stress related genes and physiological role of melatonin under different environmental stresses have been dissected in detail.
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Affiliation(s)
- Tanveer Ahmad Khan
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002 India
| | - Qazi Fariduddin
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002 India
| | - Faroza Nazir
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002 India
| | - Mohd Saleem
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002 India
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Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of Brassica napus L. Plants. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10081186] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Salinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K+/Na+ homeostasis and preventing the salinity stress mediated oxidative damage and photosynthetic inhibition was studied in two rapeseed cultivars. We found that 50 µM MT treatment imparted a very prominent impact on growth, metabolism of antioxidants, photosynthesis, osmolytes, secondary metabolites, yield, and fatty acids composition. Days required for appearance of first flower and 50% flowering were decreased by MT application. Exogenous MT treatment effectively decreased the oxidative damage by significantly declining the generation of superoxide and hydrogen peroxide under saline and non-saline conditions, as reflected in lowered lipid peroxidation, heightened membrane stability, and up-regulation of antioxidant enzymes (catalase, superoxide dismutase, and ascorbate peroxidase). Furthermore, MT application enhanced the chlorophyll content, photosynthetic rate, relative water content, K+/Na+ homeostasis, soluble sugars, and proline content. Moreover, MT application obviously improved the oil quality of rapeseed cultivars by reducing glucosinolates, saturated fatty acids (palmitic and arachidic acids), and enhancing unsaturated fatty acids (linolenic and oleic acids except erucic acid were reduced). Yield related-traits such as silique traits, seed yield per plant, 1000 seeds weight, seed oil content, and yield biomass traits were enhanced by MT application. The anatomical analysis of leaf and stem showed that stomatal and xylem vessels traits are associated with sodium chloride tolerance, yield, and seed fatty acid composition. These results suggest the supportive role of MT on the quality and quantity of rapeseed oil yield.
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Li D, Batchelor WD, Zhang D, Miao H, Li H, Song S, Li R. Analysis of melatonin regulation of germination and antioxidant metabolism in different wheat cultivars under polyethylene glycol stress. PLoS One 2020; 15:e0237536. [PMID: 32790719 PMCID: PMC7425870 DOI: 10.1371/journal.pone.0237536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 07/28/2020] [Indexed: 12/15/2022] Open
Abstract
Melatonin is effective in enhancing various abiotic stress resistances of plants. However, its underlying mechanisms in drought-resistance in winter wheat (Triticum aestivum L.) is not clear. The goal of this work was to investigate the effect of melatonin on seed germination and to evaluate leaf antioxidant physiology for two wheat varieties. Experiments included 20% PEG, melatonin plus 20% PEG and a control using two contrasting wheat varieties (JM22– drought sensitive and HG35– drought resistant). Melatonin levels were 0, 1, 10, 100 and 300 μmol L-1. Results revealed that 300 μmol L-1 of melatonin alleviated the negative effect of water stress on germination and increased radicle length, radicle number, and plumule length of the germinated seeds. Principal component analysis showed a significant change in amino acid content during germination and this change was dependent on melatonin concentration and the variety. Lysine (Lys) content in wheat seeds under the PEG plus 300 μmol L-1 melatonin treatment increased compared with that of the seeds under PEG alone. There was a significant and positive correlation between Lys content and morphological index of germination. During seedling growth, soluble protein was involved in osmotic adjustment and superoxide dismutase (SOD) activity was increased to mitigate the damage in the cytomembrane of JM 22 leaf under 300 μmol L-1 melatonin plus PEG treatment. The effect of melatonin was dependent on SOD activity increasing significantly for HG35—a drought resistant variety. The results of this work lays a foundation for further studies to determine if melatonin can be economically used to mitigate the impact of dry planting conditions on wheat productivity in North China Plain.
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Affiliation(s)
- Dongxiao Li
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - William D. Batchelor
- Biosystems Engineering Department, Auburn University, Auburn, Alabama, United States of America
| | - Di Zhang
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - Hanxiao Miao
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - Hongye Li
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - Shijia Song
- Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Ruiqi Li
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
- * E-mail:
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Hu W, Cao Y, Loka DA, Harris-Shultz KR, Reiter RJ, Ali S, Liu Y, Zhou Z. Exogenous melatonin improves cotton (Gossypium hirsutum L.) pollen fertility under drought by regulating carbohydrate metabolism in male tissues. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 151:579-588. [PMID: 32330838 DOI: 10.1016/j.plaphy.2020.04.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 05/23/2023]
Abstract
Although exogenous melatonin can enhance the drought tolerance of plants, reports on the role of melatonin in drought tolerance in male reproductive organs are limited. To explore this, a pot experiment was conducted with cotton cultivar Yuzaomian 9110 to study the effects of exogenous melatonin (100, 200, and 1000 μM) on male fertility and related carbohydrate metabolism in anther under drought. Results showed that drought inhibited the translocation of carbon assimilates to anthers, however, melatonin application (100 and 200 μM) significantly improved the translocation of carbon assimilates to drought-stressed anthers. Drought reduced the deposition of starch, the hydrolysis of sucrose into hexoses, the generation of adenosine triphosphate (ATP) in anthers, restricting pollen viability and germination. Nevertheless, the appropriate melatonin concentrations (100 and 200 μM) increased the starch accumulation by enhancing ADP-glucose pyrophosphorylase and soluble starch synthases activities and accelerated the hydrolysis of sucrose by increasing sucrose synthase, acid and alkaline invertases activities in drought-stressed anthers. Appropriate melatonin concentrations (100 and 200 μM) also could help to generate more ATP for reproductive activities of drought-stressed anthers, finally increasing the pollen viability and germination of drought-stressed plants. These findings suggest that drought inhibited male fertility of cotton, but a precise melatonin application could regulate the carbohydrate balance of drought-stressed anthers to improve male fertility. This is the first report demonstrating the important role of exogenous melatonin in improving male fertility under drought conditions by regulating the carbohydrate metabolism in the male part of cotton.
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Affiliation(s)
- Wei Hu
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production (JCIC-MCP), Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yuting Cao
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production (JCIC-MCP), Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Dimitra A Loka
- Institute of Industrial and Forage Crops, Hellenic Agricultural Organization, Larisa, 41335, Greece
| | - Karen R Harris-Shultz
- Crop Genetics and Breeding Research Unit, Agricultural Research Service-United States Department of Agriculture, Tifton, GA, 31793, USA
| | - Russel J Reiter
- Department of Cellular & Structural Biology, University of Texas, San Antonio, TX, 78229, USA
| | - Saif Ali
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production (JCIC-MCP), Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yu Liu
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production (JCIC-MCP), Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Zhiguo Zhou
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production (JCIC-MCP), Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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Yan H, Jia S, Mao P. Melatonin Priming Alleviates Aging-Induced Germination Inhibition by Regulating β-oxidation, Protein Translation, and Antioxidant Metabolism in Oat ( Avena sativa L.) Seeds. Int J Mol Sci 2020; 21:ijms21051898. [PMID: 32164355 PMCID: PMC7084597 DOI: 10.3390/ijms21051898] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 12/20/2022] Open
Abstract
Although melatonin has been reported to play an important role in regulating metabolic events under adverse stresses, its underlying mechanisms on germination in aged seeds remain unclear. This study was conducted to investigate the effect of melatonin priming (MP) on embryos of aged oat seeds in relation to germination, ultrastructural changes, antioxidant responses, and protein profiles. Proteomic analysis revealed, in total, 402 differentially expressed proteins (DEPs) in normal, aged, and aged + MP embryos. The downregulated DEPs in aged embryos were enriched in sucrose metabolism, glycolysis, β-oxidation of lipid, and protein synthesis. MP (200 μM) turned four downregulated DEPs into upregulated DEPs, among which, especially 3-ketoacyl-CoA thiolase-like protein (KATLP) involved in the β-oxidation pathway played a key role in maintaining TCA cycle stability and providing more energy for protein translation. Furthermore, it was found that MP enhanced antioxidant capacity in the ascorbate-glutathione (AsA-GSH) system, declined reactive oxygen species (ROS), and improved cell ultrastructure. These results indicated that the impaired germination and seedling growth of aged seeds could be rescued to a certain level by melatonin, predominantly depending on β-oxidation, protein translation, and antioxidant protection of AsA-GSH. This work reveals new insights into melatonin-mediated mechanisms from protein profiles that occur in embryos of oat seeds processed by both aging and priming.
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Affiliation(s)
- Huifang Yan
- Forage Seed Laboratory, China Agricultural University, Beijing 100193, China; (H.Y.); (S.J.)
- Grassland Agri-husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China
| | - Shangang Jia
- Forage Seed Laboratory, China Agricultural University, Beijing 100193, China; (H.Y.); (S.J.)
- Key Laboratory of Pratacultural Science, Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Peisheng Mao
- Forage Seed Laboratory, China Agricultural University, Beijing 100193, China; (H.Y.); (S.J.)
- Key Laboratory of Pratacultural Science, Beijing Municipality, China Agricultural University, Beijing 100193, China
- Correspondence: ; Tel.: +86-010-62733311
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Melatonin Accumulation in Sweet Cherry and Its Influence on Fruit Quality and Antioxidant Properties. Molecules 2020; 25:molecules25030753. [PMID: 32050515 PMCID: PMC7037775 DOI: 10.3390/molecules25030753] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/02/2020] [Accepted: 02/03/2020] [Indexed: 02/03/2023] Open
Abstract
Although the effects of melatonin on plant abiotic and biotic stress resistance have been explored in recent decades, the accumulation of endogenous melatonin in plants and its influence on fruit quality remains unclear. In the present study, melatonin accumulation levels and the expression profiles of five synthesis genes were investigated during fruit and leaf development in sweet cherry (Prunus avium L.). Melatonin was strongly accumulated in young fruits and leaves, then decreased steadily with maturation. Transcript levels of PacTDC and PacSNAT were highly correlated with melatonin content in both fruit and leaves, indicating their importance in melatonin accumulation. Furthermore, application of 50 and 100 μmol·L-1 of melatonin to leaves had a greater influence on fruit quality than treatments applied to fruits, by significantly improving fruit weight, soluble solids content, and phenolic content including total phenols, flavanols, total anthocyanins, and ascorbic acid. Meanwhile, melatonin application promoted the antioxidant capacity of fruit assayed by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azinobis (3-ethylben zothiazoline-6-sulfonic acid) (ABTS), and ferric reducing antioxidant power (FRAP). These results provide insights into the physiological and molecular mechanisms underlying melatonin metabolism of sweet cherry.
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Chen L, Liu L, Lu B, Ma T, Jiang D, Li J, Zhang K, Sun H, Zhang Y, Bai Z, Li C. Exogenous melatonin promotes seed germination and osmotic regulation under salt stress in cotton (Gossypium hirsutum L.). PLoS One 2020; 15:e0228241. [PMID: 32004326 PMCID: PMC6994006 DOI: 10.1371/journal.pone.0228241] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 01/11/2020] [Indexed: 11/18/2022] Open
Abstract
Melatonin (MT; N-acetyI-5-methoxytryptamine) is an amine hormone involved in abiotic stress resistance. Previous studies have confirmed that melatonin can promote seed germination, mediate physiological regulation mechanisms, and stimulate crop growth under stress. However, the osmotic regulation mechanism by which exogenous melatonin mediates salt tolerance in cotton is still largely unknown. To investigate the effect of salt stress on melatonin concentration in germinating cotton seeds, we analyzed melatonin content over time during seed germination under different treatments. Melatonin content reached its minimum at day 6, while cotton germination rates peaked at day 6, indicating melatonin content and seed germination are correlated. Then we investigated the effects of 10-100 μM melatonin treatments on membrane lipid peroxides and osmotic adjustment substances during cotton seed germination under salt stress. Salt stress led to electrolyte leakage (EL) as well as accumulations of hydrogen peroxide (H2O2), malondialdehyde (MDA), organic osmotic substances (i.e., proline, soluble sugars), and inorganic osmotic substances (i.e., Na+, Cl-). Meanwhile, the contents of melatonin, soluble proteins, and K+ as well as the K+/Na+ balance decreased, indicating that salt stress inhibited melatonin synthesis and damaged cellular membranes, seriously affecting seed germination. However, melatonin pretreatment at different concentrations alleviated the adverse effects of salt stress on cotton seeds and reduced EL as well as the contents of H2O2, MDA, Na+, and Cl-. The exogenous application of melatonin also promoted melatonin, soluble sugar, soluble proteins, proline, and K+/Na+ contents under salt stress. These results demonstrate that supplemental melatonin can effectively ameliorate the repression of cotton seed germination by enhancing osmotic regulating substances and adjusting ion homeostasis under salt stress. Thus, melatonin may potentially be used to protect cotton seeds from salt stress, with the 20 μM melatonin treatment most effectively promoting cotton seed germination and improving salt stress tolerance.
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Affiliation(s)
- Li Chen
- College of Life Science, Hebei Agricultural University, Baoding, China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
| | - Liantao Liu
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Bin Lu
- College of Landscape and Tourism, Hebei Agricultural University, Baoding, China
| | - Tongtong Ma
- College of Life Science, Hebei Agricultural University, Baoding, China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
| | - Dan Jiang
- College of Life Science, Hebei Agricultural University, Baoding, China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
| | - Jin Li
- College of Life Science, Hebei Agricultural University, Baoding, China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
| | - Ke Zhang
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Hongchun Sun
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Yongjiang Zhang
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Zhiying Bai
- College of Life Science, Hebei Agricultural University, Baoding, China
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- * E-mail: (ZB); (CL)
| | - Cundong Li
- Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei, China
- College of Agronomy, Hebei Agricultural University, Baoding, China
- * E-mail: (ZB); (CL)
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Xiao X, Lv J, Xie J, Feng Z, Ma N, Li J, Yu J, Calderón-Urrea A. Transcriptome Analysis Reveals the Different Response to Toxic Stress in Rootstock Grafted and Non-Grafted Cucumber Seedlings. Int J Mol Sci 2020; 21:ijms21030774. [PMID: 31991638 PMCID: PMC7037640 DOI: 10.3390/ijms21030774] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 11/20/2022] Open
Abstract
Autotoxicity of root exudates is one of the main reasons for consecutive monoculture problem (CMP) in cucumber under greenhouse cultivation. Rootstock grafting may improve the tolerance of cucumber plants to autotoxic stress. To verify the enhanced tolerance to autotoxic stress and illuminate relevant molecular mechanism, a transcriptomic comparative analysis was performed between rootstock grafted (RG) and non-grafted (NG) cucumber plants by a simulation of exogenous cinnamic acid (CA). The present study confirmed that relatively stable plant growth, biomass accumulation, chlorophyll content, and photosynthesis was observed in RG than NG under CA stress. We identified 3647 and 2691 differentially expressed genes (DEGs) in NG and RG cucumber plants when compared to respective control, and gene expression patterns of RNA-seq was confirmed by qRT-PCR. Functional annotations revealed that DEGs response to CA stress were enriched in pathways of plant hormone signal transduction, MAPK signaling pathway, phenylalanine metabolism, and plant-pathogen interaction. Interestingly, the significantly enriched pathway of photosynthesis-related, carbon and nitrogen metabolism only identified in NG, and most of DEGs were down-regulated. However, most of photosynthesis, Calvin cycle, glycolysis, TCA cycle, and nitrogen metabolism-related DEGs exhibited not or slightly down-regulated in RG. In addition, several stress-related transcription factor families of AP2/ERF, bHLH, bZIP, MYB. and NAC were uniquely triggered in the grafted cucumbers. Overall, the results of this study suggest that rootstock grafting improve the tolerance of cucumber plants to autotoxic stress by mediating down-regulation of photosynthesis, carbon, and nitrogen metabolism-related DEGs and activating the function of stress-related transcription factor. The transcriptome dataset provides an extensive sequence resource for further studies of autotoxic mechanism at molecular level.
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Affiliation(s)
- Xuemei Xiao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Zhi Feng
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Ning Ma
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Ju Li
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
- Correspondence: ; Tel.: +86-0931-7632188
| | - Alejandro Calderón-Urrea
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China;
- Department of Biology, College of Science and Mathematics, California State University, Fresno, CA 97340, USA
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Lai Y, Zhang D, Wang J, Wang J, Ren P, Yao L, Si E, Kong Y, Wang H. Integrative Transcriptomic and Proteomic Analyses of Molecular Mechanism Responding to Salt Stress during Seed Germination in Hulless Barley. Int J Mol Sci 2020; 21:ijms21010359. [PMID: 31935789 PMCID: PMC6981547 DOI: 10.3390/ijms21010359] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/03/2020] [Accepted: 01/03/2020] [Indexed: 12/19/2022] Open
Abstract
Hulless barley (Hordeum vulgare L. var. nudum) is one of the most important crops in the Qinghai-Tibet Plateau. Soil salinity seriously affects its cultivation. To investigate the mechanism of salt stress response during seed germination, two contrasting hulless barley genotypes were selected to first investigate the molecular mechanism of seed salinity response during the germination stage using RNA-sequencing and isobaric tags for relative and absolute quantitation technologies. Compared to the salt-sensitive landrace lk621, the salt-tolerant one lk573 germinated normally under salt stress. The changes in hormone contents also differed between lk621 and lk573. In lk573, 1597 differentially expressed genes (DEGs) and 171 differentially expressed proteins (DEPs) were specifically detected at 4 h after salt stress, and correspondingly, 2748 and 328 specifically detected at 16 h. Most specific DEGs in lk573 were involved in response to oxidative stress, biosynthetic process, protein localization, and vesicle-mediated transport, and most specific DEPs were assigned to an oxidation-reduction process, carbohydrate metabolic process, and protein phosphorylation. There were 96 genes specifically differentially expressed at both transcriptomic and proteomic levels in lk573. These results revealed the molecular mechanism of salt tolerance and provided candidate genes for further study and salt-tolerant improvement in hulless barley.
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Affiliation(s)
- Yong Lai
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (Y.L.); (D.Z.)
| | - Dangquan Zhang
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (Y.L.); (D.Z.)
| | - Jinmin Wang
- College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Juncheng Wang
- Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou 730070, China
| | - Panrong Ren
- Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
- State Key Laboratory of Plant Genomics, National Centre for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Lirong Yao
- Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou 730070, China
| | - Erjing Si
- Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
| | - Yuhua Kong
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (Y.L.); (D.Z.)
- Correspondence: (Y.K.); (H.W.)
| | - Huajun Wang
- Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou 730070, China
- Gansu Key Lab of Crop Improvement and Germplasm Enhancement, Lanzhou 730070, China
- Correspondence: (Y.K.); (H.W.)
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Madigan AP, Egidi E, Bedon F, Franks AE, Plummer KM. Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress. Front Microbiol 2019; 10:2616. [PMID: 31849848 PMCID: PMC6901394 DOI: 10.3389/fmicb.2019.02616] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/28/2019] [Indexed: 12/29/2022] Open
Abstract
An extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that affect yield and crop quality. However, there are no reports regarding the effects of melatonin on soil microbial communities under abiotic stress, despite the importance of microbes for plant root health and function. Three agricultural soils associated with different land usage histories (pasture, canola or wheat) were placed under abiotic stress by cadmium (100 or 280 mg kg-1 soil) or salt (4 or 7 g kg-1 soil) and treated with melatonin (0.2 and 4 mg kg-1 soil). Automated Ribosomal Intergenic Spacer Analysis (ARISA) was used to generate Operational Taxonomic Units (OTU) for microbial community analysis in each soil. Significant differences in richness (α diversity) and community structures (β diversity) were observed between bacterial and fungal assemblages across all three soils, demonstrating the effect of melatonin on soil microbial communities under abiotic stress. The analysis also indicated that the microbial response to melatonin is governed by the type of soil and history. The effects of melatonin on soil microbes need to be regarded in potential future agricultural applications.
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Affiliation(s)
- Andrew P. Madigan
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Melbourne, VIC, Australia
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, Australia
| | - Eleonora Egidi
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
| | - Frank Bedon
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Melbourne, VIC, Australia
| | - Ashley E. Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, Australia
- Centre for Future Landscapes, School of Life Sciences, La Trobe University, Melbourne, VIC, Australia
| | - Kim M. Plummer
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Melbourne, VIC, Australia
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Su X, Xin L, Li Z, Zheng H, Mao J, Yang Q. Physiology and transcriptome analyses reveal a protective effect of the radical scavenger melatonin in aging maize seeds. Free Radic Res 2019; 52:1094-1109. [PMID: 29722273 DOI: 10.1080/10715762.2018.1472378] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
To determine the role of melatonin in aging maize seeds (Zea mays L.), we investigated the physiological characteristics and performance analysis of the transcriptome after applying melatonin to maize seeds as a response to aging. In this study, we demonstrated that applying exogenous melatonin alleviated aging-induced oxidative damage, improved the activity of aging seeds, promoted growth of the germ and radicle, enhanced antioxidant enzyme activity, and reduced membrane lipid peroxidation. In addition, transcriptome sequencing revealed that various metabolic processes were induced by exogenous melatonin application in aging maize seeds, including hormone signal transduction, cellular processes, carbohydrate metabolism, secondary metabolites, and amino acid metabolism. In summary, the findings provide a more comprehensive understanding for analysing the protective effect of melatonin in aging maize seeds.
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Affiliation(s)
- Xiaoyu Su
- a College of Agronomy , Henan Agricultural University , Zhengzhou , China
| | - Longfei Xin
- a College of Agronomy , Henan Agricultural University , Zhengzhou , China
| | - Zhuo Li
- a College of Agronomy , Henan Agricultural University , Zhengzhou , China
| | - Huifang Zheng
- a College of Agronomy , Henan Agricultural University , Zhengzhou , China
| | - Jun Mao
- a College of Agronomy , Henan Agricultural University , Zhengzhou , China
| | - Qinghua Yang
- a College of Agronomy , Henan Agricultural University , Zhengzhou , China
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Melatonin as a Chemical Substance or as Phytomelatonin Rich-Extracts for Use as Plant Protector and/or Biostimulant in Accordance with EC Legislation. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9100570] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Melatonin (N-acetyl-5-methoxytryptamine) is a ubiquitous molecule present in animals and plants, and also in bacteria and fungi. In plants, it has an important regulatory and protective role in the face of different stress situations in which it can be involved, mainly due to its immobility. Both in the presence of biotic and abiotic stressors, melatonin exerts protective action in which, through significant changes in gene expression, it activates a stress tolerance response. Its anti-stress role, along with other outstanding functions, suggests its possible use in active agricultural management. This review establishes considerations that are necessary for its possible authorization. The particular characteristics of this substance and its categorization as plant biostimulant are discussed, and also the different legal aspects within the framework of the European Community. The advantages and disadvantages are also described of two of its possible applications, as a plant protector or biostimulant, in accordance with legal provisions.
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