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Liu Z, Sun L, Liu Z, Li X. Effect of exogenous melatonin on growth and antioxidant system of pumpkin seedlings under waterlogging stress. PeerJ 2024; 12:e17927. [PMID: 39210917 PMCID: PMC11361259 DOI: 10.7717/peerj.17927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 07/24/2024] [Indexed: 09/04/2024] Open
Abstract
Melatonin regulates defense responses in plants under environmental stress. This study aimed to explore the impact of exogenous melatonin on the phenotype and physiology of 'BM1' pumpkin seedlings subjected to waterlogging stress. Waterlogging stress was induced following foliar spraying of melatonin at various concentrations (CK, 0, 10, 100, 200, and 300 μmol·L-1). The growth parameters, malondialdehyde (MDA) content, antioxidant enzyme activity, osmoregulatory substance levels, and other physiological indicators were assessed to elucidate the physiological mechanisms underlying the role of exogenous melatonin in mitigating waterlogging stress in pumpkin seedlings. The results indicate that pumpkin seedlings exhibit waterlogging symptoms, such as leaf wilting, water loss, edge chlorosis, and fading, under waterlogging stress conditions. Various growth indicators of the seedlings, including plant height, stem diameter, root length, fresh and dry weight, and leaf chlorophyll content, were significantly reduced. Moreover, the MDA content in leaves and roots increased significantly, along with elevated activities of superoxide dismutase, catalase, peroxidase, and soluble protein contents. When different concentrations of melatonin were sprayed on the leaves post waterlogging stress treatment, pumpkin seedlings showed varying degrees of recovery, with the 100 μmol·L-1 treatment displaying the best growth status and plant morphological phenotypes. There were no significant differences compared to the control group. Seedling growth indicators, chlorophyll content, root activity, antioxidant enzyme activities, soluble protein content, and osmotic adjustment substance content all increased to varying degrees with increasing melatonin concentration, peaking at 100 μmol·L-1. Melatonin also reduced membrane damage caused by oxidative stress and alleviated osmotic imbalance. Exogenous melatonin enhanced the activities of antioxidant enzymes and systems involved in scavenging reactive oxygen species, with 100 μmol·L-1 as the optimal concentration. These findings underscore the crucial role of exogenous melatonin in alleviating waterlogging stress in pumpkins. The findings of this study offer a theoretical framework and technical assistance for cultivating waterlogging-resistant pumpkins in practical settings. Additionally, it establishes a theoretical groundwork for the molecular breeding of pumpkins with increased tolerance to waterlogging.
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Affiliation(s)
- Zhenyu Liu
- College of Horticulture and Landscape, Henan Institute of Science and Technology, Xinxiang, Henan, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, Henan, Xinxiang, China
| | - Li Sun
- College of Horticulture and Landscape, Henan Institute of Science and Technology, Xinxiang, Henan, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, Henan, Xinxiang, China
| | - Zhenwei Liu
- College of Horticulture and Landscape, Henan Institute of Science and Technology, Xinxiang, Henan, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, Henan, Xinxiang, China
| | - Xinzheng Li
- College of Horticulture and Landscape, Henan Institute of Science and Technology, Xinxiang, Henan, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, Henan, Xinxiang, China
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2
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Khan M, Hussain A, Yun BW, Mun BG. Melatonin: The Multifaceted Molecule in Plant Growth and Defense. Int J Mol Sci 2024; 25:6799. [PMID: 38928504 PMCID: PMC11203645 DOI: 10.3390/ijms25126799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 06/14/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Melatonin (MEL), a hormone primarily known for its role in regulating sleep and circadian rhythms in animals, has emerged as a multifaceted molecule in plants. Recent research has shed light on its diverse functions in plant growth and defense mechanisms. This review explores the intricate roles of MEL in plant growth and defense responses. MEL is involved in plant growth owing to its influence on hormone regulation. MEL promotes root elongation and lateral root formation and enhances photosynthesis, thereby promoting overall plant growth and productivity. Additionally, MEL is implicated in regulating the circadian rhythm of plants, affecting key physiological processes that influence plant growth patterns. MEL also exhibits antioxidant properties and scavenges reactive oxygen species, thereby mitigating oxidative stress. Furthermore, it activates defense pathways against various biotic stressors. MEL also enhances the production of secondary metabolites that contribute to plant resistance against environmental changes. MEL's ability to modulate plant response to abiotic stresses has also been extensively studied. It regulates stomatal closure, conserves water, and enhances stress tolerance by activating stress-responsive genes and modulating signaling pathways. Moreover, MEL and nitric oxide cooperate in stress responses, antioxidant defense, and plant growth. Understanding the mechanisms underlying MEL's actions in plants will provide new insights into the development of innovative strategies for enhancing crop productivity, improving stress tolerance, and combating plant diseases. Further research in this area will deepen our knowledge of MEL's intricate functions and its potential applications in sustainable agriculture.
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Affiliation(s)
- Murtaza Khan
- Department of Horticulture and Life Science, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Adil Hussain
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
- Department of Entomology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Byung-Wook Yun
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Bong-Gyu Mun
- Department of Environmental and Biological Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea
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3
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Munir R, Yasin MU, Afzal M, Jan M, Muhammad S, Jan N, Nana C, Munir F, Iqbal H, Tawab F, Gan Y. Melatonin alleviated cadmium accumulation and toxicity by modulating phytohormonal balance and antioxidant metabolism in rice. CHEMOSPHERE 2024; 346:140590. [PMID: 37914045 DOI: 10.1016/j.chemosphere.2023.140590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/22/2023] [Accepted: 10/29/2023] [Indexed: 11/03/2023]
Abstract
Cadmium (Cd) contamination is an eminent dilemma that jeopardizes global food safety and security, especially through its phytotoxicity in rice; one of the most edible crops. Melatonin (MET) has emerged as a protective phytohormone in stress conditions, but the defensive role and underlying mechanisms of MET against Cd toxicity in rice still remain unclear. To fulfill this knowledge gap, the present study is to uncover the key mechanisms for MET-mediated Cd-stress tolerance in rice. Cd toxicity significantly reduced growth by hindering the process of photosynthesis, cellular redox homeostasis, phytohormonal imbalance, and ultrastructural damages. Contrarily, MET supplementation considerably improved growth attributes, photosynthetic efficiency, and cellular ultrastructure as measured by gas exchange elements, chlorophyll content, reduced Cd accumulation, and ultrastructural analysis via transmission electron microscopy (TEM). MET treatment significantly reduced Cd accumulation (39.25%/31.58%), MDA (25.87%/19.45%), H2O2 (17.93%/9.56%), and O2 (29.11%/27.14%) levels in shoot/root tissues, respectively, when compared with Cd treatment. More importantly, MET manifested association with stress responsive phytohormones (ABA and IAA) and boosted the defense mechanisms of plant by enhancing the activities of ROS-scavenging antioxidant enzymes (SOD; superoxide dismutase, POD; peroxidase, CAT; catalase, APX; ascorbate peroxidase) and as well as regulating the key stress-responsive genes (OsSOD1, OsPOD1, OsCAT2, OsAPX1), thereby reinstate cellular membrane integrity and confer tolerance to ultrastructural damages under Cd-induced phytotoxicity. Overall, our findings emphasized the potential of MET as a long-term and cost-effective approach to Cd remediation in paddy soils, which can pave the way for a healthier and more environmentally conscious agricultural sector.
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Affiliation(s)
- Raheel Munir
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Muhammad Umair Yasin
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Muhammad Afzal
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Mehmood Jan
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Sajid Muhammad
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Nazia Jan
- Laboratory of Germplasm Innovation and Molecular Breeding, Institute of Vegetable Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Chen Nana
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Faisal Munir
- Institute of Biotechnology and Genetic Engineering, The University of Agriculture, Peshawar, 25130, Pakistan
| | - Hamza Iqbal
- Institute of Biotechnology and Genetic Engineering, The University of Agriculture, Peshawar, 25130, Pakistan
| | - Faiza Tawab
- Department of Botany, Shaheed Benazir Bhutto Women University, Peshawar, 25000, Pakistan
| | - Yinbo Gan
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, 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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5
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Effect of exogenous melatonin on the isoflavone content and antioxidant properties of soybean sprouts. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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6
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Raza A, Charagh S, García-Caparrós P, Rahman MA, Ogwugwa VH, Saeed F, Jin W. Melatonin-mediated temperature stress tolerance in plants. GM CROPS & FOOD 2022; 13:196-217. [PMID: 35983948 PMCID: PMC9397135 DOI: 10.1080/21645698.2022.2106111] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Global climate changes cause extreme temperatures and a significant reduction in crop production, leading to food insecurity worldwide. Temperature extremes (including both heat and cold stresses) is one of the most limiting factors in plant growth and development and severely affect plant physiology, biochemical, and molecular processes. Biostimulants like melatonin (MET) have a multifunctional role that acts as a "defense molecule" to safeguard plants against the noxious effects of temperature stress. MET treatment improves plant growth and temperature tolerance by improving several defense mechanisms. Current research also suggests that MET interacts with other molecules, like phytohormones and gaseous molecules, which greatly supports plant adaptation to temperature stress. Genetic engineering via overexpression or CRISPR/Cas system of MET biosynthetic genes uplifts the MET levels in transgenic plants and enhances temperature stress tolerance. This review highlights the critical role of MET in plant production and tolerance against temperature stress. We have documented how MET interacts with other molecules to alleviate temperature stress. MET-mediated molecular breeding would be great potential in helping the adverse effects of temperature stress by creating transgenic plants.
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Affiliation(s)
- Ali Raza
- College of Agriculture, Oil Crops Research Institute, Fujian Agriculture and Forestry University (FAFU), Fuzhou, Fujian, China
| | - Sidra Charagh
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Hangzhou, Zhejiang, China
| | - Pedro García-Caparrós
- Agronomy Department of Superior School Engineering, University of Almería, Almería, Spain
| | - Md Atikur Rahman
- Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration, Cheonan, Korea
| | | | - Faisal Saeed
- Department of Agricultural Genetic Engineering, Faculty of Agricultural Sciences and Technologies, Nigde Omer Halisdemir University, Turkey
| | - Wanmei Jin
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, Peking, China
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7
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Zhang Z, Yuan L, Ma Y, Kang Z, Zhou F, Gao Y, Yang S, Li T, Hu X. Exogenous 5-aminolevulinic acid alleviates low-temperature damage by modulating the xanthophyll cycle and nutrient uptake in tomato seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 189:83-93. [PMID: 36058015 DOI: 10.1016/j.plaphy.2022.08.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 08/05/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
5-Aminolevulinic acid (ALA), an antioxidant existing in plants, has been widely reported to participate in the process of coping with cold stress of plants. In this study, exogenous ALA promoted the growth of tomato plants and alleviated the appearance of purple tomato leaves under low-temperature stress. At the same time, exogenous ALA improved antioxidant enzyme activities, SlSOD gene expression, Fv/Fm, and proline contents and reduced H2O2 contents, SlRBOH gene expression, relative electrical conductivity, and malondialdehyde contents to alleviate the damage caused by low temperature to tomato seedlings. Compared with low-temperature stress, spraying exogenous ALA before low-temperature stress could restore the indicators of photochemical quenching, actual photochemical efficiency, electron transport rate, and nonphotochemical quenching to normal. Exogenous ALA could increase the total contents of the xanthophyll cycle pool, the positive de-epoxidation rate of the xanthophyll cycle and improved the expression levels of key genes in the xanthophyll cycle under low-temperature stress. In addition, we found that exogenous ALA significantly enhanced the absorption of mineral nutrients, promoted the transfer and distribution of mineral nutrients to the leaves, and improved the expression levels of mineral nutrient absorption-related genes, which were all conducive to the improved adaptation of tomato seedlings under low-temperature stress. In summary, the application of exogenous ALA can increase tomato seedlings' tolerance to low-temperature stress by improving the xanthophyll cycle and the ability of the absorption of mineral nutrients in tomato seedlings.
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Affiliation(s)
- Zhengda Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; Shaanxi Protected Agriculture Research Centre, Yangling, Shaanxi, 712100, China
| | - Luqiao Yuan
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; Shaanxi Protected Agriculture Research Centre, Yangling, Shaanxi, 712100, China
| | - Yongbo Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; Shaanxi Protected Agriculture Research Centre, Yangling, Shaanxi, 712100, China
| | - Zhen Kang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; Shaanxi Protected Agriculture Research Centre, Yangling, Shaanxi, 712100, China
| | - Fan Zhou
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yi Gao
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Shichun Yang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Tianlai Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China.
| | - Xiaohui Hu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture, Yangling, Shaanxi, 712100, China; Shaanxi Protected Agriculture Research Centre, Yangling, Shaanxi, 712100, China.
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8
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Sun C, Sun N, Ou Y, Gong B, Jin C, Shi Q, Lin X. Phytomelatonin and plant mineral nutrition. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5903-5917. [PMID: 35767844 DOI: 10.1093/jxb/erac289] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 06/29/2022] [Indexed: 05/27/2023]
Abstract
Plant mineral nutrition is critical for agricultural productivity and for human nutrition; however, the availability of mineral elements is spatially and temporally heterogeneous in many ecosystems and agricultural landscapes. Nutrient imbalances trigger intricate signalling networks that modulate plant acclimation responses. One signalling agent of particular importance in such networks is phytomelatonin, a pleiotropic molecule with multiple functions. Evidence indicates that deficiencies or excesses of nutrients generally increase phytomelatonin levels in certain tissues, and it is increasingly thought to participate in the regulation of plant mineral nutrition. Alterations in endogenous phytomelatonin levels can protect plants from oxidative stress, influence root architecture, and influence nutrient uptake and efficiency of use through transcriptional and post-transcriptional regulation; such changes optimize mineral nutrient acquisition and ion homeostasis inside plant cells and thereby help to promote growth. This review summarizes current knowledge on the regulation of plant mineral nutrition by melatonin and highlights how endogenous phytomelatonin alters plant responses to specific mineral elements. In addition, we comprehensively discuss how melatonin influences uptake and transport under conditions of nutrient shortage.
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Affiliation(s)
- Chengliang Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Nan Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Yiqun Ou
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Biao Gong
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, PR China
| | - Chongwei Jin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
| | - Qinghua Shi
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, PR China
| | - Xianyong Lin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, PR China
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9
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Li M, Zhou J, Du J, Li X, Sun Y, Wang Z, Lin Y, Zhang Y, Wang Y, He W, Wang X, Chen Q, Zhang Y, Luo Y, Tang H. Comparative Physiological and Transcriptomic Analyses of Improved Heat Stress Tolerance in Celery (Apium Graveolens L.) Caused by Exogenous Melatonin. Int J Mol Sci 2022; 23:ijms231911382. [PMID: 36232683 PMCID: PMC9569527 DOI: 10.3390/ijms231911382] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 12/03/2022] Open
Abstract
Melatonin (MT) is crucial in plant growth, development, and response to stress. Celery is a vegetable that grows in a cool climate, and a hot climate can deteriorate its growth, yield, and quality. This study investigates the effect of exogenous melatonin on celery physiology. Transcriptional levels were analyzed by spraying celery with exogenous MT before exposing it to high temperatures. The regulatory mechanism of exogenous MT-mediated heat tolerance was examined. The results show that the exogenous MT reduced the thermal damage state of celery seedlings, as well as the malondialdehyde (MDA) content and relative conductivity (REC), increasing the oxidase activity, the osmotic regulatory substances, and chlorophyll, enhancing the leaf transpiration and the light energy utilization efficiency. We examined the mechanism of exogenous MT in mitigating high-temperature damage using the transcriptome sequencing method. A total of 134 genes were expressed differently at high temperature in the celery treated with MT compared with the untreated celery. Functional annotation analysis revealed that the differentially expressed genes were abundant in the “pyruvate metabolism” pathway and the “peroxidase activity” pathway. According to the pathway-based gene expression analysis, exogenous MT can inhibit the upregulation of pyruvate synthesis genes and the downregulation of pyruvate consumption genes, preventing the accumulated pyruvate from rapidly upregulating the expression of peroxidase genes, and thereby enhancing peroxidase activity. RT-qPCR verification showed a rising encoding peroxidase gene expression under MT treatment. The gene expression pattern involved in pyruvate anabolism and metabolism agreed with the abundant transcriptome expression, validating the physiological index results. These results indicate that the application of exogenous MT to celery significantly enhances the ability of plant to remove reactive oxygen species (ROS) in response to heat stress, thereby improving the ability of plant to resist heat stress. The results of this study provide a theoretical basis for the use of MT to alleviate the damage caused by heat stress in plant growth and development.
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Affiliation(s)
- Mengyao Li
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Jin Zhou
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiageng Du
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoyan Li
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yue Sun
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhuo Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuanxiu Lin
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Pomology & Olericulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yunting Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Pomology & Olericulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Pomology & Olericulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Wen He
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Pomology & Olericulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaorong Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Pomology & Olericulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Haoru Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
- Institute of Pomology & Olericulture, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence:
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10
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Qari SH, Hassan MU, Chattha MU, Mahmood A, Naqve M, Nawaz M, Barbanti L, Alahdal MA, Aljabri M. Melatonin Induced Cold Tolerance in Plants: Physiological and Molecular Responses. FRONTIERS IN PLANT SCIENCE 2022; 13:843071. [PMID: 35371159 PMCID: PMC8967244 DOI: 10.3389/fpls.2022.843071] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 01/31/2022] [Indexed: 05/24/2023]
Abstract
Cold stress is one of the most limiting factors for plant growth and development. Cold stress adversely affects plant physiology, molecular and biochemical processes by determining oxidative stress, poor nutrient and water uptake, disorganization of cellular membranes and reduced photosynthetic efficiency. Therefore, to recover impaired plant functions under cold stress, the application of bio-stimulants can be considered a suitable approach. Melatonin (MT) is a critical bio-stimulant that has often shown to enhance plant performance under cold stress. Melatonin application improved plant growth and tolerance to cold stress by maintaining membrane integrity, plant water content, stomatal opening, photosynthetic efficiency, nutrient and water uptake, redox homeostasis, accumulation of osmolytes, hormones and secondary metabolites, and the scavenging of reactive oxygen species (ROS) through improved antioxidant activities and increase in expression of stress-responsive genes. Thus, it is essential to understand the mechanisms of MT induced cold tolerance and identify the diverse research gaps necessitating to be addressed in future research programs. This review discusses MT involvement in the control of various physiological and molecular responses for inducing cold tolerance. We also shed light on engineering MT biosynthesis for improving the cold tolerance in plants. Moreover, we highlighted areas where future research is needed to make MT a vital antioxidant conferring cold tolerance to plants.
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Affiliation(s)
- Sameer H. Qari
- Department of Biology, Al-Jumum University College, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Muhammad Umair Hassan
- Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang, China
| | | | - Athar Mahmood
- Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
| | - Maria Naqve
- Department of Botany, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Nawaz
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Lorenzo Barbanti
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Maryam A. Alahdal
- Department of Biology, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Maha Aljabri
- Department of Biology, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Biology, Research Laboratories Centre, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
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11
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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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12
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Wang H, Ren C, Cao L, Jin X, Wang M, Zhang M, Zhao Q, Li H, Zhang Y, Yu G. The mechanisms underlying melatonin improved soybean seedling growth at different nitrogen levels. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 48:1225-1240. [PMID: 34629143 DOI: 10.1071/fp21154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 08/25/2021] [Indexed: 05/22/2023]
Abstract
To investigate the function of melatonin (MT) on nitrogen uptake and metabolism in soybean, six groups of treatments, with and without 100μM melatonin were conducted at low, normal, and high nitrogen levels (1.5, 7.5, and 15mM, respectively). The related indexes of nitrogen metabolism and the antioxidant system of seedlings were measured and analysed. Results indicated that MT could enhance the level of nitrogen metabolism by upregulating the coding genes of enzymes related to nitrogen metabolism and increasing total nitrogen content, especially under low nitrogen levels. Under high nitrogen conditions, the addition of MT not only accelerated ammonium assimilation and utilisation by enhancing the activity of glutamine synthetase involved in ammonium assimilation, but also reduced the extent of membrane lipid peroxidation to alleviate the degree of damage by improving the activity of antioxidant enzymes. In addition, MT enhanced soybean growth with positive effects in morphological changes at different nitrogen levels, including significantly increased stem diameter, total leaf area, and root nodule number, and biomass accumulation. Finally, biomass accumulation increased under low, normal, and high nitrogen levels by 9.80%, 14.06%, and 11.44%, respectively. The results suggested that MT could enhance the soybean tolerance to low and excessive N treatments.
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Affiliation(s)
- Huamei Wang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Chunyuan Ren
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Liang Cao
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Xijun Jin
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Mengxue Wang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Mingcong Zhang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Qiang Zhao
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - He Li
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Yuxian Zhang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China; and National Coarse Cereals Engineering Research Center, Daqing 163000, China
| | - Gaobo Yu
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China
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13
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Abstract
Abiotic stress adversely affects plant growth and metabolism and as such reduces plant productivity. Recognized as a major contributor in the production of reactive oxygen species (ROS), it hinders the growth of plants through induction of oxidative stress. Biostimulants such as melatonin have a multifunctional role, acting as a defense strategy in minimizing the effects of oxidative stress. Melatonin plays important role in plant processes ranging from seed germination to senescence, besides performing the function of a biostimulant in improving the plant’s productivity. In addition to its important role in the signaling cascade, melatonin acts as an antioxidant that helps in scavenging ROS, generated as part of different stresses among plants. The current study was undertaken to elaborate the synthesis and regulation of melatonin in plants, besides emphasizing its function under various abiotic stress namely, salt, temperature, herbicides, heavy metals, and drought. Additionally, a special consideration was put on the crosstalk of melatonin with phytohormones to overcome plant abiotic stress.
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14
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Bawa G, Feng L, Chen G, Chen H, Hu Y, Pu T, Cheng Y, Shi J, Xiao T, Zhou W, Yong T, Sun X, Yang F, Yang W, Wang X. Gibberellins and auxin regulate soybean hypocotyl elongation under low light and high-temperature interaction. PHYSIOLOGIA PLANTARUM 2020; 170:345-356. [PMID: 32588443 DOI: 10.1111/ppl.13158] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/18/2020] [Accepted: 06/23/2020] [Indexed: 05/25/2023]
Abstract
Soybean is an important oilseed crop grown globally. However, two examples of environmental stresses that drastically regulate soybean growth are low light and high-temperature. Emerging evidence suggests a possible interconnection between these two environmental stimuli. Low light and high-temperature as individual factors have been reported to regulate plant hypocotyl elongation. However, their interactive signal effect on soybean growth and development remains largely unclear. Here, we report that gibberellins (GAs) and auxin are required for soybean hypocotyl elongation under low light and high-temperature interaction. Our analysis indicated that low light and high-temperature interaction enhanced the regulation of soybean hypocotyl elongation and that the endogenous GA3 , GA7 , indole-3-acetic acid (IAA), and indole-3-pyruvate (IPA) contents significantly increased. Again, analysis of the effect of exogenous phytohormones and biosynthesis inhibitors treatments showed that exogenous GA, IAA, and paclobutrazol (PAC), 2, 3, 5,-triiodobenzoic acid (TIBA) treatments significantly regulated soybean seedlings growth under low light and high-temperature interaction. Further qRT-PCR analysis showed that the expression level of GA biosynthesis pathway genes (GmGA3ox1, GmGA3ox2 and GmGA3) and auxin biosynthesis pathway genes (GmYUCCA3, GmYUCCA5 and GmYUCCA7) significantly increased under (i) low light and high-temperature interaction and (ii) exogenous GA and IAA treatments. Altogether, these observations support the hypothesis that gibberellins and auxin regulate soybean hypocotyl elongation under low light and high-temperature stress interaction.
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Affiliation(s)
- George Bawa
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lingyang Feng
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guopeng Chen
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hong Chen
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yun Hu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tian Pu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yajiao Cheng
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jianyi Shi
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Te Xiao
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenguan Zhou
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Taiwen Yong
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xin Sun
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Feng Yang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenyu Yang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaochun Wang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu, 611130, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, China
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