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Hernández-Esquivel AA, Torres-Olmos JA, Méndez-Gómez M, Castro-Mercado E, Flores-Cortéz I, Peña-Uribe CA, Campos-García J, López-Bucio J, Reyes-de la Cruz H, Valencia-Cantero E, García-Pineda E. Hydrogen peroxide modulates the expression of the target of rapamycin (TOR) and cell division in Arabidopsis thaliana. PROTOPLASMA 2024:10.1007/s00709-024-01959-6. [PMID: 38802622 DOI: 10.1007/s00709-024-01959-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 05/15/2024] [Indexed: 05/29/2024]
Abstract
Hydrogen peroxide (H2O2) is naturally produced by plant cells during normal development and serves as a messenger that regulates cell metabolism. Despite its importance, the relationship between hydrogen peroxide and the target of rapamycin (TOR) pathway, as well as its impact on cell division, has been poorly analyzed. In this study, we explore the interaction of H2O2 with TOR, a serine/threonine protein kinase that plays a central role in controlling cell growth, size, and metabolism in Arabidopsis thaliana. By applying two concentrations of H2O2 exogenously (0.5 and 1 mM), we could correlate developmental traits, such as primary root growth, lateral root formation, and fresh weight, with the expression of the cell cycle gene CYCB1;1, as well as TOR expression. When assessing the expression of the ribosome biogenesis-related gene RPS27B, an increase of 94.34% was noted following exposure to 1 mM H2O2 treatment. This increase was suppressed by the TOR inhibitor torin 2. The elimination of H2O2 accumulation with ascorbic acid (AA) resulted in decreased cell division as well as TOR expression. The potential molecular mechanisms associated with the effects of H2O2 on the cell cycle and TOR expression in roots are discussed in the context of the results.
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Affiliation(s)
- Alma Alejandra Hernández-Esquivel
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Jorge Alejandro Torres-Olmos
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Manuel Méndez-Gómez
- Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Unidad Irapuato, 36821, Irapuato, Gto., México
| | - Elda Castro-Mercado
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Idolina Flores-Cortéz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - César Arturo Peña-Uribe
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - José López-Bucio
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Homero Reyes-de la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Eduardo Valencia-Cantero
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México
| | - Ernesto García-Pineda
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. B1, Morelia, Michoacán, CP 58040, México.
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Duan Y, Wang X, Jiao Y, Liu Y, Li Y, Song Y, Wang L, Tong X, Jiang Y, Wang S, Wang S. Elucidating the role of exogenous melatonin in mitigating alkaline stress in soybeans across different growth stages: a transcriptomic and metabolomic approach. BMC PLANT BIOLOGY 2024; 24:380. [PMID: 38720246 PMCID: PMC11077714 DOI: 10.1186/s12870-024-05101-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 05/03/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Soybean (Glycine max), a vital grain and oilseed crop, serves as a primary source of plant protein and oil. Soil salinization poses a significant threat to soybean planting, highlighting the urgency to improve soybean resilience and adaptability to saline stress. Melatonin, recently identified as a key plant growth regulator, plays crucial roles in plant growth, development, and responses to environmental stress. However, the potential of melatonin to mitigate alkali stress in soybeans and the underlying mechanisms remain unclear. RESULTS This study investigated the effects of exogenous melatonin on the soybean cultivar Zhonghuang 13 under alkaline stress. We employed physiological, biochemical, transcriptomic, and metabolomic analyses throughout both vegetative and pod-filling growth stages. Our findings demonstrate that melatonin significantly counteracts the detrimental effects of alkaline stress on soybean plants, promoting plant growth, photosynthesis, and antioxidant capacity. Transcriptomic analysis during both growth stages under alkaline stress, with and without melatonin treatment, identified 2,834 and 549 differentially expressed genes, respectively. These genes may play a vital role in regulating plant adaptation to abiotic stress. Notably, analysis of phytohormone biosynthesis pathways revealed altered expression of key genes, particularly in the ARF (auxin response factor), AUX/IAA (auxin/indole-3-acetic acid), and GH3 (Gretchen Hagen 3) families, during the early stress response. Metabolomic analysis during the pod-filling stage identified highly expressed metabolites responding to melatonin application, such as uteolin-7-O-(2''-O-rhamnosyl)rutinoside and Hederagenin-3-O-glucuronide-28-O-glucosyl(1,2)glucoside, which helped alleviate the damage caused by alkali stress. Furthermore, we identified 183 differentially expressed transcription factors, potentially playing a critical role in regulating plant adaptation to abiotic stress. Among these, the gene SoyZH13_04G073701 is particularly noteworthy as it regulates the key differentially expressed metabolite, the terpene metabolite Hederagenin-3-O-glucuronide-28-O-glucosyl(1,2)glucoside. WGCNA analysis identified this gene (SoyZH13_04G073701) as a hub gene, positively regulating the crucial differentially expressed metabolite of terpenoids, Hederagenin-3-O-glucuronide-28-O-glucosyl(1,2)glucoside. Our findings provide novel insights into how exogenous melatonin alleviates alkali stress in soybeans at different reproductive stages. CONCLUSIONS Integrating transcriptomic and metabolomic approaches, our study elucidates the mechanisms by which exogenous melatonin ameliorates the inhibitory effects of alkaline stress on soybean growth and development. This occurs through modulation of biosynthesis pathways for key compounds, including terpenes, flavonoids, and phenolics. Our findings provide initial mechanistic insights into how melatonin mitigates alkaline stress in soybeans, offering a foundation for molecular breeding strategies to enhance salt-alkali tolerance in this crop.
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Affiliation(s)
- Yajuan Duan
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Xianxu Wang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Yan Jiao
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Yangyang Liu
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Yue Li
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Yongze Song
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Lei Wang
- School of Resources and Environment, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Xiaohong Tong
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Yan Jiang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China
| | - Shaodong Wang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China.
| | - Sui Wang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Northeast Agricultural University, 600 Changjiang Road, Harbin, 150030, PR China.
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Kołodziejczyk I, Kaźmierczak A. Melatonin - This is important to know. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 919:170871. [PMID: 38340815 DOI: 10.1016/j.scitotenv.2024.170871] [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: 12/09/2023] [Revised: 02/07/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
MEL (N-acetyl-5-methoxytryptamine) is a well-known natural compound that controls cellular processes in both plants and animals and is primarily found in plants as a neurohormone. Its roles have been described very broadly, from its antioxidant function related to the photoperiod and determination of seasonal rhythms to its role as a signalling molecule, imitating the action of plant hormones (or even being classified as a prohormone). MEL positively affects the yield and survival of plants by increasing their tolerance to unfavourable biotic and abiotic conditions, which makes MEL widely applicable in ecological farming as a stimulant of growth and development. Thus, it is called a phytobiostimulator. In this review, we discuss the genesis of MEL functions, the presence of MEL at the cellular level and its effects on gene expression and plant development, which can ensure the survival of plants under the conditions they encounter. Moreover, we consider the future application possibilities of MEL in agriculture.
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Affiliation(s)
- Izabela Kołodziejczyk
- Department of Geobotany and Plant Ecology, Institute of Ecology and Environmental Protection, University of Lodz, Lodz 90-236, Banacha 12/16, 90-237, Poland
| | - Andrzej Kaźmierczak
- Department of Cytophysiology, Institute of Experimental Biology Faculty of Biology and Environmental Protection, University of Łódź, Pomorska 141/143, 90-236 Łódź, Poland.
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Ahammed GJ, Li Z, Chen J, Dong Y, Qu K, Guo T, Wang F, Liu A, Chen S, Li X. Reactive oxygen species signaling in melatonin-mediated plant stress response. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108398. [PMID: 38359555 DOI: 10.1016/j.plaphy.2024.108398] [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: 10/02/2023] [Revised: 01/08/2024] [Accepted: 01/22/2024] [Indexed: 02/17/2024]
Abstract
Reactive oxygen species (ROS) are crucial signaling molecules in plants that play multifarious roles in prompt response to environmental stimuli. Despite the classical thoughts that ROS are toxic when accumulate in excess, recent advances in plant ROS signaling biology reveal that ROS participate in biotic and abiotic stress perception, signal integration, and stress-response network activation, hence contributing to plant defense and stress tolerance. ROS production, scavenging and transport are fine-tuned by plant hormones and stress-response signaling pathways. Crucially, the emerging plant hormone melatonin attenuates excessive ROS accumulation under stress, whereas ROS signaling mediates melatonin-induced plant developmental response and stress tolerance. In particular, RESPIRATORY BURST OXIDASE HOMOLOG (RBOH) proteins responsible for apoplastic ROS generation act downstream of melatonin to mediate stress response. In this review, we discuss promising developments in plant ROS signaling and how ROS might mediate melatonin-induced plant resilience to environmental stress.
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Affiliation(s)
- Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Zhe Li
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Jingying Chen
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Yifan Dong
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Kehao Qu
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Tianmeng Guo
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Fenghua Wang
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Airong Liu
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Shuangchen Chen
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China.
| | - Xin Li
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, PR China.
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Wang Y, Jin S, Liu Z, Chen G, Cheng P, Li L, Xu S, Shen W. H2 supplied via ammonia borane stimulates lateral root branching via phytomelatonin signaling. PLANT PHYSIOLOGY 2024; 194:884-901. [PMID: 37944026 DOI: 10.1093/plphys/kiad595] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023]
Abstract
A reliable and stable hydrogen gas (H2) supply will benefit agricultural laboratory and field trials. Here, we assessed ammonia borane (AB), an efficient hydrogen storage material used in the energy industry, and determined its effect on plant physiology and the corresponding mechanism. Through hydroponics and pot experiments, we discovered that AB increases tomato (Solanum lycopersicum) lateral root (LR) branching and this function depended on the increased endogenous H2 level caused by the sustainable H2 supply. In particular, AB might trigger LR primordia initiation. Transgenic tomato and Arabidopsis (Arabidopsis thaliana) expressing hydrogenase1 (CrHYD1) from Chlamydomonas reinhardtii not only accumulated higher endogenous H2 and phytomelatonin levels but also displayed pronounced LR branching. These endogenous H2 responses achieved by AB or genetic manipulation were sensitive to the pharmacological removal of phytomelatonin, indicating the downstream role of phytomelatonin in endogenous H2 control of LR formation. Consistently, extra H2 supply failed to influence the LR defective phenotypes in phytomelatonin synthetic mutants. Molecular evidence showed that the phytomelatonin-regulated auxin signaling network and cell-cycle regulation were associated with the AB/H2 control of LR branching. Also, AB and melatonin had little effect on LR branching in the presence of auxin synthetic inhibitors. Collectively, our integrated approaches show that supplying H2 via AB increases LR branching via phytomelatonin signaling. This finding might open the way for applying hydrogen storage materials to horticultural production.
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Affiliation(s)
- Yueqiao Wang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Shanshan Jin
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Ziyu Liu
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Genmei Chen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Pengfei Cheng
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Longna Li
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
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Chu Y, Bao Q, Li Y, Sun H, Liu Z, Shi J, Huang Y. Melatonin Alleviates Antimony Toxicity by Regulating the Antioxidant Response and Reducing Antimony Accumulation in Oryza sativa L. Antioxidants (Basel) 2023; 12:1917. [PMID: 38001770 PMCID: PMC10669696 DOI: 10.3390/antiox12111917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Antimony (Sb) is a hazardous metal element that is potentially toxic and carcinogenic. Melatonin (MT) is an indole compound with antioxidant properties that plays an essential role in plant growth and alleviates heavy metal stresses. Nevertheless, little is known about the effects and mechanisms of exogenous MT action on rice under Sb stress. The aim of this experiment was to explore the mechanism of MT reducing Sb toxicity in rice via hydroponics. The results showed that Sb stress significantly inhibited the growth of rice, including biomass, root parameters, and root viability. Exogenous MT obviously alleviated the inhibition of Sb stress on seedling growth and increased biomass, root parameters, and root viability by 15-55%. MT significantly reduced the total Sb content in rice and the subcellular Sb contents in roots by nearly 20-40% and 12.3-54.2% under Sb stress, respectively. MT significantly decreased the contents of malondialdehyde (MDA, by nearly 50%), ROS (H2O2 and O2·-, by nearly 20-30%), and RNS (NO and ONOO-) in roots under Sb stress, thus reducing oxidative stress and cell membrane damage. Furthermore, MT reversed Sb-induced phytotoxicity by increasing the activities of antioxidant enzymes (SOD, POD, CAT, and APX) by nearly 15% to 50% and by regulating the AsA-GSH cycle. In conclusion, this study demonstrates the potential of MT to maintain redox homeostasis and reduce Sb toxicity in rice cells, decreasing the content of Sb in rice and thereby alleviating the inhibition of Sb on rice growth. The results provided a feasible strategy for mitigating Sb toxicity in rice.
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Affiliation(s)
- Yutan Chu
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjing 300191, China; (Y.C.); (Y.L.); (H.S.); (Z.L.); (J.S.)
- Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Qiongli Bao
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjing 300191, China; (Y.C.); (Y.L.); (H.S.); (Z.L.); (J.S.)
- Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Yan Li
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjing 300191, China; (Y.C.); (Y.L.); (H.S.); (Z.L.); (J.S.)
- Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Hongyu Sun
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjing 300191, China; (Y.C.); (Y.L.); (H.S.); (Z.L.); (J.S.)
- Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Zewei Liu
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjing 300191, China; (Y.C.); (Y.L.); (H.S.); (Z.L.); (J.S.)
- Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Jiahao Shi
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjing 300191, China; (Y.C.); (Y.L.); (H.S.); (Z.L.); (J.S.)
- Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Yizong Huang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
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de Andrade FHA, Ferreira AMO, Azevedo LM, de Oliveira Santos M, Carvalho GR, de Resende MLV, Bicalho EM, Silva VA. IBA and melatonin increase trigonelline and caffeine during the induction and initiation of adventitious roots in Coffea arabica L. cuttings. Sci Rep 2023; 13:15151. [PMID: 37704663 PMCID: PMC10499982 DOI: 10.1038/s41598-023-41288-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023] Open
Abstract
Caffeine and trigonelline are found in Coffea arabica, and show antioxidant roles and growth and development functions. However, there are no reports on trigonelline and caffeine in relation to coffee rooting. The aim was to evaluate the impact of application of indole-3-butyric acid (IBA) and melatonin on caffeine and trigonelline at different stages of adventitious rooting in cuttings. In addition, to study the correlation between these metabolites and H2O2, phenols, and antioxidant enzymes. Four treatments (Control, melatonin 21 µM (M21), melatonin 43 µM (M43), and IBA 7380 µM (IBA)) were used, with four replications. The growth and biochemical parameters of the antioxidant system were performed in induction, initiation, and extension rooting stages. Higher concentrations of trigonelline and caffeine quantified in the induction and initiation stages were positively correlated with higher percentage of rooted cuttings. Trigonelline and caffeine were positively correlated with H2O2 in all stages of development of adventitious roots. The correlations of trigoneline and caffeine with phenols and antioxidant enzymes reveal different profiles, depending on the phases. The results indicate that IBA and melatonin increase trigonelline and caffeine during the induction and initiation of adventitious roots in Coffea arabica cuttings, which is correlated with a higher percentage of rooted cuttings.
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Affiliation(s)
| | | | | | - Meline de Oliveira Santos
- Agricultural Research Company of Minas Gerais, Lavras, Minas Gerais, Brazil
- Scholarship BDCTI-I, FAPEMIG/INCT Café, Lavras, Brazil
| | | | | | | | - Vânia Aparecida Silva
- Agricultural Research Company of Minas Gerais, Lavras, Minas Gerais, Brazil
- Scholarship DT, CNPq, Lavras, Brazil
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8
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Zboińska M, Romero LC, Gotor C, Kabała K. Regulation of V-ATPase by Jasmonic Acid: Possible Role of Persulfidation. Int J Mol Sci 2023; 24:13896. [PMID: 37762199 PMCID: PMC10531226 DOI: 10.3390/ijms241813896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/30/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Vacuolar H+-translocating ATPase (V-ATPase) is a proton pump crucial for plant growth and survival. For this reason, its activity is tightly regulated, and various factors, such as signaling molecules and phytohormones, may be involved in this process. The aim of this study was to explain the role of jasmonic acid (JA) in the signaling pathways responsible for the regulation of V-ATPase in cucumber roots and its relationship with other regulators of this pump, i.e., H2S and H2O2. We analyzed several aspects of the JA action on the enzyme, including transcriptional regulation, modulation of protein levels, and persulfidation of selected V-ATPase subunits as an oxidative posttranslational modification induced by H2S. Our results indicated that JA functions as a repressor of V-ATPase, and its action is related to a decrease in the protein amount of the A and B subunits, the induction of oxidative stress, and the downregulation of the E subunit persulfidation. We suggest that both H2S and H2O2 may be downstream components of JA-dependent negative proton pump regulation. The comparison of signaling pathways induced by two negative regulators of the pump, JA and cadmium, revealed that multiple pathways are involved in the V-ATPase downregulation in cucumber roots.
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Affiliation(s)
- Magdalena Zboińska
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland;
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; (L.C.R.); (C.G.)
| | - Luis C. Romero
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; (L.C.R.); (C.G.)
| | - Cecilia Gotor
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; (L.C.R.); (C.G.)
| | - Katarzyna Kabała
- Department of Plant Molecular Physiology, Faculty of Biological Sciences, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland;
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Wang Z, Li L, Khan D, Chen Y, Pu X, Wang X, Guan M, Rengel Z, Chen Q. Nitric oxide acts downstream of reactive oxygen species in phytomelatonin receptor 1 (PMTR1)-mediated stomatal closure in Arabidopsis. JOURNAL OF PLANT PHYSIOLOGY 2023; 282:153917. [PMID: 36706575 DOI: 10.1016/j.jplph.2023.153917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/21/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
Reactive oxygen species (ROS) and nitric oxide (NO) are important signaling molecules regulating stomatal movements in plants. Melatonin (N-acetyl-5-methoxytryptamine) was found to induce stomatal closure via phytomelatonin receptor 1 (PMTR1)-mediated activation of ROS production. Here, we evaluated the interaction between ROS and NO in the melatonin-induced stomatal closure in Arabidopsis. The results showed that the exogenous melatonin-induced stomatal closure and NO production were abolished by carboxy-PTIO (cPTIO, a NO scavenger). Additionally, the mutant lines nitrate reductase 1 and 2 (nia1nia2) and NO-associated 1 (noa1) did not show melatonin-induced stomatal closure, indicating that the melatonin-mediated stomatal closure is dependent on NO. The application of H2O2 induced the NO production and stomatal closure in the presence or absence of melatonin. However, the melatonin-induced NO production was impaired in the rhohC and rbohD/F (NADPH oxidase respiratory burst oxidase homologs) mutant plants. Furthermore, the ROS levels in nia1nia2 and noa1 did not differ significantly from the wild type plants, indicating that NO is a downstream component in the melatonin-induced ROS production. Exogenous melatonin did not induce NO and ROS production in the guard cells of pmtr1 mutant lines, suggesting NO occurs downstream of ROS in the PMTR1-mediated stomatal closure in Arabidopsis. Taken together, the results presented here suggest that melatonin-induced stomatal closure via PMTR1-mediated signaling in the regulation of ROS and NO production in Arabidopsis.
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Affiliation(s)
- Zirui Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Leilin Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Dawood Khan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Yanli Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Xiaojun Pu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Xinjia Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Miao Guan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China
| | - Zed Rengel
- UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia; Institute for Adriatic Crops and Karst Reclamation, 21000 Split, Croatia
| | - Qi Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 650500, Kunming, China.
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10
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Ahmad R, Manzoor M, Muhammad HMD, Altaf MA, Shakoor A. Exogenous Melatonin Spray Enhances Salinity Tolerance in Zizyphus Germplasm: A Brief Theory. Life (Basel) 2023; 13:life13020493. [PMID: 36836849 PMCID: PMC9958626 DOI: 10.3390/life13020493] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/24/2023] [Accepted: 02/01/2023] [Indexed: 02/12/2023] Open
Abstract
Fruit orchards are frequently irrigated with brackish water. Irrigation with poor quality water is also a major cause of salt accumulation in soil. An excess of salts results in stunted growth, poor yield, inferior quality and low nutritional properties. Melatonin is a low molecular weight protein that shows multifunctional, regulatory and pleiotropic behavior in the plant kingdom. Recently, its discovery brought a great revolution in sustainable fruit production under salinity-induced environments. Melatonin contributed to enhanced tolerance in Zizyphus fruit species by improving the plant defense system's potential to cope with the adverse effects of salinity. The supplemental application of melatonin has improved the generation of antioxidant assays and osmolytes involved in the scavenging of toxic ROS. The tolerance level of the germplasm is chiefly based on the activation of the defense system against the adverse effects of salinity. The current study explored the contribution of melatonin against salinity stress and provides information regarding which biochemical mechanism can be effective and utilized for the development of salt-tolerant germplasm in Zizyphus.
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Affiliation(s)
- Riaz Ahmad
- Department of Horticulture, The University of Agriculture, Dera Ismail Khan 29220, Pakistan
| | - Meryam Manzoor
- Department of Horticulture, Bahauddin Zakariya University, Multan 60800, Pakistan
| | | | | | - Awais Shakoor
- Teagasc, Environment, Soils and Land Use Department, Johnstown Castle, Co., Y35 Y521 Wexford, Ireland
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11
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Aghdam MS, Mukherjee S, Flores FB, Arnao MB, Luo Z, Corpas FJ. Functions of Melatonin during Postharvest of Horticultural Crops. PLANT & CELL PHYSIOLOGY 2023; 63:1764-1786. [PMID: 34910215 DOI: 10.1093/pcp/pcab175] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/11/2021] [Accepted: 12/14/2021] [Indexed: 05/14/2023]
Abstract
Melatonin, a tryptophan-derived molecule, is endogenously generated in animal, plant, fungal and prokaryotic cells. Given its antioxidant properties, it is involved in a myriad of signaling functions associated with various aspects of plant growth and development. In higher plants, melatonin (Mel) interacts with plant regulators such as phytohormones, as well as reactive oxygen and nitrogen species including hydrogen peroxide (H2O2), nitric oxide (NO) and hydrogen sulfide (H2S). It shows great potential as a biotechnological tool to alleviate biotic and abiotic stress, to delay senescence and to conserve the sensory and nutritional quality of postharvest horticultural products which are of considerable economic importance worldwide. This review provides a comprehensive overview of the biochemistry of Mel, whose endogenous induction and exogenous application can play an important biotechnological role in enhancing the marketability and hence earnings from postharvest horticultural crops.
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Affiliation(s)
- Morteza Soleimani Aghdam
- Department of Horticultural Science, Imam Khomeini International University, Qazvin 34148-96818, Iran
| | - Soumya Mukherjee
- Department of Botany, Jangipur College, University of Kalyani, West Bengal 742213, India
| | - Francisco Borja Flores
- Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Espinardo-Murcia 30100, Spain
| | - Marino B Arnao
- Department of Plant Biology (Plant Physiology), Faculty of Biology, University of Murcia, Murcia 30100, Spain
| | - Zisheng Luo
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Francisco J Corpas
- Department of Biochemistry, Cell and Molecular Biology of Plants, Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín, CSIC, C/Profesor Albareda, 1, Granada 18008, Spain
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12
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Li N, Zhai K, Yin Q, Gu Q, Zhang X, Melencion MG, Chen Z. Crosstalk between melatonin and reactive oxygen species in fruits and vegetables post-harvest preservation: An update. Front Nutr 2023; 10:1143511. [PMID: 36937352 PMCID: PMC10020600 DOI: 10.3389/fnut.2023.1143511] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/16/2023] [Indexed: 03/06/2023] Open
Abstract
Fruits and vegetables contain numerous nutrients, such as vitamins, minerals, phenolic compounds, and dietary fibers. They reduce the incidence of cardiovascular diseases and the risk of certain chronic diseases, and improve the antioxidant and anti-inflammatory capacity. Moreover, melatonin was found in various fruits and vegetables species. Melatonin acts as a multifunctional compound to participate in various physiological processes. In recent years, many advances have been found that melatonin is also appraised as a key modulator on the fruits and vegetables post-harvest preservation. Fruits and vegetables post-harvest usually elicit reactive oxygen species (ROS) generation and accumulation. Excess ROS stimulate cell damage, protein structure destruction, and tissue aging, and thereby reducing their quality. Numerous studies find that exogenous application of melatonin modulates ROS homeostasis by regulating the antioxidant enzymes and non-enzymatic antioxidants systems. Further evidences reveal that melatonin often interacts with hormones and other signaling molecules, such as ROS, nitric oxide (NO), hydrogen sulfide (H2S), and etc. Among these 'new' molecules, crosstalks of melatonin and ROS, especially the H2O2 produced by RBOHs, are provided in fruits and vegetables post-harvest preservation in this review. It will provide reference for complicated integration of both melatonin and ROS as signal molecules in future study.
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Affiliation(s)
- Na Li
- Biology Department, Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Philippines
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
| | - Kefeng Zhai
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
- Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou, China
| | - Qin Yin
- Biology Department, Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Philippines
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
| | - Quan Gu
- School of Biology, Food and Environment, Hefei University, Hefei, China
| | - Xingtao Zhang
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
| | - Merced G. Melencion
- Biology Department, Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Philippines
- *Correspondence: Merced G. Melencion, ; Ziping Chen,
| | - Ziping Chen
- Anhui Promotion Center for Technology Achievements Transfer, Anhui Academy of Science and Technology, Hefei, China
- *Correspondence: Merced G. Melencion, ; Ziping Chen,
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13
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Guo Y, Zhu J, Liu J, Xue Y, Chang J, Zhang Y, Ahammed GJ, Wei C, Ma J, Li P, Zhang X, Li H. Melatonin delays ABA-induced leaf senescence via H 2 O 2 -dependent calcium signalling. PLANT, CELL & ENVIRONMENT 2023; 46:171-184. [PMID: 36324267 DOI: 10.1111/pce.14482] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Precocious leaf senescence can reduce crop yield and quality by limiting the growth stage. Melatonin has been shown to delay leaf senescence; however, the underlying mechanism remains obscure. Here, we show that melatonin offsets abscisic acid (ABA) to protect photosystem II and delay the senescence of attached old leaves under the light. Melatonin induced H2 O2 accumulation accompanied by an upregulation of melon respiratory burst oxidase homolog D (CmRBOHD) under ABA-induced stress. Both melatonin and H2 O2 induced the accumulation of cytoplasmic-free Ca2+ ([Ca2+ ]cyt ) in response to ABA, while blocking of Ca2+ influx channels attenuated melatonin- and H2 O2 -induced ABA tolerance. CmRBOHD overexpression induced [Ca2+ ]cyt accumulation and delayed leaf senescence, whereas deletion of Arabidopsis AtRBOHD, a homologous gene of CmRBOHD, compromised the melatonin-induced [Ca2+ ]cyt accumulation and delay of leaf senescence in Arabidopsis under ABA stress. Furthermore, melatonin, H2 O2 and Ca2+ attenuated ABA-induced K+ efflux and subsequent cell death. CmRBOHD overexpression and AtRBOHD deletion alleviated and aggravated the ABA-induced K+ efflux, respectively. Taken together, our study unveils a new mechanism by which melatonin offsets ABA action to delay leaf senescence via RBOHD-dependent H2 O2 production that triggers [Ca2+ ]cyt accumulation and subsequently inhibits K+ efflux and delays cell death/leaf senescence in response to ABA.
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Affiliation(s)
- Yanliang Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Jingyi Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Jiahe Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Yuxing Xue
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Jingjing Chang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Yong Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, Henan, China
| | - Chunhua Wei
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Jianxiang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Pingfang Li
- Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Xiaoshan Institute of Cotton and Bast Fibre Crops Research, Hangzhou, China
| | - Xian Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Hao Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
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14
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Liu F, Wang Y, Zhang G, Li L, Shen W. Molecular hydrogen positively influences lateral root formation by regulating hydrogen peroxide signaling. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 325:111500. [PMID: 36257409 DOI: 10.1016/j.plantsci.2022.111500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/01/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Although a previous study discovered that exogenous molecular hydrogen (H2) supplied with hydrogen-rich water (HRW) can mediate lateral root (LR) development, whether or how endogenous H2 influences LR formation is still elusive. In this report, mimicking the induction responses in tomato seedlings achieved by HRW or exogenous hydrogen peroxide (H2O2; a positive control), transgenic Arabidopsis that overexpressed the hydrogenase1 gene (CrHYD1) from Chlamydomonas reinhardtii not only stimulated endogenous hydrogen peroxide (H2O2) production, but also markedly promoted LR formation. Above H2 and H2O2 responses were abolished by the removal of endogenous H2O2. Moreover, the changes in transcriptional patterns of representative cell cycle genes and auxin signaling-related genes during LR development in both tomato and transgenic Arabidopsis thaliana matched with above phenotypes. The alternations in the levels of GUS transcripts driven by the CYCB1 promoter and expression of PIN1 protein further indicated that H2O2 synthesis was tightly linked to LR formation achieved by endogenous H2, and cell cycle regulation and auxin-dependent pathway might be their targets. There results might provide a reference for molecular mechanism underlying the regulation of root morphogenesis by H2.
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Affiliation(s)
- Feijie Liu
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yueqiao Wang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Guhua Zhang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Longna Li
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
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15
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Chen Q, Hou S, Pu X, Li X, Li R, Yang Q, Wang X, Guan M, Rengel Z. Dark secrets of phytomelatonin. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5828-5839. [PMID: 35522068 DOI: 10.1093/jxb/erac168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Phytomelatonin is a newly identified plant hormone, and its primary functions in plant growth and development remain relatively poorly appraised. Phytomelatonin is a master regulator of reactive oxygen species (ROS) signaling and acts as a darkness signal in circadian stomatal closure. Plants exhibit at least three interrelated patterns of interaction between phytomelatonin and ROS production. Exogenous melatonin can induce flavonoid biosynthesis, which might be required for maintenance of antioxidant capacity under stress, after harvest, and in leaf senescence conditions. However, several genetic studies have provided direct evidence that phytomelatonin plays a negative role in the biosynthesis of flavonoids under non-stress conditions. Phytomelatonin delays flowering time in both dicot and monocot plants, probably via its receptor PMTR1 and interactions with the gibberellin, strigolactone, and ROS signaling pathways. Furthermore, phytomelatonin signaling also functions in hypocotyl and shoot growth in skotomorphogenesis and ultraviolet B (UV-B) exposure; the G protein α-subunit (Arabidopsis GPA1 and rice RGA1) and constitutive photomorphogenic1 (COP1) are important signal components during this process. Taken together, these findings indicate that phytomelatonin acts as a darkness signal with important regulatory roles in circadian stomatal closure, flavonoid biosynthesis, flowering, and hypocotyl and shoot growth.
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Affiliation(s)
- Qi Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Suying Hou
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xiaojun Pu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xiaomin Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Rongrong Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Qian Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xinjia Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Miao Guan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Zed Rengel
- UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Perth WA, Australia
- Institute for Adriatic Crops and Karst Reclamation, Split, Croatia
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16
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Wang K, Xing Q, Ahammed GJ, Zhou J. Functions and prospects of melatonin in plant growth, yield, and quality. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5928-5946. [PMID: 35640564 DOI: 10.1093/jxb/erac233] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 05/23/2022] [Indexed: 05/27/2023]
Abstract
Melatonin (N-acetyl-5-methoxytryptamine) is an indole molecule widely found in animals and plants. It is well known that melatonin improves plant resistance to various biotic and abiotic stresses due to its potent free radical scavenging ability while being able to modulate plant signaling and response pathways through mostly unknown mechanisms. In recent years, an increasing number of studies have shown that melatonin plays a crucial role in improving crop quality and yield by participating in the regulation of various aspects of plant growth and development. Here, we review the effects of melatonin on plant vegetative growth and reproductive development, and systematically summarize its molecular regulatory network. Moreover, the effective concentrations of exogenously applied melatonin in different crops or at different growth stages of the same crop are analysed. In addition, we compare endogenous phytomelatonin concentrations in various crops and different organs, and evaluate a potential function of phytomelatonin in plant circadian rhythms. The prospects of different approaches in regulating crop yield and quality through exogenous application of appropriate concentrations of melatonin, endogenous modification of phytomelatonin metabolism-related genes, and the use of nanomaterials and other technologies to improve melatonin utilization efficiency are also discussed.
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Affiliation(s)
- Kaixin Wang
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
- Hainan Institute, Zhejiang University, Sanya 572025, China
| | - Qufan Xing
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
| | - Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, China
- Henan International Joint Laboratory of Stress Resistance Regulation and Safe Production of Protected Vegetables, Luoyang, 471023, China
| | - Jie Zhou
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Yuhangtang Road 866, Hangzhou, 310058, China
- Hainan Institute, Zhejiang University, Sanya 572025, China
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Agricultural Ministry of China, Yuhangtang Road 866, Hangzhou, 310058, China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, 276000, China
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17
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Maity S, Guchhait R, Pramanick K. Melatonin mediated activation of MAP kinase pathway may reduce DNA damage stress in plants: A review. Biofactors 2022; 48:965-971. [PMID: 35938772 DOI: 10.1002/biof.1882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/20/2022] [Indexed: 12/21/2022]
Abstract
Melatonin is an important biomolecule found in diverse groups of organisms. Under different abiotic stresses, the synthesis of melatonin is markedly increased suggesting pivotal roles of melatonin in plants enduring stresses. Being an endogenous signaling molecule with antioxidant activity, melatonin alters many physiological responses and is found to be involved in regulating DNA damage responses. However, the molecular mechanisms of melatonin in response to DNA damage have not yet been studied. The present review aims to provide insights into the molecular mechanisms of melatonin in response to DNA damage in plants. We propose that the MAP kinase pathway is involved in regulating melatonin dependent response of plants under DNA damage stress. Where melatonin might activate MAPK via H2 O2 or Ca2+ dependent pathways. The activated MAPK in turn might phosphorylate and activate SOG1 and repressor type MYBs to mitigate DNA damage under abiotic stress.
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Affiliation(s)
- Sukhendu Maity
- Integrative Biology Research Unit (IBRU), Department of Life Sciences, Presidency University, Kolkata, West Bengal, India
| | - Rajkumar Guchhait
- P.G. Department of Zoology, Mahishadal Raj College, Purba Medinipur, West Bengal, India
| | - Kousik Pramanick
- Integrative Biology Research Unit (IBRU), Department of Life Sciences, Presidency University, Kolkata, West Bengal, India
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18
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Gu Q, Xiao Q, Chen Z, Han Y. Crosstalk between Melatonin and Reactive Oxygen Species in Plant Abiotic Stress Responses: An Update. Int J Mol Sci 2022; 23:ijms23105666. [PMID: 35628474 PMCID: PMC9143051 DOI: 10.3390/ijms23105666] [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: 04/21/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023] Open
Abstract
Melatonin acts as a multifunctional molecule that takes part in various physiological processes, especially in the protection against abiotic stresses, such as salinity, drought, heat, cold, heavy metals, etc. These stresses typically elicit reactive oxygen species (ROS) accumulation. Excessive ROS induce oxidative stress and decrease crop growth and productivity. Significant advances in melatonin initiate a complex antioxidant system that modulates ROS homeostasis in plants. Numerous evidences further reveal that melatonin often cooperates with other signaling molecules, such as ROS, nitric oxide (NO), and hydrogen sulfide (H2S). The interaction among melatonin, NO, H2S, and ROS orchestrates the responses to abiotic stresses via signaling networks, thus conferring the plant tolerance. In this review, we summarize the roles of melatonin in establishing redox homeostasis through the antioxidant system and the current progress of complex interactions among melatonin, NO, H2S, and ROS in higher plant responses to abiotic stresses. We further highlight the vital role of respiratory burst oxidase homologs (RBOHs) during these processes. The complicated integration that occurs between ROS and melatonin in plants is also discussed.
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Affiliation(s)
- Quan Gu
- School of Biological Food and Environment, Hefei University, Hefei 230601, China; (Q.G.); (Q.X.)
| | - Qingqing Xiao
- School of Biological Food and Environment, Hefei University, Hefei 230601, China; (Q.G.); (Q.X.)
| | - Ziping Chen
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China
- Correspondence: (Z.C.); (Y.H.)
| | - Yi Han
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
- Correspondence: (Z.C.); (Y.H.)
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19
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Wang H, Ren C, Cao L, Zhao Q, Jin X, Wang M, Zhang M, Yu G, Zhang Y. Exogenous Melatonin Modulates Physiological Response to Nitrogen and Improves Yield in Nitrogen-Deficient Soybean ( Glycine max L. Merr.). FRONTIERS IN PLANT SCIENCE 2022; 13:865758. [PMID: 35651760 PMCID: PMC9149585 DOI: 10.3389/fpls.2022.865758] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
Melatonin (MT) is a key plant growth regulator. To investigate its effect at different growth stages on the yield of soybean under nitrogen deficiency, 100 μM MT was applied to soybean supplemented with zero nitrogen (0N), low nitrogen (LN), and control nitrogen (CK) levels, during the plant vegetative growth (V3) and filling (R5) stages. This study revealed that the application of MT mainly enhanced the nitrogen fixation of plants by increasing the root nodule number and provided more substrates for glutamine synthetase (GS) under 0N supply. However, under the LN supply, more ammonium was assimilated through the direct promotion of nitrate reductase (NR) activity by MT. MT enhanced the activity of ammonium-assimilation-related enzymes, such as GOGAT and GDH, and the expression of their coding genes, promoted the synthesis of chlorophyll and amino acids, and increased the photosynthetic capacity under nitrogen deficiency. Exogenous MT directly upregulated the expression of genes involved in the photosynthetic system and stimulated dry-matter accumulation. Thus, MT alleviated the inhibitory effect of nitrogen deficiency on soybean yield. This mitigation effect was better when MT was applied at the V3 stage, and the seed weight per plant increased by 16.69 and 12.20% at 0N and LN levels, respectively. The results of this study provide a new theoretical basis to apply MT in agriculture to improve the resilience of soybean plants to low nitrogen availability.
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Affiliation(s)
- Huamei Wang
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Chunyuan Ren
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Liang Cao
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Qiang Zhao
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xijun Jin
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Mengxue Wang
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Mingcong Zhang
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Gaobo Yu
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Yuxian Zhang
- Key Laboratory of Soybean Mechanized Production, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, Daqing, China
- National Coarse Cereals Engineering Technology Center, Daqing, China
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20
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Gao T, Liu X, Tan K, Zhang D, Zhu B, Ma F, Li C. Introducing melatonin to the horticultural industry: physiological roles, potential applications, and challenges. HORTICULTURE RESEARCH 2022; 9:uhac094. [PMID: 35873728 PMCID: PMC9297156 DOI: 10.1093/hr/uhac094] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 04/05/2022] [Indexed: 06/08/2023]
Abstract
Melatonin (N-acetyl-5-methoxytryptamine) is an emerging biomolecule that influences horticultural crop growth, flowering, fruit ripening, postharvest preservation, and stress protection. It functions as a plant growth regulator, preservative and antimicrobial agent to promote seed germination, regulate root system architecture, influence flowering and pollen germination, promote fruit production, ensure postharvest preservation, and increase resistance to abiotic and biotic stresses. Here, we highlight the potential applications of melatonin in multiple aspects of horticulture, including molecular breeding, vegetative reproduction, production of virus-free plants, food safety, and horticultural crop processing. We also discuss its effects on parthenocarpy, autophagy, and arbuscular mycorrhizal symbiosis. Together, these many features contribute to the promise of melatonin for improving horticultural crop production and food safety. Effective translation of melatonin to the horticultural industry requires an understanding of the challenges associated with its uses, including the development of economically viable sources.
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Affiliation(s)
- Tengteng Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaomin Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Kexin Tan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Danni Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Bolin Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | | | - Chao Li
- Corresponding authors. E-mail: ,
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Ahmad S, Wang GY, Muhammad I, Chi YX, Zeeshan M, Nasar J, Zhou XB. Interactive Effects of Melatonin and Nitrogen Improve Drought Tolerance of Maize Seedlings by Regulating Growth and Physiochemical Attributes. Antioxidants (Basel) 2022; 11:antiox11020359. [PMID: 35204247 PMCID: PMC8869313 DOI: 10.3390/antiox11020359] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 02/07/2023] Open
Abstract
Melatonin plays an important role in numerous vital life processes of animals and has recently captured the interests of plant biologists because of its potent role in plants. As well as its possible contribution to photoperiodic processes, melatonin is believed to act as a growth regulator and/or as a direct free radical scavenger/indirect antioxidant. However, identifying a precise concentration of melatonin with an optimum nitrogen level for a particular application method to improve plant growth requires identification and clarification. This work establishes inimitable findings by optimizing the application of melatonin with an optimum level of nitrogen, alleviating the detrimental effects of drought stress in maize seedlings. Maize seedlings were subjected to drought stress of 40–45% field capacity (FC) at the five-leaf stage, followed by a soil drenching of melatonin 100 µM and three nitrogen levels (200, 250, and 300 kg ha−1) to consider the changes in maize seedling growth. Our results showed that drought stress significantly inhibited the physiological and biochemical parameters of maize seedlings. However, the application of melatonin with nitrogen remarkably improved the plant growth attributes, chlorophyll pigments, fluorescence, and gas exchange parameters. Moreover, melatonin and nitrogen application profoundly reduced the reactive oxygen species (ROS) accumulation by increasing maize antioxidant and nitrogen metabolism enzyme activities under drought-stress conditions. It was concluded that the mitigating potential of 100 µM melatonin with an optimum level of nitrogen (250 kg N ha−1) improves the plant growth, photosynthetic efficiency, and enzymatic activity of maize seedling under drought-stress conditions.
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22
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Metallothionein1A Regulates Rhizobial Infection and Nodulation in Phaseolus vulgaris. Int J Mol Sci 2022; 23:ijms23031491. [PMID: 35163415 PMCID: PMC8836284 DOI: 10.3390/ijms23031491] [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: 12/24/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
Metallothioneins (MTs) constitute a heterogeneous family of ubiquitous metal ion-binding proteins. In plants, MTs participate in the regulation of cell growth and proliferation, protection against heavy metal stress, oxidative stress responses, and responses to pathogen attack. Despite their wide variety of functions, the role of MTs in symbiotic associations, specifically nodule-fabacean symbiosis, is poorly understood. Here, we analyzed the role of the PvMT1A gene in Phaseolus vulgaris-Rhizobium tropici symbiosis using bioinformatics and reverse genetics approaches. Using in silico analysis, we identified six genes encoding MTs in P. vulgaris, which were clustered into three of the four classes described in plants. PvMT1A transcript levels were significantly higher in roots inoculated with R. tropici at 7 and 30 days post inoculation (dpi) than in non-inoculated roots. Functional analysis showed that downregulating PvMT1A by RNA interference (RNAi) reduced the number of infection events at 7 and 10 dpi and the number of nodules at 14 and 21 dpi. In addition, nodule development was negatively affected in PvMT1A:RNAi transgenic roots, and these nodules displayed a reduced nitrogen fixation rate at 21 dpi. These results strongly suggest that PvMT1A plays an important role in the infection process and nodule development in P. vulgaris during rhizobial symbiosis.
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23
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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: 29] [Impact Index Per Article: 14.5] [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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24
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Zhang X, Feng Y, Jing T, Liu X, Ai X, Bi H. Melatonin Promotes the Chilling Tolerance of Cucumber Seedlings by Regulating Antioxidant System and Relieving Photoinhibition. FRONTIERS IN PLANT SCIENCE 2021; 12:789617. [PMID: 34956288 PMCID: PMC8695794 DOI: 10.3389/fpls.2021.789617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/10/2021] [Indexed: 05/31/2023]
Abstract
Chilling adversely affects the photosynthesis of thermophilic plants, which further leads to a decline in growth and yield. The role of melatonin (MT) in the stress response of plants has been investigated, while the mechanisms by which MT regulates the chilling tolerance of chilling-sensitive cucumber remain unclear. This study demonstrated that MT positively regulated the chilling tolerance of cucumber seedlings and that 1.0 μmol⋅L-1 was the optimum concentration, of which the chilling injury index, electrolyte leakage (EL), and malondialdehyde (MDA) were the lowest, while growth was the highest among all treatments. MT triggered the activity and expression of antioxidant enzymes, which in turn decreased hydrogen peroxide (H2O2) and superoxide anion (O2 ⋅-) accumulation caused by chilling stress. Meanwhile, MT attenuated the chilling-induced decrease, in the net photosynthetic rate (Pn) and promoted photoprotection for both photosystem II (PSII) and photosystem I (PSI), regarding the higher maximum quantum efficiency of PSII (Fv/Fm), actual photochemical efficiency (ΦPSII), the content of active P700 (ΔI/I0), and photosynthetic electron transport. The proteome analysis and western blot data revealed that MT upregulated the protein levels of PSI reaction center subunits (PsaD, PsaE, PsaF, PsaH, and PsaN), PSII-associated protein PsbA (D1), and ribulose-1,5-bisphosphate carboxylase or oxygenase large subunit (RBCL) and Rubisco activase (RCA). These results suggest that MT enhances the chilling tolerance of cucumber through the activation of antioxidant enzymes and the induction of key PSI-, PSII-related and carbon assimilation genes, which finally alleviates damage to the photosynthetic apparatus and decreases oxidative damage to cucumber seedlings under chilling stress.
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Affiliation(s)
| | | | | | | | | | - Huangai Bi
- State Key Laboratory of Crop Biology, Key Laboratory of Crop Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
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25
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Sun H, Cao X, Wang X, Zhang W, Li W, Wang X, Liu S, Lyu D. RBOH-dependent hydrogen peroxide signaling mediates melatonin-induced anthocyanin biosynthesis in red pear fruit. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 313:111093. [PMID: 34763877 DOI: 10.1016/j.plantsci.2021.111093] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/05/2021] [Accepted: 10/12/2021] [Indexed: 05/11/2023]
Abstract
Although several studies have confirmed that exogenous melatonin promotes anthocyanin accumulation, the molecular mechanism of this remains elusive. Here, the signaling cross-talk between melatonin and NADPH oxidase (RBOH) -mediated ROS during anthocyanin biosynthesis were investigated. We found that application of exogenous melatonin not only induced anthocyanin biosynthesis, but also increased endogenous H2O2 and O2‾ content in pear fruits. The effect of melatonin on anthocyanin biosynthesis was abolished by inhibitors of RBOH. We also observed that genes encoding RBOH (PuRBOHF) were ubiquitously and highly expressed after melatonin treatment. Transient PuRBOHF overexpression significantly enhanced anthocyanin accumulation and activated transcription of anthocyanin biosynthesis genes, whereas PuRBOHF silencing repressed melatonin-promoted anthocyanin accumulation and H2O2 production. Moreover, RBOH-derived H2O2 induced PuMYB10 transcription, and PuRBOHF enhanced the PuMYB10-induced activation of the PuUFGT promoter. PuMYB10, in turn, activated PuRBOHF transcription, revealing a positive feedback loop. These results provide molecular evidence supporting the essential roles of PuRBOHF-dependent H2O2 in melatonin-induced anthocyanin accumulation in pears.
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Affiliation(s)
- Huili Sun
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Xiaoyun Cao
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Xinyue Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Wei Zhang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Wenxu Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Xiaoqian Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China.
| | - Siqi Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China
| | - Deguo Lyu
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, PR China.
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26
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Liu F, Lou W, Wang J, Li Q, Shen W. Glutathione produced by γ-glutamyl cysteine synthetase acts downstream of hydrogen to positively influence lateral root branching. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 167:68-76. [PMID: 34333372 DOI: 10.1016/j.plaphy.2021.07.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
Hydrogen gas (H2) mediation of lateral root (LR) branching was previously described. However, related signaling pathway is largely unexplored. In this study, we discovered that application with H2 using hydrogen-rich water, mimicking the responses of exogenous glutathione (GSH), not only enhanced GSH synthesis, but also induced tomato LR development. The changes in the transcripts of auxin signaling-related genes and cell cycle regulatory genes were matched with above phenotypes. The addition of H2 could trigger higher transcript levels of SlGSH1 and SlGSH2, encoding γ-glutamylcysteine synthetase (γ-ECS) and glutathione synthetase (GS), confirming the stimulation of GSH synthesis. These responses were greatly abolished when the inhibitor of γ-ECS was applied. The inhibition in lateral root primordium development, especially in emergence stage, was also observed. Genetic evidence revealed that the defects in GSH production and lateral rooting in Arabidopsis cad2-1, a γ-ECS defective mutant, were obviously abolished in the presence of GSH compared to those in the presence of H2. Further evidence revealed that mRNA levels of target genes elicited by H2 in wild-type, were differentially impaired in mutant plants. Together, above data clearly demonstrated that γ-ECS-dependent GSH production might be closely associated with H2 control of LR branching.
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Affiliation(s)
- Feijie Liu
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Wang Lou
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Junjie Wang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Qiang Li
- Guangdong Province Agricultural Technology Promotion Center, Guangzhou 510520, China.
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China.
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27
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Positive Interaction between H 2O 2 and Ca 2+ Mediates Melatonin-Induced CBF Pathway and Cold Tolerance in Watermelon ( Citrullus lanatus L.). Antioxidants (Basel) 2021; 10:antiox10091457. [PMID: 34573090 PMCID: PMC8471466 DOI: 10.3390/antiox10091457] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/09/2021] [Accepted: 09/09/2021] [Indexed: 11/24/2022] Open
Abstract
Cold stress is a major environmental factor that detrimentally affects plant growth and development. Melatonin has been shown to confer plant tolerance to cold stress through activating the C-REPEAT BINDING FACTOR (CBF) pathway; however, the underlying modes that enable this function remain obscure. In this study, we investigated the role of H2O2 and Ca2+ signaling in the melatonin-induced CBF pathway and cold tolerance in watermelon (Citrullus lanatus L.) through pharmacological, physiological, and genetic approaches. According to the results, melatonin induced H2O2 accumulation, which was associated with the upregulation of respiratory burst oxidase homolog D (ClRBOHD) during the early response to cold stress in watermelon. Besides, melatonin and H2O2 induced the accumulation of cytoplasmic free Ca2+ ([Ca2+]cyt) in response to cold. This was associated with the upregulation of cyclic nucleotide-gated ion channel 2 (ClCNGC2) in watermelon. However, blocking of Ca2+ influx channels abolished melatonin- or H2O2-induced CBF pathway and cold tolerance. Ca2+ also induced ClRBOHD expression and H2O2 accumulation in early response to cold stress in watermelon. Inhibition of H2O2 production in watermelon by RBOH inhibitor or in Arabidopsis by AtRBOHD knockout compromised melatonin-induced [Ca2+]cyt accumulation and melatonin- or Ca2+-induced CBF pathway and cold tolerance. Overall, these findings indicate that melatonin induces RBOHD-dependent H2O2 generation in early response to cold stress. Increased H2O2 promotes [Ca2+]cyt accumulation, which in turn induces H2O2 accumulation via RBOHD, forming a reciprocal positive-regulatory loop that mediates melatonin-induced CBF pathway and subsequent cold tolerance.
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28
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Bian L, Wang Y, Bai H, Li H, Zhang C, Chen J, Xu W. Melatonin-ROS signal module regulates plant lateral root development. PLANT SIGNALING & BEHAVIOR 2021; 16:1901447. [PMID: 33734026 PMCID: PMC8078526 DOI: 10.1080/15592324.2021.1901447] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Lateral root (LR) branches from primary root. LR is vital for plants acquiring water and nutrients from soil, especially under stress conditions. LR development involves the complicated signaling network, which has not yet been fully understood. Melatonin, a novel endogenous plant regulator, plays a role in the regulation of LR development. However, we still have limited knowledge about melatonin-modulated signaling during LR development. Our recent study identifies that reactive oxygen species (ROS) acts as downstream signaling of melatonin to facilitate LR development. The recently identified receptor of melatonin in plants controls a signaling module involving G protein, ROS, and Ca2+. Based on these findings, we propose a novel signaling network for LR development controlled by melatonin.
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Affiliation(s)
- Liping Bian
- Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yousheng Wang
- China Tobacco Jiangsu Industrial Co. LTD, Nanjing, China
| | - Hongwu Bai
- Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Hui Li
- Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Cunzheng Zhang
- Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Jian Chen
- Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
- CONTACT Jian Chen ; Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing210014, China
| | - Weimin Xu
- Central Laboratory, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Weimin Xu Central Laboratory, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
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29
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Lee HY, Back K. Melatonin Regulates Chloroplast Protein Quality Control via a Mitogen-Activated Protein Kinase Signaling Pathway. Antioxidants (Basel) 2021; 10:antiox10040511. [PMID: 33806011 PMCID: PMC8064490 DOI: 10.3390/antiox10040511] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 12/11/2022] Open
Abstract
Serotonin N-acetyltransferase 1 (SNAT1), the penultimate enzyme for melatonin biosynthesis has shown N-acetyltransferase activity toward multiple substrates, including histones, serotonin, and plastid proteins. Under two different light conditions such as 50 or 100 μmol m−2 s−1, a SNAT1-knockout (snat1) mutant of Arabidopsis thaliana ecotype Columbia (Col-0) exhibited small size phenotypes relative over wild-type (WT) Arabidopsis Col-0. Of note, the small phenotype is stronger when growing at the 50 μmol m−2 s−1, exhibiting a dwarfism phenotype and delayed flowering. The snat1 Arabidopsis Col-0 accumulated less starch than the WT Col-0. Moreover, snat1 exhibited lower Lhcb1, Lhcb4, and RBCL protein levels, compared with the WT Col-0, but no changes in the corresponding transcripts, suggesting the involvement of melatonin in chloroplast protein quality control (CPQC). Accordingly, caseinolytic protease (Clp) and chloroplast heat shock proteins (CpHSPs), two key proteins involved in CPQC, as well as ROS defense were suppressed in snat1. In contrast, exogenous melatonin treatment induced expression of Clp, CpHSP, APX1, and GST, but not other growth-related genes such as DWF4, KS, and IAA1. Finally, the induction of ClpR1, APX1, and GST1 in response to melatonin was inhibited in the mitogen-activated protein kinase (MAPK) knockdown Arabidopsis (mpk3/6), suggesting that melatonin-mediated CPQC was mediated, in part, by the MAPK signaling cascade. These results suggest that melatonin is involved in CPQC, which plays a pivotal role in starch synthesis in plants.
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30
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Li H, Guo Y, Lan Z, Xu K, Chang J, Ahammed GJ, Ma J, Wei C, Zhang X. Methyl jasmonate mediates melatonin-induced cold tolerance of grafted watermelon plants. HORTICULTURE RESEARCH 2021; 8:57. [PMID: 33750773 PMCID: PMC7943586 DOI: 10.1038/s41438-021-00496-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/09/2021] [Accepted: 01/14/2021] [Indexed: 05/20/2023]
Abstract
Root-shoot communication has a critical role in plant adaptation to environmental stress. Grafting is widely applied to enhance the abiotic stress tolerance of many horticultural crop species; however, the signal transduction mechanism involved in this tolerance remains unknown. Here, we show that pumpkin- or figleaf gourd rootstock-enhanced cold tolerance of watermelon shoots is accompanied by increases in the accumulation of melatonin, methyl jasmonate (MeJA), and hydrogen peroxide (H2O2). Increased melatonin levels in leaves were associated with both increased melatonin in rootstocks and MeJA-induced melatonin biosynthesis in leaves of plants under cold stress. Exogenous melatonin increased the accumulation of MeJA and H2O2 and enhanced cold tolerance, while inhibition of melatonin accumulation attenuated rootstock-induced MeJA and H2O2 accumulation and cold tolerance. MeJA application induced H2O2 accumulation and cold tolerance, but inhibition of JA biosynthesis abolished rootstock- or melatonin-induced H2O2 accumulation and cold tolerance. Additionally, inhibition of H2O2 production attenuated MeJA-induced tolerance to cold stress. Taken together, our results suggest that melatonin is involved in grafting-induced cold tolerance by inducing the accumulation of MeJA and H2O2. MeJA subsequently increases melatonin accumulation, forming a self-amplifying feedback loop that leads to increased H2O2 accumulation and cold tolerance. This study reveals a novel regulatory mechanism of rootstock-induced cold tolerance.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Yanliang Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Zhixiang Lan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Kai Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Jingjing Chang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, 471023, Luoyang, Henan, China
| | - Jianxiang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Chunhua Wei
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China
| | - Xian Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, 712100, Yangling, Shaanxi, China.
- State Key Laboratory of Vegetable Germplasm Innovation, 300384, Tianjin, China.
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31
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Li H, Guo Y, Lan Z, Zhang Z, Ahammed GJ, Chang J, Zhang Y, Wei C, Zhang X. Melatonin antagonizes ABA action to promote seed germination by regulating Ca 2+ efflux and H 2O 2 accumulation. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 303:110761. [PMID: 33487347 DOI: 10.1016/j.plantsci.2020.110761] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 11/12/2020] [Accepted: 11/14/2020] [Indexed: 05/19/2023]
Abstract
Seed germination is a vital stage in the plant life-cycle that greatly contributes to plant establishment. Melatonin has been shown to promote seed germination under various environmental stresses; however, the mechanism remains largely underexplored. Here, we reported that melatonin antagonized abscisic acid (ABA) to promote seed germination by regulating ABA and gibberellic acid (GA3) balance. Transcriptomic analysis revealed that such a role of melatonin was associated with Ca2+ and redox signaling. Melatonin pretreatment induced Ca2+ efflux accompanied by an up-regulation of vacuolar H+/Ca2+ antiporter 3 (CAX3). AtCAX3 deletion in Arabidopsis exhibited reduced Ca2+ efflux. Inhibition of Ca2+ efflux in the seeds of melon and Arabidopsis mutant AtCAX3 compromised melatonin-induced germination under ABA stress. Melatonin increased H2O2 accumulation, and H2O2 pretreatment decreased ABA/GA3 ratio and promoted seed germination under ABA stress. However, complete inhibition of H2O2 accumulation abolished melatonin-induced ABA and GA3 balance and seed germination. Our study reveals a novel regulatory mechanism in which melatonin counteracts ABA to induce seed germination that essentially involves CAX3-mediated Ca2+ efflux and H2O2 accumulation, which, in turn, regulate ABA and GA3 balance by promoting ABA catabolism and/or GA3 biosynthesis.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Yanliang Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Zhixiang Lan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Zixing Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Golam Jalal Ahammed
- College of Forestry, Henan University of Science and Technology, Luoyang, 471023, Henan, PR China
| | - Jingjing Chang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Yong Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Chunhua Wei
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China
| | - Xian Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; State Key Laboratory of Vegetable Germplasm Innovation, Tianjin, 300384, PR China.
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Su J, Yang X, Shao Y, Chen Z, Shen W. Molecular hydrogen-induced salinity tolerance requires melatonin signalling in Arabidopsis thaliana. PLANT, CELL & ENVIRONMENT 2021; 44:476-490. [PMID: 33103784 DOI: 10.1111/pce.13926] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 05/21/2023]
Abstract
Melatonin (MT) plays positive roles in salinity stress tolerance. However, the upstream signalling components that regulate MT are poorly understood. Here, we report that endogenous MT acts downstream of molecular hydrogen (H2 ) in the salinity response in Arabidopsis. The addition of hydrogen-rich water and expression of the hydrogenase1 gene (CrHYD1) from Chlamydomonas reinhardtii increased endogenous H2 and MT levels and enhanced salinity tolerance. These results were not observed in the absence of serotonin N-acetyltransferase gene (SNAT). H2 increased the levels of SNAT transcripts in the wild-type and CrHYD1 lines, which had lower Na+ /K+ ratios and higher levels of ion transport-related gene transcripts. These changes were not observed in atsnat/CrHYD1-4 hybrids. The increased MT-dependent Na+ extrusion observed in the CrHYD1 plants resulted, at least in part, from enhanced Na+ /H+ antiport across the plasma membrane. The endogenous H2 -induced MT-dependent regulation of ion and redox homeostasis was impaired in the atsnat/CrHYD1-4 hybrids. Taken together, these results demonstrate that MT-induced salinity tolerance is induced by a H2 signalling cascade that regulates ion and redox homeostasis in response to salinity.
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Affiliation(s)
- Jiuchang Su
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xinghao Yang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yudong Shao
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Ziping Chen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, China
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Murch SJ, Erland LAE. A Systematic Review of Melatonin in Plants: An Example of Evolution of Literature. FRONTIERS IN PLANT SCIENCE 2021; 12:683047. [PMID: 34249052 PMCID: PMC8270005 DOI: 10.3389/fpls.2021.683047] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/10/2021] [Indexed: 05/06/2023]
Abstract
Melatonin (N-acetyl-5-methoxy-tryptamine) is a mammalian neurohormone, antioxidant and signaling molecule that was first discovered in plants in 1995. The first studies investigated plant melatonin from a human perspective quantifying melatonin in foods and medicinal plants and questioning whether its presence could explain the activity of some plants as medicines. Starting with these first handful of studies in the late 1990s, plant melatonin research has blossomed into a vibrant and active area of investigation and melatonin has been found to play critical roles in mediating plant responses and development at every stage of the plant life cycle from pollen and embryo development through seed germination, vegetative growth and stress response. Here we have utilized a systematic approach in accordance with the preferred reporting items for systematic reviews and meta-analyses (PRISMA) protocols to reduce bias in our assessment of the literature and provide an overview of the current state of melatonin research in plants, covering 1995-2021. This review provides an overview of the biosynthesis and metabolism of melatonin as well as identifying key themes including: abiotic stress responses, root development, light responses, interkingdom communication, phytohormone and plant signaling. Additionally, potential biases in the literature are investigated and a birefringence in the literature between researchers from plant and medical based which has helped to shape the current state of melatonin research. Several exciting new opportunities for future areas of melatonin research are also identified including investigation of non-crop and non-medicinal species as well as characterization of melatonin signaling networks in plants.
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Sun C, Liu L, Wang L, Li B, Jin C, Lin X. Melatonin: A master regulator of plant development and stress responses. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:126-145. [PMID: 32678945 DOI: 10.1111/jipb.12993] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 07/16/2020] [Indexed: 05/18/2023]
Abstract
Melatonin is a pleiotropic molecule with multiple functions in plants. Since the discovery of melatonin in plants, numerous studies have provided insight into the biosynthesis, catabolism, and physiological and biochemical functions of this important molecule. Here, we describe the biosynthesis of melatonin from tryptophan, as well as its various degradation pathways in plants. The identification of a putative melatonin receptor in plants has led to the hypothesis that melatonin is a hormone involved in regulating plant growth, aerial organ development, root morphology, and the floral transition. The universal antioxidant activity of melatonin and its role in preserving chlorophyll might explain its anti-senescence capacity in aging leaves. An impressive amount of research has focused on the role of melatonin in modulating postharvest fruit ripening by regulating the expression of ethylene-related genes. Recent evidence also indicated that melatonin functions in the plant's response to biotic stress, cooperating with other phytohormones and well-known molecules such as reactive oxygen species and nitric oxide. Finally, great progress has been made towards understanding how melatonin alleviates the effects of various abiotic stresses, including salt, drought, extreme temperature, and heavy metal stress. Given its diverse roles, we propose that melatonin is a master regulator in plants.
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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, 310058, China
| | - Lijuan Liu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Luxuan Wang
- Department of Agriculture and Environment, McGill University, Montreal, Quebec, H9X 3V9, Canada
| | - Baohai Li
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chongwei Jin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xianyong Lin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
- Key Laboratory of Subtropical Soil Science and Plant Nutrition of Zhejiang Province, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
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Back K. Melatonin metabolism, signaling and possible roles in plants. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:376-391. [PMID: 32645752 DOI: 10.1111/tpj.14915] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 06/15/2020] [Accepted: 06/24/2020] [Indexed: 05/20/2023]
Abstract
Melatonin is a multifunctional biomolecule found in both animals and plants. In this review, the biosynthesis, levels, signaling, and possible roles of melatonin and its metabolites in plants is summarized. Tryptamine 5-hydroxylase (T5H), which catalyzes the conversion of tryptamine into serotonin, has been proposed as a target to create a melatonin knockout mutant presenting a lesion-mimic phenotype in rice. With a reduced anabolic capacity for melatonin biosynthesis and an increased catabolic capacity for melatonin metabolism, all plants generally maintain low melatonin levels. Some plants, including Arabidopsis and Nicotiana tabacum (tobacco), do not possess tryptophan decarboxylase (TDC), the first committed step enzyme required for melatonin biosynthesis. Major melatonin metabolites include cyclic 3-hydroxymelatonin (3-OHM) and 2-hydroxymelatonin (2-OHM). Other melatonin metabolites such as N1 -acetyl-N2 -formyl-5-methoxykynuramine (AFMK), N-acetyl-5-methoxykynuramine (AMK) and 5-methoxytryptamine (5-MT) are also produced when melatonin is applied to Oryza sativa (rice). The signaling pathways of melatonin and its metabolites act via the mitogen-activated protein kinase (MAPK) cascade, possibly with Cand2 acting as a melatonin receptor, although the integrity of Cand2 remains controversial. Melatonin mediates many important functions in growth stimulation and stress tolerance through its potent antioxidant activity and function in activating the MAPK cascade. The concentration distribution of melatonin metabolites appears to be species specific because corresponding enzymes such as M2H, M3H, catalases, indoleamine 2,3-dioxygenase (IDO) and N-acetylserotonin deacetylase (ASDAC) are differentially expressed among plant species and even among different tissues within species. Differential levels of melatonin and its metabolites can lead to differential physiological effects among plants when melatonin is either applied exogenously or overproduced through ectopic overexpression.
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Affiliation(s)
- Kyoungwhan Back
- Department of Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, 61186, Republic of Korea
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Bannoud F, Bellini C. Adventitious Rooting in Populus Species: Update and Perspectives. FRONTIERS IN PLANT SCIENCE 2021; 12:668837. [PMID: 34093625 PMCID: PMC8174304 DOI: 10.3389/fpls.2021.668837] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/26/2021] [Indexed: 05/11/2023]
Abstract
Populus spp. are among the most economically important species worldwide. These trees are used not only for wood and fiber production, but also in the rehabilitation of degraded lands. Since they are clonally propagated, the ability of stem cuttings to form adventitious roots is a critical point for plant establishment and survival in the field, and consequently for the forest industry. Adventitious rooting in different Populus clones has been an agronomic trait targeted in breeding programs for many years, and many factors have been identified that affect this quantitative trait. A huge variation in the rooting capacity has been observed among the species in the Populus genus, and the responses to some of the factors affecting this trait have been shown to be genotype-dependent. This review analyses similarities and differences between results obtained from studies examining the role of internal and external factors affecting rooting of Populus species cuttings. Since rooting is the most important requirement for stand establishment in clonally propagated species, understanding the physiological and genetic mechanisms that promote this trait is essential for successful commercial deployment.
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Affiliation(s)
- Florencia Bannoud
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
- *Correspondence: Florencia Bannoud,
| | - Catherine Bellini
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, Versailles, France
- Catherine Bellini,
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Liu J, Shabala S, Zhang J, Ma G, Chen D, Shabala L, Zeng F, Chen ZH, Zhou M, Venkataraman G, Zhao Q. Melatonin improves rice salinity stress tolerance by NADPH oxidase-dependent control of the plasma membrane K + transporters and K + homeostasis. PLANT, CELL & ENVIRONMENT 2020; 43:2591-2605. [PMID: 32196121 DOI: 10.1111/pce.13759] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/29/2020] [Accepted: 03/02/2020] [Indexed: 05/18/2023]
Abstract
This study aimed to reveal the mechanistic basis of the melatonin-mediated amelioration of salinity stress in plants. Electrophysiological experiments revealed that melatonin decreased salt-induced K+ efflux (a critical determinant of plant salt tolerance) in a dose- and time-dependent manner and reduced sensitivity of the plasma membrane K+ -permeable channels to hydroxyl radicals. These beneficial effects of melatonin were abolished by NADPH oxidase blocker DPI. Transcriptome analyses revealed that melatonin induced 585 (448 up- and 137 down-regulated) and 59 (54 up- and 5 down-regulated) differentially expressed genes (DEGs) in the root tip and mature zone, respectively. The most noticeable changes in the root tip were melatonin-induced increase in the expression of several DEGs encoding respiratory burst NADPH oxidases (OsRBOHA and OsRBOHF), calcineurin B-like/calcineurin B-like-interacting protein kinase (OsCBL/OsCIPK), and calcium-dependent protein kinase (OsCDPK) under salt stress. Melatonin also enhanced the expression of potassium transporter genes (OsAKT1, OsHAK1, and OsHAK5). Taken together, these results indicate that melatonin improves salt tolerance in rice by enabling K+ retention in roots, and that the latter process is conferred by melatonin scavenging of hydroxyl radicals and a concurrent OsRBOHF-dependent ROS signalling required to activate stress-responsive genes and increase the expression of K+ uptake transporters in the root tip.
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Affiliation(s)
- Juan Liu
- Collaborative Innovation Centre of Henan Grain Crops, Henan Key Laboratory of Rice Biology, Henan Agricultural University, Zhengzhou, China
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania, Australia
| | - Sergey Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania, Australia
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan, China
| | - Jing Zhang
- Collaborative Innovation Centre of Henan Grain Crops, Henan Key Laboratory of Rice Biology, Henan Agricultural University, Zhengzhou, China
| | - Guohui Ma
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
| | - Dandan Chen
- Collaborative Innovation Centre of Henan Grain Crops, Henan Key Laboratory of Rice Biology, Henan Agricultural University, Zhengzhou, China
| | - Lana Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania, Australia
| | - Fanrong Zeng
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Zhong-Hua Chen
- School of Science, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
- Collaborative Innovation Centre for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Meixue Zhou
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania, Australia
| | - Gayatri Venkataraman
- Plant Molecular Biology Laboratory, M.S. Swaminathan Research Foundation, III Cross Street, Taramani Institutional Area, Chennai, India
| | - Quanzhi Zhao
- Collaborative Innovation Centre of Henan Grain Crops, Henan Key Laboratory of Rice Biology, Henan Agricultural University, Zhengzhou, China
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Tan DX, Reiter RJ. An evolutionary view of melatonin synthesis and metabolism related to its biological functions in plants. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:4677-4689. [PMID: 32413108 DOI: 10.1093/jxb/eraa235] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/07/2020] [Indexed: 05/22/2023]
Abstract
Plant melatonin research is a rapidly developing field. A variety of isoforms of melatonin's biosynthetic enzymes are present in different plants. Due to the different origins, they exhibit independent responses to the variable environmental stimuli. The locations for melatonin biosynthesis in plants are chloroplasts and mitochondria. These organelles have inherited their melatonin biosynthetic capacities from their bacterial ancestors. Under ideal conditions, chloroplasts are the main sites of melatonin biosynthesis. If the chloroplast pathway is blocked for any reason, the mitochondrial pathway will be activated for melatonin biosynthesis to maintain its production. Melatonin metabolism in plants is a less studied field; its metabolism is quite different from that of animals even though they share similar metabolites. Several new enzymes for melatonin metabolism in plants have been cloned and these enzymes are absent in animals. It seems that the 2-hydroxymelatonin is a major metabolite of melatonin in plants and its level is ~400-fold higher than that of melatonin. In the current article, from an evolutionary point of view, we update the information on plant melatonin biosynthesis and metabolism. This review will help the reader to understand the complexity of these processes and promote research enthusiasm in these fields.
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Affiliation(s)
| | - Russel J Reiter
- Department of Anatomy and Cell System, UT Health San Antonio, San Antonio, Texas, USA
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Chen X, Laborda P, Liu F. Exogenous Melatonin Enhances Rice Plant Resistance Against Xanthomonas oryzae pv. oryzae. PLANT DISEASE 2020; 104:1701-1708. [PMID: 32357119 DOI: 10.1094/pdis-11-19-2361-re] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Rice bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzae, is one of the most serious diseases of rice. In this study we found that exogenous melatonin can increase rice resistance to BB. Treatment of rice plants with exogenous melatonin (20 µg/ml) increased nitrate reductase, nitric oxide synthase, and peroxidase activity, enabling high intracellular concentrations of melatonin, nitric oxide, and H2O2. The expression of NPR1, a key regulator in the salicylic acid signaling pathway, was upregulated more than 10-fold when the plants were challenged with melatonin. Similarly, the messenger RNA level of PDF1.2, a jasmonic acid-induced defense marker, was 15 times higher in the treated plants than in the control plants. Moreover, three pathogenesis-related proteins, PR1b, PR8a, and PR9, were upregulated 20-fold in the presence of melatonin. The application of melatonin (100 µg/ml) to soil-grown rice reduced the incidence of BB by 86.21%. Taken together, these results not only provide a better understanding of melatonin-mediated innate immunity to X. oryzae pv. oryzae in rice but also represent a promising cultivation strategy to protect rice against X. oryzae pv. oryzae infection.
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Affiliation(s)
- Xian Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, People's Republic of China
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, People's Republic of China
| | - Pedro Laborda
- School of Life Sciences, Nantong University, Nantong 226019, People's Republic of China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, People's Republic of China
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
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Zhang S, Li C, Ren H, Zhao T, Li Q, Wang S, Zhang Y, Xiao F, Wang X. BAK1 Mediates Light Intensity to Phosphorylate and Activate Catalases to Regulate Plant Growth and Development. Int J Mol Sci 2020; 21:ijms21041437. [PMID: 32093294 PMCID: PMC7073115 DOI: 10.3390/ijms21041437] [Citation(s) in RCA: 16] [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: 01/11/2020] [Revised: 02/08/2020] [Accepted: 02/18/2020] [Indexed: 12/31/2022] Open
Abstract
BAK1 (brassinosteroid-insensitive 1 (BRI1) associated receptor kinase 1) plays major roles in multiple signaling pathways as a coreceptor to regulate plant growth and development and stress response. However, the role of BAK1 in high light signaling is still poorly understood. Here we observed that overexpression of BAK1 in Arabidopsis interferes with the function of high light in promoting plant growth and development, which is independent of the brassinosteroid (BR) signaling pathway. Further investigation shows that high light enhances the phosphorylation of BAK1 and catalase activity, thereby reducing hydrogen peroxide (H2O2) accumulation. Catalase3 (CAT3) is identified as a BAK1-interacting protein by affinity purification and LC-MS/MS analysis. Biochemical analysis confirms that BAK1 interacts with and phosphorylates all three catalases (CAT1, CAT2, and CAT3) of the Arabidopsis genome, and the trans-phosphorylation sites of three catalases with BAK1-CD are identified by LC-MS/MS in vitro. Genetic analyses reveal that the BAK1 overexpression plants knocked out all the three CAT genes completely abolishing the effect of BAK1 on suppression of high light-promoted growth. This study first unravels the role of BAK1 in mediating high light-triggered activation of CATs, thereby degrading H2O2 and regulating plant growth and development in Arabidopsis.
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Affiliation(s)
- Shan Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
- Department of Plant Sciences, University of Idaho, Moscow, ID 83844, USA
| | - Cheng Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
- Department of Plant Sciences, University of Idaho, Moscow, ID 83844, USA
| | - Haihua Ren
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
| | - Tong Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
| | - Qi Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
| | - Shufen Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
| | - Yanfeng Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China
| | - Fangming Xiao
- Department of Plant Sciences, University of Idaho, Moscow, ID 83844, USA
- Correspondence: (F.X.); (X.W.); Tel.: +208-885-0120 (F.X.); +86-18092867224 (X.W.)
| | - Xiaofeng Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; (S.Z.); (C.L.); (H.R.); (T.Z.); (Q.L.); (S.W.)
- Correspondence: (F.X.); (X.W.); Tel.: +208-885-0120 (F.X.); +86-18092867224 (X.W.)
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Seed Pre-Soaking with Melatonin Improves Wheat Yield by Delaying Leaf Senescence and Promoting Root Development. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10010084] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The effects of exogenous application of melatonin (MEL) on promoting plant growth and alleviating environmental stresses are already known, but the potential value in crop production is still poorly understood. In this study, the effects of seed pre-soaking with MEL on winter wheat (Triticum aestivum L.) growth and yield were investigated in a continuous two-year pot experiment and another year of field experimentation. Results showed that seed pre-soaking with different concentrations of MEL (10, 100 and 500 μM) for 24 h increased grain yields per plant from 29% to 80% in pot experiment and increased grain yield per area from 4–19% in field experiment, compared with the controls. Further analysis showed that the beneficial effects of MEL on improving wheat grain yield can be ascribed to: (1) increased spike number by enhancing tiller number; (2) enhanced carbon assimilation capacity by maintaining large leaf area, high photosynthetic rate and delaying leaf senescence; (3) promoted growth in root system. The result of this study suggests that MEL could be considered as an effective plant growth regulator for improving grain production in winter wheat.
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Mukherjee S. Insights into nitric oxide-melatonin crosstalk and N-nitrosomelatonin functioning in plants. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:6035-6047. [PMID: 31429913 DOI: 10.1093/jxb/erz375] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/06/2019] [Indexed: 05/23/2023]
Abstract
Similar to animal systems, plants have been suggested to possess both positive and antagonistic interactions between nitric oxide (NO) and melatonin. This review summarizes the current understanding of NO-melatonin crosstalk in plants with regard to redox homoeostasis, regulation of gene expression, and developmental changes. It also addresses the possible role of N-nitrosomelatonin (NOmela), which is likely to be associated with redox signaling and long-distance communication. Localization and quantification of NOmela are expected to add new insights into its precise role in plants. Methodological advances in imaging, isolation, and quantification of such a transient molecule require further attention. The quest for the biological role of NOmela in plants should lure physiologists to pursue investigations to obtain solid experimental evidence.
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Affiliation(s)
- Soumya Mukherjee
- Department of Botany, Jangipur College, University of Kalyani, West Bengal 742213, India
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43
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Lee HY, Lee K, Back K. Knockout of Arabidopsis Serotonin N-Acetyltransferase-2 Reduces Melatonin Levels and Delays Flowering. Biomolecules 2019; 9:E712. [PMID: 31698875 PMCID: PMC6920769 DOI: 10.3390/biom9110712] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 10/30/2019] [Accepted: 11/04/2019] [Indexed: 11/26/2022] Open
Abstract
Melatonin plays roles in both plant growth and defense. Serotonin N-acetyltransferase (SNAT) catalyzes formation of N-acetylserotonin (NAS) from serotonin. Plants contain two SNAT isogenes, which exhibit low-level amino acid homology. We studied the ArabidopsisthalianaSNAT2 (AtSNAT2) gene; we prepared recombinant SNAT2 protein and characterized a snat2 knockout mutant. The SNAT2 protein exhibited 27% amino acid homology with SNAT1; the Km was 232 μM and the Vmax was 2160 pmol/min/mg protein. Melatonin inhibited SNAT enzyme activity in vitro. SNAT2 mRNA was abundantly expressed in flowers; the melatonin content of flowers of the snat2 mutant was significantly less than that of wild-type flowers. The mutant exhibited delayed flowering and reductions in leaf area and biomass compared to the wild type. Delayed flowering was attributable to reductions in the expression levels of the gibberellin biosynthetic genes ent-kaurene synthase (KS) and FLOWERING LOCUS T (FT).
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Affiliation(s)
| | | | - Kyoungwhan Back
- Division of Food Technology and Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Korea; (H.Y.L.); (K.L.)
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Chen J, Li H, Yang K, Wang Y, Yang L, Hu L, Liu R, Shi Z. Melatonin facilitates lateral root development by coordinating PAO-derived hydrogen peroxide and Rboh-derived superoxide radical. Free Radic Biol Med 2019; 143:534-544. [PMID: 31520769 DOI: 10.1016/j.freeradbiomed.2019.09.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/10/2019] [Accepted: 09/10/2019] [Indexed: 10/26/2022]
Abstract
Melatonin, a phytochemical, can regulate lateral root (LR) formation, but the downstream signaling of melatonin remains elusive. Here we investigated the roles of hydrogen peroxide (H2O2) and superoxide radical (O2•‾) in melatonin-promoted LR formation in tomato (Solanum lycopersicum) roots by using physiological, histochemical, bioinformatic, and biochemical approaches. The increase in endogenous melatonin level stimulated reactive oxygen species (ROS)-dependent development of lateral root primordia (LRP) and LR. Melatonin promoted LRP/LR formation and modulated the expression of cell cycle genes (SlCDKA1, SlCYCD3;1, and SlKRP2) by stimulating polyamine oxidase (PAO)-dependent H2O2 production and respiratory burst oxidase homologue (Rboh)-dependent O2•‾ production, respectively. Screening of SlPAOs and SlRbohs gene family combined with gene expression analysis suggested that melatonin-promoted LR formation was correlated to the upregulation of SlPAO1, SlRboh3, and SlRboh4 in LR-emerging zone. Transient expression analysis confirmed that SlPAO1 was able to produce H2O2 while SlRboh3 and SlRboh4 were capable of producing O2•‾. Melatonin-ROS signaling cassette was also found in the regulation of LR formation in rice root and lateral hyphal branching in fungi. These results suggested that SlPAO1-H2O2 and SlRboh3/4-O2•‾ acted as downstream of melatonin to regulate the expression of cell cycle genes, resulting in LRP initiation and LR development. Such findings uncover one of the regulatory pathways for melatonin-regulated LR formation, which extends our knowledge for melatonin-regulated plant intrinsic physiology.
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Affiliation(s)
- Jian Chen
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
| | - Hui Li
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Kang Yang
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yongzhu Wang
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Lifei Yang
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Liangbin Hu
- Department of Food Science, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Ruixian Liu
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Zhiqi Shi
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, 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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Chen L, Tian J, Wang S, Song T, Zhang J, Yao Y. Application of melatonin promotes anthocyanin accumulation in crabapple leaves. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 142:332-341. [PMID: 31377482 DOI: 10.1016/j.plaphy.2019.07.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/29/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Anthocyanins are a class of compounds that are widespread in plants, where they provide protection against stresses, and are also beneficial to human health as dietary components. Melatonin application is known to affect anthocyanin production, but the relationship between anthocyanin and melatonin is still unclear. In this study, we analyzed anthocyanin contents and the expression levels of anthocyanin biosynthetic and regulatory genes in tissue cultured plantlets of two Malus crabapple cultivars following various exogenous melatonin treatments under light and dark conditions. The application of exogenous melatonin not only promoted anthocyanin accumulation in leaves, but also increased the contents of flavonols and proanthocyanins (PAs), via a process that was not dependent on light. Quantitative real time PCR (qRT-PCR) analyses indicated that the expression of flavonoid biosynthetic genes, flavonoid related transcription factors and melatonin biosynthetic genes was induced by melatonin. We propose that anthocyanin biosynthesis is regulated by melatonin in crabapple leaves via the expression of flavonoid related transcription factors. This study provides insight into the mechanism of melatonin induction of anthocyanin biosynthesis in woody plants, and suggests that pretreatment with melatonin may represent a cultivation strategy to increase the flavonoid contents of plants.
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Affiliation(s)
- Li Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China; Plant Science and Technology College, Beijing University of Agriculture, Beijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
| | - Ji Tian
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China; Plant Science and Technology College, Beijing University of Agriculture, Beijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
| | - Sifan Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China; Plant Science and Technology College, Beijing University of Agriculture, Beijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
| | - Tingting Song
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China; Plant Science and Technology College, Beijing University of Agriculture, Beijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
| | - Jie Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China; Plant Science and Technology College, Beijing University of Agriculture, Beijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China.
| | - Yuncong Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China; Plant Science and Technology College, Beijing University of Agriculture, Beijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China.
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Zhu CQ, Hu WJ, Cao XC, Zhu LF, Bai ZG, Liang QD, Huang J, Jin QY, Zhang JH. Hydrogen peroxide alleviates P starvation in rice by facilitating P remobilization from the root cell wall. JOURNAL OF PLANT PHYSIOLOGY 2019; 240:153003. [PMID: 31279219 DOI: 10.1016/j.jplph.2019.153003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 06/17/2019] [Accepted: 06/17/2019] [Indexed: 06/09/2023]
Abstract
Phosphorus (P) deficiency limits rice production. Increasing the remobilization of P stored in the root cell wall is an efficient way to alleviate P starvation in rice. In the current study, we found that the addition of 50 μM H2O2 significantly increased soluble P content in rice. H2O2 stimulated pectin biosynthesis and increased pectin methylesterase (PME) activity, thus stimulating the release of P from the cell wall in roots. H2O2 also regulates internal P homeostasis by increasing the expression of P transporter genes OsPT2, OsPT6, and OsPT8 at different treatment times. In addition, the H2O2 treatment increased the expression of nitrate reductase (NR) genes OsNIA1 and OsNIA2 and the activity of NR, then increased the accumulation of nitric oxide (NO) in the rice root. The application of the NO donor sodium nitroprusside (SNP) and the H2O2 scavenger 4-hydroxy-TEMPO significantly increased soluble P content by increasing pectin levels and PME activity to enhance the remobilization of P from the cell wall. However, the addition of NO scavenger 2-(4-carboxyphenyl)-4, 4, 5, 5-tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) with and without H2O2 had the opposite effect, suggesting that NO functions downstream of H2O2 to increase the remobilization of cell wall P in rice.
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Affiliation(s)
- Chun Quan Zhu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Wen Jun Hu
- Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
| | - Xiao Chuang Cao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Lian Feng Zhu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Zhi Gang Bai
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Qing Duo Liang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Jie Huang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Qian Yu Jin
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
| | - Jun Hua Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.
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Deng Y, Wang C, Wang N, Wei L, Li W, Yao Y, Liao W. Roles of Small-Molecule Compounds in Plant Adventitious Root Development. Biomolecules 2019; 9:E420. [PMID: 31466349 PMCID: PMC6770160 DOI: 10.3390/biom9090420] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/23/2019] [Accepted: 08/27/2019] [Indexed: 01/31/2023] Open
Abstract
Adventitious root (AR) is a kind of later root, which derives from stems and leaf petioles of plants. Many different kinds of small signaling molecules can transmit information between cells of multicellular organisms. It has been found that small molecules can be involved in many growth and development processes of plants, including stomatal movement, flowering, fruit ripening and developing, and AR formation. Therefore, this review focuses on discussing the functions and mechanisms of small signaling molecules in the adventitious rooting process. These compounds, such as nitric oxide (NO), hydrogen gas (H2), hydrogen sulfide (H2S), carbon monoxide (CO), methane (CH4), ethylene (ETH), and hydrogen peroxide (H2O2), can be involved in the induction of AR formation or development. This review also sums the crosstalk between these compounds. Besides, those signaling molecules can regulate the expressions of some genes during AR development, including cell division genes, auxin-related genes, and adventitious rooting-related genes. We conclude that these small-molecule compounds enhance adventitious rooting by regulating antioxidant, water balance, and photosynthetic systems as well as affecting transportation and distribution of auxin, and these compounds further conduct positive effects on horticultural plants under environmental stresses. Hence, the effect of these molecules in plant AR formation and development is definitely a hot issue to explore in the horticultural study now and in the future.
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Affiliation(s)
- Yuzheng Deng
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Chunlei Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Ni Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Lijuan Wei
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Weifang Li
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Yandong Yao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
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Wang J, Wang X, He Y, Jia L, Yang CS, Reiter RJ, Zhang J. Antioxidant and Pro-Oxidant Activities of Melatonin in the Presence of Copper and Polyphenols In Vitro and In Vivo. Cells 2019; 8:cells8080903. [PMID: 31443259 PMCID: PMC6721667 DOI: 10.3390/cells8080903] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 12/13/2022] Open
Abstract
Melatonin is a well-documented antioxidant. Physicochemical analysis using the density functional theory suggests that melatonin is a copper chelating agent; however, experimental evidence is still in demand. The present study investigated the influence of melatonin on reactive oxygen species (ROS) generated from polyphenol autoxidation in the presence of copper. Surprisingly, we found that melatonin paradoxically enhanced ROS formation in a redox system containing low concentrations of copper and quercetin (Que) or (−)-epigallocatechin-3-gallate (EGCG), due to reduction of cupric to cuprous ion by melatonin. Addition of DNA to this system inhibited ROS production, because DNA bound to copper and inhibited copper reduction by melatonin. When melatonin was added to a system containing high concentrations of copper and Que or EGCG, it diminished hydroxyl radical formation as expected. Upon addition of DNA to high concentrations of copper and Que, this pro-oxidative system generated ROS and caused DNA damage. The DNA damage was not prevented by typical scavengers of hydroxyl radical DMSO or mannitol. Under these conditions, melatonin or bathocuproine disulfonate (a copper chelator) protected the DNA from damage by chelating copper. When melatonin was administered intraperitoneally to mice, it inhibited hepatotoxicity and DNA damage evoked by EGCG plus diethyldithiocarbamate (a copper ionophore). Overall, the present study demonstrates the pro-oxidant and antioxidant activities of melatonin in the redox system of copper and polyphenols. The pro-oxidant effect is inhibited by the presence of DNA, which prevents copper reduction by melatonin. Interestingly, in-vivo melatonin protects against copper/polyphenol-induced DNA damage probably via acting as a copper-chelating agent rather than a hydroxyl radical scavenger. Melatonin with a dual function of scavenging hydroxyl radical and chelating copper is a more reliable DNA guardian than antioxidants that only have a single function of scavenging hydroxyl radical.
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Affiliation(s)
- Jiajia Wang
- Laboratory of Redox Biology, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science, Anhui Agricultural University, Hefei 230000, China
| | - Xiaoxiao Wang
- Laboratory of Redox Biology, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science, Anhui Agricultural University, Hefei 230000, China
| | - Yufeng He
- Laboratory of Redox Biology, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science, Anhui Agricultural University, Hefei 230000, China
| | - Lijie Jia
- Laboratory of Redox Biology, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science, Anhui Agricultural University, Hefei 230000, China
| | - Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei 230000, China
| | - Russel J Reiter
- Department of Cellular and Structural Biology, UT Health Science Center, San Antonio, TX 78229, USA.
| | - Jinsong Zhang
- Laboratory of Redox Biology, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science, Anhui Agricultural University, Hefei 230000, China.
- International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei 230000, China.
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Tan XL, Fan ZQ, Kuang JF, Lu WJ, Reiter RJ, Lakshmanan P, Su XG, Zhou J, Chen JY, Shan W. Melatonin delays leaf senescence of Chinese flowering cabbage by suppressing ABFs-mediated abscisic acid biosynthesis and chlorophyll degradation. J Pineal Res 2019; 67:e12570. [PMID: 30897243 DOI: 10.1111/jpi.12570] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 03/06/2019] [Accepted: 03/15/2019] [Indexed: 12/29/2022]
Abstract
Melatonin and abscisic acid (ABA) play contrasting roles in regulating leaf senescence in plants. The molecular mechanism underlying the interaction between melatonin and ABA involved in leaf senescence, however, remains poorly defined. Herein, we found that exogenous application of melatonin delayed the senescence of Chinese flowering cabbage, accompanied by reduced expression of chlorophyll catabolic and ABA biosynthetic genes, and a lower endogenous ABA level. Significantly, three nucleus-localized transcriptional activators BrABF1, BrABF4, and BrABI5 were identified, and their expressions were repressed by melatonin. In vitro and in vivo binding experiments revealed that BrABF1, BrABF4, and BrABI5 activated the transcription of a series of ABA biosynthetic and chlorophyll catabolic genes by physically binding to their promoters. Moreover, transient over-expression of BrABF1, BrABF4, and BrABI5 in tobacco leaves induced ABA accumulation and promoted chlorophyll degradation by upregulating tobacco ABA biosynthetic and chlorophyll catabolic genes, resulting in the accelerated leaf senescence. These effects were significantly attenuated by melatonin treatment. Our findings suggest that melatonin-mediated inhibition of leaf senescence involves suppression of ABFs-mediated ABA biosynthesis and chlorophyll degradation. Unraveling of the molecular regulatory mechanism of leaf senescence controlled by ABA and melatonin expands our understanding of the regulation of this phenomenon and offers potentially more effective molecular breeding strategies for extending the shelf-life of Chinese flowering cabbage.
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Affiliation(s)
- Xiao-Li Tan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Zhong-Qi Fan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Jian-Fei Kuang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Wang-Jin Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Russel J Reiter
- Department of Cellular and Structural Biology, UT Health Science Center, San Antonio, Texas
| | - Prakash Lakshmanan
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xin-Guo Su
- Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Jie Zhou
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Jian-Ye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Wei Shan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, China
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