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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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Lv Z, Yu L, Zhan H, Li J, Wang C, Huang L, Wang S. Shoot differentiation from Dendrocalamus brandisii callus and the related physiological roles of sugar and hormones during shoot differentiation. TREE PHYSIOLOGY 2023:tpad039. [PMID: 36988419 DOI: 10.1093/treephys/tpad039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/20/2023] [Indexed: 06/19/2023]
Abstract
Only a few calli regeneration systems of bamboos were successfully established, which limited the research on physiological mechanism of callus differentiation. In this study, we successfully established the callus differentiation systems of Dendrocalamus brandisii via seeds. The results showed that the best medium for callus induction of D. brandisii seeds was basal MS media amended with 5.0 mg L-1 2,4-D and 0.5 mg L-1 KT, and the optimal medium for shoot differentiation was the basal MS media supplemented with 4.0 mg L-1 BA and 0.5 mg L-1 NAA. Callus tissues had apparent polarity in cell arrangement, and developed their own meristematic cell layers. α-amylase, STP and SUSY played a dominant role in carbohydrates degradation in callus during shoot differentiation. PPP and TCA pathways up-regulated in the shoot-differentiated calli. The dynamics of BA and KT contents in calli was consistent with their concentrations applied in medium. IAA synthesis and the related signal transduction were down-regulated, while the endogenous CTKs contents were up-regulated by the exogenous CTKs application in shoot-differentiated calli, and their related synthesis, transport and signal transduction pathways were also up-regulated. The downregulated signal transduction pathways of IAA and ABA revealed that they did not play the key role in shoot differentiation of bamboos. GAs also played a role in shoot differentiation based on the down-regulation of DELLA and the up-regulation of PIF4 genes. The overexpression of DbSNRK2 and DbFIF4 genes further confirmed the negative role of ABA and the positive role of GAs in shoot differentiation.
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Affiliation(s)
- Zhuo Lv
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Bamboo Research Institute, Nanjing Forestry University, Nanjing, China
| | - Lixia Yu
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Hui Zhan
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Juan Li
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Changming Wang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Ling Huang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
| | - Shuguang Wang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
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Chen L, Xu M, Liu C, Hao J, Fan S, Han Y. LsMYB15 Regulates Bolting in Leaf Lettuce ( Lactuca sativa L.) Under High-Temperature Stress. FRONTIERS IN PLANT SCIENCE 2022; 13:921021. [PMID: 35837450 PMCID: PMC9275828 DOI: 10.3389/fpls.2022.921021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
High temperature is one of the primary environmental stress factors affecting the bolting of leaf lettuce. To determine the potential role of melatonin in regulating high-temperature induced bolting in leaf lettuce (Lactuca sativa L.), we conducted melatonin treatment of the bolting-sensitive cultivar "S39." The results showed that 100 μmol L-1 melatonin treatment significantly promoted growth, and melatonin treatment delayed high-temperature-induced bolting in lettuce. RNA-seq analysis revealed that the differentially expressed genes (DEGs) involved in "plant hormone signal transduction" and "phenylpropanoid biosynthesis" were significantly enriched during high-temperature and melatonin treatment. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis suggested that the expression patterns of abscisic acid (ABA)-related genes positively correlated with stem length during leaf lettuce development. Furthermore, weighted gene co-expression network analysis (WGCNA) demonstrated that MYB15 may play an important role in melatonin-induced resistance to high temperatures. Silencing the LsMYB15 gene in leaf lettuce resulted in early bolting, and exogenous melatonin delayed early bolting in leaf lettuce at high temperatures. Our study provides valuable data for future studies of leaf lettuce quality.
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Vafadar F, Amooaghaie R, Ehsanzadeh P, Ghanati F. Melatonin improves the photosynthesis in Dracocephalum kotschyi under salinity stress in a Ca 2+/CaM-dependent manner. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 49:89-101. [PMID: 34794543 DOI: 10.1071/fp21233] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
This study investigated: (1) the effects of various concentrations of melatonin (MT) and Ca2+; and (2) the impact of crosstalk between these signal molecules on photosynthesis and salt tolerance of Dracocephalum kotschyi Boiss. Results indicated that 5mM CaCl2, as well as 100μM MT were the best concentrations for increasing shoot dry weight, leaf area, SPAD index, maximum quantum efficiency of photosystem II (Fv/Fm), and decreasing malondialdehyde content under salinity stress. The impact of MT on growth and photosynthesis was closely linked to its effect on enhancing antioxidant enzyme activities in leaves. Application of p-chlorophenylalanine, as an inhibitor of MT biosynthesis, negated the impacts of MT on the aforementioned attributes. Salinity and MT boosted cytosolic Ca2+ concentration. Exogenous MT, as well as Ca2+, enhanced tolerance index, membrane stability, leaf area, the content of chlorophyll (Chl) a, Chl b, and carotenoids (Car), Fv/Fm, and stomatal conductance under salinity stress. These impacts of MT were eliminated by applying a calmodulin antagonist, a Ca2+ chelator and a Ca2+ channel blocker. These novel findings indicate that the MT-induced effects on photosynthetic parameters and salt-evoked oxidative stress were mediated through calcium/calmodulin (Ca2+/CaM) signalling.
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Affiliation(s)
- Farinaz Vafadar
- Plant Biology Department, Faculty of Science, Shahrekord University, Shahrekord, Iran
| | - Rayhaneh Amooaghaie
- Plant Biology Department, Faculty of Science, Shahrekord University, Shahrekord, Iran; and Biotechnology Research Institute, Shahrekord University, Shahrekord, Iran
| | - Parviz Ehsanzadeh
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Faezeh Ghanati
- Department of Plant Biology, Faculty of Biological Science, Tarbiat Modares University (TMU), POB 14115-154, Tehran, Iran
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Kołodziejczyk I, Kaźmierczak A, Posmyk MM. Melatonin Application Modifies Antioxidant Defense and Induces Endoreplication in Maize Seeds Exposed to Chilling Stress. Int J Mol Sci 2021; 22:ijms22168628. [PMID: 34445334 PMCID: PMC8395332 DOI: 10.3390/ijms22168628] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/30/2021] [Accepted: 08/01/2021] [Indexed: 11/23/2022] Open
Abstract
The aim of the study was to demonstrate the biostimulating effect of exogenous melatonin (MEL) applied to seeds via hydroconditioning. It was indicated that only well-chosen application technique and MEL dose guarantees success concerning seed germination and young seedlings growth under stress conditions. For maize seed, 50 μM of MEL appeared to be the optimal dose. It improved seed germination and embryonic axes growth especially during chilling stress (5 °C/14 days) and during regeneration after its subsided. Unfortunately, MEL overdosing lowered IAA level in dry seeds and could disrupt the ROS-dependent signal transduction pathways. Very effective antioxidant MEL action was confirmed by low level of protein oxidative damage and smaller quantity of lipid oxidation products in embryonic axes isolated from seeds pre-treated with MEL and then exposed to cold. The stimulatory effects of MEL on antioxidant enzymes: SOD, APX and GSH-PX and on GST-a detoxifying enzyme, was also demonstrated. It was indicated for the first time, that MEL induced defence strategies against stress at the cytological level, as appearing endoreplication in embryonic axes cells even in the seeds germinating under optimal conditions (preventive action), but very intensively in those germinating under chilling stress conditions (intervention action), and after stress removal, to improve regeneration.
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Affiliation(s)
- Izabela Kołodziejczyk
- Department of Plant Ecophisiology, Faculty of Biology and Environmental Protection, University of Lodz, 90237 Lodz, Poland;
- Correspondence: ; Tel.: +48-42-635-44-22
| | - Andrzej Kaźmierczak
- Department of Cytophysiology, Faculty of Biology and Environmental Protection, University of Lodz, 90237 Lodz, Poland;
| | - Małgorzata M. Posmyk
- Department of Plant Ecophisiology, Faculty of Biology and Environmental Protection, University of Lodz, 90237 Lodz, Poland;
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Liao L, Zhou Y, Xu Y, Zhang Y, Liu X, Liu B, Chen X, Guo Y, Zeng Z, Zhao Y. Structural and Molecular Dynamics Analysis of Plant Serotonin N-Acetyltransferase Reveal an Acid/Base-Assisted Catalysis in Melatonin Biosynthesis. Angew Chem Int Ed Engl 2021; 60:12020-12026. [PMID: 33682300 DOI: 10.1002/anie.202100992] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/22/2021] [Indexed: 01/12/2023]
Abstract
Serotonin N-acetyltransferase (SNAT) is the key rate-limiting enzyme in melatonin biosynthesis. It mediates melatonin biosynthesis in plants by using serotonin and 5-methoxytryptamine (5-MT), but little is known of its underlying mechanisms. Herein, we present a detailed reaction mechanism of a SNAT from Oryza sativa through combined structural and molecular dynamics (MD) analysis. We report the crystal structures of plant SNAT in the apo and binary/ternary complex forms with acetyl-CoA (AcCoA), serotonin, and 5-MT. OsSNAT exhibits a unique enzymatically active dimeric fold not found in the known structures of arylalkylamine N-acetyltransferase (AANAT) family. The key residues W188, D189, D226, N220, and Y233 located around the active pocket are important in catalysis, confirmed by site-directed mutagenesis. Combined with MD simulations, we hypothesize a novel plausible catalytic mechanism in which D226 and Y233 function as catalytic base and acid during the acetyl-transfer reaction.
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Affiliation(s)
- Lijing Liao
- School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Yuanze Zhou
- Shandong Provincial Key Laboratory of Microbial Engineering, College of Bioengineering, Qilu University of Technology, Jinan, 250353, Shandong, China.,National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Youdong Xu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, Sichuan, China
| | - Yuhao Zhang
- Department of Resources Science of Traditional Chinese Medicines and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
| | - Xikai Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Biao Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Xinxin Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yan Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Zhixiong Zeng
- Shandong Provincial Key Laboratory of Microbial Engineering, College of Bioengineering, Qilu University of Technology, Jinan, 250353, Shandong, China
| | - Yucheng Zhao
- Department of Resources Science of Traditional Chinese Medicines and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China
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Liao L, Zhou Y, Xu Y, Zhang Y, Liu X, Liu B, Chen X, Guo Y, Zeng Z, Zhao Y. Structural and Molecular Dynamics Analysis of Plant Serotonin
N
‐Acetyltransferase Reveal an Acid/Base‐Assisted Catalysis in Melatonin Biosynthesis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lijing Liao
- School of Pharmacy China Pharmaceutical University Nanjing 210009 Jiangsu China
| | - Yuanze Zhou
- Shandong Provincial Key Laboratory of Microbial Engineering College of Bioengineering Qilu University of Technology Jinan 250353 Shandong China
- National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 Hubei China
| | - Youdong Xu
- College of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 Sichuan China
| | - Yuhao Zhang
- Department of Resources Science of Traditional Chinese Medicines and State Key Laboratory of Natural Medicines School of Traditional Chinese Pharmacy China Pharmaceutical University Nanjing 210009 Jiangsu China
| | - Xikai Liu
- National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 Hubei China
| | - Biao Liu
- National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 Hubei China
| | - Xinxin Chen
- National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 Hubei China
| | - Yan Guo
- National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 Hubei China
| | - Zhixiong Zeng
- Shandong Provincial Key Laboratory of Microbial Engineering College of Bioengineering Qilu University of Technology Jinan 250353 Shandong China
| | - Yucheng Zhao
- Department of Resources Science of Traditional Chinese Medicines and State Key Laboratory of Natural Medicines School of Traditional Chinese Pharmacy China Pharmaceutical University Nanjing 210009 Jiangsu China
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Li D, Batchelor WD, Zhang D, Miao H, Li H, Song S, Li R. Analysis of melatonin regulation of germination and antioxidant metabolism in different wheat cultivars under polyethylene glycol stress. PLoS One 2020; 15:e0237536. [PMID: 32790719 PMCID: PMC7425870 DOI: 10.1371/journal.pone.0237536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 07/28/2020] [Indexed: 12/15/2022] Open
Abstract
Melatonin is effective in enhancing various abiotic stress resistances of plants. However, its underlying mechanisms in drought-resistance in winter wheat (Triticum aestivum L.) is not clear. The goal of this work was to investigate the effect of melatonin on seed germination and to evaluate leaf antioxidant physiology for two wheat varieties. Experiments included 20% PEG, melatonin plus 20% PEG and a control using two contrasting wheat varieties (JM22– drought sensitive and HG35– drought resistant). Melatonin levels were 0, 1, 10, 100 and 300 μmol L-1. Results revealed that 300 μmol L-1 of melatonin alleviated the negative effect of water stress on germination and increased radicle length, radicle number, and plumule length of the germinated seeds. Principal component analysis showed a significant change in amino acid content during germination and this change was dependent on melatonin concentration and the variety. Lysine (Lys) content in wheat seeds under the PEG plus 300 μmol L-1 melatonin treatment increased compared with that of the seeds under PEG alone. There was a significant and positive correlation between Lys content and morphological index of germination. During seedling growth, soluble protein was involved in osmotic adjustment and superoxide dismutase (SOD) activity was increased to mitigate the damage in the cytomembrane of JM 22 leaf under 300 μmol L-1 melatonin plus PEG treatment. The effect of melatonin was dependent on SOD activity increasing significantly for HG35—a drought resistant variety. The results of this work lays a foundation for further studies to determine if melatonin can be economically used to mitigate the impact of dry planting conditions on wheat productivity in North China Plain.
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Affiliation(s)
- Dongxiao Li
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - William D. Batchelor
- Biosystems Engineering Department, Auburn University, Auburn, Alabama, United States of America
| | - Di Zhang
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - Hanxiao Miao
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - Hongye Li
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
| | - Shijia Song
- Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Ruiqi Li
- College of Agronomy, State Key Laboratory of North China Crop Improvement and Regulation, Key Laboratory of Crop Growth Regulation of Hebei Province, Hebei Agricultural University, Baoding, Hebei Province, China
- * E-mail:
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Ahmad S, Su W, Kamran M, Ahmad I, Meng X, Wu X, Javed T, Han Q. Foliar application of melatonin delay leaf senescence in maize by improving the antioxidant defense system and enhancing photosynthetic capacity under semi-arid regions. PROTOPLASMA 2020; 257:1079-1092. [PMID: 32146513 DOI: 10.1007/s00709-020-01491-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/14/2020] [Indexed: 05/23/2023]
Abstract
Melatonin is an important plant growth regulator which plays a key role in plant growth and development. The objective of the current research was to evaluate the effect of foliar application of melatonin (MF) on photosynthetic efficiency, antioxidant defense mechanism, and its relation with leaf senescence in maize crop grown in a semi-arid region. A field experiment was conducted during 2017 and 2018 growth season, where melatonin was applied to the foliage at concentrations of 0 (MF0), 25 (MF1), 50 (MF2), and 75 (MF3) μM at the ninth leaf stage. Foliar application of melatonin significantly improved chlorophyll content, net photosynthetic rate, soluble sugar content, and soluble protein content during the process of leaf senescence. The application of melatonin also enhanced antioxidant enzyme activities including superoxide dismutase, catalase, and peroxidase, while reduced malondialdehyde and reactive oxygen species accumulation. Melatonin foliar application also increased total leaf area per plant, grains per ear, thousand grain weight and grain yield of maize crop in a semi-arid region. The application of melatonin significantly improved photosynthetic activity, antioxidant defense mechanism, and yield of maize crop in a semi-arid region, where the most effective treatment was MF2.
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Affiliation(s)
- Shakeel Ahmad
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China.
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Wennan Su
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Muhammad Kamran
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Irshad Ahmad
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiangping Meng
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiaorong Wu
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Tehseen Javed
- College of Water Resources and Architectural Engineering, Northwest Agriculture & Forestry University, Yangling, China
| | - Qingfang Han
- Key Laboratory of Crop Physio-ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture/College of Agronomy, Northwest A & F University, Yangling, 712100, Shaanxi, China.
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Pereira N, Naufel MF, Ribeiro EB, Tufik S, Hachul H. Influence of Dietary Sources of Melatonin on Sleep Quality: A Review. J Food Sci 2019; 85:5-13. [DOI: 10.1111/1750-3841.14952] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/17/2019] [Accepted: 10/20/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Nádia Pereira
- Dept. of PsychobiologyFederal Univ. of São Paulo São Paulo Brazil
| | | | | | - Sergio Tufik
- Dept. of PsychobiologyFederal Univ. of São Paulo São Paulo Brazil
| | - Helena Hachul
- Dept. of PsychobiologyFederal Univ. of São Paulo São Paulo Brazil
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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: 46] [Impact Index Per Article: 9.2] [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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Tsukaya H. Has the impact of endoreduplication on cell size been overestimated? THE NEW PHYTOLOGIST 2019; 223:11-15. [PMID: 30854661 DOI: 10.1111/nph.15781] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Affiliation(s)
- Hirokazu Tsukaya
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
- ExCELLS, National Institutes of Natural Sciences, Okazaki, 444-8787, Japan
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Li ZG, Xu Y, Bai LK, Zhang SY, Wang Y. Melatonin enhances thermotolerance of maize seedlings (Zea mays L.) by modulating antioxidant defense, methylglyoxal detoxification, and osmoregulation systems. PROTOPLASMA 2019; 256:471-490. [PMID: 30244382 DOI: 10.1007/s00709-018-1311-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 09/18/2018] [Indexed: 05/21/2023]
Abstract
Melatonin (MT), derived from tryptophan, is an amazing signaling molecule with multiple functions in plants. Heat stress (HS) induced by high temperature is a major stress factor that limits metabolism, growth, development, and productivity of plants. However, whether MT could enhance the thermotolerance of maize seedlings and the underlying mechanisms is not completely known. In this study, treatment of maize seedlings with MT enhanced the survival percentage of maize seedlings under HS conditions, mitigated an increase in malondialdehyde (MDA, product of membrane lipid peroxidation) and electrolyte leakage, and improved tissue vitality compared with the control without MT treatment, indicating that MT treatment could enhance the theromotolerance of maize seedlings. To understand the mechanisms underlying MT-enhanced thermotolerance of maize seedlings, the antioxidant defense (guaiacol peroxidease: GPX; glutathione reductase: GR; catalase: CAT; ascorbic acid: AsA; and glutathione: GSH), methylglyoxal (MG) detoxification (glyoxalase I: Gly I; and glyoxalase II: Gly II), and osmoregulation (proline: Pro; trehalose: Tre; and total soluble sugar: TSS) systems were assayed. The results showed that MT treatment stimulated the activities of antioxidant enzymes (GPX, GR, and CAT) and MG detoxification enzymes (Gly I and Gly II), increased the contents of nonenzyme antioxidants (AsA and GSH) and osmolytes (Pro, Tre, and TSS) in maize seedlings under normal culture conditions, and maintained a higher abovementioned enzyme activity and antioxidant and osmolyte contents under HS conditions compared with the control. This work reported that MT could enhance the thermotolerance of maize seedlings by modulating the antioxidant defense, MG detoxification, and osmoregulation systems.
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Affiliation(s)
- Zhong-Guang Li
- School of Life Sciences, Yunnan Normal University, Kunming, 650092, People's Republic of China.
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming, 650092, People's Republic of China.
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, 650092, Yunnan Province, People's Republic of China.
| | - Ying Xu
- School of Life Sciences, Yunnan Normal University, Kunming, 650092, People's Republic of China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming, 650092, People's Republic of China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, 650092, Yunnan Province, People's Republic of China
| | - Li-Kang Bai
- School of Life Sciences, Yunnan Normal University, Kunming, 650092, People's Republic of China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming, 650092, People's Republic of China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, 650092, Yunnan Province, People's Republic of China
| | - Shu-Yan Zhang
- School of Life Sciences, Yunnan Normal University, Kunming, 650092, People's Republic of China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming, 650092, People's Republic of China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, 650092, Yunnan Province, People's Republic of China
| | - Yue Wang
- School of Life Sciences, Yunnan Normal University, Kunming, 650092, People's Republic of China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming, 650092, People's Republic of China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, 650092, Yunnan Province, People's Republic of China
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Xie C, Xiong X, Huang Z, Sun L, Ma J, Cai S, Yu F, Zhong W, Chen S, Li X. Exogenous melatonin improves lead tolerance of bermudagrass through modulation of the antioxidant defense system. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 20:1408-1417. [PMID: 30706747 DOI: 10.1080/15226514.2018.1488813] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/22/2018] [Accepted: 06/05/2018] [Indexed: 06/09/2023]
Abstract
Lead (Pb) is a major anthropogenic contaminant that can be devastating on both animals and plants. It is essential to develop methods to decrease the Pb contaminant in soil by phytoremediation using plants that are tolerance to Pb. In this study, we investigated the tolerance of bermudagrass (Cynodon dactylon (L.) Pers.) and the role of exogenous application of melatonin for improving its tolerance to Pb. Bermudagrass growing in soil treated with Pb at 1,000 or 2,000 mg kg-1 were assessed with or without melatonin pretreatment at various concentrations. Under Pb stresses, bermudagrass plants showed stunted growth and increased cellular oxidative stress. Pre-treating bermudagrass plants with melatonin at 20 or 100 μM significantly increased the activities of antioxidant enzymes (superoxide dismutase, catalase, peroxidase, ascorbate peroxidase, and glutathione reductase) and the contents of non-enzymatic antioxidants (ascorbic acid and glutathione), and decreased reactive oxygen species (hydrogen peroxide, superoxide), and ultimately reduced membrane lipid peroxidation and permeability. These changes contributed to improvements in the water status, photosynthetic pigment synthesis, and biomass production of bermudagrass under Pb stresses. Our study provides the first evidence that melatonin may be a promising tool for enhancing Pb tolerance and phytoremediation potential of bermudagrass.
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Affiliation(s)
- Chengcheng Xie
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Xi Xiong
- b Division of Plant Sciences , University of Missouri , Columbia , MO , USA
| | - Zhuo Huang
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Lingxia Sun
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Jun Ma
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Shizhen Cai
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Fei Yu
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Woxiu Zhong
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Shuyu Chen
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
| | - Xi Li
- a College of Landscape Architecture , Sichuan Agricultural University , Wenjiang , Sichuan , P. R. China
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15
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Xiong F, Zhuo F, Reiter RJ, Wang L, Wei Z, Deng K, Song Y, Qanmber G, Feng L, Yang Z, Li F, Ren M. Hypocotyl Elongation Inhibition of Melatonin Is Involved in Repressing Brassinosteroid Biosynthesis in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:1082. [PMID: 31616446 PMCID: PMC6775476 DOI: 10.3389/fpls.2019.01082] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/08/2019] [Indexed: 05/03/2023]
Abstract
Melatonin functions as a plant hormone/regulator in the regulation of growth and development. However, the underlying mechanisms are still unclear. In this study, we found that a high dose of melatonin inhibited hypocotyl elongation in a dose-dependent manner in Arabidopsis. An expression profile analysis showed that hypocotyl growth inhibition by melatonin was involved in reprograming the expression of cell elongation genes and brassinosteroid (BRs) biosynthetic genes. Furthermore, similar to BR biosynthetic inhibitor brassinazole (BRZ), a high concentration of melatonin upregulated BR-biosynthetic genes and downregulated BR-induced genes involved in cell elongation, while melatonin was inefficient in brassinazole-resistant mutants like the bzr1-1D and bes1-D in hypocotyl inhibition. The comparative expression profile analysis showed an opposite expression mode in the co-regulated genes between melatonin and BZR1 or melatonin and brassinolide (BL). Additionally, exogenous BL rescued the repressive phenotype of BR biosynthesis-deficient mutant like det2-1 even in the presence of high-dose melatonin, but not BR receptor mutant bri1-5 or signal transduction mutant bin2-1. A biochemical analysis further confirmed that melatonin reduced endogenous BR levels in a dose-dependent manner in Arabidopsis. Taken together, these results indicate that melatonin inhibits BR biosynthesis but does not block BR signaling in the inhibition of hypocotyl elongation and extends insights on the role of melatonin in cross-talking with plant hormone signaling.
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Affiliation(s)
- Fangjie Xiong
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Fengping Zhuo
- School of Life Sciences, Chongqing University, Chongqing, China
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing, China
| | - Russel J. Reiter
- Department of Cellular and Structural Biology, UT Health San Antonio, San Antonio, TX, United States
| | - Lingling Wang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Zhenzhen Wei
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Kexuan Deng
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Yun Song
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Ghulam Qanmber
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Li Feng
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Zuoren Yang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Fuguang Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- *Correspondence: Fuguang Li, ; Maozhi Ren,
| | - Maozhi Ren
- School of Life Sciences, Chongqing University, Chongqing, China
- *Correspondence: Fuguang Li, ; Maozhi Ren,
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16
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Chen Z, Gu Q, Yu X, Huang L, Xu S, Wang R, Shen W, Shen W. Hydrogen peroxide acts downstream of melatonin to induce lateral root formation. ANNALS OF BOTANY 2018; 121:1127-1136. [PMID: 29325001 PMCID: PMC5946926 DOI: 10.1093/aob/mcx207] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 12/14/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND AND AIMS Although several studies have confirmed the beneficial roles of exogenous melatonin in lateral root (LR) formation, the molecular mechanism is still elusive. Here, the role of hydrogen peroxide (H2O2) in the induction of LR formation triggered by melatonin was investigated. METHODS Alfalfa (Medicago sativa 'Biaogan') and transgenic Arabidopsis seedlings were treated with or without melatonin, diphenyleneiodonium (DPI, NADPH oxidase inhibitor), N,N'-dimethylthiourea (DMTU, H2O2 scavenger), alone or combined. Then, H2O2 content was determined with 2',7'-dichlorofluorescein diacetate (H2DCFDA)-dependent fluorescence and spectrophotography. Transcript levels of cell cycle regulatory genes were analysed by real-time reverse transcription-PCR. KEY RESULTS Application of exogenous melatonin not only increased endogenous H2O2 content but also induced LR formation in alfalfa seedlings. Consistently, melatonin-induced LR primordia exhibited an accelerated response. These inducible responses were significantly blocked when DPI or DMTU was applied. Compared with the wild-type, transgenic Arabidopsis plants overexpressing alfalfa MsSNAT (a melatonin synthesis gene) increased H2O2 accumulation and thereafter LR formation, both of which were blocked by DPI or DMTU. Similarly, melatonin-modulated expression of marker genes responsible for LR formation, including MsCDKB1;1, MsCDKB2;1, AtCDKB1;1 and AtCDKB2;1, was obviously impaired by the removal of H2O2 in both alfalfa and transgenic Arabidopsis plants. CONCLUSIONS Pharmacological and genetic evidence revealed that endogenous melatonin-triggered LR formation was H2O2-dependent.
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Affiliation(s)
- Ziping Chen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, P.R. China
| | - Quan Gu
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, P.R. China
| | - Xiuli Yu
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, P.R. China
| | - Liqin Huang
- College of Sciences, Nanjing Agricultural University, Nanjing, P.R. China
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Science, Nanjing, P.R. China
| | - Ren Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Science, Nanjing, P.R. China
| | - Wei Shen
- College of Sciences, Nanjing Agricultural University, Nanjing, P.R. China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, P.R. China
- For correspondence. E-mail:
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17
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Erland LAE, Shukla MR, Singh AS, Murch SJ, Saxena PK. Melatonin and serotonin: Mediators in the symphony of plant morphogenesis. J Pineal Res 2018; 64. [PMID: 29149453 DOI: 10.1111/jpi.12452] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 10/16/2017] [Indexed: 12/30/2022]
Abstract
Melatonin and serotonin are important signaling and stress mitigating molecules that play important roles across growth and development in plants. Despite many well-documented responses, a systematic investigation of the entire metabolic pathway (tryptophan, tryptamine, and N-acetylserotonin) does not exist, leaving many open questions. The objective of this study was to determine the responses of Hypericum perforatum (L.) to melatonin, serotonin, and their metabolic precursors. Two well-characterized germplasm lines (#4 and 112) created by mutation and a haploid breeding program were compared to wild type to identify specific responses. Germplasm line 4 has lower regenerative and photosynthetic capacity than either wild type or line 112, and there are documented significant differences in the chemistry and physiology of lines 4 and 112. Supplementation of the culture media with tryptophan, tryptamine, N-acetylserotonin, serotonin, or melatonin partially reversed the regenerative recalcitrance and growth impairment of the germplasm lines. Quantification of phytohormones revealed crosstalk between the indoleamines and related phytohormones including cytokinin, salicylic acid, and abscisic acid. We hypothesize that melatonin and serotonin function in coordination with their metabolites in a cascade of phytochemical responses including multiple pathways and phytohormone networks to direct morphogenesis and protect photosynthesis in H. perforatum.
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Affiliation(s)
- Lauren A E Erland
- Department of Plant Agriculture, Gosling Research Institute for Plant Preservation, University of Guelph, Guelph, ON, Canada
| | - Mukund R Shukla
- Department of Plant Agriculture, Gosling Research Institute for Plant Preservation, University of Guelph, Guelph, ON, Canada
| | - Amritpal S Singh
- Summerland Research and Development Centre, Agriculture and Agri-Food Canada, Summerland, BC, Canada
| | - Susan J Murch
- Department of Chemistry, University of British Columbia, Kelowna, BC, Canada
| | - Praveen K Saxena
- Department of Plant Agriculture, Gosling Research Institute for Plant Preservation, University of Guelph, Guelph, ON, Canada
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