Melatonin enhances cotton immunity to <i>Verticillium</i> wilt via manipulating lignin and gossypol biosynthesis

Li, Cheng; He, Qiuling; Zhang, Fan; Yu, Jingwen; Li, Cong; Zhao, Tianlun; Zhang, Yi; Xie, Qianwen; Su, Bangrong; Mei, Lei; Zhu, Shuijin; Chen, Jinhong

doi:10.1111/tpj.14477

Cited by 141 publications

(100 citation statements)

References 103 publications

(124 reference statements)

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“…Melatonin acts as a hormone in plants, and as a signaling molecule in a wide range of biological activities [5]. For example, melatonin treatment enhances plant tolerance against many stresses, including salt [6,7], drought [8,9], viruses [10], pathogens [11,12], waterlogging [13], and senescence [14], among others [15][16][17]. Melatonin is also involved in plant development processes such as growth [18,19], seed viability [20], flowering [21,22], endoplasmic reticulum (ER) quality control [23,24], secondary metabolite synthesis [25], and others [26].…”

Section: Introductionmentioning

confidence: 99%

Effects of Light Quality and Phytochrome Form on Melatonin Biosynthesis in Rice

2020

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Light is an important factor influencing melatonin synthesis in response to cadmium treatment in rice. However, the effects of light quality on, and the involvement of phytochrome light receptors in, melatonin production have not been explored. In this study, we used light-emitting diodes (LEDs) to investigate the effect of light wavelength on melatonin synthesis, and the role of phytochromes in light-dependent melatonin induction in rice. Upon cadmium treatment, peak melatonin production was observed under combined red and blue (R + B) light, followed by red (R) and blue light (B). However, both far-red (FR) LED light and dark treatment (D) failed to induce melatonin production. Similarly, rice seedlings grown under the R + B treatment showed the highest melatonin synthesis, followed by those grown under B and R. These findings were consistent with the results of our cadmium treatment experiment. To further confirm the effects of light quality on melatonin synthesis, we employed rice photoreceptor mutants lacking functional phytochrome genes. Melatonin induction was most inhibited in the phytochrome A mutant (phyA) followed by the phyB mutant under R + B treatment, whereas phyB produced the least amount of melatonin under R treatment. These results indicate that PhyB is an R light receptor. Expression analyses of genes involved in melatonin biosynthesis clearly demonstrated that tryptophan decarboxylase (TDC) played a key role in phytochrome-mediated melatonin induction when rice seedlings were challenged with cadmium.

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Section: Introductionmentioning

confidence: 99%

Effects of Light Quality and Phytochrome Form on Melatonin Biosynthesis in Rice

2020

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“…Application of exogenous melatonin to cotton could induce the expression of phenylpropanoid mevalonate (MVA), gossypol and other pathway-related genes, thus leading to increased lignin and gossypol concentrations in metabolites of this pathway and thus enhancing the resistance of cotton to Verticillium wilt [76]. Liu et al [77] found that spraying of 50 mol L −1 of melatonin solution on tomato fruits can induce and enhance the activity of disease-resistant proteases CHI, GLU, PAL and PPO, and significantly enhance disease resistance to Botrytis cinerea by regulating ROS accumulation and JA defense signaling pathways.…”

Section: The Regulation Of Melatonin Resistance To Biological Stressmentioning

confidence: 99%

Review of Melatonin in Horticultural Crops

Yan¹,

Shi²,

Gong³

2020

Melatonin - The Hormone of Darkness and Its Therapeutic Potential and Perspectives

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Melatonin is an indoleamine, abundant in animals and plants, which has the functions of regulating circadian rhythm, improving immunity and anti-aging in animals, and is a good health care product beneficial to human health. Recent studies have shown that melatonin has physiological functions including regulating plant growth, promoting seed germination, controlling root development and delaying leaf senescence. The antioxidant properties of melatonin give it the ability to strengthen plants' resistance to stress. The comprehensive researches in recent years, involving five aspects of "the biosynthetic pathway of melatonin in plants, the melatonin in horticultural crops and its influencing factors, the roles of melatonin in the growth and development of horticultural crops, in the response to stress of horticultural crops, the signal transduction network of melatonin in regulating plant growth and the development and stress resistance," are reviewed in the present paper. The application of melatonin in horticulture production is also discussed, which can provide a theoretical reference for the application of melatonin in horticultural production. DOI: http://dx.doi.org/10.5772/intechopen.90935 excess ROS to reduce the oxidation of cells. However, a recent study in rice (Oryza sativa L.) has shown that the key melatonin synthesis gene COMT is located in plant chloroplasts and has demonstrated that melatonin synthesis is increased through the 5-MT pathway [8]. CAND2/PMTR1, a hypothetic plant melatonin receptor, recently has been identified in Arabidopsis thaliana [9]. It is located in the plasma membrane with a receptor-like topology and interacts with the G-protein subunit (GPA1), while expression in different tissues is induced by melatonin. The binding of plant melatonin receptors triggers Gγb and Gα activation of NADPH oxidasedependent H 2 O 2 production (RBOH), increasing Ca 2+ inflow, promoting K + outflow, and ultimately leading to stomatal closure [10]. The cloning of these melatoninmetabolizing genes and the discovery of the receptors can lay a certain foundation for the study of melatonin-related functions in the future. Review of Melatonin in Horticultural Crops Concentrations of melatonin in horticultural crops and its influential factors

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“…Especially the repetitively identi ed cis- the inoculation of pathogens, changes in the expression patterns of phenylpropanoid related OMT genes were identi ed. These identi ed OMT genes included GhOMT49, GhOMT58, GhOMT20, and GhOMT61 that were found signi cantly expressed in 12 and 48 hours post inoculation Verticillium dahliae (Li et al 2019a). In the current study, these genes were down-regulated under abiotic stresses and in ber development stages (Fig.…”

Section: Omts Are Involved In Diverse Cis-regulatory Elementsmentioning

confidence: 99%

Biodiverse Responses of O-methyltransferase Genes to Salt Stress and Fiber Development of Gossypium Species

Hafeez

Gě

Zhāng

et al. 2020

Preprint

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O-methyltransferases (OMTs) are an important group of enzymes that catalyze the transfer of a methyl group from S-adenosyl-L-methionine to their acceptor substrates. OMTs are divided into several groups according to their structural features. In Gossypium species, they are involved in phenolics and flavonoid pathways. Phenolics defend the cellulose fiber from dreadful external conditions of biotic and abiotic stresses, promoting strength and growth of plant cell wall. In this study, an OMT gene family, containing a total of 192 members, has been identified and characterized in three main Gossypium species, G. hirsutum, G. arboreum and G. raimondii. Cis-regulatory elements analysis suggested important roles of OMT genes in growth, development, and defense against stresses. Transcriptome data of different fiber developmental stages in Chromosome Substitution Segment Lines (CSSLs), Recombination Inbred Lines (RILs) with excellent fiber quality, and standard genetic cotton cultivar TM-1 demonstrate that up-regulation of OMT genes at different fiber developmental stages, and abiotic stress treatments have some significant correlations with fiber quality formation, and with salt stress response. Quantitative RT-PCR results revealed that GhOMT43 and GhOMT27 genes had a specific expression in response to salt stress while GhOMT16, GhOMT55, and GhOMT33 in fiber elongation and secondary cell wall stages. Our results indicated that these genes might contribute to salt tolerance or fiber quality traits respectively in Gossypium.

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Melatonin enhances cotton immunity to Verticillium wilt via manipulating lignin and gossypol biosynthesis

Cited by 141 publications

References 103 publications

Effects of Light Quality and Phytochrome Form on Melatonin Biosynthesis in Rice

Effects of Light Quality and Phytochrome Form on Melatonin Biosynthesis in Rice

Review of Melatonin in Horticultural Crops

Biodiverse Responses of O-methyltransferase Genes to Salt Stress and Fiber Development of Gossypium Species

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