Melatonin increases the performance of Malus hupehensis after UV-B exposure

Wei, Zhiwei; Li, Chao; Gao, Tengteng; Zhang, Zhijun; Liang, Bowen; Lv, Zuosen; Zou, Yangjun; Ma, Fengwang

doi:10.1016/j.plaphy.2019.04.026

Cited by 56 publications

(32 citation statements)

References 63 publications

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“…Numerous studies has confirmed the positive role of melatonin in thermotolerance improvement in plants (Jahan et al, 2019;Shi et al, 2015;Wang et al, 2020;Wei et al, 2016), but only a few studies have demonstrated that the effect of melatonin was associated with the expression of HSPs. Shi et al (2015) found that exogenous MT treatment significantly upregulated the transcript levels of class It has been reported that MT can improve plant tolerance against drought in kiwifruit (Liang et al, 2019), oxidative stress caused by high temperature in tomato (Ahammed et al, 2019), and stress caused by UV-B exposure in apple (Wei et al, 2019). Our previous studies also confirmed that MT could improve the heat resistance in kiwifruit seedlings through promoting antioxidant enzymatic activity and glutathione S-transferase transcription (Liang et al, 2018).…”

Section: Transcription Factors Response To Heat Stresssupporting

confidence: 69%

Melatonin improves heat tolerance in Actinidia deliciosa via carotenoid biosynthesis and heat shock proteins expression

Xia

Zhou

Deng

et al. 2021

Physiologia Plantarum

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The whole-genome molecular mechanisms of melatonin (MT)-mediated enhancement of thermotolerance in plants has rarely been studied. In this study, the genome-wide gene expression profiles of kiwifruit seedlings primed with MT and non-MT at 45 C were analyzed by RNA-Seq. A total of 3299 differentially expressed genes (DEGs) were screened between MT and non-MT treatment, in which carotenoid biosynthesis was one of the high-enrichment pathways revealed by Kyoto Encyclopedia of Genes and Genomes analysis. Further, qRT-PCR verified that MT significantly induced the upregulated expression of the carotenoid biosynthesis gene, which was consistent with the increase of carotenoid content. In addition, 10 heat shock proteins (HSPs) were identified to have a highly upregulated expression by MT. These findings provide a set of informative and fundamental data on the role of MT in heat resistance.

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Section: Transcription Factors Response To Heat Stresssupporting

confidence: 69%

Melatonin improves heat tolerance in Actinidia deliciosa via carotenoid biosynthesis and heat shock proteins expression

Xia

Zhou

Deng

et al. 2021

Physiologia Plantarum

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“…The beneficial role of melatonin has been proved by increasing number of reports. The useful role of this magic molecule has been confirmed in many plant processes including germination of seeds and seedling growth (Aguilera et al 2015, germplasm storage (Zhao et al 2011, Uchendu et al 2013, development and growth of roots (Hernandez-Ruiz et al 2005, Park andBack 2012); and in responses to many stress conditions including high temperature stress (Jahan et al 2019), salt stress (Liu et al 2019, Li et al 2019c, drought stress (Wang et al 2013, Yang et al 2019b, cold stress (Bajwa et al 2014, heavy metals (Kaya et al 2019), pathogens (Wei et al 2017), and ultraviolet radiation (Afreen et al 2006, Wei et al 2019. Melatonin has multiple functions in plants, though, its possible role under abiotic stresses is still uncertain (Siddiqui et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Exogenous melatonin enhances salt stress tolerance in tomato seedlings

Altaf¹,

Shahid²,

Ren³

et al. 2020

Biol. plant.

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Melatonin (N-acetyl-5-methoxytryptamine) is an essential molecule which regulates plant growth and development and alleviates the damaging effects of abiotic stresses. To evaluate the important functions of melatonin in response to salinity stress, the effects of exogenous melatonin on the antioxidant system and growth of tomato (Solanum lycopersicum L.) under 150 mM NaCl stress were investigated. The application of 100 μM melatonin compensated the growth inhibition caused by salt-stress. Melatonin treated seedlings had an increased fresh and dry masses of shoots and roots. The application of 1-200 µM melatonin notably enhanced the relative chlorophyll content (SPAD index), root characteristics, and gas exchange in tomato seedlings subjected to salt stress compared to seedlings treated with salt stress alone. Moreover, melatonin pretreatment minimized accumulation of reactive oxygen species and improved activities of antioxidative enzymes including catalase, superoxide dismutase, glutathione reductase, and ascorbate peroxidase.

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“…Kozai's group reported in 2006 that melatonin level in Glycyrrhiza uralensis (Fabaceae) increased under both high‐ and low‐intensity UV‐B radiation (Afreen, Zobayed, & Kozai, 2006). Later studies in 2012 and 2019 showed that melatonin ameliorated DNA damage and ROS reduction caused by UV‐B stress in Nicotiana sylvestris and Malus hupehensis (Arnao & Hernández‐Ruiz, 2014; Fischer, Kleszczyński, Hardkop, Kruse, & Zillikens, 2013; Hernández‐Ruiz & Arnao, 2008; Nazir et al, 2020; Ullah et al, 2019; Wei et al, 2019; Zhang et al, 2012). The molecular mechanism whereby melatonin affects the UV‐B pathway was not addressed in these studies.…”

Section: Introductionmentioning

confidence: 99%

Role of melatonin in UV‐B signaling pathway and UV‐B stress resistance in Arabidopsis thaliana

Yao

et al. 2020

Plant Cell & Environment

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Melatonin (N-acetyl-5-methoxytryptamine) plays important roles in plant defences against a variety of biotic and abiotic stresses, including UV-B stress. Molecular mechanisms underlying functions of melatonin in plant UV-B responses are poorly understood. Here, we show that melatonin effect on molecular signalling pathways, physiological changes and UV-B stress resistance in Arabidopsis. Both exogenous and endogenous melatonin affected expression of UV-B signal transduction pathway genes. Experiments using UV-B signalling component mutants cop1-4 and hy5-215 revealed that melatonin not only acts as an antioxidant to promote UV-B stress resistance, but also regulates expression of several key components of UV-B signalling pathway, including ubiquitin-degrading enzyme (COP1), transcription factors (HY5, HYH) and RUP1/2. Our findings indicate that melatonin delays and subsequently enhances expression of COP1, HY5, HYH and RUP1/2, which act as central effectors in UV-B signalling pathway, thus regulating their effects on antioxidant systems to protect the plant from UV-B stress.

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Melatonin increases the performance of Malus hupehensis after UV-B exposure

Cited by 56 publications

References 63 publications

Melatonin improves heat tolerance in Actinidia deliciosa via carotenoid biosynthesis and heat shock proteins expression

Melatonin improves heat tolerance in Actinidia deliciosa via carotenoid biosynthesis and heat shock proteins expression

Exogenous melatonin enhances salt stress tolerance in tomato seedlings

Role of melatonin in UV‐B signaling pathway and UV‐B stress resistance in Arabidopsis thaliana

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