Melatonin confers drought stress tolerance in soybean (Glycine max L.)  by modulating photosynthesis, osmolytes, and reactive oxygen metabolism

Cao, Liang; Jin, Xijun; Zhang, Y.X.

doi:10.32615/ps.2019.100

Cited by 40 publications

(27 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plants, subjected to different environmental stresses, are continuously producing ROS such as H2O2 (Cao et al 2019). Generally, these ROS are unstable and highly reactive molecules, presenting a challenge to plant organs.…”

Section: Discussionmentioning

confidence: 99%

Low temperature and low irradiation induced irreversible damage of strawberry seedlings

Xu¹,

Wang²,

Yang³

et al. 2020

Photosynt.

View full text Add to dashboard Cite

Low temperature (LT) and low irradiation (LI) are common factors posing a great risk to plants. The study aimed to elucidate the effects of LT and LI and recovery on the photosynthetic apparatus, photoinhibition of PSII, and reactive oxygen metabolism of strawberry seedlings. The results showed that strawberry growth slowed down or even stopped and total chlorophyll content, stomatal conductance, net photosynthetic rate, and maximal quantum yield of PSII photochemistry decreased, while intercellular CO2 concentration increased under LI, LT, and combined stress (LL). Additionally, JIP-test showed that compared to LI or LT stress, LL-stressed plants had lower quantum yields and efficiencies and functional antenna size, and higher reaction center activity. Besides, the contents of hydrogen peroxide and malondialdehyde increased, while the activity of superoxide dismutase, peroxidase, and catalase were significantly inhibited compared with the control. After the stress was relieved, the photosynthesis of LL-stressed plants recovered poorly.

show abstract

Section: Discussionmentioning

confidence: 99%

Low temperature and low irradiation induced irreversible damage of strawberry seedlings

Xu¹,

Wang²,

Yang³

et al. 2020

Photosynt.

View full text Add to dashboard Cite

show abstract

“…Notably, the negative effects of drought stress were reversed by exogenous melatonin treatment in some plants, including apple [ 40 ], grape [ 41 ], cucumber [ 42 ], tomato [ 43 ], wheat [ 21 ] and maize [ 44 ]. In our previous study, it was demonstrated that exogenous melatonin treatment could improve the tolerance of drought-treated soybean [ 24 ]. However, the specific mechanisms by which melatonin alleviates drought stress is still unclear.…”

Section: Discussionmentioning

confidence: 99%

“…Previously, we reported that exogenous melatonin treatment could improve the tolerance of drought-treated soybean, which was possibly due to the enhanced content of osmolytes and higher antioxidant enzyme activities that reduced dehydration and lipid peroxidation [ 24 ]. However, there has been scarce reports on detailed mechanisms of melatonin for inducing drought resistance in soybean.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic and metabolomic profiling of melatonin treated soybean (Glycine max L.) under drought stress during grain filling period through regulation of secondary metabolite biosynthesis pathways

et al. 2020

View full text Add to dashboard Cite

There is a growing need to enhance the productivity of soybean ( Glycine max L.) under severe drought conditions in order to improve global food security status. Melatonin, a ubiquitous hormone, could alleviate drought stress in various plants. Earlier, we demonstrated that exogenous melatonin treatment could enhance the tolerance of drought-treated soybean. However, the underlying mechanisms by which this hormone exerts drought resistance is still unclear. The present study used transcriptomic and metabolomic techniques to determine some critical genes and pathways regulating melatonin response to drought conditions. Results showed that exogenous melatonin treatment could increase relative water content and decrease electrolyte leakage in the leaves and increase seed yield under drought stress. Transcriptomic analysis showed that there were 852 core differentially expressed genes (DEGs) that were regulated by drought stress and melatonin in soybean leaves. The most enriched drought-responsive genes are mainly involved in the ‘biosynthesis of secondary metabolites’. Metabolomic profiling under drought stress showed higher accumulation levels of secondary metabolites related to drought tolerance after exogenous melatonin treatment. Also, we highlighted the vital role of the pathways including phenylpropanoid, flavonoid, isoflavonoid, and steroid biosynthesis pathways for improvement of drought tolerance in soybean by exogenous melatonin treatment. In all, findings from this study give detailed molecular basis for the application of melatonin as a drought-resistant agent in soybean cultivation.

show abstract

“…Among plant growth substances, melatonin (N-acetyl-5-methoxytryptamine) is an amazing and powerful naturally occurring antioxidant that effectively cope with the drastic effects of water deficit in plants [18,23]. Thus, melatonin is strongly recommended to mitigate drought stress in several plant species including model plants [24,25], field crops [26,27], fruit crops [28,29], vegetable crops [30,31] as well as ornamental and medicinal plants [32,33] (Table 1). Melatonin treatment ranged from a very low concentration (50 nM) in grape [34] to high dosage (1 mM) in maize [35] (Table 1).…”

Section: An Overviewmentioning

confidence: 99%

“…(ii) By increasing drought severity, melatonin, which is biosynthesized in mitochondria and chloroplasts [76,77], exhibits more defence strategies. It promotes the physiological aspects including antioxidant system [28,59] to alleviate the oxidative damage, leading to less accumulation of H2O2, O −2 and NO [26,53], less electrolyte leakage [42], lower lipid peroxidation (MDA reduction) [28,65], lower relative conductivity [57], toxic substances content easing [60] cellular redox disruption limitation [53], better nitro-oxidative homeostasis [53], and enhanced ascorbate (AsA)-glutathione(GSH) cycle capacity (higher GSH and AsA contents) [55]. Such beneficial effects are carried out by regulating the enzymatic activities such as ascorbate peroxidase (APX), catalase (CAT), superoxide dismutase (SOD), as well as non-enzymatic antioxidants and osmoprotectants (proline and others) [45,64], and also secondary metabolites such as flavonoids, phenolics and phenylalanine ammonialyase [49].…”

Section: Anatomical Changes and Physiological Mechanismsmentioning

confidence: 99%

Melatonin-induced Water Stress Tolerance in Plants: Recent Advances

Moustafa-Farag

Mahmoud

Arnao

et al. 2020

Preprint

View full text Add to dashboard Cite

Water stress (drought and waterlogging) is drastic abiotic stress to plant growth and development. Melatonin, bioactive plant hormone, has been widely tested in drought situations in diverse plant species, while a few studies on the role of melatonin in waterlogging stress conditions have been published. In the current review, we analyze the bio-stimulatory functions of melatonin on plants under both drought and waterlogging stress. Melatonin controls the levels of reactive oxygen and nitrogen species and positively changes the molecular defense to improve plant tolerance against drought and waterlogging stress. Moreover, the crosstalk of melatonin and other phytohormones is a key element on plant survival under drought stress, while this relationship needs further investigation under waterlogging stress. In this review, we draw the complete story of water stress on both sides: drought and waterlogging through discussing the previous critical studies under both conditions. Moreover, we suggest several research directions, especially for waterlogging, which remains a big vague piece of melatonin and water stress puzzle.

show abstract

Melatonin confers drought stress tolerance in soybean (Glycine max L.) by modulating photosynthesis, osmolytes, and reactive oxygen metabolism

Cited by 40 publications

References 29 publications

Low temperature and low irradiation induced irreversible damage of strawberry seedlings

Low temperature and low irradiation induced irreversible damage of strawberry seedlings

Transcriptomic and metabolomic profiling of melatonin treated soybean (Glycine max L.) under drought stress during grain filling period through regulation of secondary metabolite biosynthesis pathways

Melatonin-induced Water Stress Tolerance in Plants: Recent Advances

Contact Info

Product

Resources

About