Exogenous melatonin improves Malus resistance to Marssonina apple blotch

Journal of Pineal Research, Journal Year: 2012, Volume and Issue: 54(4), P. 426 - 434

Published: Dec. 27, 2012

We examined whether exogenously applied melatonin could improve resistance to Marssonina apple blotch (Diplocarpon mali) by [Malus prunifolia (Willd.) Borkh. cv. Donghongguo]. This serious disease leads premature defoliation in the main regions of production. When plants were pretreated with melatonin, was increased leaves. investigated potential roles for modulating levels hydrogen peroxide (H2O2), as well activities antioxidant enzymes and pathogenesis-related proteins during these plant-pathogen interactions. Pretreatment enabled maintain intracellular H2O2 concentrations at steady-state enhance plant defence-related enzymes, possibly improving resistance. Because is safe beneficial animals humans, exogenous pretreatment might represent a promising cultivation strategy protect against this pathogen infection.

Language: Английский

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Exogenous melatonin promotes biomass accumulation and photosynthesis of kiwifruit seedlings under drought stress

Scientia Horticulturae, Journal Year: 2018, Volume and Issue: 246, P. 34 - 43

Published: Oct. 30, 2018

Language: Английский

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Melatonin systemically ameliorates drought stress‐induced damage in Medicago sativa plants by modulating nitro‐oxidative homeostasis and proline metabolism

Journal of Pineal Research, Journal Year: 2017, Volume and Issue: 62(4)

Published: Feb. 22, 2017

Recent reports have uncovered the multifunctional role of melatonin in plant physiological responses under optimal and suboptimal environmental conditions. In this study, we explored whether pretreatment could provoke priming effects alfalfa (Medicago sativa L.) plants subsequently exposed to prolonged drought stress (7 days), by withholding watering. Results revealed that rhizospheric application (10 μmol L-1 ) remarkably enhanced tolerance plants, as evidenced observed tolerant phenotype, well higher levels chlorophyll fluorescence stomatal conductance, compared with nontreated drought-stressed plants. addition, lower lipid peroxidation (MDA content) both H2 O2 NO contents primed nonprimed stressed suggest resulted systemic mitigation drought-induced nitro-oxidative stress. Nitro-oxidative homeostasis was achieved through regulation reactive oxygen (SOD, GR, CAT, APX) nitrogen species (NR, NADHde) metabolic enzymes at enzymatic and/or transcript level. Moreover, limitation cellular redox disruption mRNA antioxidant redox-related components (ADH, AOX, GST7, GST17), via osmoprotection proline homeostasis, (P5CS) gene expression level (P5CS, P5CR). Overall, novel results highlight importance a promising agent for enhancement conditions osmoprotective homeostasis.

Language: Английский

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The RNA‐seq approach to discriminate gene expression profiles in response to melatonin on cucumber lateral root formation

Journal of Pineal Research, Journal Year: 2013, Volume and Issue: 56(1), P. 39 - 50

Published: Oct. 8, 2013

Abstract Cucumber is a model cucurbitaceous plant with known genome sequence which important for studying molecular mechanisms of root development. In this study, RNA sequencing was employed to explore the mechanism melatonin‐induced lateral formation in cucumber under salt stress. Three groups seeds were examined, that is, primed without melatonin ( CK ), solution containing 10 or 500 μmol/L (M10 and M500, respectively). These then germinated NaCl solution. The ‐seq analysis generated 16,866,670 reads aligned 17,920 genes, provided abundant data formation. A total 17,552, 17,450, 17,393 genes identified from roots three treatments , M10 expression 121 significantly up‐regulated, 196 down‐regulated M500 showed an obvious increase on number roots. enriched 57 KEGG pathways 16 GO terms (M500 versus ). Based their pattern, peroxidase‐related selected as candidates be involved response. Several transcription factor families might play roles processes. related cell wall formation, carbohydrate metabolic processes, oxidation/reduction catalytic activity also different patterns result treatments. This ‐sequencing study will enable scientific community better define processes affect response treatment.

Language: Английский

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Melatonin pretreatment improves vanadium stress tolerance of watermelon seedlings by reducing vanadium concentration in the leaves and regulating melatonin biosynthesis and antioxidant-related gene expression

Journal of Plant Physiology, Journal Year: 2017, Volume and Issue: 220, P. 115 - 127

Published: Nov. 21, 2017

Language: Английский

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