Melatonin promotes water‐stress tolerance, lateral root formation, and seed germination in cucumber (<i>Cucumis sativus</i> L.)

Zhang, Na; Zhao, Bing; Zhang, Haijun; Weeda, Sarah; Yang, Chunwu; Yang, Zi-Cai; Ren, Shuxin; Guo, Yang-Dong

doi:10.1111/j.1600-079x.2012.01015.x

Cited by 519 publications

(449 citation statements)

References 63 publications

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“…The pre-sowing seed treatment with MEL protected red cabbage seedlings against toxic Cu ion concentrations as well as MEL application to cucumber and corn seeds had a beneficial effect on the growth of seedlings and crop production of plants which germinated from them, especially those subjected to cold ) and water-stress (Zhang et al 2013).…”

Section: Regulatory Roles Of Mel In Plantsmentioning

confidence: 99%

Melatonin, an underestimated natural substance with great potential for agricultural application

Janas

Posmyk

2013

Acta Physiol Plant

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Melatonin (MEL) was thought to be only a neurotransmitter found in vertebrates until its detection in other organisms including plants. Although the number of publications on MEL function in plants is expanding, the knowledge of this subject is still insufficient. Among many functions which MEL performs in plants, its role as an antioxidant and a growth promoter is most supported by experimental evidence. This compound is an independent plant growth regulator and it may mediate the activities of other plant growth regulators. Due to its antioxidant properties MEL may also stabilize cell redox status and protect tissues against reactive oxygen and nitrogen species which accumulated under stressful environment. Some researchers propose that MEL could be used to improve the phytoremediation efficiency of plants against different pollutants. In this paper we show that exogenous MEL applied into the seeds could be a good biostimulator improving not only seed germination, seedling/plant growth but also crop production especially under stress conditions. We also believe that this compound can increase food quality (the aspect of functional food) and may improve human health. Since MEL is inexpensive and safe for animals and humans its application as a biostimulator could be a good, feasible and cost-effective method useful in agriculture.

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Section: Regulatory Roles Of Mel In Plantsmentioning

confidence: 99%

Melatonin, an underestimated natural substance with great potential for agricultural application

Janas

Posmyk

2013

Acta Physiol Plant

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“…The electrolyte leakage (EL) was measured to evaluate the degree of cold injury in V. radiata roots [28]. The roots (0.5 g) were washed 3 times in deionized water, weighed and immediately transferred to glass tubes containing 10 mL of deionized water (EC o ).…”

Section: Electrolyte Leakage Testmentioning

confidence: 99%

Involvement of melatonin applied to Vigna radiata L. seeds in plant response to chilling stress

2014

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The impact of melatonin (50 µM L−1) applied to Vigna radiata seeds by hydro-priming on phenolic content, L-phenylalanine ammonialyase (PAL) activity, MEL level, antioxidant properties of ethanol extracts as well as electrolyte leakage from chilled and re-warmed Vigna radiata roots of seedlings were examined. Seedlings obtained from non-primed seeds, hydro-primed and hydro-primed with MEL were investigated after 2 days of chilling and 2 days of re-warming. At 25°C, the level of MEL in roots derived from seeds hydro-primed with MEL was 7-fold higher than in roots derived from non-primed seeds. However, the content of MEL significantly decreased in all variants investigated after re-warming, in contrast to PAL activity and phenolic levels, which reached the highest values. The antioxidant capacity of ethanol extracts from chilled and re-warmed roots, determined by ABTS+· assay, was correlated with phenolic content while the reducing ability of these extracts, determined by the FRAP method, correlated with PAL activity. However, both were the highest in rewarmed roots with applied MEL, which was accompanied by a significant decline in electrolyte leakage. Taken together, results may indicate that MEL can play a positive role in plant acclimation to stressful conditions and activation of phenolic pathway by this molecule.

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“…Exogenous application of 10 μM melatonin was efficient and induced more and longer roots in Lupinus (Arnao, Hernández-Ruiz, 2007); however, the same concentration of melatonin was inhibitory for adventitious rooting in the commercial sweet cherry (Sarropoulou et al, 2012). In addition, seeds treated by melatonin could promote the seedling growth and seed production of maize, soybean, and cucumber Zhang et al, 2013;Wei et al, 2015). Meng (2016) suggests that wheat seed priming with melatonin could enhance the biomass and yield once plants suffered water stress during filling stage.…”

Section: Introductionmentioning

confidence: 99%

Physiological response of plants to polyethylene glycol (PEG-6000) by exogenous melatonin application in wheat

Zhang

Wang

et al. 2017

Zemdirbyste-Agriculture

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The regulation effect of melatonin on water use efficiency of leaf and potential mechanisms related to phytohormone of leaf/root were investigated using two wheat (Triticum aestivum L.) cultivars with contrasting drought tolerance: drought-tolerant 'Hengguan35' (HG35) and growing in irrigated fields 'Jimai22' (JM22). Four treatments, including normal water treatment (N), 20% polyethylene glycol (PEG) (P), P + 1 μM melatonin and P + 10 μM melatonin were conducted. Results indicated that exogenous melatonin could significantly improve net photosynthetic rate (Pn), instantaneous water use efficiency (WUE inst. ) and intrinsic water use efficiency (WUE intr. ) of cultivar 'Jimai22'. This was possibly related to increasing root auxin (IAA), zeatin riboside (ZR) content and inhibiting abscisic acid (ABA), hydrogen peroxide (H 2 O 2 ) and aminocyclopropane-1-carboxylic acid (ACC) production in leaf. However, for cultivar 'Hengguan35', 1 μM and 10 μM melatonin did not improve photosynthetic rate and chlorophyll content even took negative effect on that. This could be caused by high vapour pressure deficit (VPD) and high H 2 O 2 contents in leaf. Also, as a drought-tolerant cultivar, 'Hengguan35' possesses some physiological regulation itself such as increasing IAA and ZR content in root and leaf, inhibiting H 2 O 2 production in root. But ABA and ACC content in root was not inhibited, even increased with melatonin under drought treatment. ACC was a potential central player in the hormone cross-talks that regulated leaf and root growth and physiological function. These results suggest that the effect of exogenous melatonin application on drought-resistance in seedling was distinct owing to wheat cultivars with different drought sensitivity, and this was also involved in complicated mechanism of physiological regulation to keep water status. Suitable application of melatonin thus can be an effective way in improving plant drought tolerance in wheat.

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Melatonin promotes water‐stress tolerance, lateral root formation, and seed germination in cucumber (Cucumis sativus L.)

Cited by 519 publications

References 63 publications

Melatonin, an underestimated natural substance with great potential for agricultural application

Melatonin, an underestimated natural substance with great potential for agricultural application

Involvement of melatonin applied to Vigna radiata L. seeds in plant response to chilling stress

Physiological response of plants to polyethylene glycol (PEG-6000) by exogenous melatonin application in wheat

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