Exogenous melatonin reduces the inhibitory effect of osmotic stress on photosynthesis in soybean
Exogenous melatonin reduces the inhibitory effect of osmotic stress on photosynthesis in soybean
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外源褪黑素降低渗透胁迫对大豆光合作用的抑制作用
DOI：
10.1371/journal.pone.0226542
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发表时间：
2019-12
期刊：
影响因子：
3.7
通讯作者：
Wu Yaokun
中科院分区：
文献类型：
--
作者：
Zhang Mingcong;He Songyu;Zhan Yingce;Qin Bin;Jin Xijun;Wang Mengxue;Zhang Yuxian;Hu Guohua;Teng Zhanlin;Wu Yaokun
了解外源褪黑激素与水分亏缺胁迫之间的关系对于农业中大豆 (Glycine max (L.) Merrill) 植物实现高产和减轻水分亏缺胁迫的影响至关重要。本研究探讨了聚乙二醇（PEG）6000诱导的水分亏缺胁迫下外源褪黑素对大豆光合能力的影响。我们于2018年以大豆（Glycine max L. Merrill）品种绥农26进行了盆栽实验。我们确定了模拟干旱浓度的PEG 6000（15％，w/v）和适当的褪黑素浓度（100％，w/v）的影响。 μmol/L)对大豆幼苗生长和花期影响的初步试验。我们通过叶面喷洒和根部施用外源褪黑激素来确定水分亏缺胁迫期间对叶片光合作用的影响。我们的研究结果表明，15% PEG 6000 对大豆幼苗生长和开花期有明显的抑制作用，由于活性氧（ROS）（H2O2 和 O2·-）积累而引起氧化应激和损伤，并可能降低空气交换参数和光系统 II（PSII）效率。外源褪黑素的施用显着缓解了PEG 6000胁迫对幼苗和开花生长以及气体交换参数的抑制作用，潜在地提高了PSII效率，提高了叶面积指数（LAI）和干物质积累，通过增加抗氧化酶（SOD、POD和CAT）活性减缓了氧化应激和对叶片的损伤，降低了丙二醛（MDA）含量，最终提高了大豆产量。总体而言，本研究结果表明，在大豆苗期和开花期施用外源褪黑素可有效减轻水分亏缺胁迫造成的植株损伤，提高大豆植株的抗旱能力。此外，结果表明，根部施用外源褪黑素优于叶面喷施。
Understanding the relationship between exogenous melatonin and water deficit stress is crucial for achieving high yields and alleviating the effects of water deficit stress on soybean (Glycine max (L.) Merrill) plants in agriculture. This study investigated the effects of exogenous melatonin on soybean photosynthetic capacity under water deficit stress induced by polyethylene glycol (PEG) 6000. We conducted a potting experiment in 2018 using the soybean (Glycine max L. Merrill) cultivar Suinong 26. We identified the impacts of a concentration of PEG 6000 simulating drought (15%, w/v) and an appropriate melatonin concentration (100 μmol/L) on the growth of soybean seedlings and flowering stages in a preliminary test. We applied exogenous melatonin by foliar spraying and root application to determine the effects on leaf photosynthesis during water deficit stress. Our results indicated that 15% PEG 6000 had an obvious inhibitory effect on the growth of soybean seedlings and flowering stages, causing oxidative stress and damage due to reactive oxygen species (ROS) (H2O2 and O2·-) accumulation and potentially reducing air exchange parameters and photosystem II (PSII) efficiency. The application of exogenous melatonin significantly relieved the inhibitory effects of PEG 6000 stress on seedlings and flowering growth, and gas exchange parameters, potentially improved PSII efficiency, improved the leaf area index (LAI) and the accumulation of dry matter, slowed down oxidative stress and damage to leaves by increasing the activity of antioxidant enzymes (SOD, POD, and CAT), reduced the content of malondialdehyde (MDA), and ultimately improved soybean yield. Overall, the results of this study demonstrated that application of exogenous melatonin at the seedlings and flowering stages of soybean is effective in alleviating plant damage caused by water deficit stress and improving the drought resistance of soybean plants. In addition, the results showed that application of exogenous melatonin by root is superior to foliar spraying.
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DOI：
10.1007/bf00202428
发表时间：
1992-06
期刊：
Trees
影响因子：
--
作者：
G. Wallin;L. Skärby
通讯作者：
G. Wallin;L. Skärby
影响因子：
5.6
作者：
Golldack D;Li C;Mohan H;Probst N
通讯作者：
Probst N
影响因子：
5.7
作者：
Lixin Xu;J. Yu;Liebao Han;Bingru Huang
通讯作者：
Lixin Xu;J. Yu;Liebao Han;Bingru Huang
影响因子：
--
作者：
Li RongHua, Li RongHua;Guo PeiGuo, Guo PeiGuo;Guo, P. G.
通讯作者：
Guo, P. G.
DOI：
10.1071/pp99019
发表时间：
1999-01-01
期刊：
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY
影响因子：
--
作者：
Escalona, JM;Flexas, J;Medrano, H
通讯作者：
Medrano, H