Melatonin enhances plant growth and abiotic stress tolerance in soybean plants.
Melatonin enhances plant growth and abiotic stress tolerance in soybean plants.
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DOI：
10.1093/jxb/eru392
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发表时间：
2015-02
影响因子：
6.9
通讯作者：
Chen SY
中科院分区：
文献类型：
--
作者：
Wei W;Li QT;Chu YN;Reiter RJ;Yu XM;Zhu DH;Zhang WK;Ma B;Lin Q;Zhang JS;Chen SY
我们证明，使用种子包衣方法，褪黑激素促进大豆生长，种子生产，并通过调节细胞分裂，光合作用，碳水化合物代谢，脂肪酸生物合成和抗坏血酸代谢的胁迫耐受性。褪黑激素是一种众所周知的药剂，在动物中发挥多种作用。它在植物中的可能功能还不太清楚。本文研究了褪黑激素（N-乙酰基-5-甲氧基色胺）对大豆生长发育的影响。从叶片大小和株高来看，褪黑激素包衣种子显著促进大豆生长。在大豆产量和脂肪酸含量方面也观察到这种提高。褪黑激素增加角果数和种子数，但不增加百粒重。褪黑激素还提高大豆对盐和干旱胁迫的耐受性。转录组分析表明，盐胁迫抑制了与结合、氧化还原酶活性/过程和次级代谢过程相关的基因的表达。褪黑激素上调了盐胁迫抑制基因的表达，从而缓解了盐胁迫对基因表达的抑制作用。进一步详细分析受影响的途径文件，褪黑激素可能通过增强参与细胞分裂，光合作用，碳水化合物代谢，脂肪酸生物合成和抗坏血酸代谢的基因实现其在大豆中的促进作用。我们的研究结果表明，褪黑激素具有显着的潜力，以改善大豆生长和种子生产。进一步的研究应该揭示更多关于大豆和其他作物中褪黑激素功能的分子机制。
We demonstrate, using the seed-coating method, that melatonin promotes soybean growth, seed production, and stress tolerance by regulating cell division, photosynthesis, carbohydrate metabolism, fatty acid biosynthesis, and ascorbate metabolism. Melatonin is a well-known agent that plays multiple roles in animals. Its possible function in plants is less clear. In the present study, we tested the effect of melatonin (N-acetyl-5-methoxytryptamine) on soybean growth and development. Coating seeds with melatonin significantly promoted soybean growth as judged from leaf size and plant height. This enhancement was also observed in soybean production and their fatty acid content. Melatonin increased pod number and seed number, but not 100-seed weight. Melatonin also improved soybean tolerance to salt and drought stresses. Transcriptome analysis revealed that salt stress inhibited expressions of genes related to binding, oxidoreductase activity/process, and secondary metabolic processes. Melatonin up-regulated expressions of the genes inhibited by salt stress, and hence alleviated the inhibitory effects of salt stress on gene expressions. Further detailed analysis of the affected pathways documents that melatonin probably achieved its promotional roles in soybean through enhancement of genes involved in cell division, photosynthesis, carbohydrate metabolism, fatty acid biosynthesis, and ascorbate metabolism. Our results demonstrate that melatonin has significant potential for improvement of soybean growth and seed production. Further study should uncover more about the molecular mechanisms of melatonin’s function in soybeans and other crops.
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影响因子：
5.6
作者：
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作者：
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