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首页> 外文期刊>Journal of environmental biology >Influences of gibberellin and auxin on endogenous plant hormone and starch mobilization during rice seed germination under salt stress
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Influences of gibberellin and auxin on endogenous plant hormone and starch mobilization during rice seed germination under salt stress

机译：赤霉素和生长素对盐胁迫下水稻种子萌发过程中内源植物激素和淀粉动员的影响

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摘要

The soaking effects of two plant hormones, gibberellic acid (GA_3) and indole-3-acetic acid (IAA) on dehulled rice seeds exposed to low NaCl stress were investigated. Total soluble and reducing sugars in endosperms of rice seeds soaked with GA_3 (10 μM) increased gradually as germination progressed under low NaCl stress. This increase was more pronounced in IAA-soaked rice seeds than in GA_3-soaked rice seeds. Similarity of α-amylase activity in IM-soaked germinating rice seeds was much more stimulated than that soaked with GA_3. IAA- and GA_3-soaked rice seeds showed relatively high amounts of endogenous IAA under salt stress. In particular, IAA content increased more in GA_3-soaked rice seeds than in IAA-soaked rice seeds. Furthermore, gibberellin content in IAA-soaked rice seeds showed the highest concentrations among all the treatments. It suggests that recovery effect in starch mobilization and root elongation is in some part regulated by soaking treatment of plant hormones under lower salt stress in rice seed germination.
机译：研究了两种植物激素赤霉素（GA_3）和吲哚-3-乙酸（IAA）对低NaCl胁迫下脱壳的水稻种子的浸润作用。在低NaCl胁迫下，随着GA_3浸泡（10μM）浸种的水稻种子的胚乳中总可溶性糖和还原糖逐渐增加。 IAA浸种的水稻种子比GA_3浸种的水稻种子更明显。 IM浸泡的发芽水稻种子中α-淀粉酶活性的相似性比GA_3浸泡的α-淀粉酶活性大得多。在盐胁迫下，IAA和GA_3浸种的水稻种子显示出相对较高的内源IAA。尤其是，GA_3浸种的水稻种子中IAA含量的增加比IAA浸种的水稻种子中IAA含量的增加更多。此外，在所有处理中，IAA浸种的水稻种子中赤霉素含量最高。这表明在较低的盐分胁迫下，水稻种子萌发过程中，植物激素的浸泡处理可以部分调节淀粉动员和根伸长的恢复作用。

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