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首页> 外文期刊>Frontiers of Agriculture in China >A proteomic approach to investigating the promotive effects of brassinolide on root growth of rice seedlings
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A proteomic approach to investigating the promotive effects of brassinolide on root growth of rice seedlings

机译:蛋白质组学方法研究油菜素内酯对水稻幼苗根系生长的促进作用

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摘要

Brassinolide influenced rice (Oryza sativa L.) root growth in a concentration-dependent manner. Roots grown in 0.1 nmol/L BL were 28% longer than those in the control. On the other hand, the roots grown in 1000 nmol/L BL were 65% shorter in comparison with those in the control. To investigate how BL influences rice root growth, proteome analysis techniques were applied. After BL treatments, total proteins from rice root were extracted separately. Extracted proteins were separated by two-dimensional polyacrylamide gel electrophoresis and analyzed using an automated protein sequencer and mass spectrometer. There were 33 proteins that showed differences in the accumulation levels as a result of treatments with BL. Proteins related to stress tolerance, enzymes, and cell structure were mainly found in the root. There were many proteins regulated by other hormone or light also. Results suggest that the physiologic functions of these proteins detected using powerful proteome analysis are implicated in root elongation triggered by BL. High-level brassinosteriod (BR) indicated that IAA amidohydrolase, which can release active IAA from IAA pool was increased, and the IAA level was so high that the root length was inhibited.
机译:油菜素内酯以浓度依赖的方式影响水稻(Oryza sativa L.)的根系生长。在0.1 nmol / L BL中生长的根比对照中的根长28%。另一方面,与对照相比,在1000 nmol / L BL中生长的根短65%。为了研究BL如何影响水稻根系生长,应用了蛋白质组分析技术。 BL处理后,分别从稻根中提取总蛋白。通过二维聚丙烯酰胺凝胶电泳分离提取的蛋白质,并使用自动蛋白质测序仪和质谱仪进行分析。 BL处理后,共有33种蛋白质显示了积累水平的差异。与抗逆性,酶和细胞结构有关的蛋白质主要存在于根中。还有许多其他激素或光调节的蛋白质。结果表明,使用强大的蛋白质组分析技术检测到的这些蛋白质的生理功能与BL触发的根伸长有关。高水平的油菜籽素(BR)表明,可以从IAA池中释放活性IAA的IAA酰胺水解酶增加了,而且IAA含量过高以至于根长受到抑制。

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