Ethylene participates in the brassinolide-regulated asymmetric growth of O. sativa root
Ethylene participates in the brassinolide-regulated asymmetric growth of O. sativa root
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DOI：
10.1016/j.sajb.2018.08.017
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发表时间：
2018-11-01
影响因子：
3.1
通讯作者：
Yu, Xudong
中科院分区：
文献类型：
--
作者：
Cai, Zeping;Yang, Wen;Yu, Xudong
本文研究了油菜素内酯（BR）诱导的根系不对称生长及其与乙烯（ETH）的相互作用。结果表明，在光照和黑暗条件下，2，4-表油菜素内酯（2，4-eBL）均可诱导单子叶水稻唾液初生根的不对称生长，形成根卷曲和根波。同样，ETH也能诱导O.唾液形成钩状结构。当同时加入2 × 10（-8）M的2，4-eBL和乙烯抑制剂时，硫代硫酸银（STS）和氨氧乙酸可完全消除2，4-eBL诱导的根系不对称生长，而CoCl 2也可部分消除2，4-eBL诱导的根系不对称生长。同时，ETH抑制剂的作用是可逆的，其中2，4-eBL可以发挥其作用，诱导O.去除STS后，sativa生根。这些结论为进一步研究BR与ETH的关系提供了科学依据。(C)2018款萨博。Elsevier B. V.出版，保留所有权利。
In this work, brassinosteroid (BR)-induced root asymmetric growth as well as its interaction with ethylene (ETH) were investigated. The results reveal that 2, 4-epibrassinolide (2,4-eBL) can induce asymmetric growth of the primary roots of monocotyledonous Oryza saliva to form root coils and waves under both illumination and dark conditions. Similarly, ETH can also induce asymmetric growth of the primary roots of O. saliva to form hooked structures. Upon adding a concentration of 2 x 10(-8) M 2,4-eBL and inhibitors of ethylene simultaneously, silver thiosulfate (STS) and aminooxyacetic acid could completely eliminate the 2,4-eBL-induced asymmetric growth of roots, while the asymmetric growth could also be partly eliminated by CoCl2. Meanwhile, the effect of ETH inhibitors was proven to be reversible, wherein 2,4-eBL can exert its function and induce the asymmetric growth of O. sativa roots after the removal of STS. These conclusions provide a scientific foundation for further investigations of the relationships between BR and ETH. (C) 2018 SAAB. Published by Elsevier B.V. All rights reserved.