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Catabolism of strigolactones by a carboxylesterase

文献类型：期刊论文

作者Xu, Enjun; Chai, Liang3; Zhang, Shiqi3; Yu, Ruixue3; Zhang, Xixi1; Xu, Chongyi; Hu, Yuxin4
刊名NATURE PLANTS
出版日期2021
卷号7期号:11页码:1495-1504
ISSN号2055-026X
DOI10.1038/s41477-021-01011-y
文献子类Article
英文摘要Strigolactones (SLs) are carotenoid-derived plant hormones that control shoot branching and communications between host plants and symbiotic fungi or root parasitic plants. Extensive studies have identified the key components participating in SL biosynthesis and signalling, whereas the catabolism or deactivation of endogenous SLs in planta remains largely unknown. Here, we report that the Arabidopsis carboxylesterase 15 (AtCXE15) and its orthologues function as efficient hydrolases of SLs. We show that overexpression of AtCXE15 promotes shoot branching by dampening SL-inhibited axillary bud outgrowth. We further demonstrate that AtCXE15 could bind and efficiently hydrolyse SLs both in vitro and in planta. We also provide evidence that AtCXE15 is capable of catalysing hydrolysis of diverse SL analogues and that such CXE15-dependent catabolism of SLs is evolutionarily conserved in seed plants. These results disclose a catalytic mechanism underlying homoeostatic regulation of SLs in plants, which also provides a rational approach to spatial-temporally manipulate the endogenous SLs and thus architecture of crops and ornamental plants. Strigolactones (SLs) play a vital role in controlling plant shoot branching. A carboxylesterase and its orthologues were identified to be efficient hydrolases of SLs, which discloses a catabolic mechanism behind homoeostasis of SLs in seed plants.
学科主题Plant Sciences
出版地BERLIN
电子版国际标准刊号2055-0278
WOS关键词SHOOT DEVELOPMENT ; ACTS DOWNSTREAM ; ARABIDOPSIS ; GENES ; RESPONSES ; RECEPTOR ; KARRIKIN ; DWARF14 ; FAMILY ; PEA
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000717408000002
出版者NATURE PORTFOLIO
资助机构Strategic Priority Research Program of Chinese Academy of Sciences [XDB27030102] ; National Natural Science Foundation of China [31700253, 31830055]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26554]  
专题中科院植物分子生理学重点实验室
作者单位1.Natl Ctr Plant Gene Res, Beijing, Peoples R China
2.IST Austria, Klosterneuburg, Austria
3.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Enjun,Chai, Liang,Zhang, Shiqi,et al. Catabolism of strigolactones by a carboxylesterase[J]. NATURE PLANTS,2021,7(11):1495-1504.
APA Xu, Enjun.,Chai, Liang.,Zhang, Shiqi.,Yu, Ruixue.,Zhang, Xixi.,...&Hu, Yuxin.(2021).Catabolism of strigolactones by a carboxylesterase.NATURE PLANTS,7(11),1495-1504.
MLA Xu, Enjun,et al."Catabolism of strigolactones by a carboxylesterase".NATURE PLANTS 7.11(2021):1495-1504.

入库方式： OAI收割

来源：植物研究所

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