A crosstalk between auxin and brassinosteroid regulates leaf shape by modulating growth anisotropy

doi:10.1016/j.molp.2021.03.011

	A crosstalk between auxin and brassinosteroid regulates leaf shape by modulating growth anisotropy
	Xiong, Yuanyuan 6,7,8; Wu, Binbin 1,6,7,8; Du, Fei 7,8; Guo, Xiaolu 5; Tian, Caihuan 7,8; Hu JR(胡锦荣)2,3,4; Lv SQ(吕守芹)2,3,4; Long M(龙勉)2,3,4; Zhang, Lei 5; Wang, Ying 6
刊名	MOLECULAR PLANT
	2021-06-07
卷号	14 期号:6 页码:949-962
关键词	leaf shape proximodistal axis growth anisotropy mechanical signals AUXIN RESPONSE FACTOR brassinosteroids
ISSN号	1674-2052
DOI	10.1016/j.molp.2021.03.011
通讯作者	Zhang, Lei(zhangl@math.pku.edu.cn) ; Wang, Ying(yingwang@ucas.edu.cn) ; Jiao, Yuling(yljiao@genetics.ac.cn)
英文摘要	Leaf shape is highly variable within and among plant species, ranging from slender to oval shaped. This is largely determined by the proximodistal axis of growth. However, little is known about how proximal-distal growth is controlled to determine leaf shape. Here, we show that Arabidopsis leaf and sepal proximodistal growth is tuned by two phytohormones. Two class A AUXIN RESPONSE FACTORs (ARFs), ARF6 and ARF8, activate the transcription of DWARF4, which encodes a key brassinosteroid (BR) biosynthetic enzyme. At the cellular level, the phytohormones promote more directional cell expansion along the proximodistal axis, as well as final cell sizes. BRs promote the demethyl-esterification of cell wall pectins, leading to isotropic in-plane cell wall loosening. Notably, numerical simulation showed that isotropic cell wall loosening could lead to directional cell and organ growth along the proximodistal axis. Taken together, we show that auxin acts through biosynthesis of BRs to determine cell wall mechanics and directional cell growth to generate leaves of variable roundness.
分类号	一类
资助项目	National Natural Science Foundation of China (NSFC)[31825002] ; National Natural Science Foundation of China (NSFC)[31861143021] ; Key Research Project of the Frontier Science of CAS[ZDBS-LY-SM012] ; CAS[XDA24020203] ; National Key R&D Program of China[2019YFA0903902] ; NSFC[32000507] ; NSFC[31961133010] ; NSFC[31970805] ; NSFC[31871245] ; Youth Innovation Promotion Association of CAS[2017139]
WOS关键词	ARABIDOPSIS-THALIANA ; EXPRESSION MAP ; GENE ; WALL ; INITIATION ; MUTANT ; BIOSYNTHESIS ; RESPONSES ; MERISTEM ; REVEALS
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
语种	英语
WOS记录号	WOS:000661160400015
资助机构	National Natural Science Foundation of China (NSFC) ; Key Research Project of the Frontier Science of CAS ; CAS ; National Key R&D Program of China ; NSFC ; Youth Innovation Promotion Association of CAS
其他责任者	Zhang, Lei ; Wang, Ying ; Jiao, Yuling
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86922]
专题	力学研究所_国家微重力实验室
作者单位	1.Baqiao Municipal Hlth Commiss, Xian 710038, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Beijing Key Lab Engn Construct & Mechanobiol, Inst Mech, Beijing 100190, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Ctr Biomech & Bioengn, Key Lab Micrograv,Natl Micrograv Lab, Beijing 100190, Peoples R China; 5.Peking Univ, Beijing Int Ctr Math Res, Beijing 100871, Peoples R China; 6.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China; 7.Chinese Acad Sci, Inst Genet & Dev Biol, Innovat Acad Seed Design, Natl Ctr Plant Gene Res Beijing, Beijing 100101, Peoples R China; 8.Chinese Acad Sci, Inst Genet & Dev Biol, Innovat Acad Seed Design, State Key Lab Plant Genom, Beijing 100101, Peoples R China;
推荐引用方式 GB/T 7714	Xiong, Yuanyuan,Wu, Binbin,Du, Fei,et al. A crosstalk between auxin and brassinosteroid regulates leaf shape by modulating growth anisotropy[J]. MOLECULAR PLANT,2021,14(6):949-962.
APA	Xiong, Yuanyuan.,Wu, Binbin.,Du, Fei.,Guo, Xiaolu.,Tian, Caihuan.,...&Jiao, Yuling.(2021).A crosstalk between auxin and brassinosteroid regulates leaf shape by modulating growth anisotropy.MOLECULAR PLANT,14(6),949-962.
MLA	Xiong, Yuanyuan,et al."A crosstalk between auxin and brassinosteroid regulates leaf shape by modulating growth anisotropy".MOLECULAR PLANT 14.6(2021):949-962.