The geometry of the compound leaf plays a significant role in the leaf movement of Medicago truncatula modulated by mtdwarf4a

doi:10.1111/nph.17198

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 2012年后新成立研究组

	The geometry of the compound leaf plays a significant role in the leaf movement of Medicago truncatula modulated by mtdwarf4a
	Zhao, Weiyue 5; Bai, Quanzi 5; Zhao, Baolin ; Wu, Qing 5; Wang, Chaoqun 5; Liu, Ye 4; Yang, Tianquan 3; Liu, Yu ; He, Hua ; Du, Shanshan 5
刊名	NEW PHYTOLOGIST
	2021
卷号	230 期号:2 页码:475-484
关键词	brassinosteroid (BR) biosynthesis compound leaf geometry DWARF4 leaf movement Medicago truncatula pulvinus
ISSN号	0028-646X
DOI	10.1111/nph.17198
英文摘要	In most legumes, two typical features found in leaves are diverse compound forms and the pulvinus-driven nyctinastic movement. Many genes have been identified for leaf-shape determination, but the underlying nature of leaf movement as well as its association with the compound form remains largely unknown. Using forward-genetic screening and whole-genome resequencing, we found that two allelic mutants of Medicago truncatula with unclosed leaflets at night were impaired in MtDWARF4A (MtDWF4A), a gene encoding a cytochrome P450 protein orthologous to Arabidopsis DWARF4. The mtdwf4a mutant also had a mild brassinosteroid (BR)-deficient phenotype bearing pulvini without significant deficiency in organ identity. Both mtdwf4a and dwf4 could be fully rescued by MtDWF4A, and mtdwf4a could close their leaflets at night after the application of exogenous 24-epi-BL. Surgical experiments and genetic analysis of double mutants revealed that the failure to exhibit leaf movement in mtdwf4a is a consequence of the physical obstruction of the overlapping leaflet laminae, suggesting a proper geometry of leaflets is important for their movement in M. truncatula. These observations provide a novel insight into the nyctinastic movement of compound leaves, shedding light on the importance of open space for organ movements in plants.
学科主题	Plant Sciences
语种	英语
WOS记录号	WOS:000618234500001
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/12183]
专题	西双版纳热带植物园_2012年后新成立研究组
作者单位	1.Oklahoma State Univ, Inst Agr Biosci, Dept Plant & Soil Sci, 3210 Sam Noble Pkwy, Ardmore, OK 73401 USA 2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China 3.Univ Sci & Technol China, Sch Life Sci, Hefei 230027, Anhui, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Ctr Excellence Mol Plant Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, 88 Xuefu Rd, Kunming 650223, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Weiyue,Bai, Quanzi,Zhao, Baolin,et al. The geometry of the compound leaf plays a significant role in the leaf movement of Medicago truncatula modulated by mtdwarf4a[J]. NEW PHYTOLOGIST,2021,230(2):475-484.
APA	Zhao, Weiyue.,Bai, Quanzi.,Zhao, Baolin.,Wu, Qing.,Wang, Chaoqun.,...&Chen, Jianghua.(2021).The geometry of the compound leaf plays a significant role in the leaf movement of Medicago truncatula modulated by mtdwarf4a.NEW PHYTOLOGIST,230(2),475-484.
MLA	Zhao, Weiyue,et al."The geometry of the compound leaf plays a significant role in the leaf movement of Medicago truncatula modulated by mtdwarf4a".NEW PHYTOLOGIST 230.2(2021):475-484.