Flexibility in the structure of spiral flowers and its underlying mechanisms

doi:10.1038/NPLANTS.2015.188

	Flexibility in the structure of spiral flowers and its underlying mechanisms
	Wang, Peipei 1; Liao, Hong 1; Zhang, Wengen 1; Yu, Xianxian 1; Zhang, Rui ; Shan, Hongyan ; Duan, Xiaoshan 1; Yao, Xu 1; Kong, Hongzhi
	2016
发表期刊	NATURE PLANTS
ISSN	2055-026X
卷号	2 期号:1
摘要	Spiral flowers usually bear a variable number of organs, suggestive of the flexibility in structure. The mechanisms underlying the flexibility, however, remain unclear. Here we show that in Nigella damascena, a species with spiral flowers, different types of floral organs show different ranges of variation in number. We also show that the total number of organs per flower is largely dependent on the initial size of the floral meristem, whereas the respective numbers of different types of floral organs are determined by the functional domains of corresponding genetic programmes. By conducting extensive expression and functional studies, we further elucidate the genetic programmes that specify the identities of different types of floral organs. Notably, the AGL6-lineage member NdAGL6, rather than the AP1-lineage members NdFL1/2, is an A-function gene, whereas petaloidy of sepals is not controlled by AP3- or PI-lineage members. Moreover, owing to the formation of a regulatory network, some floral organ identity genes also regulate the boundaries between different types of floral organs. On the basis of these results, we propose that the floral organ identity determination programme is highly dynamic and shows considerable flexibility. Transitions from spiral to whorled flowers, therefore, may be explained by evolution of the mechanisms that reduce the flexibility.
学科领域	Plant Sciences
DOI	10.1038/NPLANTS.2015.188
收录类别	SCI
语种	英语
WOS关键词	FLORAL ORGAN IDENTITY ; MADS-BOX GENES ; ARABIDOPSIS-THALIANA ; BASAL ANGIOSPERMS ; HOMEOTIC GENES ; PETAL IDENTITY ; NEW-MODEL ; EVOLUTION ; EXPRESSION ; APETALA3
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000375385300002
出版者	NATURE PUBLISHING GROUP
文献子类	Article
出版地	LONDON
EISSN	2055-0278
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31125005, 31330007] ; CAS Interdisciplinary Innovation Team
作者邮箱	hzkong@ibcas.ac.cn
引用统计	被引频次：82[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25087
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Peipei,Liao, Hong,Zhang, Wengen,et al. Flexibility in the structure of spiral flowers and its underlying mechanisms[J]. NATURE PLANTS,2016,2(1).
APA	Wang, Peipei.,Liao, Hong.,Zhang, Wengen.,Yu, Xianxian.,Zhang, Rui.,...&Kong, Hongzhi.(2016).Flexibility in the structure of spiral flowers and its underlying mechanisms.NATURE PLANTS,2(1).
MLA	Wang, Peipei,et al."Flexibility in the structure of spiral flowers and its underlying mechanisms".NATURE PLANTS 2.1(2016).

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