气候变化领域集成服务门户(CCPortal): Phyllotactic patterning of gerbera flower heads

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DOI	10.1073/PNAS.2016304118
	Phyllotactic patterning of gerbera flower heads
	Zhang T.; Cieslak M.; Owens A.; Wang F.; Broholm S.K.; Teeri T.H.; Elomaa P.; Prusinkiewicz P.
发表日期	2021
ISSN	00278424
卷号	118 期号:13
英文摘要	Phyllotaxis, the distribution of organs such as leaves and flowers on their support, is a key attribute of plant architecture. The geometric regularity of phyllotaxis has attracted multidisciplinary interest for centuries, resulting in an understanding of the patterns in the model plants Arabidopsis and tomato down to the molecular level. Nevertheless, the iconic example of phyllotaxis, the arrangement of individual florets into spirals in the heads of the daisy family of plants (Asteraceae), has not been fully explained. We integrate experimental data and computational models to explain phyllotaxis in Gerbera hybrida.We show that phyllotactic patterning in gerbera is governed by changes in the size of the morphogenetically active zone coordinated with the growth of the head. The dynamics of these changes divides the patterning process into three phases: The development of an approximately circular pattern with a Fibonacci number of primordia near the head rim, its gradual transition to a zigzag pattern, and the development of a spiral pattern that fills the head on the template of this zigzag pattern. Fibonacci spiral numbers arise due to the intercalary insertion and lateral displacement of incipient primordia in the first phase. Our results demonstrate the essential role of the growth and active zone dynamics in the patterning of flower heads. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	auxin; flower head development; numerical canalization; phyllotaxis
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180121
作者单位	Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Finland; Department of Computer Science, University of Calgary, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Zhang T.,Cieslak M.,Owens A.,et al. Phyllotactic patterning of gerbera flower heads[J],2021,118(13).
APA	Zhang T..,Cieslak M..,Owens A..,Wang F..,Broholm S.K..,...&Prusinkiewicz P..(2021).Phyllotactic patterning of gerbera flower heads.Proceedings of the National Academy of Sciences of the United States of America,118(13).
MLA	Zhang T.,et al."Phyllotactic patterning of gerbera flower heads".Proceedings of the National Academy of Sciences of the United States of America 118.13(2021).