Evolutionary constraints on disparity of ericaceous pollen grains

doi:10.1093/aob/mcy212

	Evolutionary constraints on disparity of ericaceous pollen grains
	Yu, Ying 1,2; Schneider, Harald 3,4; Li, De-Zhu5 ; Wang, Hong1
通讯作者	Wang, Hong(wanghong@mail.kib.ac.cn)
	2019-04-11
发表期刊	ANNALS OF BOTANY
ISSN	0305-7364
卷号	123 期号:5 页码:805-813
摘要	Background and Aims Flowering plants show a high diversity of pollen morphology, assumed to reflect not only variations in the underlying design, but also stress imposed by ecological conditions related to pollen survival and germination. Both components are expected to constrain the accumulation of pollen disparity. However, this assumption has rarely been tested using empirical data. Methods This study is designed to test this hypothesis by inferring the accumulation of pollen disparity in Ericaceae, a large eudicot family with recent, ongoing radiations. with focus on three functionally significant pollen characters using a dated phylogeny. Key Results Multiple lines of evidence supported the hypothesis that pollen disparity in Ericaceae did not evolve steadily but rather pulsed over time, clearly decoupling from the relative constant rate pattern of species diversification inferred. In a 3-D pollen morphospace, most major clades appear to occupy distinct neighbouring regions, whereas the subfamily Epacridoideae overlaps extensively with other subfamilies. No evidence for correlations was found between dimension of pollen disparity and species diversity at either the subfamily or generic level. Furthermore, the distribution of species in present pollen morphospace showed a strong central tendency, with the core compartment containing a large number of species from species-rich genera. Conclusions The recovered evidence fits well with the expectations of limitations on available pollen morphological disparity, and suggests that innovation of pollen germination traits may have little effect on species diversification.
关键词	Pollen characters development constraints natural selection phylomorphospace disparity through time
DOI	10.1093/aob/mcy212
收录类别	SCI
语种	英语
WOS记录号	WOS:000483016800007
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/68766
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Wang, Hong
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Biodivers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 311121, Zhejiang, Peoples R China 3.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Dept Integrat Conservat, Mengla 666303, Yunnan, Peoples R China 4.Nat Hist Museum, Dept Life Sci, London SW7 5BD, England 5.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, Kunming 650201, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Yu, Ying,Schneider, Harald,Li, De-Zhu,et al. Evolutionary constraints on disparity of ericaceous pollen grains[J]. ANNALS OF BOTANY,2019,123(5):805-813.
APA	Yu, Ying,Schneider, Harald,Li, De-Zhu,&Wang, Hong.(2019).Evolutionary constraints on disparity of ericaceous pollen grains.ANNALS OF BOTANY,123(5),805-813.
MLA	Yu, Ying,et al."Evolutionary constraints on disparity of ericaceous pollen grains".ANNALS OF BOTANY 123.5(2019):805-813.

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