Time to update the sectional classification of Ilex (Aquifoliaceae): New insights from Ilex phylogeny, morphology, and distribution

doi:10.1111/jse.12935

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	Time to update the sectional classification of Ilex (Aquifoliaceae): New insights from Ilex phylogeny, morphology, and distribution
	Yang,Yi; Jiang,Lei; Liu,En-De; Liu,Wei-Li; Chen,Li; Kou,Yi-Xuan; Fan,Deng-Mei; Cheng,Shan-Mei; Zhang,Zhi-Yong; Peng,Hua
	2023
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1759-6831
摘要	Resolving the infrageneric classification of species-rich genera has been challenging in plant taxonomy. Ilex L. is a subcosmopolitan genus with over 600 species of dioecious trees and shrubs. Many classification systems based on morphological data have been proposed during the past 250 years. However, these systems (such as Loesener's and Galle's systems) may not truly reflect Ilex's evolutionary trajectories because most of those system's infrageneric hierarchies are not monophyletic. In this study, we reconstructed a phylogeny of Ilex L. comprising 15 moderately to highly supported clades using rigorously identified samples (202 species) and closely authenticated gene sequences of three nuclear genes [internal transcribed spacer (ITS), external transcribed spacer (ETS), and nepGS]. The newly generated phylogenetic tree resembles essentially that of the nuclear tree of Manen et al., but shows conspicuous topological differences with the phylogeny of Yao et al. Closely scrutinizing morphological variation and distributional patterns of 202 species, this study found that most lineages of Ilex identified herein are well defined by a particular trait or a combination of morphological and distributional traits, displaying phylogeny-morphology-distribution conformity that has seldom been uncovered in previous studies. Given the general phylogeny-morphology-distribution conformity revealed in this genus, we put forward an updated sectional classification system for Ilex that temporarily contains 14 sections. The new classification will provide a robust framework for studying the evolution and diversification of this ecologically and economically important genus.
关键词	classification system distribution Ilex L morphology nuclear gene phylogeny GLUTAMINE-SYNTHETASE NCPGS HISTORY GENES
学科领域	Plant Sciences
DOI	10.1111/jse.12935
收录类别	SCI
WOS记录号	WOS:000921515700001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75260
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Yang,Yi,Jiang,Lei,Liu,En-De,et al. Time to update the sectional classification of Ilex (Aquifoliaceae): New insights from Ilex phylogeny, morphology, and distribution[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2023.
APA	Yang,Yi.,Jiang,Lei.,Liu,En-De.,Liu,Wei-Li.,Chen,Li.,...&Peng,Hua.(2023).Time to update the sectional classification of Ilex (Aquifoliaceae): New insights from Ilex phylogeny, morphology, and distribution.JOURNAL OF SYSTEMATICS AND EVOLUTION.
MLA	Yang,Yi,et al."Time to update the sectional classification of Ilex (Aquifoliaceae): New insights from Ilex phylogeny, morphology, and distribution".JOURNAL OF SYSTEMATICS AND EVOLUTION (2023).

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