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题名: EVOLUTION OF ANGIOSPERM POLLEN. I. INTRODUCTION
作者: Wortley, Alexandra H.1; null(王红)2; Lu, Lu2; null(李德铢)2; Blackmore, Stephen1
刊名: ANNALS OF THE MISSOURI BOTANICAL GARDEN
出版日期: 2015
卷号: 100, 期号:3, 页码:177-226
关键词: Ancestral character states ; diagnostic characters ; evolution ; flowering plants ; optimization ; palynology ; phylogeny ; synapomorphy ; trait evolution
学科分类: Plant Sciences
DOI: 10.3417/2012047
通讯作者: Wortley,AH (reprint author),Royal Bot Garden,20a Inverleith Row,Edinburgh EH3 5LR,Midlothian,Scotland. ; a.wortley@rbge.ac.uk ; wanghong@kib.ac.cn
文章类型: Article
英文摘要: This paper is the first in a series that documents the diversity, distribution, and evolution of palynological characters across angiosperms in a contemporary phylogenetic context, using modern optimization methods. The objectives of the series are: (1) to describe the diversity of pollen morphologies across the angiosperms; (2) to estimate ancestral palynological character states, diagnostic characters, and synapomorphies for monophyletic groups; (3) to highlight and interpret inferred patterns and processes of evolution in palynological characters; and (4) to provide a framework for the placement of enigmatic taxa (including fossil taxa) based on pollen morphology. This first paper examines the methods available for such a study and presents an overview of palynological characters across angiosperms as a whole. Using a well-supported, recent, molecular phylogeny, we consider the effects of coding strategy, method of optimization, and starting tree topology upon inference of trait evolution. Coding strategy and optimization method had significant effects upon inferred ancestral character states, the latter probably due to the different evolutionary models applied. Phylogenetic topology had little effect upon inferred ancestral character states, because the uncertainty in topology at this level involved only nodes where few character state changes occurred. Several palynological characters showed consistent, structured patterns in the context of phylogeny: angiosperms are distinguished from other seed plants by character states including supratectal elements echinate and less than 1 mu m in size, and infratectum structure columellate; eudicots, as recognized in previous studies, may be defined by globose, isopolar, radially symmetrical grains with three equatorial apertures. We present a framework for the remainder of the series, in which the angiosperms are divided into nine monophyletic and paraphyletic groups each having a similar level of pollen variability, and a set of recommendations for the analysis of these groups. The series will provide a reference for future palynological and systematic studies and an approach that may be replicated for other character sets.
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
关键词[WOS]: ANCESTRAL CHARACTER STATES ; PHYLOGENY GROUP CLASSIFICATION ; COMPARATIVE FLORAL STRUCTURE ; TRITICUM-AESTIVUM POLLEN ; FLOWERING PLANTS ; CLADISTIC-ANALYSIS ; BASAL ANGIOSPERMS ; TAXONOMIC SIGNIFICANCE ; EXINE ULTRASTRUCTURE ; NUPHAR NYMPHAEACEAE
收录类别: SCI
项目资助者: Sibbald Trust at the Royal Botanic Garden Edinburgh ; National Natural Science Foundation of China [31270272, 31320103919] ; open funds of the Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences [KLBB201202]
语种: 英语
WOS记录号: WOS:000351321700006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/20650
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Royal Bot Garden, Edinburgh EH3 5LR, Midlothian, Scotland
2.Chinese Acad Sci, Kunming Inst Bot, Lab Biodivers & Biogeog, Kunming, Yunnan, Peoples R China
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