植物分类学报2024，Vol.62Issue(4) ：687-701.DOI:10.1111/jse.13021

Grass pollen surface ornamentation is diverse across the phylogeny:Evidence from northern South America and the global literature

Cai-Xia Wei Phillip E.Jardine Li-Mi Mao Luke Mander Mao Li William D.Gosling Carina Hoorn
植物分类学报2024，Vol.62Issue(4) ：687-701.DOI:10.1111/jse.13021
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  • 维普
  • 万方数据

Grass pollen surface ornamentation is diverse across the phylogeny:Evidence from northern South America and the global literature

Cai-Xia Wei 1Phillip E.Jardine 2Li-Mi Mao 3Luke Mander 4Mao Li 5William D.Gosling 1Carina Hoorn1
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作者信息

  • 1. Institute for Biodiversity and Ecosystem Dynamics,University of Amsterdam,Amsterdam,The Netherlands
  • 2. Institute of Geology and Palaeontology,University of Münster,Münster,Germany
  • 3. The State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China
  • 4. Department of Environment,Earth and Ecosystems,The open University,Milton Keynes,UK
  • 5. Donald Danforth Plant Science Center,Saint Louis,MI,USA
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Abstract

The grasses are one of the most diverse plant families on Earth.However,their classification and evolutionary history are obscured by their pollen stenopalynous(similar)morphology.A combination of high-resolution imaging of pollen surface ornamentation and computational analysis has previously been proposed as a promising tool to classify grass taxonomic boundaries.In this study,we test this hypothesis by studying Poaceae pollen across the phylogeny from plants collected in northern South America and also from published literature across the globe.We assessed if morphotypes that we establish using descriptive terminology are supported by computational analysis,if they vary along six(a)biotic variables and vary across the phylogeny.Based on this analysis,we constructed a reference framework for pollen surface ornamentation morphotypes.Our results showed that there is a wide variation of grass pollen surface ornamentation.We identified nine new and confirmed six known morphotypes,establishing a data set for 223 species(243 individual plant specimens)that represent 11 subfamilies.Computational analysis showed that our morphotypes are well-supported by two quantitative features of pollen sculptural elements(size and density).The specific data set and mapping of the phylogeny confirmed that pollen morphological sculpture is unrelated to(a)biotic variables and is diverse across the phylogeny.

Key words

computational analysis/exine/grass/phylogeny/pollen morphology/quantitative analysis

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基金项目

China Scholarship Council(CSC)grant and bursary funding from IBED,University of Amsterdam()

Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)Project(443701866)

Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing,China(XDB26000000)

Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing,China(41877437)

出版年

2024
植物分类学报
中国科学院植物研究所　中国植物学会

植物分类学报

CSTPCD
影响因子：0.322
ISSN：1674-4918
参考文献量2
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