A 23-million-year record of morphological evolution within Neotropical grass pollen

IF 8.1 1区 生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2024-10-27 DOI:10.1111/nph.20214
Caixia Wei, Mao Li, Limi Mao, Luke Mander, Phillip E. Jardine, William D. Gosling, Carina Hoorn
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新热带禾本科花粉形态演变的 2300 万年记录。
南美洲以草为主的生物群落已有约 2000 万年的历史,但人们对它们的演化和内在驱动因素仍然知之甚少。在这里,我们采用了一种结合扫描电子显微镜成像和计算分析的新方法,对新热带地区自早中新世(2300 万年前)以来的禾本科(Poaceae)花粉微角的形态计量进行了量化。我们收集了三个时空花粉集,以进一步阐明禾本科植物在不同时空的变异和进化特征。我们的研究结果表明,三个空间-时间花粉组占据了其外显子形态空间中独特的、部分重叠的区域。随着时间的推移,这种转变的方向是一致的,都是朝着较不密集的装饰物方向发展。有趣的是,所占据的形态空间范围并无明显变化。这是首次发现禾本科植物花粉微装饰随着时间的推移而发生的真正形态变化。我们推测,早中新世以来禾本科花粉微丝的变化是由进化过程(进化漂移和/或定向选择)以及可能的大陆尺度迁移所驱动的。花粉微角的高度多样性很可能与它们在新近纪的成功进化有关。
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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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