Symplastic guard cell connections buffer pressure fluctuations to promote stomatal function in grasses

IF 8.1 1区生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2025-02-15 DOI:10.1111/nph.70009

Matthew J. Wilson, Shauni McGregor, Clinton H. Durney, Melissa Tomkins, Jodie Armand, Richard S. Smith, Julie E. Gray, Richard J. Morris, Andrew J. Fleming

引用次数: 0

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共塑保护细胞连接缓冲压力波动，促进草的气孔功能

气孔通过膨胀驱动的保护细胞形状的反复变化来调节植物的气体交换，从而调节气孔孔径。禾本科植物是地球上分布最广的植物科之一，其独特的气孔结构被认为对其进化和农业的成功做出了重大贡献。它们结构的一个组成部分，很少受到关注，是警卫细胞对相邻细胞壁不连续的存在。在这里，我们证明了这些共塑连接在一系列草中存在，并使用有限元方法模拟来评估其功能意义的假设。结果表明，当铃状草保护细胞的膨胀压力相等时，气孔的打开最大，特别是在气孔打开初期的低压条件下。相比之下，我们证明了胀压差对肾形保护细胞开放的影响较小，这是大多数陆生植物的特征，在陆生植物中很少或没有观察到保护细胞连接。我们的数据描述了一种基于细胞力学的功能机制，这似乎促进了植物进化和作物发育的重大转变。

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来源期刊

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.