Phosphate promotes Arabidopsis root skewing and circumnutation through reorganisation of the microtubule cytoskeleton

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2024-10-03 DOI:10.1111/nph.20152

Hui Sheng, Harro J. Bouwmeester, Teun Munnik

引用次数: 0

Abstract

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磷酸盐通过重组微管细胞骨架促进拟南芥根的倾斜和环行。

磷酸盐（Pi）在植物生长和发育中起着关键作用。因此，植物表现出一系列适应性来获取磷，包括根系结构（RSA）的变化。Pi 是否会引发根系定向生长尚不清楚。我们研究了拟南芥根系是否能感知π并向π生长，即是否表现出向磷性。虽然根系确实表现出明显的π特异性定向生长反应，但它总是向左生长，与π梯度的方向无关。我们发现，增加 KH2PO4 的浓度会在主根和侧根中引发剂量依赖性的倾斜反应。这种现象是π特异性的（其他营养物质不会引发这种现象），涉及根伸长区表皮细胞中微管细胞骨架的重组。较高的π水平会促进左旋细胞文件旋转，从而导致根的顺时针右旋生长和向左倾斜，这是根系螺旋运动（环行）的结果。我们的研究结果揭示了π在根系生长中的作用，并可能为作物育种提供新的见解，以优化RSA和钾的利用效率。

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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.