ALMT12与SLAC1相互作用，抑制SLAC1调节气孔运动，提高植物生物量

IF 6.9 1区生物学 Q1 PLANT SCIENCES

Plant Physiology Pub Date : 2025-09-30 DOI:10.1093/plphys/kiaf460

Ping Lin, Hui Zhou, Qing Zhao, Liumei Li, Jiamei Liu, Zhuoran Hu, Yunxin Luo, Cuizhu Feng, Yu Long

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引用次数: 0

摘要

气孔是通过调节气孔的孔径来响应不同的环境和内部信号，从而控制二氧化碳和水的交换。SLOW -type阴离子通道- associated 1 （SLAC1）和Rapid-type al - activated MALATE TRANSPORTER 12 （ALMT12）阴离子通道介导保护细胞内阴离子外排，促进气孔关闭。这些通道以前被认为是两个独立的阴离子渗透孔，它们的激活动力学、电压依赖性和阴离子选择性不同。在本研究中，我们发现ALMT12与爪蟾卵母细胞和拟南芥（Arabidopsis thaliana）保护细胞中的sla1阴离子通透性相互作用并抑制其通透性。这种通道调节机制调节了高CO2条件下的气孔运动，提高了植物生物量。

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ALMT12 interacts with and inhibits SLAC1 to modulate stomatal movements and enhance plant biomass

Stomata are pores that control carbon dioxide (CO2) and water exchange by modulating their aperture in response to different environmental and internal signals. The Slow-type SLOW ANION CHANNEL-ASSOCIATED 1 (SLAC1) and Rapid-type ALUMINUM-ACTIVATED MALATE TRANSPORTER 12 (ALMT12) anion channels mediate anion efflux in guard cells to promote stomatal closure. These channels were previously thought to function as two independent anion-permeable pores differing in their activation kinetics, voltage dependence, and anion selectivity. In this study, we found that ALMT12 interacts with and represses SLAC1 anion permeability in Xenopus oocytes and Arabidopsis (Arabidopsis thaliana) guard cells. This channel–channel regulatory mechanism modulates stomatal movements under high CO2 conditions and enhances plant biomass.

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来源期刊

Plant Physiology 生物-植物科学

CiteScore

12.20

自引率

5.40%

发文量

535

审稿时长

2.3 months

期刊介绍： Plant Physiology® is a distinguished and highly respected journal with a rich history dating back to its establishment in 1926. It stands as a leading international publication in the field of plant biology, covering a comprehensive range of topics from the molecular and structural aspects of plant life to systems biology and ecophysiology. Recognized as the most highly cited journal in plant sciences, Plant Physiology® is a testament to its commitment to excellence and the dissemination of groundbreaking research. As the official publication of the American Society of Plant Biologists, Plant Physiology® upholds rigorous peer-review standards, ensuring that the scientific community receives the highest quality research. The journal releases 12 issues annually, providing a steady stream of new findings and insights to its readership.