The Actin-Related Protein2/3 Complex Regulates Mitochondrial-Associated Calcium Signaling during Salt Stress in Arabidopsis
作者： Y. Zhao , Z. Pan , Y. Zhang , X. Qu , Y. Zhang
关键词: Arabidopsis 、 Cell biology 、 Calcium signaling 、 Mitochondrial permeability transition pore 、 Biochemistry 、 Actin 、 Biology 、 Cytosol 、 Mutant 、 Microfilament 、 Mitochondrion
摘要: Microfilament and Ca2+ dynamics play important roles in stress signaling in plants. Through genetic screening of Arabidopsis thaliana mutants that are defective in stress-induced increases in cytosolic Ca2+ ([Ca2+] cyt), we identified Actin-Related Protein2 (Arp2) as a regulator of [Ca2+] cyt in response to salt stress. Plants lacking Arp2 or other proteins in the Arp2/3 complex exhibited enhanced salt-induced increases in [Ca2+] cyt, decreased mitochondria movement, and hypersensitivity to salt. In addition, mitochondria aggregated …
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