期刊
PLANT SIGNALING & BEHAVIOR
卷 14, 期 3, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15592324.2019.1573097
关键词
Plasma membrane H+-ATPase; VAMP7C; high pH stress
资金
- National Genetically Modified Organisms Breeding Major Projects [2016ZX08009002]
- National Natural Science Foundation of China [31430012, U1706201, 31670260]
- Shandong Provincial National Science Foundation, China [ZR2017BC026]
The plasma membrane (PM) H+-ATPase plays an important role in response to environmental stress, such as salt-alkaline stress. We have reported that the N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) protein Vesicle-associated membrane protein 711 (VAMP711) is involved in drought stress by regulating PM H+-ATPase activity directly. In this study, we report that VAMP7C (VAMP711-14) represses PM H+-ATPase activity in response to high-pH stress. The Arabidopsis PM H+-ATPase AHA2 interacts with VAMP7C. The longin domain of VAMP711 interacts with AHA2 to inhibit PM H+-ATPase activity on the plasma membrane. The alkaline phenotype of vamp711 and vamp711 vamp712 vamp713 triple mutants suggested that VAMP7C was functionally redundant in regulating PM H+-ATPase activity in response to high-pH stress.
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