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磷酯酰胆碱转位蛋白 OsPCTP 与抗坏血酸过氧化物酶 OsAPX8 相互作用，调控水稻对细菌性条斑病的抗性。

Phosphatidylcholine Transfer Protein OsPCTP Interacts with Ascorbate Peroxidase OsAPX8 to Regulate Bacterial Blight Resistance in Rice.

机构信息

Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.

Key Laboratory of Genetics and Breeding of High Quality Rice in Southern China (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Guangzhou 510640, China.

出版信息

Int J Mol Sci. 2024 Oct 26;25(21):11503. doi: 10.3390/ijms252111503.

DOI:10.3390/ijms252111503
PMID:39519057
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11546617/
Abstract

Rice phosphatidylcholine transfer protein (PCTP), which contains a steroidogenic acute regulatory protein-related lipid transfer (START) domain, responds to bacterial blight disease. Overexpression of quantitatively enhances resistance to pathogen in rice, whereas depletion of it has the opposite effect. Further analysis showed that OsPCTP physically interacts with OsAPX8, a ROS scavenging enzyme, and influences ascorbate peroxidase enzymatic activity in vivo. In addition, the expression of pathogenesis-related genes , and were significantly induced in plants compared with that in wild-type plants ZH11. Taken together, these results suggested that OsPCTP mediates bacterial blight resistance in rice through regulating the ROS defense pathway.

摘要

水稻磷酯酰转移蛋白（PCTP），含有甾醇调节蛋白相关脂转移（START）结构域，对细菌性条斑病有反应。过量表达可在水稻中定量增强对病原体的抗性，而耗尽它则有相反的效果。进一步的分析表明，OsPCTP 与 ROS 清除酶 OsAPX8 相互作用，并影响体内抗坏血酸过氧化物酶的酶活性。此外，与野生型 ZH11 相比， 基因的表达在 植株中显著诱导。综上所述，这些结果表明 OsPCTP 通过调节 ROS 防御途径介导水稻对细菌性条斑病的抗性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/304f/11546617/9d7f222c0d32/ijms-25-11503-g007.jpg
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本文引用的文献

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Positively Contributes to Rice Blast Resistance.对稻瘟病抗性有积极贡献。
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LF1 regulates the lateral organs polarity development in rice.LF1 调控水稻侧生器官的极性发育。
New Phytol. 2021 Aug;231(3):1265-1277. doi: 10.1111/nph.17220. Epub 2021 Feb 15.
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The Class III peroxidase gene OsPrx30, transcriptionally modulated by the AT-hook protein OsATH1, mediates rice bacterial blight-induced ROS accumulation.III 类过氧化物酶基因 OsPrx30 受 AT-hook 蛋白 OsATH1 的转录调控，介导水稻细菌性条斑病诱导的 ROS 积累。
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5
Identification of the novel bacterial blight resistance gene Xa46(t) by mapping and expression analysis of the rice mutant H120.利用水稻突变体 H120 的定位和表达分析鉴定新型细菌性条斑病抗性基因 Xa46(t)。
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