Loose Plant Architecture 1-Interacting Kinesin-like Protein KLP Promotes Rice Resistance to Sheath Blight Disease
文献类型: 外文期刊
作者: Chu, Jin 1 ; Xu, Han 1 ; Dong, Hai 1 ; Xuan, Yuan Hu 2 ;
作者机构: 1.Liaoning Acad Agr Sci, Inst Plant Protect, Shenyang 110161, Peoples R China
2.Shenyang Agr Univ, Coll Plant Protect, Shenyang 110866, Peoples R China
关键词: KLP; Sheath blight disease; Transcription activation; Defense; Rice
期刊名称:RICE ( 影响因子:4.783; 五年影响因子:5.23 )
ISSN: 1939-8425
年卷期: 2021 年 14 卷 1 期
页码:
收录情况: SCI
摘要: Background Sheath blight disease (ShB) is a destructive disease affecting rice production. Previously, we have reported that Loose Plant Architecture 1 (LPA1) promotes resistance to ShB. However, the mechanisms by which LPA1 confers resistance against this disease have not been extensively investigated. Notably, interactors that regulate LPA-1 activity remain elusive. Findings In this study, we identified the interaction of kinesin-like protein (KLP) with LPA1 in the nucleus of rice cells by yeast two-hybrid, bimolecular fluorescent complimentary (BiFC), and co-immunoprecipitation (co-IP) assays. To investigate the role of KLP in promoting resistance to ShB, wild-type, klp mutant, and KLP overexpressor (KLP OX) rice plants were inoculated with Rhizoctonia solani AG1-IA. The results indicated that, compared with the wild-type control, klp mutants were more susceptible while KLP OX plants were less susceptible to ShB. Since LPA1 transcriptionally activates PIN-FORMED 1a (PIN1a), we examined the expression of 8 related PIN genes. The results showed that only the expression of PIN1a and PIN3b coincided with KLP expression levels. In addition, a chromatin immunoprecipitation (ChIP) assay showed that KLP bound directly to the promoter region of PIN1a but not of PIN3b. Transient expression assays confirmed that LPA1 and KLP transcriptionally activate PIN1a, and that coexpression of KLP and LPA1 had an additive effect on the activation of PIN1a, suggesting that KLP enhances LPA1 transcriptional activation activity. Conclusions Taken together, our results show that KLP is a novel LPA1 interactor that promotes resistance of rice to ShB.
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