Characterization of MPK family members in the genus Citrus (Rutaceae) and analysis of the function of AbMPK13 in the response to citrus canker in Atalantia buxifolia
文献类型： 外文期刊
作者： Chen, Lijuan 1 ; Bin, Minliang 1 ; Lin, Jue 1 ; Shen, Wenzhong 1 ; Zhang, Xinxin 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Guangdong Prov Key Lab Sci & Technol Res Fruit Tre, Key Lab South Subtrop Fruit Biol & Genet Resource, Inst Fruit Tree Res,Minist Agr & Rural Affairs, Guangzhou 510640, Peoples R China
2.South China Agr Univ, Coll Life Sci, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangzhou 510642, Peoples R China
关键词： Citrus; Atalantia buxifolia; MPK; Citrus canker; Resistance
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）
ISSN： 0981-9428
年卷期： 2025 年 219 卷
页码：
收录情况： SCI
摘要： Citrus bacterial canker has deleterious effects on global citrus production. The mitogen-activated protein kinase (MAPK) signaling cascade regulates plant defense against pathogen infection. Here, we identified 11 MAPKs in Atalantia buxifolia, a wild citrus species with high stress tolerance. Phylogenetic and gene structure analysis of the identified MAP kinases ( MPKs ) was conducted, and conserved motifs were identified. MPK expression was altered in Xanthomonas citri subsp. citri (Xcc)-resistant Atalantia buxifolia and Xcc-sensitive sweet orange after Xcc infection. AbMPK13 expression was significantly up-regulated after Xcc infection. AbMPK13 was localized to the cytoplasm, and its overexpression enhanced the resistance of sweet orange to Xcc and activated the salicylic acid (SA) signaling pathway. These findings clarify the role of MPKs in the citrus canker resistance of A . buxifolia.
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