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A Role of Cytokinin Transporter in Arabidopsis Immunity

文献类型： 外文期刊

作者： Wang, Shuai 1 ; Wang, Shu 1 ; Sun, Qi 3 ; Yang, Leiyun 1 ; Zhu, Ying 1 ; Yuan, Yaping 2 ; Hua, Jian 1 ;

作者机构： 1.Cornell Univ, Sch Integrat Plant Sci, Plant Biol Sect, Ithaca, NY 14853 USA

2.Jilin Univ, Coll Plant Sci, Jilin 130062, Peoples R China

3.Cornell Univ, Computat Biol Serv Unit, Ithaca, NY 14853 USA

4.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, Hangzhou 310021, Zhejiang, Peoples R China

5.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Bioinformat Ctr, Nanjing 210095, Jiangsu, Peoples R China

期刊名称：MOLECULAR PLANT-MICROBE INTERACTIONS （ 影响因子：4.171； 五年影响因子：4.836 ）

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收录情况： SCI

摘要： The phytohormone cytokinin (CK) is not only essential for plant growth and development but also impacts plant immunity. A mutant screen in a constitutively active plant immune receptor mutant snc1 (suppressor of npr1, constitutive1) identified a suppressor mutation of SNC1-induced defense responses in an ABC transporter coding gene ABCG14. ABCG14 transports CK from roots to the shoots, and the suppression of the SNC1-mediated defense response by the loss of ABCG14 is due to a deficiency of trans-zeatin (tZ)-type CK in the shoot. In addition, exogenous application of the tZ-type CK enhances disease resistance associated with increased expression of the plant immune receptor gene SNC1. Taken together, this study further established the role of tZ-type CK in disease resistance and suggests a new intersection of CKs with plant immunity at the expression regulation of a plant immune receptor gene.

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