Abstract
Plant somatic embryogenesis receptor-like kinases (SERK), members of leucine-rich repeat receptor-like kinases (LRR-RLKs) subfamily, are widely involved in plant growth, development and innate immunity. In this study, the setaria italica somatic embryogenesis receptor-like kinase1 gene (SiSERK1) was cloned by gateway technology, and transferred into a brasssinosteroid (BR) receptor mutant of Arabidopsis thaliana WS2 (bri1-5). After BL treatment, the transgenic plants could partially restore the phenotype of bri1-5. After Pst DC3000 treatment, the CFU value of SiSERK1 overexpression plant pathogen was between WS2 and bri1-5. Stomatal opening and plant height were also between them. Therefore, it is speculated that SiSERK1 gene is involved in BR signaling pathway and can improve the resistance of bri1-5 to Pst DC3000 through SA and NHP mediated systemic acquired resistance (SAR).
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