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2,3-butanediol Induces Systemic Acquired Resistance in the Plant Immune Response
KyYoungPark,Yu Jung Kim,So Yeon Seo,Beak-Rock Oh,Jeong-Woo Seo 한국식물학회 2018 Journal of Plant Biology Vol.61 No.6
Plants harbor a wide diversity of microorganisms,which are involved in major plant functions such as nutritionand resistance to biotic and abiotic stresses. Recently, theimportance of the rhizosphere microbiome for plant growthhas been widely recognized. Therefore, we researched theeffects of 2,3-butanediol (2,3-BD) in order to obtain insights intosystemic acquired resistance (SAR) mediated through reactiveoxygen species (ROS) homeostasis and pathogenesis-related(PR) gene expression. Syringe infiltration with Paenibacilluspolymyxa DSM 365 surprisingly mitigated cell damage, whichwas induced by the compatible plant pathogen Phytophtoraparasitica var. nicotianae (Ppn). Furthermore, syringe infiltrationwith 2,3-BD produced from P. polymyxa effectively enhancedSAR to compatible Ppn through down-regulation of ROSbiosynthetic genes (NtRbohD and NtRbohF) and up-regulationof ROS detoxification and PR protein expression. In addition,synergy between 2,3-BD and nonexpressor pathogenesis-relatedprotein 1 (NPR1) enhanced resistance to pathogen infection. Taken together, our study demonstrates the potential applicabilityof leaf and root-associated microbiomes as biopestcides toincrease efficiency and yield in agricultural systems.