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Lignin metabolism involves Botrytis cinerea BcGsl-induced defense response in tomato

Lignin metabolism involves Botrytis cinerea BcGsl-induced de...

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中国植物病理学会第十一届全国会员代表大会暨2018年学术年会

作者： Yang Chenyu Liang Yingbo Qiu Dewen Zeng Hongmei Yuan Jingjing Yang Xiufen Key Laboratory of Control of Biological Hazard Factors(Plant Origin) for Agri-product Quality and Safety Ministry of AgricultureInstitute of Plant Protection

BcGs1,a cell wall degration enzyme(CWDE) is originally derived from Botrytis *** previous study revealed BcGs1 could trigger defense response and protect plants against various *** this study,two domans of Glyco-hydro 15(GH15) and CBM20lucoamylase(CBM20) of BcGs1 were transiently expressed in Nicotiana benthamiana and the results revealed that the two domains were required for BcGs1 full necrosis *** best understand the defense response mechanism underlying this BcGs1 elicitation in tomato,the differential protein expression profiles between BcGs1 and TrisHCl buffer treatment plants was performed using the iTRAQ-based quantitative proteome *** 71 up-regulated with ratio >1.3 and 38 down-regulated proteins with ratio proteins,major was focus on pathogenesis-related protein,peroxidases,Glucan endo-1,3-β-glucosidase,chitinase,biosynthesis of secondary *** real-time PCR(qPCR) was performed to investigate gene transcriptional profile post BcGs1 *** genes encoding above differential proteins were expressed with 5-20 folds *** to the up-regulated proteins and genes,oxidative metabolism and phenylpropanoid metabolism were speculated to be involved in BcGsl-triggered defense response in ***,the experimental evidence showed BcGsl triggered ROS burst,increased level of phenylalanine-ammonia lyase(PAL) and peroxidase(POD)enzyme activity and lignin ***,histochemical analysis revealed that BcGsl infiltration tomato leaves exhibited cell wall thickness compared with untreated ***,BcGs1 activated basal defense response and lignin metabolism contributed to BcGs1-induced resistance to *** infection in tomato.

关键词： fungal protein elicitor Defense response Phenylpropanoid Lignin Botrytis cinerea

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