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Jin-ming Zhao;Han Xing,Yang Zhou; Jian-li Huang; Xiao-li Zhang; Long-ming Zhu; Xin-fang Wang 한국식물학회 2018 Journal of Plant Biology Vol.61 No.5
Chalcone isomerase (CHI) is a key enzyme ofthe flavonoid pathway that plays crucial roles in plant responsesto various pathogens. Our previous study using comparativetranscriptome analysis of soybean inoculated with or withoutPhytophthora sojae revealed Glyma.20G241500, a homologof CHI1A in Arabidopsis thaliana, to be induced by P.sojaein soybean. In the present study, we isolated the gene fromsoybean cultivar Nannong 10-1, designating it GmCHI1A. GmCHI1A transcripts were detected in soybean roots, stemsand leaves, with the highest levels in roots. Interestingly,GmCHI1A localizes to the cortical endoplasmic reticulum(ER). GmCHI1A was overexpressed in hairy roots to furtheruncover the roles of CHIs in soybean. Compared to emptyvector-expressing hairy roots (EV) infected with P. sojae,hairy roots overexpressing GmCHI1A (OE) exhibited decreasedP. sojae biomass accumulation, shortened the lesion lengthsand reduced zoospores germination. These results demonstratethat GmCHI1A plays positive roles in the response ofsoybean to P. sojae.