Pathogen-inducible CaUGT1 is involved in resistance response against TMV infection by controlling salicylic acid accumulation |
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| Authors: | Boo-Ja Lee Sung-Kyu Kim Soo Bok Choi Ki-Jeong Kim Kyung-Hee Paek |
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| Institution: | a School of Life Sciences and Biotechnology, Korea University, 1, 5-ga, Anam-dong, Sungbuk-gu, Seoul 136-701, Republic of Korea
b Systems Microbiology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Oun-dong 52, Yusong, Daejeon 305-806, Republic of Korea |
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| Abstract: | Capsicum annuum L. Bugang exhibits a hypersensitive response against Tobacco mosaic virus (TMV) P0 infection. The C. annuumUDP-glucosyltransferase 1 (CaUGT1) gene was upregulated during resistance response to TMV and by salicylic acid, ethephon, methyl viologen, and sodium nitroprusside treatment. When the gene was downregulated by virus-induced gene silencing, a delayed HR was observed. In addition, free and total SA concentrations in the CaUGT1-downregulated hot pepper were decreased by 52% and 48% compared to that of the control plants, respectively. This suggested that the CaUGT1 gene was involved in resistance response against TMV infection by controlling the accumulation of SA. |
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| Keywords: | Salicylic acid Hot pepper UDP-glucosyltransferase Tobacco mosaic virus |
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