CO2 농도 상승 효과에 의한 고추 세균점무늬병 발병 양상 분석 = Analysis of Bacterial Spot Disease in Red Pepper Caused by Increase of CO2 Concentration

다국어 초록 (Multilingual Abstract)

An increase in CO2 will affect plant pathogenic microorganisms, the resistance of host plants, and hostpathogen interactions. This study used Capsicum annuum and Xanthomonas euvesicatoria, a pathogenic bacterium of pepper, to investigate the interactions between hosts and pathogens in conditions of increased CO2 concentrations. Our analysis of disease resistance genes under 800 ppm CO2 using quantitative RT-PCR showed that the expression of CaLRR1, CaPIK1, and PR10 decreased, but that of negative regulator WRKY1 increased. Additionally, the disease progress and severity was higher at 800 ppm than 400 ppm CO2. These results will aid in understanding the interaction between red pepper and X. euvesicatoria under increased CO2 concentrations in the future.

국문 초록 (Abstract)

CO2의 상승은 식물 병원성 미생물의 발병력과 기주 식물의 저항성에 영향을 미칠 것이며, 기주와 병원체의 상호 작용에도 영향을 미칠 것으로 예상된다. 본 연구는 CO2 상승환경에서 기주와 병원체간의 상호 작용을 연구하기 위하여고추(Capsicum annuum)와 세균점무늬병을 유발하는 X.
euvesicatoria를 이용하였다. 고추 식물체의 병저항성 관련유전자인 CaLRR1, CaWRKY1, CaPIK1 그리고 CaPR10 유전자를 quantitative RT-PCR로 분석한 결과 800 ppm에서 CaLRR1, CaPIK1 그리고 PR10 유전자의 발현이 감소하였으며, negative regulator인 CaWRKY1 유전자는 발현이증가하였다. 400 ppm과 800 ppm의 CO2 농도에서 이병엽률과 발병도를 확인 한 결과 800 ppm에서 발병도가 증가된 것을 확인하였다. 이들 결과는 미래의 CO2 농도가 증가 된 환경에서 고추와 고추의 주요 피해 병원균인 X. euvesicatoria 에 의한 고추 세균점무늬병의 발병 양상을 이해하는 기초 자료로 활용할 수 있을 것이다.

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