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Evaluation of Bacterial Spot Disease of Capsicum annuum L. in Drought Stress Environment by High Temperature

온도변화에 따른 건조 스트레스 환경에서 고추 세균점무늬병 발생 영향

Jang, Jong-Ok;Kim, Byung-Hyuk;Lee, Jung-Bok;Joa, Jae-Ho;Koh, Sangwook
장종옥;김병혁;이중복;좌재호;고상욱

  • Received : 2018.10.01
  • Accepted : 2019.06.11
  • Published : 2019.06.30

Abstract

The global warming by increased $CO_2$ will effect of plant pathogenic microorganisms and resistance of host plants, and it is expected to affect host-pathogen interactions. This study used Capsicum annuum L. and Xanthomonas euvesicatoria, a pathogenic bacteria of pepper, to investigate interactions between hosts and pathogens in a complex environment with increasedcultivation temperature and drought stress. As a result, the bacterial spot disease of C. annuum L. caused by X. euvesicatoria was $35^{\circ}C$ higher than $25^{\circ}C$. In addition, the effect on water potential on bacterial spot disease was much greater water potential -150 kPa than -30 kPa. The disease progress and severity higher than water potential -30 kPa. This result will useful for understanding interaction with red pepper and X. euvesicatoria under the complex environment with increased cultivation temperature and in water potential -150 kPa drought stress in the future.

Keywords

Bacterial spot disease;$CO_2$;pathogenic bacteria;red pepper;Xanthomonas euvesicatoria

Acknowledgement

Grant : Impact assessment on disease incidence of bacterial spot of pepper according to increase of temperature and CO2 concentration

Supported by : National Institute of Horticultural and Herbal Science