4.7 Article

L-Histidine Induces Resistance in Plants to the Bacterial Pathogen Ralstonia solanacearum Partially Through the Activation of Ethylene Signaling

期刊

PLANT AND CELL PHYSIOLOGY
卷 57, 期 9, 页码 1932-1942

出版社

OXFORD UNIV PRESS
DOI: 10.1093/pcp/pcw114

关键词

Disease resistance; Ethylene; L-Histidine; Plant activator; Ralstonia solanacearum

资金

  1. Japanese Program for the Promotion of Basic and Applied Research for Innovation in Bio-oriented Industry (BRAIN)
  2. Council for Science, Technology and Innovation (CSTI)
  3. Cross-ministerial Strategic Innovation Promotion Program (SIP)
  4. Bio-oriented Technology Research Advancement Institution, NARO ['Technologies for creating next-generation agriculture, forestry and fisheries']
  5. Grants-in-Aid for Scientific Research [26292022] Funding Source: KAKEN

向作者/读者索取更多资源

Wilt disease in plants, which is caused by the soil-borne bacterial pathogen Ralstonia solanacearum, is one of the most devastating plant diseases. We previously detected bacterial wilt disease-inhibiting activity in an extract from yeast cells. In the present study, we purified this activity and identified one of the substances responsible for the activity as the amino acid histidine. The exogenous application of L-histidine, but not D-histidine, inhibited wilt disease in tomato and Arabidopsis plants without exhibiting any anti-bacterial activity. L-Histidine induced the expression of genes related to ethylene (ET) biosynthesis and signaling as well as the production of ET in tomato and Arabidopsis plants. L-Histidine-induced resistance to R. solanacearum was partially abolished in ein3-1, an ET-insensitive Arabidopsis mutant line. Resistance to the fungal pathogen Botrytis cinerea, which is known to require ET biosynthesis or signaling, was also induced by exogenously applied L-histidine. These results suggest that L-histidine induces resistance to R. solanacearum and B. cinerea partially through the activation of ET signaling in plants.

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