Environmental control in tea fields to reduce infection by Pseudomonas syringae pv. theae.

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
Read More Add to Saved list
  • Additional Information
    • Source:
      Publisher: American Phytopathological Society] Country of Publication: United States NLM ID: 9427222 Publication Model: Print Cited Medium: Print ISSN: 0031-949X (Print) Linking ISSN: 0031949X NLM ISO Abbreviation: Phytopathology Subsets: MEDLINE
    • Publication Information:
      Original Publication: [St. Paul, Minn., etc., American Phytopathological Society]
    • Subject Terms:
      Agriculture* ; Environment*; Camellia sinensis/*microbiology ; Plant Diseases/*microbiology ; Pseudomonas syringae/*classification; Anti-Bacterial Agents/therapeutic use ; Pest Control, Biological ; Plant Leaves/microbiology ; Pseudomonas syringae/drug effects ; Seasons ; Temperature ; Time Factors
    • Abstract:
      Bacterial shoot blight (BSB) disease, caused by Pseudomonas syringae pv. theae, is a major bacterial disease of tea plants in Japan. BSB mainly occurs in the low-temperature season, and lesion formation by P. syringae pv. theae is enhanced by both low temperature and the presence of ice nucleation-active Xanthomonas campestris (INAX), which catalyzes ice formation at -2 to -4 degrees C and is frequently co-isolated with P. syringae pv. theae from tea plants. Low temperature is thus the most important environmental factor influencing the incidence of BSB; however, the effects of low temperature on infection of the host by P. syringae pv. theae and of environmental controls in fields on the occurrence of the disease are poorly understood. In this study, we show that ice formation on tea leaves by INAX enhanced P. syringae pv. theae invasion into leaf tissue. The natural incidence of BSB in the field was closely related to early autumn frost. Frost protection in late autumn, which prevented ice formation on tea plants, significantly decreased the incidence of BSB, and frost protection combined with bactericide application held the incidence under the economic threshold level. Our data indicate that environmental control in the field based on microbial interactions in the host offers a new strategy for plant disease control.
    • Accession Number:
      0 (Anti-Bacterial Agents)
    • Publication Date:
      Date Created: 20090123 Date Completed: 20090414 Latest Revision: 20090122
    • Publication Date:
      20221213
    • Accession Number:
      10.1094/PHYTO-99-2-0209
    • Accession Number:
      19159313