Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
Volume 83 , Issue 4
Remark on 100th of JJP Series 4
Showing 1-2 articles out of 2 articles from the selected issue
Original
  • M. SAITO, Y. YAMAMOTO, M. NAKAJIMA, K. AKUTSU
    2017 Volume 83 Issue 4 Pages 251-256
    Published: 2017
    Released: December 05, 2017
    JOURNALS FREE ACCESS

    In a test of L-methionine to suppress tomato powdery mildew caused by Oidium neolycopersici, tomato leaves were sprayed with 100 μg/mL L-methionine solution 2 days before O. neolycopersici conidia were brushed onto leaves. Disease severity was scored at 7 days post-inoculation (dpi). Compared with the severity on untreated controls, severity on L-methionine-treated tomato plants was reduced. Light microscopic observation showed fewer conidiophores, and haustoria developed on L-methionine-treated plant leaves than on control leaves. When relative expression of PR genes was analyzed by RT-PCR in tomato leaves at 2 dpi, expression was higher in L-methionine-treated plants than in the controls. These results suggest that L-methionine treatment of tomato plants induced resistance against O. neolycopersici and decreased the severity of powdery mildew.

    Download PDF (666K)
Feature article for 100th anniversary of Japanese Journal of Phytopathology
feedback
Top