Effect of L-methionine for suppressing Fusarium wilt of mizuna (<i>Brassica rapa</i> L. japonica group)

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  • L-メチオニンによるミズナ萎凋病の抑制効果
  • L-メチオニン ニ ヨル ミズナイチョウビョウ ノ ヨクセイ コウカ

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Abstract

<p>Aboveground parts of mizuna plants were sprayed with 100 μg/ml L-methionine solution 3 or 10 days before inoculation. These plants were replanted in soil including Fusarium oxysporum f. sp. conglutinans (FOC). Disease severity scored at 14 days post-inoculation (dpi) was lower on L-methionine-treated plants than on untreated plants. No effect of L-methionine on mycelial growth of FOC was visible microscopically. Quantitative RT-PCR analyses of marker genes for plant defense responses (BrPR1, BrBGL2, BrLOX2, BrVSP2) in root tissues at 2 dpi showed that expression of these genes was higher in treated plants than in control plants.</p>

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