Induction of Disease Resistance in Cucumber by Acibenzolar-S-methyl and Expression of Resistance-related Genes.

DOI JASI Web Site 11 Citations 28 References

Bibliographic Information

Other Title
  • キュウリにおけるアシベンゾラルSメチルによる病害抵抗性の誘導と抵抗性関連遺伝子の発現

Search this article

Description

Systemic acquired resistance (SAR) is an inducible defense mechanism that plays a central role in plant disease resistance and can be induced by different compounds. In this study, acibenzolar-S-methyl (benzo [1, 2, 3] thiadiazole-7-carbothioic acid S-methyl ester) was shown to induce acquired resistance in cucumber. The signal(s), which induced resistance against scab (pathogen: Cladosporium cucumerinum), was systemically transferred as early as 4 to 6hr after treatment with acibenzolar-S-methyl. Expression of resistance-related genes, i.e., genes of acidic peroxidase, acidic class III chitinase and acidic β-1, 3-glucanase, was also induced by the treatment. Although systemic expression of peroxidase and chitinase genes was induced not only in the first leaves treated with acibenzolar-S-methyl but also in the untreated upper leaves, the induction of β-1, 3-glucanase gene was not systemically enhanced in cucumber plants within 24hr of the treatment. Since resistance against C. cucumerinum was already induced by 24hr after acibenzolar-S-methyl treatment, β-1, 3-glucanase might not participate in the protection against attack by the pathogen at an early stage in the SAR induced by this compound. Thus, acibenzolar-S-methyl seems to activate the SAR signal transduction pathway in cucumber plants. Subsequently, this compound rapidly induces the expression of SAR genes and disease resistance in the plants.

Journal

Citations (11)*help

See more

References(28)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top