Abstract
The leaves of pepper (Capsicum anuum L.) were inoculated with Phytophthora capsici Leonian 3 d after treatment with acibenzolar-S-methylbenzo [1,2,3]thiadiazole-7-carbothioic acid-S-methyl ester (ASM) and resistance to Phytophthora blight disease was investigated. Results showed that P. capsici was significantly inhibited by ASM treatment by up to 45 % in planta. The pepper plants responded to ASM treatments by rapid and transient induction of L-phenylalanine ammonia-lyase (PAL), increase in total phenol content and activities of chitinase and β-1,3-glucanase. No significant increases in enzyme activities were observed in water-treated control plants compared with the ASM-treated plants. Therefore it may be suggested that ASM induces defense-related enzymes, PAL activity, PR proteins and phenol accumulation in ASM-treated plants and contribute to enhance resistance against P. capsici.
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Abbreviations
- AMS:
-
acibenzolar-S-methylbenzo[1,2,3]thiadiazole-7-carbothioic acid-S-methyl ester, dai - days after inoculation
- IR:
-
induced resistance
- PAL:
-
L-phenylalanine ammonialyase
- PR:
-
pathogenesis-related
- SA:
-
salicylic acid
- SAR:
-
systemic aquired resistance
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Baysal, O., Turgut, C. & Mao, G. Acibenzolar-S-methyl induced resistance to Phytophthora capsici in pepper leaves. Biol Plant 49, 599–604 (2005). https://doi.org/10.1007/s10535-005-0055-0
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DOI: https://doi.org/10.1007/s10535-005-0055-0