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Induktion einer lokalen und systemischen Resistenz gegen Colletotrichum coccodes in Paprikapflanzen mittels DL‐β‐Amino‐ n ‐Buttersäure
Author(s) -
Hong Jeum Kyn,
Hwang Byung Kook,
Kim Chung Hoe
Publication year - 1999
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.1999.147004193.x
Subject(s) - pepper , biology , butyric acid , horticulture , solanaceae , amino acid , botany , microbiology and biotechnology , food science , biochemistry , gene
dl ‐β‐amino‐ n ‐butyric acid (BABA) that was applied as a foliar spray or soil drench to pepper plants induced local and systemic resistance to a challenge infection with Colletotrichum coccodes . About 85 and 100% protections against the anthracnose were achieved by a relatively high concentration of BABA at 1000 μg/ml, which had no antifungal activity in vitro against C. coccodes . Protection was expressed as a reduction in the number and size of lesions. dl ‐α‐amino‐ n ‐butyric acid (AABA) was not so effective as BABA, whereas dl ‐γ‐amino‐ n ‐butyric acid (GABA) provided a little protection against anthracnose. At least 5 days were needed after BABA treatment as a soil drench in order to induce resistance in pepper plants. After BABA treatment as a soil drench, the plants remained protected over 15 days. Application of BABA to the lower leaves significantly protected the leaves above the treated leaves from C. coccodes infection, which suggested that systemic resistance to the anthracnose was induced in pepper plants by BABA. The leaves above the BABA‐treated lower leaves were strongly protected by reduction of the number and size of lesions.