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Die Samenbakterisierung mit Bacillus subtilis AF 1 erhöht die Phenylalaninammoniuinlyaseaktivität und reuziert das Auftreten der Fusarium‐Welke bei Straucherbsen
Author(s) -
Podile A. R.,
Laxmi V. D. V.
Publication year - 1998
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 - 10.1111/j.1439-0434.1998.tb04687.x
Subject(s) - bacillus subtilis , phenylalanine ammonia lyase , biology , biological pest control , bacterial wilt , peroxidase , fusarium wilt , phenylalanine , microbiology and biotechnology , horticulture , bacillales , botany , bacteria , enzyme , biochemistry , fusarium oxysporum , genetics , amino acid
Cell free culture filtrate of a biocontrol PGPR strain of Bacillus subtilis showed a concentration‐dependent growth and conidiation inhibition of Fusarium udum . the incitant of pigeonpea wilt. In vitro interaction of cell free filtrate of AF 1 induced bulb‐like structures in the hyphae of F. udum . Seed treatment with B. subtilis significantly reduced the incidence of pigeonpea wilt, but not with the cell free culture filtrate of AF 1. Seeds bacterized with B. subtilis AF 1 showed an increase in phenylalanine ammonia‐lyase (PAL) from day 1, while the peroxidase activity increased from day 6. The results are discussed in terms of induction of host plant resistance in biological control of plant pathogens.