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Enhanced Defence Responses of Chickpea Plants Against Rhizoctonia solani by Pre‐Inoculation with Rhizobia
Author(s) -
Hemissi Imen,
Mabrouk Yassine,
Mejri Sonia,
Saidi Mouldi,
Sifi Bouaziz
Publication year - 2013
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/jph.12071
Subject(s) - rhizobia , biology , rhizoctonia solani , inoculation , phenylalanine ammonia lyase , pathogen , microbiology and biotechnology , point of delivery , peroxidase , horticulture , botany , enzyme , symbiosis , bacteria , biochemistry , genetics
The aim of this work was to study the antagonist effect of two R hizobium strains P ch A zm and P ch S. N sir2 to R hizoctonia solani and for an evaluation of the relative impact of rhizobia on the expression of the plant's defence response against R hizoctonia. First, these strains reduced fungal growth observed in vitro using the same or separately Petri dishes. Moreover, these isolates led to reduced chickpea infection by R . solani , resulting from the direct effect of rhizobia on pathogens and possible induced resistance in chickpea. Concomitantly, reduction in infection was accompanied by enhanced level of defence‐related enzymes, phenylalanine ammonia lyase ( PAL ) and peroxidase ( POX ). An increased level of phenol content was recorded in the roots of bacterized plants grown in the presence of pathogen. The results promise the use of rhizobia for protection of chickpea against R . solani .