Enhanced Defence Responses of Chickpea Plants Against Rhizoctonia solani by Pre-Inoculation with Rhizobia

The aim of this work was to study the antagonist effect of two Rhizobium strains Pch Azm and Pch S.Nsir2 to Rhizoctonia solani and for an evaluation of the relative impact of rhizobia on the expression of the plant's defence response against Rhizoctonia. First, these strains reduced fungal grow...

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Bibliographic Details
Published in:Journal of phytopathology 2013-06, Vol.161 (6), p.412-418
Main Authors: Hemissi, Imen, Mabrouk, Yassine, Mejri, Sonia, Saidi, Mouldi, Sifi, Bouaziz
Format: Article
Language:English
Subjects:
Bacteria
biological control
chickpea
Cicer arietinum
peroxidase
phenolic compounds
phenylalanine ammonia lyase
Rhizobium
Rhizoctonia
Rhizoctonia solani
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Summary:The aim of this work was to study the antagonist effect of two Rhizobium strains Pch Azm and Pch S.Nsir2 to Rhizoctonia solani and for an evaluation of the relative impact of rhizobia on the expression of the plant's defence response against Rhizoctonia. 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.
ISSN:0931-1785
1439-0434
DOI:10.1111/jph.12071