Enhanced Defence Responses of Chickpea Plants Against Rhizoctonia solani by Pre‐Inoculation with Rhizobia |
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Authors: | Imen Hemissi Yassine Mabrouk Sonia Mejri Mouldi Saidi Bouaziz Sifi |
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Affiliation: | 1. Institut National de Recherche Agronomique de Tunisie (INRAT), , 2049 Ariana, Tunisia;2. Unité d'Utilisation Médicale et Agricole des Techniques Nucléaires, Centre National des Sciences et Technologies Nucléaires, , 2020 Ariana, Tunisia;3. Institut National d'Agronomie de Tunis (INAT), , 1082 Tunis, Mahrajène, Tunisia |
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Abstract: | 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. |
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Keywords: | chickpea
Rhizoctonia solani
biological control peroxidase phenylalanine ammonia lyase phenolic compounds |
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