Background and aim: Chickpea (Cicer arietinum L.) is an important crop worldwide. Fungi of the genus Fusarium are among the most aggressive pathogens of chickpea, causing plant wilt and/or root rot. The incidence of soilborne pathogens can be reduced by increasing the microbial diversity in the rhizosphere. To improve soil suppressiveness against Fusarium spp., we optimized a microbial consortium consisting in a mixture of bacterial isolates selected from the naturally occurring microflora in the chickpea rhizosphere. Methods: Beneficial rhizobacteria were selected based on i) their mutual compatibility when grown in mixture, ii) antagonistic activity against F. oxysporum f. sp. ciceris race 0 and F. solani f. sp. pisi and iii) growth promoting capacity on chickpea. Results: The best results were obtained by using a consortium consisting of a mixture of four bacterial isolates: Serratia marcescens isolate 59, Pseudomonas fluorescens isolate 57, Rahnella aquatilis isolate 36 and Bacillus amyloliquefaciens isolate 63. Conclusions: This microbial consortium efficiently controlled both Fusarium pathogens, with a consistently higher efficacy compared to those of bacteria applied individually. The putative mechanisms involved in the interaction between antagonists, plant and Fusarium are discussed.
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s11104-016-3080-1|
|Codice identificativo ISI:||WOS:000399020200031|
|Codice identificativo Scopus:||2-s2.0-84991052069|
|Titolo:||A microbial consortium in the rhizosphere as a new biocontrol approach against fusarium decline of chickpea|
|Appare nelle tipologie:||1.1 Articolo in rivista|