alexa Isolation, selection, and characterization of beneficial rhizobacteria from pea, lentil, and chickpea grown in western Canada.
Agri and Aquaculture

Agri and Aquaculture

Journal of Fertilizers & Pesticides

Author(s): Hynes RK, Leung GC, Hirkala DL, Nelson LM

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Abstract The use of beneficial soil microorganisms as agricultural inputs for improved crop production requires selection of rhizosphere-competent microorganisms with plant growth-promoting attributes. A collection of 563 bacteria originating from the roots of pea, lentil, and chickpea grown in Saskatchewan was screened for several plant growth-promoting traits, for suppression of legume fungal pathogens, and for plant growth promotion. Siderophore production was detected in 427 isolates (76\%), amino-cyclopropane-1-carboxylic acid (ACC) deaminase activity in 29 isolates (5\%), and indole production in 38 isolates (7\%). Twenty-six isolates (5\%) suppressed the growth of Pythium sp. strain p88-p3, 40 isolates (7\%) suppressed the growth of Fusarium avenaceum, and 53 isolates (9\%) suppressed the growth of Rhizoctonia solani CKP7. Seventeen isolates (3\%) promoted canola root elongation in a growth pouch assay, and of these, 4 isolates promoted the growth of lentil and one isolate promoted the growth of pea. Fatty acid profile analysis and 16S rRNA sequencing of smaller subsets of the isolates that were positive for the plant growth-promotion traits tested showed that 39\%-42\% were members of the Pseudomonadaceae and 36\%-42\% of the Enterobacteriaceae families. Several of these isolates may have potential for development as biofertilizers or biopesticides for western Canadian legume crops. This article was published in Can J Microbiol and referenced in Journal of Fertilizers & Pesticides

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