Isolation and characterization of plant-growth-promoting rhizobacteria from the rhizospheric soil of selected pulses and their effect on Allium fistulosum L. and Capsicum frutescens L.
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Abstract
Plant-growth-promoting bacteria (PGPB) have various direct and indirect mechanisms of action. In this study, six optimal plant-growth-promoting rhizosphere bacteria (L9-05, L45-05, L10-04, L2-03, L2-04, and L41-01) were isolated from the root zone of healthy, vigorously growing plants from a farm in Uttaradit province, Thailand. All the selected bacterial isolates promoted the growth of Allium fistulosum L. and Capsicum frutescens L. Moreover, all the isolates were selected based on their ability for nitrogen fixation, indole-3-acetic acid (IAA) production, and phosphate solubilization. Based on the morphological traits and 16S rRNA sequence analysis, we found that bacterial isolate L10-04a strain of Enterobacter hormaechei promoted the growth and increased the yields of Capsicum frutescens L. Thus, this strain is suitable for application in organic farming.
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References
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