International Journal For Multidisciplinary Research

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Characterization of Rhizobacteria from Agricultural and Forest Ecosystems for Plant Growth-Promoting Potential

Author(s) Ms. KRUTI VINODBHAI PATEL, Prof. Dr. KAILASH PATEL, Mr. MANHAR VALVI, Mr. MANOJ VALVI
Country India
Abstract Plant growth-promoting rhizobacteria (PGPR) enhance plant development through multiple direct and indirect mechanisms, while their diversity and functional potential are strongly governed by soil type and land-use patterns. In the present study, rhizospheric soils were collected from an agricultural field cultivated with Arachis hypogaea L. and a forest site dominated by Ficus benghalensis L. at Bhintkhurd, Surat. A total of 40 bacterial isolates were obtained and screened for key PGPR traits, including phosphate solubilization, ammonia production, indole-3-acetic acid production, hydrogen cyanide production, and siderophore production. Among these, 11 isolates originated from agricultural soil and 29 from forest soil. Forest-derived isolates exhibited comparatively higher diversity and functional expression across most PGPR traits. Identification using MALDI-TOF mass spectrometry revealed the presence of Bacillus subtilis, Bacillus cereus, Bacillus mojavensis, and Solibacillus silvestris. Notably, isolates A10 and F11 demonstrated multifunctionality by expressing four PGPR traits simultaneously. The findings indicate that forest soils serve as a richer reservoir of diverse and functionally competent rhizobacteria. Multifunctional isolates identified in this study hold significant potential for application as biofertilizers in sustainable agricultural systems.
Keywords PGPR, Rhizobacteria, Phosphate solubilization, Indole-3-acetic acid (IAA), Siderophore production, Biofertilizer, Forest soil, Agricultural soil, MALDI-TOF mass spectrometry, Sustainable agriculture.
Field Biology > Agriculture / Botany
Published In Volume 8, Issue 3, May-June 2026
Published On 2026-06-06
DOI https://doi.org/10.36948/ijfmr.2026.v08i03.80358
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CrossRef DOI prefix of IJFMR is 10.36948/ijfmr

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