Vegetos
(An International Journal of Plant Research & Biotechnology)
(eISSN: 2229-4473)
Marine origin Bacillus subtilis 10MH17 as an effective bio-inoculant for improving growth of Vigna unguiculata plant
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Research Articles | Published: 22 April, 2026
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Keywords: Marine microbe, Plant growth promoters, Cowpeas, Pot trials
Abstract
The rising global food demand has increased the need for sustainable strategies that enhance agricultural productivity. Among these, plant growth promoting bacteria (PGPB) are gaining importance for their ability to improve plant development, soil fertility, and crop resilience. While extensive research has focused on soil based PGPB, marine microorganisms remain comparatively underexplored. This study evaluates a marine derived Bacillus subtilis strain, 10MH17, for its plant growth promoting potential. The isolate demonstrated multiple beneficial traits, including ammonia production, phosphate and potassium solubilization, and effective root colonization in cowpea. A talc-based bioformulation of B. subtilis 10MH17 was prepared and tested through pot experiments under two conditions: control (T1) and treatment (T2). Plants treated with B. subtilis 10MH17 showed a 14.17% increase in biomass and a 16.2% increase in height over the control. Additionally, the treatment improved chlorophyll content, enhanced stress related biochemical responses, and elevated soil nitrogen, potassium, and phosphorus levels. Overall, the findings highlight marine B. subtilis 10MH17 as a promising PGPB for improving cowpea growth and soil health, supporting its potential role in sustainable agriculture.
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Author Information
Department of Biological Sciences, P.D. Patel Institute of Applied Sciences, CHARUSAT University, Changa, Anand, India