Sustainable Agriculture Through Purple Non-Sulfur Bacteria (PNSB): Enhancing Soil Health, Plant Growth, and Environmental Sustainability

Abdullah Ibrahim Al Sheikh Mubarak; Dema Abdullah Ahmed Alodaini

doi:10.25163/microbbioacts.21101694

Journal of Integrative Microbial Sciences | Online ISSN 2209-2161

REVIEWS (Open Access)

Previous Contents Vol 2 (1)

Sustainable Agriculture Through Purple Non-Sulfur Bacteria (PNSB): Enhancing Soil Health, Plant Growth, and Environmental Sustainability

Abdullah Ibrahim Al Sheikh Mubarak ¹*, Dema Abdullah Ahmed Alodaini ²

+ Author Affiliations

Microbial Bioactives 2 (1) 1-8 https://doi.org/10.25163/microbbioacts.21101694

Submitted: 08 January 2019 Revised: 14 April 2019 Published: 22 April 2019

Abstract

Photosynthetic bacteria, particularly purple non-sulfur bacteria (PNSB), have gained increasing attention in agricultural applications due to their multifunctional roles in soil fertility, plant growth promotion, and bioremediation. These bacteria utilize light energy for metabolic processes, fix atmospheric nitrogen, and decompose organic matter, improving soil health and crop yield. PNSB play a crucial role in sustainable agriculture by enhancing nutrient cycling, producing bioactive compounds, and mitigating environmental stressors such as heavy metal contamination and soil salinity. Studies have demonstrated that the application of PNSB in biofertilizers significantly improves plant growth, root development, and crop resilience to abiotic stress. Moreover, PNSB contribute to organic farming practices by reducing dependency on chemical fertilizers and pesticides, thus promoting eco-friendly agricultural systems. This review explores the taxonomy, physiology, and ecological significance of photosynthetic bacteria, particularly PNSB, and their diverse applications in modern agriculture. Furthermore, challenges in large-scale application and future research directions are discussed to provide a comprehensive understanding of their potential benefits and limitations.

Keywords: Photosynthetic bacteria, Purple Non-Sulfur Bacteria, Sustainable agriculture, Biofertilizers, Bioremediation, Plant growth promotion

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