ArticleBMC plant biology2026
Harnessing phyllosphere and rhizobium bacteria for salt stress alleviation in common bean (Phaseolus vulgaris).
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSalinity is a major constraint to common bean (Phaseolus vulgaris) productivity, yet sustainable mitigation strategies remain limited. Here, we evaluated the interactive effects of salinity stress (0–8 dS m− 1), and plant growth-promoting bacteria inoculations, including Phyllosphere strains (P1 and P2), and Rhizobium (RB), and their combinations (P1 + RB, P2 + RB) on two common bean cultivars (Almas and Pak).
resultsSalinity significantly reduced plant height, chlorophyll pigments (Chl a and Chl b), chlorophyll fluorescence (Fv/Fm) and biomass, while elevating oxidative stress markers [malondialdehyde (MDA), hydrogen peroxide (H2O2)] and antioxidant enzyme activity (SOD, CAT). Bacterial treatments, particularly P1 + RB treatment alleviated salinity-induced damage by reducing oxidative stress (up to 68.4%), enhancing ion homeostasis (lower Na⁺, higher K⁺ and Ca²⁺), and maintaining photosynthetic efficiency (Fv/Fm). Almas exhibited greater tolerance than Pak, with lower MDA levels (21.7–25% reduction) and higher phenolic accumulation under stress.
conclusionsTogether, these findings highlight the synergistic role of bacterial inoculants and cultivar selection in enhancing salinity tolerance, offering a promising strategy for improving legume resilience and productivity in saline agroecosystems.
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