ArticleMicrobial biotechnology2026
Bacterial Volatile Organic Compounds Mediate a Cooperative Relationship Between Bacteria and Plants Under Heavy Metal Stress.
Article in Microbial biotechnology, 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
Bacterial volatile organic compounds (BVOCs) are increasingly recognised as effective signalling molecules that stimulate plant growth and stress responses. Although BVOC production may impose metabolic costs on bacteria, the benefits gained by VOC-emitting bacteria through BVOC-mediated communication with plants remain unclear. In this study, we established Pb-stressed conditions for Bacillus megaterium, Arabidopsis thaliana or both organisms to investigate their reciprocal interactions. Pb-stressed bacteria emitted a distinct VOC profile and exhibited significant reprogramming of sugar and nitrogen-containing carbon metabolism compared with unstressed bacteria. Plant growth inhibition caused by Pb was alleviated by VOCs emitted from unstressed bacteria; however, this alleviation was enhanced by 36% when the bacteria were exposed to Pb stress, indicating that Pb-induced changes in bacterial VOC metabolism trigger distinct plant responses. Specifically, Pb accumulation increased by up to 95% in plant shoot, whereas oxidative damage markers, including malondialdehyde and H
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