Ecological and functional roles of plant microbiomes in environmental detoxification

Abstract

Plant-associated microbiomes play a crucial role in environmental detoxification by influencing the degradation, immobilization, and resistance to toxins in polluted settings. The ecological and functional activity of endogenous microbial communities, such as rhizobacteria and endophytic microorganisms, is not well studied when examining contaminants and their environments, despite the fact that plant-mediated bioremediation has garnered a lot of research attention. The majority of previously published research focuses on a single biodegradation route or solitary plant-microbe interactions. Our knowledge of how the microbiome’s composition, functional diversity, and ecological stability of microbial communities work together to produce detoxifying results in practical applications is currently lacking. To advance understanding of how plant microbiomes cooperatively mediate environmental detoxification through metabolic interactions, adaptive responses, and host–microbiome communication, this review integrates insights from microbial ecology and functional microbiology. Its primary objective is to synthesize current knowledge on key microbial functions, including metal sequestration, xenobiotic degradation, redox regulation, and modulation of plant responses to biotic stress, while linking these functions to ecological processes such as host specificity, niche specialization, and community assembly. A distinctive aspect of this review is its ecosystem-level perspective, which shifts the focus from individual microbial taxa to the functional resilience of microbial communities in determining detoxification efficiency. The information provided in this review has a scope to provide framework to develop ecologically-sustaining, microbiome-based strategies for the detoxification of the environment and for conducting future bioremediation research.