Phytoremediation Powered by Endophytes: Toward a Greener, Sustainable Agriculture

Abstract

Endophytes, microorganisms that live within plant tissues, are emerging as promising, eco-friendly solutions for both environmental remediation and sustainable agriculture. This review examines how these beneficial microbes can be leveraged to address the significant threats of soil and water pollution while reducing the agricultural sector's reliance on synthetic agrochemicals. Endophytes enhance phytoremediation by directly degrading or detoxifying pollutants and by improving the host plant's ability to tolerate stress and absorb contaminants such as heavy metals and pesticides. In agriculture, they boost plant growth by producing phytohormones and enabling biological nitrogen fixation, which in turn reduces the need for chemical fertilizers. They also strengthen plant resilience against biotic and abiotic stressors, such as drought, further diminishing the use of chemical inputs. Despite their considerable potential, challenges remain, including the lack of a centralized database for identification and a limited understanding of host specificity and the dynamics of endophyte communities under different environmental conditions. To fully realize the benefits of endophytes, future research must focus on comprehensive studies that explore their ecological interactions, model their behavior in plant tissues, and address the trade-offs between their positive effects and potential limitations. By integrating endophyte-based strategies, we can couple pollution mitigation with improved crop productivity, aligning with the principles of a circular bioeconomy and advancing sustainable development goals.