root-microbiome
The root microbiome is the complex community of microorganisms—bacteria, fungi, and archaea—that colonize plant roots and the surrounding rhizosphere environment. These microbial communities are essential to plant health, facilitating nutrient acquisition, enhancing disease resistance, and influencing plant development and physiology. Because roots create unique chemical and physical conditions that support diverse microbial life, the root microbiome represents a critical interface between plants and soil that fundamentally shapes plant growth and productivity.
open_in_new WikipediaPubMed · 2026-03-25
Researchers discovered that certain root bacteria can exploit stressed plants by breaking down chemical compounds plants produce to help absorb iron. This bacterial attack prevents plants from getting iron and reduces their overall health, revealing a previously underappreciated way that microbes can harm their plant hosts.
Pseudomonas sp. strain NyZ480 possesses redundant xenA genes enabling degradation of coumarins and resistance to their antimicrobial effects
NyZ480 significantly colonizes iron-stressed Arabidopsis roots, trapping plants in perpetual iron scarcity and impairing overall fitness
xenA homologs are prevalent and redundant across environmental bacteria, indicating this opportunistic plant-harming strategy is widespread in nature
