![]() ![]() This altered diseased severity was accompanied by enhanced heterogeneity in associated Xanthomonas population counts, although no significant shift in overall microbiota density, microbial community structure, and function was evident. However, O 3 stress exacerbated the disease severity on resistant cultivar. Pathogen infection resulted in a distinct microbial community structure and functions on the susceptible cultivar, while concurrent O 3 stress did not further alter the community structure, and function. We evaluated the impact of elevated tropospheric ozone (O 3), individually and in combination with Xanthomonas perforans infection, under open-top chamber field conditions on overall disease outcome on resistant and susceptible pepper cultivars, and their associated microbiome structure, function, and interaction network across the growing season. ![]() While the physiological and transcriptional response of the host to biotic and abiotic stresses have been intensely studied, little is known about the resilience of associated microbiomes and their contribution towards tolerance or response to these stresses. ![]()
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