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Updated: Aug 8, 2026

Plant-Microbe Interaction: Transcriptional Response of Bacillus Mycoides to Potato Root Exudates
Published on: July 2, 2018
Rhizosphere microbiomes in drought-tolerant and drought-sensitive bermudagrass genotypes: root exudate association
Sayada Momotaz Akther1, Daniel Krakko2, Wei Shi1
1Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States.
Introduction:
Plant-microbiome interactions in the rhizosphere are critical for plant adaptation to environmental stress; however, the coordinated roles of root exudates and microbiome dynamics remain poorly understood.
Methods:
Integrating untargeted metabolomics and shotgun metagenomics, we analyzed drought responses in drought-tolerant and drought-sensitive bermudagrass genotypes.
Results:
Drought stress shaped the root exudate chemistry, which likely reprogrammed microbiome functions, such as TccC toxins and the Type VI secretion system, without considerable broad taxonomic shifts. A few metabolites, including riboflavin and 1-carboxy-6-hydroxy-3,4-dihydro-beta-carboline, were associated with Massilia putida, particularly in the rhizosphere of the drought-tolerant genotype.
Discussion:
Our data suggest a potential explanation for a genotype-driven strategy of microbiome modulation via metabolite signaling.
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