Co-evolutionary associations between root-associated microbiomes and root transcriptomes in wild and cultivated rice varieties

Plant Physiology and Biochemistry : PPB
Lei TianChunjie Tian

Abstract

The plants and root-associated microbiomes are closely related. Plant metabolic substances can serve as a nutrient source for the microbiome, and in return, the microbiome can regulate the production of plant metabolic substances. Wild rice (Oryza rufipogon), as the ancestor of cultivated rice (Oryza sativa), has changed several metabolic pathways and root-associated microbiome during evolution. Thus, the study of the different associations between metabolic pathways and root-associated microbiomes in wild and cultivated rice varieties is important for rice breeding. In this article, the co-evolutionary association between metabolic pathways, which are based on transcriptome data, and root-associated microbiomes, which are based on 16S rRNA and internal transcribed spacer (ITS) amplicon data, in wild and cultivated rice was studied. The results showed that the enriched pathways were differentially correlated with the enriched microbiomes in wild and cultivated rice varieties. Pathways for 'Glutathione metabolism', 'Plant-pathogen interaction', 'Protein processing in endoplasmic reticulum' and 'Tyrosine metabolism' were positively associated with the improved relative abundance of bacterial and fungal operational taxonomic units...Continue Reading

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