RT Journal Article
SR Electronic
T1 Genome wide association study reveals plant loci controlling heritability of the rhizosphere microbiome
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2020.02.21.960377
DO 10.1101/2020.02.21.960377
A1 Siwen Deng
A1 Daniel Caddell
A1 Jinliang Yang
A1 Lindsay Dahlen
A1 Lorenzo Washington
A1 Devin Coleman-Derr
YR 2020
UL http://biorxiv.org/content/early/2020/02/23/2020.02.21.960377.abstract
AB Host genetics has recently been shown to be a driver of plant microbiome composition. However, identifying the underlying genetic loci controlling microbial selection remains challenging. Genome wide association studies (GWAS) represent a potentially powerful, unbiased method to identify microbes sensitive to host genotype, and to connect them with the genetic loci that influence their colonization. Here, we conducted a population-level microbiome analysis of the rhizospheres of 200 sorghum genotypes. Using 16S rRNA amplicon sequencing, we identify rhizosphere-associated bacteria exhibiting heritable associations with plant genotype, and identify significant overlap between these lineages and heritable taxa recently identified in maize. Furthermore, we demonstrate that GWAS can identify host loci that correlate with the abundance of specific subsets of the rhizosphere microbiome. Finally, we demonstrate that these results can be used to predict rhizosphere microbiome structure for an independent panel of sorghum genotypes based solely on knowledge of host genotypic information.