Project description:We have undertaken a detailed study to identify expression polymorphism of NCRs. We used a custom Affymetrix oligonucleotide microarray to examine the expression changes of 566 NCRs in four different accessions of Medicago truncatula. Each accession was inoculated with two different rhizobial strains to assess the NCR expression differences caused by host-symbiont specificity. The NCRs displayed significant expression differences among the ecotypes but had subtle differences in gene expression because of strain difference.
