NBS-Encoding Genes in Brassica napus Evolved Rapidly After Allopolyploidization and Co-localize With Known Disease Resistance Loci.

ABSTRACT: Genes containing nucleotide-binding sites (NBS) play an important role in pathogen resistance in plants. However, the evolutionary fate of NBS-encoding genes after formation of allotetraploid Brassica napus (A_nA_nC_nC_n, 2n = 38) is still unknown. We performed a genome-wide comparison of putatively functional NBS-encoding genes in B. napus and its progenitor species Brassica rapa (A_rA_r, 2n = 20) and Brassica oleracea (C_oC_o, 2n = 18), identifying 464, 202, and 146 putatively functional NBS-encoding genes respectively, with genes unevenly distributed in several clusters. The A_n-subgenome of B. napus possessed similar numbers of NBS-encoding genes (191 genes) to t

SUBMITTER: Fu Y 

PROVIDER: S-EPMC6363714 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature