Chromosome-level reference genome of <i>Vitis piasezkii</i> var. <i>pagnucii</i> provides insights into a new locus of resistance to grapevine powdery mildew.

ABSTRACT: Grapevine powdery mildew (GPM), caused by Erysiphe necator, poses a significant threat to all green grapevine tissues, leading to substantial economic losses in viticulture. Traditional grapevine cultivars derived from Vitis vinifera are highly susceptible to GPM, whereas the wild Chinese accession Baishui-40 (BS-40) of V. piasezkii var. pagnucii exhibits robust resistance. To illuminate the genetic basis of resistance, we sequenced and assembled the chromosome-level genome of 'BS-40', achieving a total mapped length of 578.6 Mb distributed across nineteen chromosomes. A comprehensive annotation identified 897 nucleotide-binding leucine-rich repeat (NLR) genes in the 'BS-40' genome, which exhibited high sequence similarity across Vitis genomes. 284 of the

SUBMITTER: Zhao L 

PROVIDER: S-EPMC12313342 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature