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- Title
Genome sequence and analysis of the tuber crop potato.
- Authors
Xun Xu; Shengkai Pan; Shifeng Cheng; Bo Zhang; Desheng Mu; Peixiang Ni; Gengyun Zhang; Shuang Yang; Ruiqiang Li; Jun Wang; Orjeda, Gisella; Guzman, Frank; Torres, Michael; Lozano, Roberto; Ponce, Olga; Martinez, Diana; De la Cruz, Germán; Chakrabarti, S. K.; Patil, Virupaksh U.; Skryabin, Konstantin G.
- Abstract
Potato (Solanum tuberosum L.) is the world's most important non-grain food crop and is central to global food security. It is clonally propagated, highly heterozygous, autotetraploid, and suffers acute inbreeding depression. Here we use a homozygous doubled-monoploid potato clone to sequence and assemble 86% of the 844-megabase genome. We predict 39,031 protein-coding genes and present evidence for at least two genome duplication events indicative of a palaeopolyploid origin. As the first genome sequence of an asterid, the potato genome reveals 2,642 genes specific to this large angiosperm clade. We also sequenced a heterozygous diploid clone and show that gene presence/absence variants and other potentially deleterious mutations occur frequently and are a likely cause of inbreeding depression. Gene family expansion, tissue-specific expression and recruitment of genes to new pathways contributed to the evolution of tuber development. The potato genome sequence provides a platform for genetic improvement of this vital crop.
- Publication
Nature, 2011, Vol 475, Issue 7355, p189
- ISSN
0028-0836
- Publication type
Academic Journal
- DOI
10.1038/nature10158