Exploring and exploiting pan-genomics for crop improvement
2019
Tao, Yongfu | Zhao, Xianrong | Mace, Emma S. | Henry, Robert | Jordan, David
Genetic variation ranging from single nucleotide polymorphisms (SNPs) to large structural variants (SVs) can cause variation of gene content among individuals within the same species. There is an increasing appreciation that a single reference genome is insufficient to capture the full landscape of genetic diversity of a species. Pan-genome analysis offers a platform to evaluate genetic diversity of a species via investigation of its entire genome repertoire. Although a recent wave of pan-genomic studies has shed new light on crop diversity and improvement using advanced sequencing technology, the potential applications of crop pan-genomics in crop improvement are yet to be fully exploited. In this review, we highlight the progress achieved in understanding crop pan-genomics, discuss biological activities that cause SVs, review important agronomical traits affected by SVs and present our perspective on the application of pan-genomics in crop improvement.
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