A reference genome for pea provides insight into legume genome evolution

First author: Jonathan Kreplak; Affiliations: Université Bourgogne Franche-Comté (勃艮第-弗朗什孔泰大学): Dijon, France

Corresponding author: Judith Burstin

We report the first annotated chromosome-level reference genome assembly for pea, Gregor Mendel’s original genetic model. Phylogenetics and paleogenomics show genomic rearrangements across legumes and suggest a major role for repetitive elements in pea genome evolution. Compared to other sequenced Leguminosae genomes, the pea genome shows intense gene dynamics, most likely associated with genome size expansion when the Fabeae diverged from its sister tribes. During Pisum evolution, translocation and transposition differentially occurred across lineages. This reference sequence will accelerate our understanding of the molecular basis of agronomically important traits and support crop improvement.

作者报道了第一个注释的染色体级别的豌豆参考基因组，该植物是孟德尔遗传的模式物种。系统遗传学和古基因组学显示不同豆科植物之间存在基因组重排，并且重复序列对于豌豆的基因组演化起到了非常主要的作用。与其他豆科植物相比，豌豆的基因组表现出更加强烈的基因波动，这有可能是野豌豆族Fabeae与其姊妹族分化之后基因组大小的扩张所导致的。在豌豆属的演化过程中，移位和转位在不同的谱系中存在差异。该参考基因组的报道将有助于加速我们对于豌豆这一重要豆科作物重要农艺性状潜在分子基础的理解，并且有利于豌豆的遗传改良。

通讯：Judith Burstin（https://www6.dijon.inra.fr/umragroecologie_eng/DEPARTMENTS/GEAPSI/PROFILE/BURSTIN-Judith)

研究方向：豌豆基因组。

doi: https://doi.org/10.1038/s41588-019-0480-1

Journal: Nature Genetics

Published online: September 02, 2019