Insights into amphicarpy from the compact genome of the legume Amphicarpaea edgeworthii

第一作者：Yiyang Liu

第一单位：山东省农业科学院生物技术研究中心

通讯作者：Shubo Wan

 Abstract 

研究背景：Amphicarpy (seed heteromorphy) is a unique and fascinating reproductive strategy wherein a single plant produces both aerial and subterranean fruits. This strategy is believed to be an adaptation to life under stressful or uncertain environments.

主要研究：Here, we sequenced and de novo assembled a chromosome‐level genome assembly of the legume Amphicarpaea edgeworthii Benth.

结果1-基因组组装、注释：The 299‐Mb A. edgeworthii genome encodes 27,899 protein‐coding genes and is the most compact sequenced legume genome reported until date.

结果2-基因特征～小：Its reduced genome size may be attributed to the reduced long‐terminal repeat retrotransposon content, which stems from the unequal homologous recombination.

结果3-基因家族收缩：Gene families related to immunity and stress resistance have been contracted in A. edgeworthii, which is consistent with the notion that the amphicarpic reproductive strategy may be a complementary mechanism for its weak environmental‐adaptation ability.

结果4-ABCE模型：We demonstrated the “ABCE” model for the differentiation of chasmogamous and cleistogamous flowers.

结果5-地上、地下结实的种子：In addition, the characteristics of aerial and subterranean seeds in hard‐seededness were explored.

结论：Thus, we suggest that the A. edgeworthii genome, which is the first of an amphicarpic plant, offers significant insights into its unusual reproductive strategy that is a key resource toward comprehending the evolution of angiosperms.

 通讯作者 

doi: 10.1111/pbi.13520

Journal: Plant Biotechnology Journal

Published date: Nov 25, 2020