Comprehensive genomic resources related to domestication and crop improvement traits in Lima bean

第一作者：Tatiana Garcia

第一单位：哥伦比亚国立大学

通讯作者：Maria Isabel Chacón-Sánchez

 Abstract 

背景回顾：Lima bean (Phaseolus lunatus L.), one of the five domesticated Phaseolus bean crops, shows a wide range of ecological adaptations along its distribution range from Mexico to Argentina. These adaptations make it a promising crop for improving food security under predicted scenarios of climate change in Latin America and elsewhere.

主要研究：In this work, we combine long and short read sequencing technologies with a dense genetic map from a biparental population to obtain the chromosome-level genome assembly for Lima bean.

结果1-基因注释：Annotation of 28,326 gene models show high diversity among 1917 genes with conserved domains related to disease resistance.

结果2-利马豆-普通菜豆比较基因组：Structural comparison across 22,180 orthologs with common bean reveals high genome synteny and five large intrachromosomal rearrangements. 

结果3-群体遗传结构：Population genomic analyses show that wild Lima bean is organized into six clusters with mostly non-overlapping distributions and that Mesomerican landraces can be further subdivided into three subclusters. 

结果4-生物学特性：RNA-seq data reveal 4275 differentially expressed genes, which can be related to pod dehiscence and seed development.

结论：We expect the resources presented here to serve as a solid basis to achieve a comprehensive view of the degree of convergent evolution of Phaseolus species under domestication and provide tools and information for breeding for climate change resiliency.

 摘 要 

doi: https://doi.org/10.1038/s41467-021-20921-1

Journal: Nature Communications

Published date: Jan 29, 2021