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组装,比较分析和利用大豆单个单 haplotype 参考基因组

Mary Jane C Espina¹, John T Lovell^2,3, Jerry Jenkins²

¹Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, Minnesota, 55108, USA.

The Plant journal : for cell and molecular biology

|September 14, 2024

概括

一个新的大豆参考基因组组合,Wm82.a6,以更高的精度改进了威廉姆斯82的基因组. 这种更新的组装显示出显著的基因组异质性和来自其他大豆品种的内进,改善了比较基因组学资源.

科学领域:

植物基因组学和遗传学
生物信息学和计算生物学
农作物科学与育种农作物科学与育种

背景情况:

自2008年以来,威廉姆斯82大豆品种一直是标准参考基因组.
现有的参考基因组在不同的子系中表现出基因组异质性.
准确和连续的基因组组合对于推进大豆研究至关重要.

研究的目的:

为大豆提供更新的,高质量的基因组参考组件 (威廉姆斯82,版本Wm82.a6).
描述威廉姆斯82基因组中的基因组异质性和内向性.
为非生物压力耐药品种Fiskeby III.生成高质量的基因组组件.

主要方法:

基因组组装使用太平洋生物科学HiFi长读.
使用HiC技术进行染色体整合.
基因组注释和对现有组合和Fiskeby III基因组进行比较分析.

主要成果:

一个1.01Gb的基因组组 (Wm82.a6) 包含20个大豆染色体中的36个结合体,有48,387个基因模型.
在Wm82.a6中确定了广泛的基因组异质性,包括Kingwa品种在染色体03和07上的内进.
在染色体12上发现了一个新的异质区域 (>20 Mb),并对Wm82.a6和Fiskeby III之间的多态性进行了表征,特别是在耐铁缺乏的QTL.

结论:

Wm82.a6组件提供了更连续和准确的威廉姆斯82基因组的表现,解决了以前的异质性.
鉴定到的基因组变异突显了威廉姆斯82基因组的复杂性,并提供了对其进化历史的见解.
Wm82.a6和Fiskeby III基因组组件显著提高了大豆的比较和功能基因组学能力.

关键词:

在DNA重组的过程中,DNA重组.甘氨酸最大值 (Glycine max) 是一种进行比较的基因组学.基因组结构和进化过程营养压力是一种营养压力.多重积分多样性多重积分多样性

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