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果实大小和形状特征的基因组分析在果:通过GWAS分析揭示候选基因

Christian Dujak¹, Veredas Coleto-Alcudia¹, Maria José Aranzana^1,2

¹Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UABUB, Plant and Animal Genomics, Campus UAB, 08193 Bellaterra, Barcelona, Spain.

Horticulture research

|February 29, 2024

概括

基因组工具确定了果形状和大小的关键遗传标记. 这项研究强调了卵子家族蛋白质基因作为改善果育种计划的潜在目标.

科学领域:

植物遗传学和育种.
基因组学就是基因组学.
园艺科学园艺科学

背景情况:

基因组工具对于在作物育种中选择优质遗传物质至关重要.
果的形状和大小是影响消费者偏好和市场价值的重要品质特征.

研究的目的:

通过全基因组关联研究 (GWAS) 识别与果形状和大小相关的遗传标记和候选基因.
为了利用果REFPOP收藏中的遗传多样性来发现特征.

主要方法:

全基因组关联研究 (GWAS) 使用FarmCPU和BLINK模型对来自REFPOP集合的355种果基因型进行.
分析了三年来收集的11个水果形态参数的数据.
哈布洛克分析和RNA测序用于识别和验证候选基因.

主要成果:

确定了与水果大小和形状特征相关的59个单核酸多态 (SNP),相当于71个定量特征核酸 (QTN).
QTN分布在大多数果染色体中,特定的SNP与大小和形状属性相关.
属于卵子家族蛋白质组的MdOFP17和MdOFP4基因在一个显著的半球体中被确定,并显示了与水果形状相关的差异性表达.

结论:

在GWAS分析成功地确定了有希望的遗传标记和候选基因,包括OFP基因,果果形状和大小.
这些发现提供了宝贵的遗传见解,以提高果育种计划的效率,以获得理想的水果质量特征.
这项研究强调了OFPs和激素途径在调节果形状方面的作用.

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