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在北美公共大豆育种计划中编目SCN耐药基点

Anser Mahmood¹, Kristin D Bilyeu², Mária Škrabišová³

¹Division of Plant Science and Technology, University of Missouri, Columbia, MO, United States.

Frontiers in plant science

|December 6, 2023

概括

全基因组关联研究确定了七个主要的遗传基因位点,其中包括三个新型基因位点,用于大豆囊线虫 (SCN) 耐药性. 这项研究有助于开发具有多种遗传抵抗模式的抗SCN大豆品种.

科学领域:

植物病理学植物病理学
遗传学是一个遗传学.
农业学是一种农业学.

背景情况:

在美国,大豆囊线虫 (SCN) 造成大量的收获损失,每年超过15亿美元.
开发抗SCN的大豆品种对于可持续农业至关重要.

研究的目的:

在美国公共大豆育种计划中识别与SCN耐药性相关的遗传位置.
发现针对各种SCN种群的新型遗传抵抗机制.

主要方法:

全基因组关联研究 (GWAS) 在两个大豆小组上进行:密苏里大学育种计划 (密苏里小组) 和美国农业部统一大豆测试-北方地区 (NUST).
对多个SCN种群 (HG类型) 的抗药性进行了评估.

主要成果:

密苏里州小组在染色体2,8,11,14,17和18上发现了与SCN耐药性相关的七种定量特征核酸 (QTNs).
在NUST小组的染色体7和18上发现了三种SCN抗性相关的QTN.
解密了七个主要的遗传基因位点,包括三个新型基因位点,确定了候选基因.

结论:

这项研究阐明了美国大豆育种计划中SCN耐药性的遗传结构.
确定了有利的等位基组组合和生殖质,用于开发具有多样性遗传抵抗力的SCN耐药大豆品种.
这些发现为培育具有增强SCN耐药性的改良大豆品种提供了框架.

关键词:

SCN (Heterodera glycines Ichinohe) 属的植物,它们的发源地在南北半球.基因组广泛关联研究 (GWAS)耐药性对Heterodera glycines 1 (Rhg1) 的抗药性可能存在.豆类 (甘氨酸最大 (L.) Merr.)) 是一种大豆.α-可溶性N-乙烯胺胺敏感因子附着蛋白 (α-SNAP)

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