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在MdBPM2/MdRGLG3-MdNAC83网络中的自然变化控制了果储存能力的定量分离

Bei Wu¹, Fei Shen¹, Ziying Zhou¹

¹College of Horticulture, China Agricultural University, Beijing, 100193, China.

Journal of integrative plant biology

|October 1, 2025

概括

研究人员确定了果果存储能力的关键遗传变异,提高了育种的预测准确性. 这项工作推进了分子定量遗传学,并为基因组编辑提供了目标,以增强作物特征.

科学领域:

植物遗传学植物遗传学
分子遗传学分子遗传学
量化遗传学量化遗传学

背景情况:

果的储存能力是一个复杂的特征,受多个基因的影响.
之前的工作确定了62个定量特征位点 (QTLs) 的可存储性,并开发了基因组学辅助预测 (GAP) 模型.

研究的目的:

将果的储存能力剖析成孟德尔的因素.
为了确定候选基因和影响存储能力的功能变异.
提高果育种基因组学辅助预测模型的准确性.

主要方法:

从QTL区域选候选基因 (MdNAC83,MdBPM2,MdRGLG3) 来进行选.
分析促进子和编码区域变异 (删除,SNP) 以及它们对基因表达和蛋白质活性的影响.
调查在无处不在途径中的基因相互作用.
将功能标记器集成到更新的GAP模型的GenoBaits SNP阵列中.

主要成果:

确定了MdNAC83的特定变异,影响其表达和基因激活.
确定MdBPM2和MdRGLG3参与MdNAC83无处不在,特定的SNP减少了这种活动.
通过使用包含功能标记的更新的GAP模型,观察到肉和脆度 (收获和可保留性) 的预测准确度提高.
在六个基因中构建了一个由八个门德尔变异组成的变异网络.

结论:

鉴定到的遗传变异为人们提供了关于果储存能力的分子基础的见解.
改进的GAP模型改善了可取储存性特征的育种策略.
这些发现为未来的基因组编辑应用提供了目标,以加速果的改进.

关键词:

马卢斯家禽 (Malus domestica Borkh) 是一个在家中的动物.果实可存储性果实可存储性遗传变异是一种遗传变异.蛋白质的无处不在化定量特征是一种定量特征.

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