菜 (Cucurbita pepo L.) 中三密度的QTL映射和稳定性分析
Yunli Wang1,2, Guichao Wang1,2, Dongjuan Lin1,2
1Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs/Northeast Agricultural University, Harbin, China.
Frontiers in plant science
|August 28, 2023
概括
研究人员确定了控制南瓜三密度的关键基因,这是一种影响植物管理和潜在皮肤刺激的特征. 这项研究确定了特定的遗传区域和一个候选基因,Cp4.1LG15g04400,对于理解和潜在地修改植物三体特征至关重要.
科学领域:
- 植物遗传学和分子生物学
- 农业科学 农业科学
- 细胞分化和增殖研究研究.
背景情况:
- 三体,植物表皮外生,作为细胞分化的模型.
- 长密三胞体 (LDTs) 的南瓜植物在种植中带来了挑战,影响收获并引起皮肤刺激.
研究的目的:
- 进行定量特征位点 (QTL) 分析,以检测 zucchini 中的 I 和 II 类型三体密度.
- 为了识别调节子三体密度的遗传标记物和候选基因.
主要方法:
- 从LDT和稀疏微三体 (SMT) 杂交线构建F2种群.
- 使用QTL-seq方法和用191个InDel标记器构建的遗传地图进行QTL分析.
- 在候选基因中进行基因表达分析和SNP识别.
主要成果:
- 两种稳定的QTL,CpTD3.1和CpTD15.1,被确定为三胞体密度,其中CpTD15.1是一个主要影响的QTL.
- CpTD15.1解释了12.71%-29.37%的表型变异,并且在物理上位于chr15-4991349和chr15-5766791之间.
- Cp4.1LG15g04400,CpTD15.1区域内的指蛋白基因,显示LDT和SMT线之间的差异表达,表明其在三密度调节中的作用.
结论:
- CpTD3.1和CpTD15.1是黄瓜三密度的显著QTL.
- 基因Cp4.1LG15g04400是调节南瓜多细胞非腺状三密度的强有力的候选者.
- 这些发现为了解菜的三合体发育机制和育种努力提供了基础.
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