叶绿体泛基因组和比较转录组学揭示了黄瓜的遗传变异和温度适应
Lei Xia1, Han Wang1, Xiaokun Zhao1
1National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
International journal of molecular sciences
|May 27, 2023
概括
这项研究揭示了印度黄瓜菌体基因组的显著遗传变异,突出了它们改善作物的潜力. 黄瓜的 хлоропласт通过调节新陈代谢来适应温度压力,其中特定的基因表达变化.
科学领域:
- 植物基因组学 植物基因组学
- 作物遗传学作物遗传学
- 分子生物学分子生物学
背景情况:
- 黄瓜的核基因组已被广泛研究,但有机体基因组信息,特别是叶绿体基因组,仍然在很大程度上不清楚.
- 叶绿体基因组高度保存,对研究植物系谱,化和适应有价值.
研究的目的:
- 为了构建第一个黄瓜质细胞泛基因组.
- 为了研究黄瓜菌体基因组内的遗传变异.
- 在温度压力下探索质细胞基因表达.
主要方法:
- 来自121个黄瓜生殖质中的50个完整的叶绿体基因组组合.
- 比较基因组学,遗传学分析,单元型分析和人口遗传结构分析.
- 转录组分析以研究在高温和低温压力下基因表达.
主要成果:
- 组装了50个完整的叶绿体基因组,展示了典型的四部分结构.
- 印度生态型黄瓜显示出更大的遗传变异,表明尚未开发的遗传资源.
- 遗传学分析发现了三种不同的黄瓜生殖质类型.
- 转录组分析显示,在温度压力下 *matK* 的显著上调,在热压力下 *accD* 的更高的编辑效率.
结论:
- 黄瓜的质体通过调节脂质和核糖体代谢来应对温度压力.
- 基因 *accD* 可能在耐热性中起作用.
- 这项研究提供了关于黄细胞基因组变异和适应机制在黄瓜的见解.
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