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使用分子标记物探索果中的遗传和表观遗传变化:对克隆传播的影响
Umanath Sharma1,2, Arindam Sikdar1,2, Abir U Igamberdiev1
1Department of Biology, Memorial University of Newfoundland, 45 Arctic Avenue, St. John's, NL A1C 5S7, Canada.
Current issues in molecular biology
|August 25, 2023
概括
林果植物在组织培养过程中保持遗传完整性. 然而,表观遗传变化,特别是DNA甲基化模式,在体外和温室条件之间存在差异.
科学领域:
- 园艺科学 园艺科学
- 植物生物技术 植物生物技术
- 分子遗传学 分子遗传学
背景情况:
- 林冈 (Vaccinium vitis-idaea L.) 是一种有价值的园艺作物,以其抗氧化特性而闻名.
- 植物组织培养提供了先进的传播,但可能导致遗传和表观遗传不稳定性,影响统一性.
- 确保符合种类的种植材料对于农业企业的成功至关重要.
研究的目的:
- 在组织培养和温室条件下评估lingonberry的形态特征和遗传/表观遗传变异.
- 用分子标记物评估微传播的果的克隆忠诚度.
- 在体外和体外培养过程中调查表观遗传修饰,特别是DNA甲基化.
主要方法:
- 在温室和体外条件下进行形态特征分析.
- 使用表达序列标记 (EST) -聚合酶链反应 (PCR),EST-简单序列重复 (SSR) 和基因组 (G) -SSR标记器进行克隆忠实度评估.
- 使用甲基化敏感放大多态化 (MSAP) 技术量化DNA甲基化.
主要成果:
- 混合H1显示较高的叶子长度/宽度 (温室) 和射击数量/高度/活力 (体外) 比品种Erntedank.
- 分子标记证实了遗传完整性,显示了微繁殖和成长植物中的单态带.
- 与温室条件相比,DNA甲基化有所不同,在体外总甲基化较高 (32-44%),但在组织培养中更多的半甲基化带.
结论:
- 林冈在体外和体外条件下表现出稳定的遗传完整性.
- 显著的表观遗传变异,特别是DNA甲基化模式,发生在种植期间.
- 了解这些表观遗传变化对于优化果繁殖和确保作物统一至关重要.
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