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开发和应用通用ND-FISH探针来检测基于Agropyron cristatum可转移元素的P基因组染色体

Yangyang Sun¹, Haiming Han¹, Xiao Wang¹

¹National Crop Genebank, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 China.

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概括

研究人员开发了用于非变性光现场混合 (ND-FISH) 的新型寡核酸 (oligo) 探针,以有效检测小麦中的Agropyron cristatum的P基因组染色体. 这种方法简化了基因分析,有助于小麦的改良.

科学领域:

植物遗传学和细胞遗传学
分子生物学和基因组学
农业科学和作物改良.

背景情况:

光在位杂交 (FISH) 对细胞遗传学至关重要,但传统方法耗时.
在非化FISH (ND-FISH) 中的寡核酸 (oligo) 探针提供了更快,更具成本效益的替代方案.
亚格罗皮龙克里斯塔图姆 (P基因组) 对小麦改进有价值,但对其染色体缺乏特定的橄探针.

研究的目的:

使用ND-FISH设计和验证用于检测P基因组染色体的寡核酸探针.
开发一种快速有效的方法来识别小麦背景中的P染色体.
为了促进Agropyron cristatum在小麦育种计划中的利用.

主要方法:

根据Agropyron cristatum序列中的可转移元素分布设计了94个Oligo探头.
验证了单一的Oligo探头,并开发了混合探头 (Oligo-pAc) 以提高信号检测.
在各种小麦背景下测试探头,包括二倍体,转位线和全倍体.

主要成果:

确定了12个单一的形探针,在P染色体上产生稳定的信号.
开发了混合的Oligo-pAc探针,其信号强度得到了提高,覆盖了整个Agropyron cristatum染色体.
证明Oligo-pAc可以取代传统的基因组在位杂交 (GISH) 探针.

结论:

通过ND-FISH成功开发了一组Oligo探针,用于通过ND-FISH有效地识别P基因组染色体.
这种新方法为传统的FISH/GISH测定提供了快速,经济高效的替代方案.
这一进步促进了Agropyron cristatum在提高小麦遗传和育种方面的应用.

关键词:

亚格罗皮龙水晶 (Agropyron cristatum) 是一个 ND-FISH的意思是"没有鱼".有氧核酸探针探测器可转移的要素是可以转移的.

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