A genome-wide association analysis of quantitative trait loci for protein fraction content in Tibetan wild barley
A genome-wide association analysis of quantitative trait loci for protein fraction content in Tibetan wild barley
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西藏野生大麦蛋白质组分含量数量性状位点的全基因组关联分析
DOI：
10.1007/s10529-011-0736-z
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发表时间：
2012-01-01
影响因子：
2.7
通讯作者：
Zhang, Guoping
中科院分区：
文献类型：
--
作者：
Jin, Xiaoli;Wei, Kang;Zhang, Guoping
白蛋白、球蛋白和蛋白含量可能受多基因/数量性状位点的遗传控制。相关分析显示，球蛋白与白蛋白、谷蛋白和蛋白蛋白显著相关，蛋白蛋白与谷蛋白密切相关。分布在7条染色体上的49个DArT标记与蛋白质组分含量相关。与hordein相关的DArT标记与与球蛋白和谷蛋白相关的DArT标记相同。只有与蛋白、球蛋白和谷蛋白相关的5个标记也与白蛋白相关。因此，大多数蛋白质组分的含量是由相同的基因控制的，这些基因可能对总蛋白质含量有贡献。这些与特定蛋白质组分相关的新标记的发现可用于大麦种质中控制蛋白质含量的基因检测。
The genetic associations and differences of four protein fractions were investigated in Tibetan wild barley. Albumin, globulin and hordein contents were under genetic control probably via multiple genes/quantitative trait loci. A correlation analysis showed that globulin was significantly associated with albumin, glutelin and hordein, while hordein was closely correlated with glutelin. Forty-nine diversity array technology (DArT) markers, which were distributed over seven chromosomes, were associated with the protein fraction contents. Those DArT markers associated with hordein were the same as those associated with globulin and glutelin. Only five markers associated with hordein, globulin and glutelin were also associated with albumin. Most of the protein fraction contents are therefore controlled by same genes which may contribute to total protein content. The discovery of new markers associated with specific protein fractions could be used to detect genes controlling protein content in the barley germplasm.