The development of 7E chromosome-specific molecular markers for Thinopyrum elongatum based on SLAF-seq technology.
The development of 7E chromosome-specific molecular markers for Thinopyrum elongatum based on SLAF-seq technology.
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基于SLAF-seq技术的长堇草7E染色体特异性分子标记的开发
DOI：
10.1371/journal.pone.0065122
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Chen J
中科院分区：
文献类型：
--
作者：
Chen S;Huang Z;Dai Y;Qin S;Gao Y;Zhang L;Gao Y;Chen J
Thinopyrum elongatum is an important relative of wheat, it is favored by many researchers for the disease resistant genes that exist in its E genome. Some studies have showed that the 7E chromosome of Th. elongatum contains resistance genes related to Fusarium head blight and wheat rust. Therefore, developing 7E chromosome-specific molecular markers linked to resistance genes will provide an important tool for exploring and using the resistant genes of Th. elongatum. In addition, it would greatly contribute in the effort to cultivate disease-resistant wheat varieties. Featured in high throughput, high-accuracy and low-cost, SLAF-seq technology has been widely used in molecular breeding, system evolution, and germplasm resource detection. Based on SLAF-seq, 518 specific fragments on the 7E chromosome of Th. elongatum were successfully amplified. A total of 135 primers were designed according to 135 randomly selected fragments, and 89 specific molecular markers of Th. elongatum were developed, with efficiencies up to 65.9%. These markers were all detected in a variety of materials, and they are all proved to be specific and stable. These markers can be used not only for detecting the 7E chromosome of Th. elongatum but also for providing an important theoretical and practical basis for wheat breeding by marker-assisted selection (MAS). This paper reports the first application of SLAF-seq technology with a high success rate in developing specific molecular markers for Th. elongatum, providing a strong case for the application of this new technology.
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