文献类型： 外文期刊
作者： Guangyao Zhao; Cheng Zou; Kui Li; Kai Wang; Tianbao Li; Lifeng Gao; Xiaoxia Zhang; Hongjin Wang; Zujun Yang; Xu Liu; Wenkai Jiang; Long Mao; Xiuying Kong; Yuannian Jiao & Jizeng Jia
期刊名称： Nature Plants
ISSN： 2055-026X
年卷期： 2017 年
页码：
收录情况： JCR（2021版）
摘要： Wheat is an important global crop with an extremely large and complex genome that contains more transposable elements (TEs) than any other known crop species. Here, we generated a chromosome-scale, high-quality reference genome of Aegilops tauschii, the donor of the wheat D genome, in which 92.5% sequences have been anchored to chromosomes. Using this assembly, we accurately characterized genic loci, gene expression, pseudogenes, methylation, recombination ratios, microRNAs and especially TEs on chromosomes. In addition to the discovery of a wave of very recent gene duplications, we detected that TEs occurred in about half of the genes, and found that such genes are expressed at lower levels than those without TEs, presumably because of their elevated methylation levels. We mapped all wheat molecular markers and constructed a high-resolution integrated genetic map corresponding to genome sequences, thereby placing previously detected agronomically important genes/quantitative trait loci (QTLs) on the Ae. tauschii genome for the first time.
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