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Scientists complete world's first telomere-to-telomere wheat genome assembly

Xinhua | Updated: 2025-04-15 17:10
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BEIJING -- Scientists have successfully completed the world's first telomere-to-telomere (T2T) genome assembly of hexaploid bread wheat, marking a major breakthrough in wheat genome research.

Wheat has long been a focus for scientists seeking to improve its yield and quality. However, its exceptionally complex genome has posed persistent challenges for in-depth research and breeding efforts.

Led by the Institute of Advanced Agricultural Sciences of Peking University, the scientists successfully assembled the T2T genome of hexaploid wheat using cutting-edge sequencing technologies and multiple algorithmic approaches. The findings were published in the journal Nature Genetics.

Compared to previous versions, this genome assembly made significant progress in completeness, continuity and accuracy, establishing a solid foundation for functional genomics research. The achievement provides robust scientific support for national food security strategies, said the senior co-corresponding author Deng Xing Wang.

The complete genome serves as a detailed map, allowing -- for the first time -- clear resolution of particularly complex regions in the wheat genome. In addition, the identification of 34,120 new high-confidence genes opens up new avenues for disease-resistant wheat breeding and a wide range of other research initiatives.

This achievement not only deepens the understanding of wheat genome structure and evolutionary mechanisms, but also establishes a paradigm for analyzing other complex polyploid crop genomes, Deng noted.

Leveraging this high-quality reference genome, scientists will be able to more precisely identify key genes related to yield, quality, and disease resistance, paving the way for revolutionary breakthroughs in wheat variety improvement, he said.

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