Wheat A genome sequencing completed
Recently, the reporter learned from the Chinese Academy of Sciences that Chinese scientists have led the sequencing of the wheat genome A.
Wheat feeds about 40% of the world's population, providing 20% ​​of the world's human calories and protein needed for nutrition. According to reports, common wheat grown widely in production is a heterologous hexaploid with three genomes A, B and D. The wheat genome is large and complex, 40 times that of the rice genome. Sequencing of genomes has been difficult and has become a bottleneck restricting the development of wheat basic and applied research.
Through comparative analysis with the genomes of known gramineous crops, the scientists identified 3,425 A genome-specific genes and 24 novel small RNAs, and found that disease-resistant genes containing NB-ARC domains were significantly increased in the wheat A genome. The expansion of these genes and small RNAs may be the main cause of wheat's resistance to harsh living conditions and wide adaptability. In addition, this study also screened a large number of genetic molecular markers that will help promote molecular breeding of wheat.
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