Chinese scientists deciphered naked oatl -based passwords

According to the characteristics of Xinhua News Agency, as a six -fold crop, it has the characteristics of large genome and high repeated sequence content. Its genome sequencing assembly has always been a worldwide problem. A few days ago, Chinese scientists made significant progress in the research of naked oats, and decippped the six -fold naked oatl -based password that originated in my country and widely planted, and opened the nude cyclone base. On the evening of July 18, the international well -known academic journal "Nature · Genetics" published a research paper "Based on the Reference Genome Revelation of the Origin and Evolution of Six Bex Elberry".

Whether oatmeal seeds belong to the shell is divided into two types: leather and naked oats. Compared with skin oats, naked oats are simpler. my country is mainly planted in naked oats. The main producing areas are concentrated in Inner Mongolia, Hebei, Shanxi, etc. land. According to Ren Changzhong, the chief scientist of the National Oatmeal buckwheat industry technology system and a researcher at the Baicheng Academy of Agricultural Sciences of Jilin Province, the existing cultivation of oats has naturally hybridized and doubled in the long evolution. Contains six times in the three genomes of A, C and D. Therefore, the naked oatmeal group is composed of about 11 billion bases, and is distributed in 21 pairs of chromosomes in the nucleus of 3 Asian genomes. Its genome is huge and complex, with a volume of about 40 times the rice genome, and about 87%of genomic DNAs are repeated sequences, making it very difficult for its genome test assembly research.

In this study, Researcher Ren Changzhong led by the Sichuan Agricultural University and Jilin Provincial Academy of Agricultural Sciences as the core of the oatmeal joint research team selected the oatmeal varieties of my country's nude oats origin. Its high -duplicate sequence content leads to problems that may be encountered in the genome assembly. It is designed to select the ultra -long sequencing technology that can be used for longer DNA fragments high accuracy sequencing, and uses the team of oatmeal species in the team for nearly 20 years. The most likely four -fold body and ancestor ancestor for cultivating oats, combined with different technical means such as HIC, second -generation sequencing, full -length transcription group sequencing and transcription group sequencing, finally completed the chromosomal assembly and mounting of six times nude oats in China And notes, the high -quality reference genome of naked oats was obtained.

Ren Changzhong said that the research team has always taken the sequencing of the naked oatmeal influence of China. Gender "chips", improving the competitiveness of the domestic oat industry, and ensuring food security are all important aspects.

The first author of the paper, Peng Yuanying, the main member of the research team, Sichuan Agricultural University, introduced that many years ago, experts from Germany, the United States, Australia, Sweden, Canada and other countries have jointly carried out related research on oats, which also gives us to complete the related naked oats. The work enhances the sense of urgency.

The thesis communication author Ren Changzhong said: "Looking forward to the results of the research can further promote the basic research of oats and the breeding of molecular marking, let the naked oats '" Chinese core' plug in the wings of industrialized, and strive to make Chinese oatmeal technology innovation and industrial development more developed more On the first floor. "

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