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    Home > Food News > Food Articles > The biological genetic background of the invasion of Chinese grasslands has been revealed

    The biological genetic background of the invasion of Chinese grasslands has been revealed

    • Last Update: 2021-03-01
    • Source: Internet
    • Author: User
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    October 21, China Agriculture
    Second Institute of Agricultural Genomics Center and Plant Conservation Research Institute Wu Kongming
    team, Tobacco Research Institute, Lancaster University, University of Montpellier, France, National Agricultural Technology Extension Service Center A number of units, such as noroviron source and future group, jointly released the genome sequence of high-quality grass-greedy nightinger, revealing for the first time the biological genetic background and drug-resistant characteristics of the grassland-greedy nightinger population that invaded our country from the genomic level, which is of great guiding significance to the scientific prevention and control of grass-greedy nightinger. The results were published online on BioRxiv.Through high-volume sequencing techniques such as Illumina, PacBio, and Hi-C, a set of high-quality grass-gyro-glories genome sequences at chromosomal levels was constructed, with contig N50 reaching 5.6 M, which is by far the best-assembled grass-based nightingsome genome sequence. Further resequencing 105 samples from 16 provinces (municipalities and autonomous regions) of China revealed that the grasslands that invaded our country were a kind of "hybrid type" dominated by the genetic background of corn type; Traditional organophosphorus pesticides, organochlorine pesticides and pyrethroid pesticides have a higher frequency of resistance gene variation, but no new alamide pesticides and Bt toxin resistance gene variation points have been detected, indicating a high risk of resistance to the relevant traditional pesticides. The results also confirmed high resistance to organophosphorus and pyrethroid pesticides, while the new acetate pesticides and Bt toxins were more sensitive.
    This study shows that traditional pesticides such as organophosphorus pesticides, organochlorine pesticides and pyrethroids are not suitable for the prevention and control of intrusion into China's grasslands, while alamide pesticides, Bt toxins and Bt crops can effectively prevent and control grasslands.
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