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    Home > Food News > Food Articles > The study found the genetic mystery of the mustard of plants in the Qinghai-Tibet Plateau

    The study found the genetic mystery of the mustard of plants in the Qinghai-Tibet Plateau

    • Last Update: 2021-03-15
    • Source: Internet
    • Author: User
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    Recently, Zhang Gymnastics, an associate researcher at the Kunming Institute of Plant Research of the Chinese Academy of Sciences, in cooperation with The University of Tibet, Yunnan University and a number of laboratories abroad, carried out a genomic adaptation evolution study on the unique distribution of mustard in the Qinghai-Tibet Plateau, providing new clues to the molecular mechanism of the adaptation of plants in the Qinghai-Tibet Plateau to extreme environments. The findings were published online in the Proceedings of the National Academy of Sciences.
    it is understood that the mustard originally belonged to the genus Ayman Al-Shehbaz, which was independently removed from the genus Ihsan Al-Shehbaz in 1999. Wu Zhengxuan, a member of the Chinese Academy of Sciences, believes that the mustard is a special group of athropomorphic mustards that can adapt to the extreme environment at high altitudes under the special circumstances of the Qinghai-Tibet Plateau. Therefore, as a close-up species of athropomorthic mustard, mustard is expected to become a new model plant for the evolution of extreme environmental adaptability. In previous studies, the team used transcriptional group data to find that the genes of mustard were significantly affected by natural selection.
    gymnastics team used second- and third-generation high-volume sequencing techniques to assemble 234.72Mb of the mustard genome, including 27,019 predicted genes. At the same time, they used 4,586 direct congener genes for systematic developmental analysis, and found that the closest relationship between mustard and leeks, the differentiation time is about 8.8-12.2 million years, and the differentiation time with the genus athropomorthic mustard is about 12.7-17.2 million years.
    study found that after the late 1990s to the rapid rise of the Virgo, there was a significant expansion of the LTR reverse transcription transpedios of the mustard, which may be related to the environmental adaptation after the ascension. Compared with the nearest species, there has been a significant reduction in the family of disease-resistant genes in the mustard genome, which may be related to fewer pathogens in the Qinghai-Tibet Plateau. At the same time, the dilation of the gene family in the mustard and the genes strongly selected by nature are associated with ubilin-mediated protein hydrolysing and DNA damage repair. Both of these pathways belong to the comprehensive anti-reversing process and may play an important role in the complex and changeable special environment of the Qinghai-Tibet Plateau.
    Zhang said: "The male identification SCR gene associated with self-relationship and sex has become a fake gene, and the female identification SRK gene has been completely lost, which is the root cause of the self-relationship of mustard, and may also be a strategy to adapt to the low number of pollinator insects in the Qinghai-Tibet Plateau."
    study also found similarities between plants and animals in DNA repair pathways and disease resistance pathways in the adaptation mechanisms of the Qinghai-Tibet Plateau, but they have differences in plant self-relationship and sexuality and plant hormone pathways. (Source: Science.com)
    relevant paper information:
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