The new mechanism of variable shear regulation plant anti-salt has been revealed

Recently, the research results of Yan Kang and Zheng Chengchao of the School of Life Sciences of Shandong Agricultural University were published in The New Botanist. They innovatively revealed the interoperability of the athropomorphic mustard-specific shearing factor SR45a and the core component of the cap composite CBP20 in response to the regulatory mechanism when the salt content is too high in the growth environment.
, according to Yan Kang, plants have evolved a variety of response mechanisms in order to adapt to and resist the adverse growth conditions of salt stress. Among them, variable shearing, also known as selective shearing, is a key regulatory factor after DNA is converted to ICTs. By selecting different cutting points, the KERC molecules are converted into different messenger ICTs, so that a gene can be encoded to form a number of different transcription products and protein products, and ultimately regulate the growth and development of plant organisms.
more and more transcription group data show that plants can induce different forms of variable shearing when subjected to various environmental stresses and development periods, and induce plants to produce corresponding response mechanisms to adapt to the growth conditions of the outside world. However, the signal pathway and mechanism of shear factor to plant salt stress are not clear.
Yankang and Zheng Chengchao studied a large number of shearing factors and different genes with variable shears by reverse transcription of PCR methods, taking the amoeba in high salt growth environment and normal growth environment as the research object. It was found that the shear factor SR45a had significant changes in plant high salt growth environment, and it also had two products, SR45a-1a and SR45a-1b. These two forms can be significantly induced by high salt stress, and it is speculated that the shear factor may be involved in the molecular regulatory signaling pathway of plant salt stress.
In order to further explore the molecular mechanism of the shear factor SR45a involved in the coercion of amoeba salt, the team also found that the two variable shear forms of SR45a can be combined with CCBP20, and SR45a-1b can promote SR45a-1a and CAP20 to be more closely combined.
plant cap complex and variable scissors, the main regulation of RNA processing process, that is, to help RNA plus hat structure. They believe that in the salt stress environment, SR45a and CBP20 work together to regulate the processing process of CYT, the core factor of salt stress, i.e. gene transcription level and shearing.
results provide important evidence for plant shear factors and CBC complexes to respond together and regulate plant response salt signals, and update the current understanding of post-transcription regulation mechanism under salt stress. (Source: Li Chen Guo Cuihua, China Science Journal)
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