Under the joint guidance of associate researcher Wang Changhu and researcher Ou Yongxiang, PhD student Xiao Shimin of the Agricultural and Biotechnology Research Center of the South China Botanical Garden of the Chinese Academy of Sciences discovered that Arabidopsis OXS3 (OXIDATIVE STRESS 3) family proteins are involved in ABA (Abscisic acid) signal transduction The role of regulation in
Adversity can induce the growth of plant seedlings to stagnate, allowing plants to wait for conditions conducive to growth
Researchers discovered in early studies that some members of the OXS3 family of proteins play an important role in the response of plants to heavy metals and redox stress
To this end, the researchers comprehensively used CRISPR/Cas9, yeast two-hybrid, chromatin immunoprecipitation and promoter activity detection and other technical methods to clarify the relationship between Arabidopsis OXS3 family proteins and ABA signal transduction, and proposed A related model: When plants are not under environmental stress, OXS3 family proteins interact with AFP1 (ABI FIVE BINDING PROTEIN 1) to reduce the occupancy of histone γ-H2A.
ABI4 ABI5 When plants are under stress, the ABA-responsive protein SnRK1 (SNF1-related protein kinase 1) can phosphorylate OXS3 family proteins and transfer them from the nucleus to the cytoplasm
ABI4 ABI4 Related paper information: https://doi.
https://doi.
org/10.
1093/jxb/erab237
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