%0 Journal Article
%T Expression Pattern, Interaction Network, and Functional Analysis of the <i>Arabidopsis</i> Botrytis Susceptible1 Interactor
%A Jianzhong Huang
%A Hongbin Zhang
%A Zhuojun Li
%A Xiuying Guan
%A Xiaoju Zhong
%A Peng Jia
%A Kai Chen
%J Journal of Biomedical Science and Engineering
%P 171-178
%@ 1937-688X
%D 2024
%I Scientific Research Publishing
%R 10.4236/jbise.2024.1710013
%X E3 ubiquitin ligases are participated in numerous processes, regulating the response to biotic and abiotic stresses. Botrytis susceptible1 interactor (BOI) is a RING (Really Interesting New Gene)-type E3 ligase that mediates the ubiquitination of BOS1 (Botrytis susceptible1), a transcription factor involved in stress and pathogen responses. Although BOI is an E3 ligase, there are reports to show that BOI interacts with target proteins such as DELLAs or CONSTANS to repress gibberellin responses and flowering without the degradation of the target proteins. In this article, we utilize diversified methods to comprehensively analyze the expression pattern, interaction network and function of <i>BOI </i>gene. Firstly, 1800 bp upstream region of <i>BOI</i> gene from <i>Arabidopsis</i> <i>thalia</i><i>na</i> (<i>Arabidopsis</i>) genome was isolated, and fused GUS reporter gene. The resulting expression cassette was introduced into wild-type <i>Arabidopsis</i> through <i>Agrobacterium</i>-mediated transformation. The result demonstrated that <i>BOI</i> gene was expressed predominantly in leaves, siliques, young roots, and flowering tissues, indicating that <i>BOI </i>gene may be involved in multiple processes in plant growth and development in <i>Arabidopsis</i>. Besides, eight candidate interacting proteins were obtained from the <i>Arabidopsis</i> cDNA library via yeast two-hybrid technology, including EXO70E2 (AT5G61010), WRKY7 (AT4G24240), WRKY11 (AT4G31550), WRKY17 (AT2G24570), UBP20 (AT4G17895), L5 (AT1G12290), SAUR9 (AT4G36110) and TCP21 (AT5G08330). Functional analysis of these candidate interacting proteins manifested that they related to multiple pathways, including biological and abiotic stress, programmed cell death, protein degradation, material metabolism and transcriptional regulation. In addition, the results of the transient assay proclaimed that BOI protein affects the protein stability of EXO70E2 and L5 through its E3 ubiquitin ligase activity. Our results provide novel clues for a better understanding of molecular mechanisms underlying BOI-mediated regulations.
%K E3 Ubiquitin Ligases
%K Expression Pattern
%K Interaction Network
%K <i>Arabidopsis</i>
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=136574