Ectopic Expression of OsJAZs Alters Plant Defense and Development.


A key step in jasmonic acid (JA) signaling is the ligand-dependent assembly of a coreceptor complex comprising the F-box protein COI1 and JAZ transcriptional repressors. The assembly of this receptor complex results in proteasome-mediated degradation of JAZ repressors, which in turn bind and repress MYC transcription factors. Many studies on JAZs have been performed in Arabidopsis thaliana, but the function of JAZs in rice is largely unknown. To systematically reveal the function of OsJAZs, in this study, we compared the various phenotypes resulting from 13 OsJAZs via ectopic expression in Arabidopsis thaliana and the phenotypes of 12 AtJAZs overexpression (OE) lines. Phylogenetic analysis showed that the 25 proteins could be divided into three major groups. Yeast two-hybrid (Y2H) assays revealed that most OsJAZ proteins could form homodimers or heterodimers. The statistical results showed that the phenotypes of the OsJAZ OE plants were quite different from those of AtJAZ OE plants in terms of plant growth, development, and immunity. As an example, compared with other JAZ OE plants, OsJAZ11 OE plants exhibited a JA-insensitive phenotype and enhanced resistance to Pst DC3000. The protein stability after JA treatment of OsJAZ11 emphasized the specific function of the protein. This study aimed to explore the commonalities and characteristics of different JAZ proteins functions from a genetic perspective, and to screen genes with disease resistance value. Overall, the results of this study provide insights for further functional analysis of rice JAZ family proteins.





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Publication Info

Sun, Baolong, Luyue Shang, Yang Li, Qiang Zhang, Zhaohui Chu, Shengyang He, Wei Yang, Xinhua Ding, et al. (2022). Ectopic Expression of OsJAZs Alters Plant Defense and Development. International journal of molecular sciences, 23(9). p. 4581. 10.3390/ijms23094581 Retrieved from

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Sheng-Yang He

Benjamin E. Powell Distinguished Professor of Biology

Interested in the fascinating world of plants, microbes or inter-organismal communication and co-evolution? Please contact Prof. Sheng-Yang He (;

Millions of years of co-evolution between plants and microbes have resulted in an intricate web of attack, counter-attack, decoy, and hijacking mechanisms in biology. Moreover, co-evolution between plants and microbes is greatly impacted by ongoing climate change. In our lab, we probe “host-microbe-climate” interactions to answer the following fundamental questions: (1) How do microbial pathogens infect a susceptible host? (2) How do plants select beneficial microbiomes to ensure health? (3) How do climate conditions impact disease and immunity?      

We use contemporary methods to address these questions, including those commonly used in molecular genetics, genomics, biochemistry, cell biology, bioinformatics, microbiology, plant biology, co-evolution and infectious disease biology.    

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