Differential regulation of jasmonate responses in multiple jaz mutants.

Yue Zhang, Bei Liu, Jiaqi Zhai, Qinglei Wang, Susheng Song

Plant signaling & behavior 2022 Dec 31

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The phytohormones jasmonates (JAs) regulate diverse aspects of plant growth and defense responses. The JA-ZIM domain (JAZ) family of repressors are targeted by the JA receptor Coronatine Insensitive 1 for ubiquitination and subsequent degradation via the 26S proteasome. We previously investigated the functions of JAZs in JA responses by analyzing jaz mutants of the phylogenetic group I (jaz1/2/5/6), group II/III (jaz10/11/12), group IV/V (jaz3/4/7/9 and jaz3/4/7/8/9), and their high-order mutant jaz1/2/3/4/5/6/7/9/10/11/12. Here, we examined JA-regulated root growth, apical hook curvature, flowering time, and defense against the insect Spodoptera exigua in the intermediate jaz mutants jaz1/2/5/6/10/11/12, jaz1/2/3/4/5/6/7/9, and jaz3/4/7/8/9/10/11/12. This study shows that these jaz mutants differentially affect JA responses, suggesting the complexity of JA pathway in these multiple jaz mutants.

Citation

Yue Zhang, Bei Liu, Jiaqi Zhai, Qinglei Wang, Susheng Song. Differential regulation of jasmonate responses in multiple jaz mutants. Plant signaling & behavior. 2022 Dec 31;17(1):1997240