D53 represses rice blast resistance by directly targeting phenylalanine ammonia lyases

作者：H. C. Ye, Qingqing Hou, Haitao Lv, Hui Shi, Duo Wang, Yujie Chen, Tangshuai Xu, Mei Wang, Min He, Junjie Yin, Xiang Lu, Yongyan Tang, Xiaobo Zhu, Lijuan Zou, Xuewei Chen, Jiayang Li, Bing Wang, Jing Wang · 发表于：Journal of Integrative Plant Biology · 年份：2024 · DOI：10.1111/jipb.13734 · 被引用次数：9 · 研究领域：Plant Parasitism and Resistance、Plant and animal studies、Plant Molecular Biology Research

Phytohormones play important roles in orchestrating plant immune responses to pathogen attacks. Strigolactones (SLs), a group of carotenoid-derived phytohormones, modulate diverse biological processes in plants, including shoot branching, plant height, root architecture, leaf senescence, seed germination of parasitic plants, and symbiosis of arbuscular mycorrhizal fungi (Burger and Chory, 2020). Recently, increasing evidence has indicated potential roles for SLs in regulating responses against biotic stresses, including defense responses against certain pathogenic fungi and bacteria in roots and leaves (Yi et al., 2023). dwarf53 (d53) is an SL-insensitive rice (Oryza sativa) mutant resulting from a gain-of-function allele of D53 that encodes a mutated protein resistant to SL-induced ubiquitination and degradation (Jiang et al., 2013; Zhou et al., 2013). D53 and its homologous proteins are key transcriptional repressors in SL signaling through interaction with transcription factors and repression of their transcriptional activation activities (Song et al., 2017). In Arabidopsis thaliana, the D53 homologs Suppressor of MAX2-Like 6/7/8 (SMXL6/7/8) and Suppressor of MAX2-1 (SMAX1) mediate SL and karrikin signaling, respectively. Both SMXL6/7/8 and SMAX1 can directly bind to their own promoters and function as autoregulated transcription factors (Wang et al., 2020; Xu et al., 2023). However, whether D53 and its homologs can function as transcription factors to regulate development...