Arabidopsis AGC protein kinases IREH1 and IRE3 control root skewing

Publication date: Available online 22 March 2019Source: Journal of Genetics and GenomicsAuthor(s): Xiaozhen Yue, Zhiai Guo, Teng Shi, Lizhen Song, Youfa ChengAbstractAGC protein kinases play important roles in plant growth and development. Several AGC kinases in Arabidopsis have been functionally characterized. However, the “AGC Other” subfamily, including IRE, IREH1, IRE3 and IRE4, has not been well understood. Here, we reported that ireh1 mutants displayed a root skewing phenotype, which can be enhanced by ire3 mutation. IREH1 and IRE3 were expressed in roots, consistent with their function in controlling root skewing. The florescence intensities of the microtubule marker KNpro::EGFP-MBD were decreased in ireh1, ire3 and ireh1 ire3 mutants compared to wild type. The microtubule arrangements in ireh1 and ireh1 ire3 mutants were also altered. IREH1 physically interacted with IRE3 in vitro and in planta. Thus, our findings demonstrate that IREH1 and IRE3 protein kinases play important roles in controlling root skewing, and maintaining microtubule network in Arabidopsis.
Source: Journal of Genetics and Genomics - Category: Genetics & Stem Cells Source Type: research