Three related receptor-like kinases are required for optimal cell elongation in Arabidopsis thaliana.

ABSTRACT: Cell elongation in plants is controlled by environmental cues such as light and internal growth regulators including plant steroid hormones, brassinosteroids (BRs). In this study, we found that 3 related receptor-like kinases (RLKs), HERCULES1, THESEUS1, and FERONIA, are transcriptionally induced by BRs and are down-regulated in the loss-of-function BR mutant bri1 and up-regulated in the constitutive BR-response mutant bes1-D. These RLKs belong to the CrRLK family that has 17 members in Arabidopsis. We hypothesize that these RLKs are involved in BR-regulated processes. Although 2 of the RLKs were recently found to mediate male-female interaction during pollen tube reception (FERONIA) and to sense cell wall integrity (THESEUS1), our genetic studies demonstrated that they are required for ce

SUBMITTER: Guo H 

PROVIDER: S-EPMC2678668 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature