The ROOT HAIRLESS 1 gene encodes a nuclear protein required for root hair initiation in Arabidopsis.

ABSTRACT: The epidermis of Arabidopsis wild-type primary roots, in which some cells grow hairs and others remain hairless in a position-dependent manner, has become an established model system to study cell differentiation. Here we present a molecular analysis of the RHL1 (ROOT HAIRLESS 1) gene that, if mutated, prevents the formation of hairs on primary roots and causes a seedling lethal phenotype. We have cloned the RHL1 gene by use of a T-DNA-tagged mutant and found that it encodes a protein that appears to be plant specific. The predicted RHL1 gene product is a small hydrophilic protein (38.9 kD) containing putative nuclear localization signals and shows no significant homology to any known amino acid sequence. We demonstrate that a 78-amino-acid sequence at its amino terminus is capable of dire

SUBMITTER: Schneider K 

PROVIDER: S-EPMC316963 | biostudies-literature | 1998 Jul

REPOSITORIES: biostudies-literature