Transcript profiling of crown rootless1 mutant stem base reveals new elements associated with crown root development in rice.

ABSTRACT:

Background

In rice, the major part of the post-embryonic root system is made of stem-derived roots named crown roots (CR). Among the few characterized rice mutants affected in root development, crown rootless1 mutant is unable to initiate crown root primordia. CROWN ROOTLESS1 (CRL1) is induced by auxin and encodes an AS2/LOB-domain transcription factor that acts upstream of the gene regulatory network controlling CR development.

Results

To identify genes involved in CR development, we compared global gene expression profile in stem bases of crl1 mutant and wild-type (WT) plants. Our analysis revealed that 250 and 236 genes are down- and up-regulated respectively in the crl1 mutant. Auxin induces CRL1 expression and consequently it is expected that auxin also alters the expre

SUBMITTER: Coudert Y 

PROVIDER: S-EPMC3163228 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature