Abstract
The novel BrRZFPs genes encoding C3HC4-type RING zinc finger protein were identified from FOX (full length cDNA over-expressing) library of Brassica rapa. Ten full-length cDNAs obtained from the library encode zinc-finger protein containing 346 amino acids, designated BrRZFPs. These genes were classified into four groups by phylogenic analysis showing conserved protein sequences at both termini. The tissue distribution of BrRZFPs transcription was examined by qRT-PCR revealing ubiquitous expression pattern. However, each gene was strongly expressed in the specific tissue. Transcriptional analysis showed that those acquired 10 genes were inducible under abiotic stresses. Likewise, the transcript of BrRZFP3 was strongly induced (~12-folds) by exogenous abscisic acid, whereas the transcripts of BrRZFP1, BrRZFP2 and BrRZFP3 were (> 9-folds) induced by cold. We suggest that these BrRZFPs that function as signal or response to abiotic stress are useful for crop improvement.
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