Document Detail

Molecular characterization of the Brassica rapa auxin-repressed, superfamily genes, BrARP1 and BrDRM1.
MedLine Citation:
PMID:  23065269     Owner:  NLM     Status:  Publisher    
Two auxin-repressed superfamily genes, auxin-repressed protein 1 (ARP1) and dormancy-associated protein 1 (DRM1), are highly expressed in both the dormant buds and non-growing tissues of several plant species. To further identify the function of these proteins in Chinese cabbage (Brassica rapa L. ssp. pekinensis), we examined comprehensive expression patterns of BrARP1 and BrDRM1 under various developmental and stress conditions. We also examined these same genes in transgenic Arabidopsis plants. Both genes were expressed in all tissues tested, but their levels were highest in mature tissues accompanied by low levels of the growth-associated marker, B. rapa ribosomal protein 27. Expression of both genes was induced by abiotic stresses, such as chilling, heat shock, and salt treatment. Overexpression of either BrARP1 or BrDRM1 in Arabidopsis causes a reduction in vegetative growth and seed productivity, without affecting morphology. The lengths of petioles and siliques were greatly reduced. Simultaneous expression of both genes showed an additive effect on the growth suppression, resulting in significant reduction in plant size. Knock-out of Arabidopsis ARP1, DRM1, or both, neither affected growth rate nor final size. Results suggest BrARP1 and BrDRM1 are either involved in growth arrest, or stop growth, possibly from inhibition of either cell elongation or cell expansion, thereby creating a "growth brake".
Jeongyeo Lee; Ching-Tack Han; Yoonkang Hur
Related Documents :
25266499 - Genome-wide characterization, expression and functional analysis of clv3/esr gene famil...
24247459 - Duplicated phosphoglucose isomerase genes in avocado.
23296809 - Gene-expression phenotypes for lipid metabolism and intramuscular fat in skeletal muscl...
23666989 - Molecular genetics an important tool in elucidating the molecular mechanisms underlying...
25349089 - Isolation and expression of enolase gene in fusarium oxysporum f. sp. lycopersici.
23074679 - A de novo whole gck gene deletion not detected by gene sequencing, in a boy with phenot...
20045079 - Functional characterization of lysophosphatidic acid phosphatase from arabidopsis thali...
15735689 - Aneurysmal bone cyst variant translocations upregulate usp6 transcription by promoter s...
9811459 - Aml1(-/-) embryos do not express certain hematopoiesis-related gene transcripts includi...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-14
Journal Detail:
Title:  Molecular biology reports     Volume:  -     ISSN:  1573-4978     ISO Abbreviation:  Mol. Biol. Rep.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0403234     Medline TA:  Mol Biol Rep     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Biology, College of Biological Sciences, Chungnam National University, Daejeon, 305-764, South Korea,
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Genetic and environmental factors in human osteoporosis.
Next Document:  Novel single nucleotide polymorphisms of bovine SREBP1 gene is association with fatty acid compositi...