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Score: 1.00
Title: OsSFR6 is a functional rice orthologue of SENSITIVE TO FREEZING-6 and can act as a regulator of COR gene expression , osmotic stress and freezing tolerance in Arabidopsis .
Author: Wathugala DL Richards SA Knight H Knight MR
Journal: New Phytol Citation: V : 191 P : 984-95 Year: 2011 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub21585388 Accession (PMID): 21585388
Abstract: The Arabidopsis protein SENSITIVE TO FREEZING-6 ( AtSFR6 ) is required for cold and drought-inducible expression of COLD-ON REGULATED ( COR ) genes and , as a consequence , AtSFR6 is essential for osmotic stress and freezing tolerance in Arabidopsis . Therefore , orthologues of AtSFR6 in crop species represent important candidate targets for future manipulation of stress tolerance . We identified and cloned a homologue of AtSFR6 from rice ( Oryza sativa ) , OsSFR6 , and confirmed its orthology in Arabidopsis . OsSFR6 was identified by homology searches , and a full-length coding region isolated using reverse transcription polymerase chain reaction ( RT-PCR ) from Oryza sativa cDNA . To test for orthology , OsSFR6 was expressed in an Arabidopsis sfr6 loss-of-function mutant background , and restoration of wild-type phenotypes was assessed . Searching the rice genome revealed a single homologue of AtSFR6 . Cloning and sequencing the OsSFR6 coding region showed OsSFR6 to have 61 . 7% identity and 71 . 1% similarity to AtSFR6 at the predicted protein sequence level . Expression of OsSFR6 in the atsfr6 mutant background restored the wild-type visible phenotype , as well as restoring wild-type levels of COR gene expression and tolerance of osmotic and freezing stresses . OsSFR6 is an orthologue of AtSFR6 , and thus a target for future manipulation to improve tolerance to osmotic and other abiotic stresses .
Matching Sentences: [ Sen. 5, subscore: 1.00 ]: To test for orthology , OsSFR6 was expressed in an Arabidopsis sfr6 loss-of-function mutant background , and restoration of wild-type phenotypes was assessed .
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