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8 matches found in 5 documents. Search time: 0.168 seconds.
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Score: 3.00
Title: A novel cis-element that is responsive to oxidative stress regulates three antioxidant defense genes in rice .
Author: Tsukamoto S Morita S Hirano E Yokoi H Masumura T Tanaka K
Journal: Plant Physiol . Citation: V : 137 ( 1 ) P : 317-27 Year: 2005 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub15618434 Accession (PMID): 15618434
Abstract: All organisms have defense systems against oxidative stress that include multiple genes of antioxidant defense . These genes are induced by reactive oxygen species under condition of oxidative stress . In this study , we found that a 28-bp motif is conserved on the promoter regions of three antioxidant defense genes in rice ( Oryza sativa ) : cytosolic superoxide dismutase ( sodCc1 ) , cytosolic thioredoxin ( trxh ) , and glutaredoxin ( grx ) . We demonstrated that the 28-bp sequence acts as a cis-element responsive to oxidative stress by transient expression assay and designated it as CORE ( coordinate regulatory element for antioxidant defense ) . The CORE was activated by methyl viologen treatment and induced a 3 . 1-fold increase in expression of the reporter gene , but it did not respond to hydrogen peroxide . The expressions of the sodCc1 , trxh , and grx genes were coordinately induced by methyl viologen , suggesting that multiple genes involved in antioxidant defense are controlled by a common regulatory mechanism via CORE . Application of the mitogen-activated protein kinase kinase inhibitor caused the constitutive induction of the sodCc1 , trxh , and grx genes and the activation of CORE without methyl viologen treatment . These results indicate that a mitogen-activated protein kinase cascade is involved in the gene regulation mediated by CORE .
Matching Sentences:
[ Sen. 3, subscore: 1.00 ]: In this study , we found that a 28-bp motif is conserved on the promoter regions of three antioxidant defense genes in rice ( Oryza sativa ) : cytosolic superoxide dismutase ( sodCc1 ) , cytosolic thioredoxin ( trxh ) , and glutaredoxin ( grx ) .
[ Sen. 6, subscore: 1.00 ]: The expressions of the sodCc1 , trxh , and grx genes were coordinately induced by methyl viologen , suggesting that multiple genes involved in antioxidant defense are controlled by a common regulatory mechanism via CORE .
[ Sen. 7, subscore: 1.00 ]: Application of the mitogen-activated protein kinase kinase inhibitor caused the constitutive induction of the sodCc1 , trxh , and grx genes and the activation of CORE without methyl viologen treatment .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 2.00
Title: Differential gene expressions of rice superoxide dismutase isoforms to oxidative and environmental stresses .
Author: Kaminaka H Morita S Tokumoto M Masumura T Tanaka K
Journal: Free Radic . Res . Citation: V : 31 Suppl ( ) P : S219-25 Year: 1999 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub10694063 Accession (PMID): 10694063
Abstract: Active oxygen species ( AOSs ) are produced under stress conditions of plant cells . Superoxide dismutase ( SOD ) catalyzes the first step in the AOS scavenging system . The responses of SOD genes to environmental stresses were analyzed in rice seedlings by the treatments of drought , salinity and chilling . The expressions of abscisic acid ( ABA ) -inducible genes , Mn-SOD gene ( sodA1 ) and one of the cytosolic Cu/Zn-SOD genes ( sodCc2 ) , were strongly induced by the treatment of drought and salinity . While Fe-SOD gene ( sodB ) and the other cytosolic Cu/Zn-SOD gene ( sodCc1 ) were also induced by ABA . However the mRNA level of sodB was decreased by drought treatment , and sodCc1 gene was not induced by drought and salinity treatments . Plastidic Cu/Zn-SOD gene ( sodCp ) quickly responded to salinity treatment in the light but not in the dark . In the treatment with hydrogen peroxide , sodCp gene was strongly induced shortly after the treatment . These results suggested that phytohormone and AOSs are associated with the regulation of SOD genes under environmental stresses .
Matching Sentences:
[ Sen. 5, subscore: 1.00 ]: While Fe-SOD gene ( sodB ) and the other cytosolic Cu/Zn-SOD gene ( sodCc1 ) were also induced by ABA .
[ Sen. 6, subscore: 1.00 ]: However the mRNA level of sodB was decreased by drought treatment , and sodCc1 gene was not induced by drought and salinity treatments .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: Structure and differential response to abscisic acid of two promoters for the cytosolic copper/zinc-superoxide dismutase genes , SodCc1 and SodCc2 , in rice protoplasts .
Author: Sakamoto A Okumura T Kaminaka H Sumi K Tanaka K
Journal: FEBS Lett . Citation: V : 358 ( 1 ) P : 62-6 Year: 1995 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub7821431 Accession (PMID): 7821431
Abstract: We determined the 5-flanking sequences of two nuclear genes ( SodCc1 and SodCc2 ) encoding cytosolic copper/zinc-superoxide dismutase in rice ( Oryza sativa L ) . Utilizing transient beta-glucuronidase ( GUS ) reporter assays , functional promoter-GUS analysis was performed in rice protoplasts exposed to the phytohormone abscisic acid ( ABA ) or the antioxidant sulfhydryl reagent , dithiothreitol ( DTT ) . Transcriptional activities from both SodCc-GUS fusions were stimulated by DTT , which induces the promoter activity of the tobacco SodCc gene [ Proc . Natl . Acad . Sci . USA 90 ( 1993 ) 3108-3112 ] . ABA had no effect on SodCcl-GUS expression but specifically induced the gene expression of the SodCc2-GUS fusion . The simultaneous application of ABA and gibberellin A3 , however , abolished the enhancing effect of ABA . These results indicated that two rice SodCc promoters differentially respond to externally supplied ABA and that one of the regulatory factors for plant SodCc expression is ABA in addition to cellular redox-modulating antioxidants .
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: We determined the 5-flanking sequences of two nuclear genes ( SodCc1 and SodCc2 ) encoding cytosolic copper/zinc-superoxide dismutase in rice ( Oryza sativa L ) .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: Molecular cloning of the gene ( SodCc1 ) that encodes a cytosolic copper/zinc-superoxide dismutase from rice ( Oryza sativa L ) .
Author: Sakamoto A Okumura T Kaminaka H Tanaka K
Journal: Plant Physiol . Citation: V : 107 ( 2 ) P : 651-2 Year: 1995 Type: ARTICLE
Literature: oryza Field: title Doc ID: pub7724677 Accession (PMID): 7724677
Abstract:
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: Molecular cloning of the gene ( SodCc1 ) that encodes a cytosolic copper/zinc-superoxide dismutase from rice ( Oryza sativa L ) .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: Structure and differential response to abscisic acid of two promoters for the cytosolic copper/zinc-superoxide dismutase genes , SodCc1 and SodCc2 , in rice protoplasts .
Author: Sakamoto A Okumura T Kaminaka H Sumi K Tanaka K
Journal: FEBS Lett . Citation: V : 358 ( 1 ) P : 62-6 Year: 1995 Type: ARTICLE
Literature: oryza Field: title Doc ID: pub7821431 Accession (PMID): 7821431
Abstract: We determined the 5-flanking sequences of two nuclear genes ( SodCc1 and SodCc2 ) encoding cytosolic copper/zinc-superoxide dismutase in rice ( Oryza sativa L ) . Utilizing transient beta-glucuronidase ( GUS ) reporter assays , functional promoter-GUS analysis was performed in rice protoplasts exposed to the phytohormone abscisic acid ( ABA ) or the antioxidant sulfhydryl reagent , dithiothreitol ( DTT ) . Transcriptional activities from both SodCc-GUS fusions were stimulated by DTT , which induces the promoter activity of the tobacco SodCc gene [ Proc . Natl . Acad . Sci . USA 90 ( 1993 ) 3108-3112 ] . ABA had no effect on SodCcl-GUS expression but specifically induced the gene expression of the SodCc2-GUS fusion . The simultaneous application of ABA and gibberellin A3 , however , abolished the enhancing effect of ABA . These results indicated that two rice SodCc promoters differentially respond to externally supplied ABA and that one of the regulatory factors for plant SodCc expression is ABA in addition to cellular redox-modulating antioxidants .
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: Structure and differential response to abscisic acid of two promoters for the cytosolic copper/zinc-superoxide dismutase genes , SodCc1 and SodCc2 , in rice protoplasts .
Supplemental links/files: reference in endnote online text related articles pubmed citation
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