Cloning and molecular characterization of a flavin-dependent oxidoreductase gene from barley
Abstract Oxophytodienoate reductases (OPRs) are a small group of flavin-dependent oxidoreductases in plants. In this study, a new member of the OPR gene family (HvOPR2) was cloned from barley (Hordeum vulgare L.) using reverse transcription polymerase chain reaction (RT-PCR). The full-length cDNA of HvOPR2 was 1,206 bp with an open reading frame of 1,101 bp, encoding a 366 amino acids long polypeptide with a predicted molecular weight of 40.52 and a theoretical isoelectric point of 6.21. The corresponding genomic clone of HvOPR2 was isolated using the PCR amplification technique and was found to consist of five exons and four introns. Bioinformatic analysis revealed that the deduced HvOPR2 has a considerable homology with other plant OPRs and possessed the flavin oxidoreductase/NADH oxidase substrate-binding domain. Phylogenetic analysis showed that HvOPR2 codes for the OPR of subgroup I, which contains enzymes that are not required for jasmonic acid biosynthesis. Time-course transcriptional profiling of HvOPR2 was analyzed in response to a variety of abiotic stresses and hormonal treatments by semi-quantitative RT-PCR. The HvOPR2 gene was induced in response to drought, hydrogen peroxide, and wounding. Moreover, the corresponding mRNA transcripts were increased in response to jasmonic acid and salicylic acid, but not in response to abscisic acid. These results strongly suggested a role for HvOPR2 in barley defense/response to abiotic stresses and signaling molecules..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2014 |
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| Erschienen: |
2014 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:55 |
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| Enthalten in: |
Journal of applied genetics - 55(2014), 4 vom: 25. Juni, Seite 457-468 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Al-Momany, Bayan [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
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| Anmerkungen: |
© Institute of Plant Genetics, Polish Academy of Sciences, Poznan 2014 |
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| doi: |
10.1007/s13353-014-0227-8 |
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| 520 | |a Abstract Oxophytodienoate reductases (OPRs) are a small group of flavin-dependent oxidoreductases in plants. In this study, a new member of the OPR gene family (HvOPR2) was cloned from barley (Hordeum vulgare L.) using reverse transcription polymerase chain reaction (RT-PCR). The full-length cDNA of HvOPR2 was 1,206 bp with an open reading frame of 1,101 bp, encoding a 366 amino acids long polypeptide with a predicted molecular weight of 40.52 and a theoretical isoelectric point of 6.21. The corresponding genomic clone of HvOPR2 was isolated using the PCR amplification technique and was found to consist of five exons and four introns. Bioinformatic analysis revealed that the deduced HvOPR2 has a considerable homology with other plant OPRs and possessed the flavin oxidoreductase/NADH oxidase substrate-binding domain. Phylogenetic analysis showed that HvOPR2 codes for the OPR of subgroup I, which contains enzymes that are not required for jasmonic acid biosynthesis. Time-course transcriptional profiling of HvOPR2 was analyzed in response to a variety of abiotic stresses and hormonal treatments by semi-quantitative RT-PCR. The HvOPR2 gene was induced in response to drought, hydrogen peroxide, and wounding. Moreover, the corresponding mRNA transcripts were increased in response to jasmonic acid and salicylic acid, but not in response to abscisic acid. These results strongly suggested a role for HvOPR2 in barley defense/response to abiotic stresses and signaling molecules. | ||
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