| Ascorbate peroxidase gene family in tomato: its identification and characterization. | |
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MedLine Citation:
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PMID: 18026995 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The antioxidative response, where ascorbate peroxidase (APX) is a key enzyme, is an integral part of the plant tolerance response to environmental stresses. As a first step towards the study of the physiological role and the regulation of the members of the Apx gene family, the orthologs of the stress-sensitive cultivated tomato Solanum lycopersicum cv. M82 (Slm) and of the wild salt-tolerant species S. pennellii acc. Atico (Spa) were identified by utilizing the tomato EST database, and characterized. A redundant list of 16 virtual Apx transcripts and four singleton ESTs was shown to correspond to seven genuine Apx genes. The complete tomato Apx gene family is comprised of genes encoding three cytosolic, two peroxisomal, and two chloroplastic APXs. These genes attained differential regulatory patterns in various Slm organs. More detailed study of Apx1 and Apx2 genes, that are the products of a recent gene duplication event, shows that they have already attained differential regulation within and between Slm and Spa under control and stress conditions. It is also suggested that due to lineage-specific gene duplication and lose events, intricate phylogenetic relationships exist among the members of the Apx gene families. |
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Authors:
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Naim Najami; Tibor Janda; Waseim Barriah; Galya Kayam; Moshe Tal; Micha Guy; Micha Volokita |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-11-20 |
Journal Detail:
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Title: Molecular genetics and genomics : MGG Volume: 279 ISSN: 1617-4615 ISO Abbreviation: Mol. Genet. Genomics Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-01-11 Completed Date: 2008-04-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101093320 Medline TA: Mol Genet Genomics Country: Germany |
Other Details:
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Languages: eng Pagination: 171-82 Citation Subset: IM |
Affiliation:
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Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Amino Acid Sequence Chromosome Mapping Chromosomes, Plant / genetics Cloning, Molecular DNA, Plant / chemistry, genetics Exons Gene Expression Regulation, Enzymologic Gene Expression Regulation, Plant Introns Isoenzymes / genetics Lycopersicon esculentum / enzymology, genetics* Molecular Sequence Data Multigene Family* Peroxidases / genetics* Plant Proteins / genetics* RNA, Messenger / genetics, metabolism Reverse Transcriptase Polymerase Chain Reaction Sequence Analysis, DNA Sequence Homology, Amino Acid |
| Chemical | |
Reg. No./Substance:
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0/DNA, Plant; 0/Isoenzymes; 0/Plant Proteins; 0/RNA, Messenger; EC 1.11.1.-/Peroxidases; EC 1.11.1.11/ascorbate peroxidase |
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