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Molecular cloning, functional characterization and transcriptional regulation of a 9-lipoxygenase gene from olive.
Phytochemistry. 2012 Feb; 74:58-68.P

Abstract

A lipoxygenase (LOX) cDNA clone (Oep2LOX1) has been isolated from olive fruit (Olea europaea cv. Picual). The deduced amino acid sequence displayed significant similarity to known plant LOX1 sequences. Genomic Southern blot analysis suggests that only one copy of Oep2LOX1 is present in the olive genome. Linolenic acid was the preferred substrate for the recombinant Oep2LOX1, which produced almost exclusively 9-hydroperoxide when linolenic acid was used as substrate, whereas a mixture of 9- and 13-hydroperoxides in a ratio 4:1 was formed from linoleic acid. Expression levels were measured in different tissues of Picual and Arbequina cultivars, including the mesocarp and seed during development and ripening of olive fruit. The results showed that Oep2LOX1 transcript level is spatially and temporally regulated. Besides, the transcriptional regulation of the Oep2LOX1 gene in response to different abiotic stresses was also investigated. Temperature, light and wounding regulate Oep2LOX1 gene expression in olive fruit mesocarp. The physiological role of the Oep2LOX1 gene during olive fruit ripening and in the stress response is discussed.

Authors+Show Affiliations

Instituto de la Grasa, Avda. Padre García Tejero 4, 41012 Seville, Spain.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22169502

Citation

Padilla, María N., et al. "Molecular Cloning, Functional Characterization and Transcriptional Regulation of a 9-lipoxygenase Gene From Olive." Phytochemistry, vol. 74, 2012, pp. 58-68.
Padilla MN, Hernández ML, Sanz C, et al. Molecular cloning, functional characterization and transcriptional regulation of a 9-lipoxygenase gene from olive. Phytochemistry. 2012;74:58-68.
Padilla, M. N., Hernández, M. L., Sanz, C., & Martínez-Rivas, J. M. (2012). Molecular cloning, functional characterization and transcriptional regulation of a 9-lipoxygenase gene from olive. Phytochemistry, 74, 58-68. https://doi.org/10.1016/j.phytochem.2011.11.006
Padilla MN, et al. Molecular Cloning, Functional Characterization and Transcriptional Regulation of a 9-lipoxygenase Gene From Olive. Phytochemistry. 2012;74:58-68. PubMed PMID: 22169502.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molecular cloning, functional characterization and transcriptional regulation of a 9-lipoxygenase gene from olive. AU - Padilla,María N, AU - Hernández,M Luisa, AU - Sanz,Carlos, AU - Martínez-Rivas,José M, Y1 - 2011/12/09/ PY - 2011/08/01/received PY - 2011/10/14/revised PY - 2011/11/16/accepted PY - 2011/12/16/entrez PY - 2011/12/16/pubmed PY - 2012/6/22/medline SP - 58 EP - 68 JF - Phytochemistry JO - Phytochemistry VL - 74 N2 - A lipoxygenase (LOX) cDNA clone (Oep2LOX1) has been isolated from olive fruit (Olea europaea cv. Picual). The deduced amino acid sequence displayed significant similarity to known plant LOX1 sequences. Genomic Southern blot analysis suggests that only one copy of Oep2LOX1 is present in the olive genome. Linolenic acid was the preferred substrate for the recombinant Oep2LOX1, which produced almost exclusively 9-hydroperoxide when linolenic acid was used as substrate, whereas a mixture of 9- and 13-hydroperoxides in a ratio 4:1 was formed from linoleic acid. Expression levels were measured in different tissues of Picual and Arbequina cultivars, including the mesocarp and seed during development and ripening of olive fruit. The results showed that Oep2LOX1 transcript level is spatially and temporally regulated. Besides, the transcriptional regulation of the Oep2LOX1 gene in response to different abiotic stresses was also investigated. Temperature, light and wounding regulate Oep2LOX1 gene expression in olive fruit mesocarp. The physiological role of the Oep2LOX1 gene during olive fruit ripening and in the stress response is discussed. SN - 1873-3700 UR - https://www.unboundmedicine.com/medline/citation/22169502/Molecular_cloning_functional_characterization_and_transcriptional_regulation_of_a_9_lipoxygenase_gene_from_olive_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0031-9422(11)00492-4 DB - PRIME DP - Unbound Medicine ER -