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Int. J. Mol. Sci. 2012, 13(2), 2481-2500; doi:10.3390/ijms13022481
Article

The Expression Profiling of the Lipoxygenase (LOX) Family Genes During Fruit Development, Abiotic Stress and Hormonal Treatments in Cucumber (Cucumis sativus L.)

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Received: 23 December 2011 / Revised: 8 February 2012 / Accepted: 15 February 2012 / Published: 22 February 2012
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

Lipoxygenases (LOXs) are non-haem iron-containing dioxygenases that catalyse oxygenation of polyunsaturated fatty acids and lipids to initiate the formation of a group of biologically active compounds called oxylipins. Plant oxylipins play important and diverse functions in the cells. In the current study, expression analysis during cucumber development using semi-quantitative RT-PCR revealed that 13 of 23 CsLOX genes were detectable, and were tissue specific or preferential accumulation. In total, 12 genes were found to be differentially expressed during fruit development and have different patterns of expression in exocarp, endocarp and pulp at day 5 after anthesis. The expression analysis of these 12 cucumber LOX genes in response to abiotic stresses and plant growth regulator treatments revealed their differential transcript in response to more than one treatment, indicating their diverse functions in abiotic stress and hormone responses. Results suggest that in cucumber the expanded LOX genes may play more diverse roles in life cycle and comprehensive data generated will be helpful in conducting functional genomic studies to understand their precise roles in cucumber fruit development and stress responses.
Keywords: lipoxygenase; cucumber; fruit development; abiotic stress; plant growth regulator lipoxygenase; cucumber; fruit development; abiotic stress; plant growth regulator
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yang, X.-Y.; Jiang, W.-J.; Yu, H.-J. The Expression Profiling of the Lipoxygenase (LOX) Family Genes During Fruit Development, Abiotic Stress and Hormonal Treatments in Cucumber (Cucumis sativus L.). Int. J. Mol. Sci. 2012, 13, 2481-2500.

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