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Gene duplication and an accelerated evolutionary rate in 11S globulin genes are associated with higher protein synthesis in dicots as compared to monocots

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Li, C., Li, M., Dunwell, J. and Zhang, Y.-M. (2012) Gene duplication and an accelerated evolutionary rate in 11S globulin genes are associated with higher protein synthesis in dicots as compared to monocots. BMC Evolutionary Biology, 12 (15). ISSN 1471-2148

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To link to this article DOI: 10.1186/1471-2148-12-15

Abstract/Summary

Background: Seed storage proteins are a major source of dietary protein, and the content of such proteins determines both the quantity and quality of crop yield. Significantly, examination of the protein content in the seeds of crop plants shows a distinct difference between monocots and dicots. Thus, it is expected that there are different evolutionary patterns in the genes underlying protein synthesis in the seeds of these two groups of plants. Results: Gene duplication, evolutionary rate and positive selection of a major gene family of seed storage proteins (the 11S globulin genes), were compared in dicots and monocots. The results, obtained from five species in each group, show more gene duplications, a higher evolutionary rate and positive selections of this gene family in dicots, which are rich in 11S globulins, but not in the monocots. Conclusion: Our findings provide evidence to support the suggestion that gene duplication and an accelerated evolutionary rate may be associated with higher protein synthesis in dicots as compared to monocots.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Biological Sciences > Environmental Biology
Interdisciplinary centres and themes > Centre for Food Security
ID Code:26292
Uncontrolled Keywords:11S globulin, dicot, evolutionary rate, gene duplication, legumins, monocot, positive selection.
Publisher:BioMed Central Ltd

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