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Genes 2018, 9(12), 611;

Evolution and Expression Divergence of the CYP78A Subfamily Genes in Soybean

Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
University of Chinese Academy of Sciences, Beijing 100049, China
Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
Author to whom correspondence should be addressed.
Received: 31 October 2018 / Revised: 23 November 2018 / Accepted: 27 November 2018 / Published: 7 December 2018
(This article belongs to the Section Plant Genetics and Genomics)
PDF [3774 KB, uploaded 11 December 2018]


Gene expression divergence is an important evolutionary driving force for the retention of duplicate genes. In this study, we identified three CYP78A subfamily genes in soybean, GmCYP78A70, GmCYP78A57 and GmCYP78A72, which experienced different duplication events. GmCYP78A70 was mainly expressed in leaf tissue and the vegetative phase, whereas GmCYP78A57 was mainly expressed in floral tissue and seed, i.e., the reproductive phase. Expression of GmCYP78A72 could be detected in all the tissues and phases mentioned above. The expression levels of GmCYP78A70 and GmCYP78A57 in different soybean cultivars showed positive correlations with leaf size and 100-seed weight, respectively. The population genetics analysis indicated that the three genes had experienced different selective pressures during domestication and improved breeding of soybean. Deciphering the function of this subfamily of genes may well prove useful to breeders for improving soybean’s agronomic traits.
Keywords: soybean; duplicate genes; evolution; GmCYP78As; leaf size; seed size soybean; duplicate genes; evolution; GmCYP78As; leaf size; seed size
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 (CC BY 4.0).

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Dai, A.-H.; Yang, S.-X.; Zhou, H.-K.; Tang, K.-Q.; Li, G.; Leng, J.-T.; Yu, H.; Zhang, Y.-H.; Gao, J.-S.; Yang, X.; Guo, Y.-J.; Jiang, N.; Feng, X.-Z. Evolution and Expression Divergence of the CYP78A Subfamily Genes in Soybean. Genes 2018, 9, 611.

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