Journal
BMC GENETICS
Volume 18, Issue -, Pages -Publisher
BIOMED CENTRAL LTD
DOI: 10.1186/s12863-017-0550-2
Keywords
Allotetraploid; Hox gene; polyploidization; pseudogenization
Categories
Funding
- National Natural Science Foundation of China [31210103918, 31430088, 31730098]
- earmarked fund for China Agriculture Research System [CARS-45]
- Natural Science Foundation of Hunan Province for Distinguished Young Scholars [2017JJ1022]
- Major Program of Educational Commission of Hunan Province [17A133]
- Cooperative Innovation Center of Engineering and New Products for Developmental Biology of Hunan Province [20134486]
- Construction Project of Key Discipline of Hunan Province
- Construction Project of Key Discipline of China
- Hunan Normal University Graduate Research Innovation Project [CX2017B184]
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Background: Allotetraploid F-1 hybrids (4nF(1)) (AABB, 4n = 148) were generated from the distant hybridization of Carassius auratus red var. (RCC) (AA, 2n = 100) (female) x Megalobrama amblycephala (BSB) (BB, 2n = 48) (male ). It has been reported that Hox gene clusters are highly conserved among plants and vertebrates. In this study, we investigated the genomic organization of Hox gene clusters in the allotetraploid F-1 hybrids and their parents to investigate the polyploidization process. Results: There were three copies of Hox genes in the 4nF(1) hybrids, two copies in RCC and one copy in BSB. In addition, obvious variation and pseudogenization were observed in some Hox genes from 4nF(1). Conclusion: Our results reveal the influence of polyploidization on the organization and evolution of Hox gene clusters in fish and also clarify some aspects of vertebrate genome evolution.
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