Improved Procedure for Induction of the Androgenetic Doubled Haploids in Zebrafish

Androgenesis is useful for induction of doubled haploids from male genetic resources and contributes to the restoration of individuals from cryopreserved sperm. Here, we determined the suitable conditions for egg in vitro preservation and the suitable dose of UV irradiation for genetic inactivation...

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Veröffentlicht in:Zebrafish 2018-02, Vol.15 (1), p.33-44
Hauptverfasser: Endoh, Mitsuru, Fujimoto, Takafumi, Yamaha, Etsuro, Arai, Katsutoshi
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container_issue 1
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container_title Zebrafish
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creator Endoh, Mitsuru
Fujimoto, Takafumi
Yamaha, Etsuro
Arai, Katsutoshi
description Androgenesis is useful for induction of doubled haploids from male genetic resources and contributes to the restoration of individuals from cryopreserved sperm. Here, we determined the suitable conditions for egg in vitro preservation and the suitable dose of UV irradiation for genetic inactivation of the egg nucleus, and established an improved procedure for induction of androgenetic-doubled haploids in zebrafish. The suitable solution for egg preservation was evaluated by the fertilization rate using different types of solutions or conditions. Hank's solution with 0.5% bovine serum albumin (pH8.0) was suitable for the preservation of zebrafish eggs. In addition, we discovered an improvement of fertilization rates by temporal preservation of ovulated eggs in the suitable solution. UV irradiation of eggs at 50–75 mJ/cm 2 induced haploid embryos. Microsatellite genotyping using eight loci revealed the paternity and homozygosity of the putative androgenetic doubled haploids. The yield rate of androgenetic doubled haploids, which were induced by UV irradiation and heat shock, ranged from 0.4% to 10.7%.
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subjects Androgenesis
Animal embryos
Biological fertilization
Bovine serum albumin
Cryopreservation
Danio rerio
Deactivation
Eggs
Embryos
Fertilization
Freshwater fishes
Genetic resources
Genotyping
Haploidy
Heat shock
Homozygosity
Inactivation
Irradiation
Microsatellites
Nuclei
Nucleus
Original Articles
Paternity
Radiation dosage
Restoration
Serum
Serum albumin
Solutions
Spermatozoa
Ultraviolet radiation
Yields
Zebrafish
title Improved Procedure for Induction of the Androgenetic Doubled Haploids in Zebrafish
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