Specific features of expression of aspartate aminotransferase genes in early development of some cyprinid fishes and their intergeneric F1 hybrids |
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Authors: | Andreeva A M |
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Institution: | Papanin Institute of Biology of Inland Watersybrids, Russian Academy of Sciences, Borok, Yaroslavl' oblast', 152742 Russia. aam@ibiw.yaroslavl.ru |
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Abstract: | Temporal parameters of expression of the aspartate aminotransferase gene Aat-1 parental alleles were studied in early development of intergeneric reciprocal F1 hybrids of the bream, roach, and blue bream. When the first AaT-1 expression was timed to the early stages (late blastula-gastrula), the gene parental alleles were activated asynchronously according to the maternal types (blue bream x roach hybrids). When the first Aat-1 expression was timed to later stages (yolk sac resorption), the parental alleles were activated synchronously (bream x roach, roach x bream, and roach x blue bream hybrids). The pattern of activation of embryonic genes is determined by the maternal environment and the influence of allele interactions is not excluded: Aat-f/Aat-sl (bream x roach, roach x bream, and roach x blue bream) and Aat-sl/Aat-med (blue bream x roach). |
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