Identification of Mx gene nucleotide dimorphism (G/A) as genetic marker for antiviral activity in Egyptian chickens

Identification of Mx gene nucleotide dimorphism (G/A) as genetic marker for antiviral activity in Egyptian chickens

Egyptian chickens, representing 2 breeds and 7 strains, were genotyped using the PCR-RFLP and sequencing techniques for detection of a non-synonymous dimorphism (G/A) in exon 14 of chicken Myxovirus resistance (Mx) gene. This dimorphic position is responsible for altering Mx protein’s antiviral acti...

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Bibliographic Details
Published in:Journal of Genetic Engineering and Biotechnology Vol. 16; no. 1; pp. 83 - 88
Main Authors: Hassanane, Mohamed S., Hassan, Amal A.M., Ahmed, Fatma M., El-Komy, Esteftah M., Roushdy, Khaled M., Hassan, Nagwa A.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-06-2018
Academy of Scientific Research and Technology, Egypt
Elsevier
Subjects:
Animal Biotechnology
Antiviral activity
Egyptian chickens
Genotyping
Mx gene
PCR-RFLP
Mx gene
PCR-RFLP
Genotyping
Egyptian chickens
Antiviral activity
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Summary:Egyptian chickens, representing 2 breeds and 7 strains, were genotyped using the PCR-RFLP and sequencing techniques for detection of a non-synonymous dimorphism (G/A) in exon 14 of chicken Myxovirus resistance (Mx) gene. This dimorphic position is responsible for altering Mx protein’s antiviral activity. Polymerase Chain reactions were performed using Egyptian chickens DNA and specific primer set to amplify Mx DNA fragments of 299 or 301 bp, containing the dimorphic position. Amplicons were cut with restriction enzyme Hpy81. Genotype and allele frequencies for the resistant allele A and sensitive allele G were calculated in all the tested chickens. Results of PCR-RFLP were confirmed by sequencing. The three genotypes AA, AG, GG at the target nucleotide position in Mx gene were represented in all the studied Egyptian chicken breeds and strains except Baladi strain which showed only one genotype AA. The average allele frequency of the resistant A allele in the tested birds (0.67) was higher than the sensitive G allele average frequency in the same birds (0.33). Appling PCR-RFLP technique in the breeding program can be used to select chickens carrying the A allele with high frequencies. This will help in improving poultry breeding in Egypt by producing infectious disease-resistant chickens.
ISSN:1687-157X
2090-5920
DOI:10.1016/j.jgeb.2017.11.002