Seasonal changes in gene expression and polymorphism of hsp70 in cultivated oysters (Crassostrea gigas) at extreme temperatures

Adán Valenzuela-Castillo, Arturo Sánchez-Paz, Reina Castro-Longoria, Marco Antonio López-Torres, José Manuel Grijalva-Chon*

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

15 Citas (Scopus)

Resumen

The HSP70 proteins are an important element of the response against thermal stress and infectious diseases, and they are highly conserved and ubiquitous. In some species, variations on the hsp70 encoding sequence resulted in intraspecific differential expression, which leads to variations on thermo-tolerance among individuals. This phenomenon has not been described in the Pacific oyster Crassostrea gigas, which is cultivated in Mexico under temperature conditions highly above the optimal for this species. The present study was aimed to identify associations between hsp70 genotypes and their expression levels in C. gigas. By analyzing a 603 bp fragment from the 3' end of the hsp70 gene, 21 different genotypes with 60 nucleotide polymorphic sites were detected, of which 34 sites were found in heterozygous condition. Although no correlation was found between genotype-expression-season, a minimum expression threshold that should be taken into account as an important feature for a future breeding program is proposed.

Idioma originalInglés
Páginas (desde-hasta)25-32
Número de páginas8
PublicaciónMarine Environmental Research
Volumen110
DOI
EstadoPublicada - 1 sep. 2015

Nota bibliográfica

Publisher Copyright:
© 2015 Elsevier Ltd.

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