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Genome-Wide Identification of Hsp70 Genes in the Large Yellow Croaker (Larimichthys crocea) and Their Regulated Expression Under Cold and Heat Stress.


ABSTRACT: Heat shock proteins 70 (Hsp70) are required for key cellular processes and responses to environmental changes, however, there are an unknown number of hsp70 gene family members in the large yellow croaker (Larimichthys crocea). In the present study, 17 hsp70 genes were identified through the genome of the large yellow croaker. These genes are divided into seven evolutionarily distinct groups according to a phylogenetic tree. The orthologs of these hsp70 genes were found in humans and zebrafish. The expression patterns of the hsp70 gene family in the large yellow croaker under cold and heat stress were studied by examining transcriptome data. Six out of 17 genes were significantly unregulated or downregulated after cold or heat stress. There were two genes significantly upregulated and two genes downregulated in the liver after cold treatment, while after heat treatment, five genes were significantly upregulated, and no genes were significantly downregulated. Three expression patterns were detected: strictly heat-inducible hsp70, constitutively expressed and moderately heat-inducible hsp70, and constitutively expressed and less stress-dependent hsp70 genes. All the findings will contribute to a better understanding of the biological function of hsp70s in defending against thermal challenges.

SUBMITTER: Xu K 

PROVIDER: S-EPMC6316144 | BioStudies | 2018-01-01

SECONDARY ACCESSION(S): PF00012

REPOSITORIES: biostudies

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