Molecular characterization, phylogenetic analysis and expression profiling of myoglobin and cytoglobin genes in response to heat stress in channel catfish Ictalurus punctatus

J. B. Feng, S. K. Liu, R. J. Wang, J. R. Zhang, X. L. Wang, L. Kaltenboeck, J. L. Li, Z. J. Liu

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

To understand the function of myoglobin (Mb) and cytoglobin (Cygb) in channel catfish Ictalurus punctatus in response to heat stress, mb and cygb genes were identified and characterized in this study. These genes were widely expressed in all the tested tissues, but strong tissue preferences were observed, with the mb gene being expressed most highly in the heart, cygb1 most highly expressed in the intestine and cygb2 most highly expressed in the brain. After heat-stress challenge, mb and cygb genes were up-regulated in almost all tested tissues. In general, such up-regulation was more dramatic in the tolerant group than in the intolerant group, suggesting that higher expression of mb and cygb genes contributed to greater tolerance of I. punctatus to heat stress.

Original languageEnglish (US)
Pages (from-to)592-604
Number of pages13
JournalJournal of Fish Biology
Volume86
Issue number2
DOIs
StatePublished - Feb 1 2015
Externally publishedYes

Keywords

  • Evolution
  • Fish
  • Gene
  • Genome
  • Heat tolerance

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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