Journal of Tropical Oceanography ›› 2012, Vol. 31 ›› Issue (2): 96-101.doi: 10.11978/j.issn.1009-5470.2012.02.013cstr: 32234.14.j.issn.1009-5470.2012.02.013

• Marine Biology • Previous Articles     Next Articles

Effects of growth hormone and insulin-like growth factor- Ⅰ on shell growth related gene expression in Pinctada fucata Gould

ZHANG Li-juan1, 2, HE Mao-xian2   

  1. 1. Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology , Chinese Academy of Sciences , Guangzhou 510301, China 2. Graduate University of Chinese Academy of Sciences , Beijing 100049, China
  • Received:2010-12-02 Revised:2011-01-24 Online:2012-06-05 Published:2012-06-05

Abstract: This study investigated the expression levels of insulin-related peptide receptor gene ( irr) and several shell matrix protein genes ( nacrein, efcbp, n19, aspein, and accbp) in human recombinant growth hormone injection and insulin-like growth factor injection groups compared to the reference group in pearl oyster Pinctada fucata Gould. The expression level of irr was increased by hormone treatments ( P<0.05), which is consistent with its role as insulin-like growth factor receptor in mollusk. Higher transcripts of nacrein indicated higher growth metabolism levels in the pearl oysters of the experimental groups; compared to the reference group, the expression levels of n19, aspein and accbp decreased after growth hormone (GH) and insulin-like growth factor- Ⅰ (IGF- Ⅰ ) treatments ( P<0.05), suggesting they were suppressed by the GH and IGF- Ⅰ pathways. In addition, the expression levels of aspein and accbp were found to be highly correlated; we infer that these two genes may be regulated by a single upstream factor. The expression level of efcbp showed a relatively steady expression in all oysters, and no significant differences were found among these groups ( P>0.05).

Key words: growth hormone, insulin-like growth factor- Ⅰ, insulin-related peptide receptor, shell matrix protein, gene expression, Pinctada fucata Gould

CLC Number: 

  • Q959.215