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Response of Liver-Type Fatty Acid-Binding Protein (L-FABP) Gene in Golden Pompano Trachinotus ovatus (Linnaeus 1758) to Temperature and Nutrient Manipulations

Response of Liver-Type Fatty Acid-Binding Protein (L-FABP) Gene in Golden Pompano Trachinotus ovatus (Linnaeus 1758) to Temperature and Nutrient Manipulations

Shengjie Zhou1,2, Pengfei Wang1,2, Chao Zhao1,2, Mingjun Fu3, Jian G. Qin4, Lihua Qiu1, Zhenhua Ma1, 4,* and Maoshang Lin1

1Tropical Aquaculture Research and Development Center, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Sanya 572018, China
2Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300, P.R. China
3College of Life Science, Longyan University, Fujian 364012, China
4College of Sciences and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia

Shengjie Zhou and Chao Zhao contributed equally to this work.

*      Corresponding author: zhenhua.ma@hotmail.com

 

ABSTRACT

The liver-type fatty acid binding proteins (L-FABP) gene in golden pompano Trachinotus ovatus larvae was cloned in the present study. The full length of L-FABP cDNA from golden pompano was 604 bp, including a 5’-untranslated region (UTR) of 154 bp, a 3’-UTR of 69 bp and an open reading frame (ORF) of 281 bp. L-FABP encoding a polypeptide of 126 amino acids with a predicted molecular weight of 14.06 kDa and a theoretical isoelectric point of 8.73. The results of qRT-PCR showed that the highest tissue expression of L-FABP gene was observed in fish liver on 18 DPH. Along with the ontogeny of fish larvae, the expression of L-FABP gene was low at hatching, and quickly increased with the increase of fish age from 0 DPH to 4 DPH, and reached the highest level on 12 DPH. The highest expression of L-FABP gene was observed in fish cultured at 29°C on both 12 DPH and 18 DPH (P< 0.05). Nutrition enhancement significantly affected the expression of L-FABP gene, the highest expression was observed in the Algamac 3080 treatment, and lowest expression was observed in the Nannochloropsis treatment. This study provides useful information on the functional mechanism of L-FABP gene in the ontogenetic development of golden pompano.
 

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Pakistan Journal of Zoology

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