A potential application of shrimp antilipopolysaccharide factor in disease control in aquaculture

作者：Supungul Premruethai; Jaree Phattarunda; Somboonwiwat Kunlaya; Junprung Wisarut; Proespraiwong Porranee; Mavichak Rapeepat; Tassanakajon Anchalee

来源：Aquaculture Research, 2017, 48(3): 809-821.

DOI：10.1111/are.12925

• antilipopolysaccharide factor
• shrimp immunity
• WSSV
• early mortality syndrome
• AHPND
• Vibrio parahaemolyticus

Antilipopolysaccharide factor isoform 3 from Penaeus monodon (ALFPm3) exhibits broad antimicrobial activities against various microbes, including bacteria, fungi and viruses, suggesting its potential use in disease control in shrimp aquaculture. Herein, the recombinant ALFPm3 protein (rALFPm3) exhibited effective antibacterial action against Vibrio parahaemolyticus, the causative agent of the new severe emerging disease, early mortality syndrome (EMS) or acute hepatopancreatic necrosis disease (AHPND) at the minimum inhibitory concentration value of 1.25-5.00M. The morphological changes such as bleb formation and cell distortion of V.parahaemoluticus were introduced after rALFPm3 treatment. Furthermore, to control V.parahaemoluticus infection, shrimp were treated with rALFPm3 by immersion and reduction in the cumulative mortality of V.parahaemoluticus-infected Penaeus vannamei was observed. As a potential immunostimulant, the administration of dietary rALFPm3 enhanced the transcript level of five immune-related genes; ALFPm3, haemocyte homoeostasis-associated protein, phagocytosis-activating protein, prophenoloxidase-activating enzyme 1 and cytosolic manganese superoxide dismutase. In addition, dietary rALFPm3 increased the shrimp survival after white spot syndrome virus (WSSV) injection by >35% compared to the 0% survival for the control group. Taken together, these results indicate the potential use of dietary rALFPm3 as immunostimulant in controlling AHPND and WSSV infections in shrimp aquaculture.

• 出版日期2017-3