Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (7): 203-209.doi: 10.13560/J.cnki.biotech.bull.1985.2017-0096

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Comparing and Analyzing the Disease Resistances of Four Disease-resistant Selected Lines of Macrobrachium rosenbergii

LI Yu-feng1, DAI Xi-lin1 ,YUAN Xin-cheng1 ,ZHOU Xun1 ,HU Yan-jie1 ,DING Fu-jiang2   

  1. 1. National Demonstration Center for Experimental Fisheries Science EducationShanghai Ocean University;Key Laboratory of Freshwater Aquatic Genetic ResourcesShanghai Ocean University,Ministry of Agriculture; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding;
    2. Shanghai Shencao Special Fisheries Development Corps,Shanghai 201516
  • Received:2017-02-17 Online:2017-07-11 Published:2017-07-11

Abstract:

Expressions of 4 disease-resistant genes(heat shock protein70(HSP70),Se-GPx,CAT,and SOD)from 4 selected lines(A,B,C,and D)of Macrobrachium rosenbergii were analyzed with real-time PCR. Infected with Vibrio alginolyticus,the disease-resistant abilities of the 4 selected lines were compared based on the survival rates of 4 selected lines and the expression differences ofHSP70,Se-GPx,CAT,and SOD among the 4 selected lines. The results showed that relative expression of HSP70 mRNA of A and B was obviously higher than that of C and D in the hepatopancreas(P<0.05). The expressions of Se-GPx,CAT,and SOD changed significantly within 96 h,and were different among the 4 selected lines at different time;however,the general trend was that expressions in A and B were higher than those in C and D. The rate of A,B,C,and D was 65.0%,65.8%,51.7%,and 53.3% after infecting with V.alginolyticus for a week,it is inferred that disease-resistant ability of A and B is higher than that of C and D.

Key words: Macrobrachium rosenbergii, HSP70, non-specific immune, Vibrio alginolyticus