生物技术通报 ›› 2015, Vol. 31 ›› Issue (1): 209-213.doi: 10.13560/j.cnki.biotech.bull.1985.2015.01.032

• 研究报告 • 上一篇    下一篇

停乳链球菌对日本沼虾总超氧化物歧化酶活性的影响

赵卫红1,2, 张凤英3, 於叶兵1,2, 王资生, 齐志涛   

  1. (1.盐城工学院海洋与生物工程学院,盐城 224051;2.江苏省沿海池塘养殖重点实验室,盐城 224051;3.中国水产科学研究院东海水产研究所,上海 200090)
  • 收稿日期:2014-08-20 出版日期:2015-01-09 发布日期:2015-01-10
  • 作者简介:赵卫红,女,副教授,博士,研究方向:水产经济动物繁殖生理与营养;E-mail:misszwh@163.com
  • 基金资助:
    国家自然科学基金项目(31101887),江苏省自然科学基金资助项目(BK2011419,BK2012675)

Effect of Streptococcus dysgalactiae equisimilis on Total SOD Activity in Macrobrachium nipponense

Zhao Weihong1,2, Zhang Fengying3, Yu Yebing1,2, Wang Zisheng1,2, Qi Zhitao   

  1. (1. School of Marine and Bioengineering,Yancheng Institute of Technology,Yancheng 224051;2. Jiangsu Provincial Key Laboratory of Coastal Pond Aquaculture Ecology,Yancheng,224051;3. East China Sea Fisheries Research Institute,Chinese Academy of Fishery Science,Shanghai 200090)
  • Received:2014-08-20 Published:2015-01-09 Online:2015-01-10

摘要: 对健康的日本沼虾(1.40 ± 0.12)g分别肌肉注射0.6 × 106、2 × 106、4 × 106、6 × 106 CFU/mL的停乳链球菌菌液10 μL,注射后3 h、6 h、9 h、12 h、24 h、5 d、10 d分别采集肝胰腺、肌肉和鳃组织,测定其中的总超氧化物歧化酶(T-SOD)活性,研究停乳链球菌对日本沼虾T-SOD活性的影响。研究结果显示,肝胰腺中T-SOD活性于注射5 d后达到最大值(P < 0.05),10 d后0.6 × 106、2 × 106和4 × 106CFU/mL组T-SOD活性下降并接近对照组水平,而最高浓度组(6 × 106 CFU/mL)T-SOD酶活性仅有对照组的46%。肌肉和鳃中T-SOD活性均在注射6 h后达到最大值,注射10 d后,4 × 106和6 × 106 CFU/mL组的肌肉和6 × 106 CFU/mL组的鳃组织中T-SOD活性均仅有对照组的50%左右。另外,肌肉组织中T-SOD的峰值远高于鳃和肝胰腺组织中的峰值。上述结果表明,停乳链球菌不仅影响日本沼虾机体T-SOD酶的活性,而且肌肉、鳃和肝胰腺组织中酶的活性应答时间不同,且组织内酶活性的应答与菌的感染方式有关,另外,注射高浓度停乳链球菌长时间后会降低其组织中T-SOD酶活性。

关键词: 停乳链球菌, 日本沼虾, 总超氧化物歧化酶

Abstract: Total superoxide dismutase(T-SOD)activities were investigated in hepatopancreas, muscle and gill of Macrobrachium nipponense at 3 h, 6 h, 9 h, 12 h, 24 h, 5 d and 10 d after being challenged by Streptococcus dysgalactiae equisimilis at levels of 0.6×106, 2×106, 4×106 or 6×106 CFU/mL in this study. Results showed that activity of T-SOD in hepatopancreas of the prawn reached the maximum at 5 d after infection. The values in muscle and gill reached to a maximum at 6 h. The activities of T-SOD in the hepatopancreas and gill of prawns infected with 6×106 CFU/mL bacteria, in the muscle of prawns infected with 4 × 106 or 6 × 106 CFU/mL bacteria at 10 d decreased to about half of that in the control group. And the maximum in muscles was higher than those in hepatopancreas and gills. The results showed that Streptococcus dysgalactiae equisimilis could affect the activity of SOD in M. nipponense, and the response of the prawn to the bacteria was different in hepatopancreas, muscle and gill.

Key words: Streptococcus dysgalactiae equisimilis, Macrobrachium nipponense, total superoxide dismutase(T-SOD)