| 摘要: |
| 采用麻痹性贝类毒素小白鼠生物测定法,研究了在可控生态条件下两株海洋细菌S10、P42对塔玛亚历山大藻生长及其产毒量的影响。结果表明,菌株S10在较高浓度下对藻细胞的生长有明显的抑制作用,在较低浓度下抑藻生长作用较弱,不同浓度的菌株S10均能有效地抑制藻细胞内麻痹性贝类毒素的产生,且在较低浓度下效果较好;菌株P42对该藻的作用恰好与S10相反,在较低浓度下明显抑制藻细胞的生长,不同浓度的菌株P42也能有效地抑藻产毒,且在较高浓度下作用较明显。实验用的藻株毒力约为(0.95—12.14)×10-6 MU/cell,属于低毒藻株,该藻株在培养第14天达到毒性最高峰,峰值为12.14×10-6 MU/cell,之后逐渐下降。讨论了海洋细菌在赤潮生物防治中的应用前景。
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| 关键词: 塔玛亚历山大藻,麻痹性贝毒,海洋细菌 |
| DOI：10.11693/hyhz200301006006 |
| 分类号: |
| 基金项目:国家重点基础研究发展规划(973项目)资助,2001CB409710号;国家自然科学基金面上项目资助,30070157,30200041号 |
附件 |
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| EFFECT OF MARINE BACTERIA ON THE GROWTH AND PSP PROCUCTION OF RED-TIDE ALGAE |
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SU Jian-Qiang1, ZHENG Tian-Ling1, YU Zhi-Ming2, SONG Xiu-Xian2
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1.The School of Life Sciences, Xiamen University;2.Institute of Oceanology, The Chinese Academy of Sciences
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| Abstract: |
| The effects of two strains of marine bacteria isolated from sediment of Xiamen West Sea Area on the growth and PSP production of Alexandrium tamarense were studied under controlled experimental conditions. The results showed that the growth of A. tamarense was inhibited obviously by the strain S10 at high concentration, but at low concentration it has no evident effect on the growth of A. tamarense. The PSP (paralytic shellfish poison) production of A. tamarense was also inhibited by the strain S10 at different concentration especially at low concentration. The function of the strain P42 was contrary to the strain S10, the growth of A. tamarense was inhibited obviously by the strain P42 at low concentration and the PSP production of A. tamarense was inhibited by P42 at different concentrations too, especially at high concentration. The toxicity of this strain of A. tamarense was about (0.95—12.14)×10-6 MU/cell, a peak value (12.14×10-6 MU/cell) of toxicity appeared at 14th day, then decreased gradually.
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| Key words: Alexandrium tamarense, Paralytic shellfish poison, Marine bacteria |
