| 解淀粉芽孢杆菌对三角褐指藻的化感作用研究 |
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| 引用本文： | 任国梁,董志国,李德盛,夏青,柳佳玲,崔振权,梁夏菲. 解淀粉芽孢杆菌对三角褐指藻的化感作用研究[J]. 水生生物学报, 2022, 46(2): 210-215. DOI: 10.7541/2021.2020.287 |
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| 作者姓名： | 任国梁 董志国 李德盛 夏青 柳佳玲 崔振权 梁夏菲 |
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| 作者单位： | 江苏海洋大学;江苏海洋大学;江苏省海洋生物技术协同创新中心 |
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| 基金项目： | 国家贝类产业技术体系专项(CARS-49);江苏省农业科技自主创新资金[CX(20)3150];江苏省自然资源发展专项资金(海洋科技创新,JSZRHYKJ202008)资助。 |
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| 摘 要： | 实验研究不同剂量(100、500和1000μL)的解淀粉芽孢杆菌菌液、解淀粉芽孢杆菌代谢产物和解淀粉芽孢杆菌(Bacillus amyloliquefaciens)及代谢产物混合液3种组合对三角褐指藻(Phaeodactylum tricornutum)生长的影响.结果表明,解淀粉芽孢杆菌、其代谢产物和两种的混合液对三...
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| 关 键 词： | 解淀粉芽孢杆菌 三角褐指藻 化感作用 浓度效应 阈值 |
| 收稿时间： | 2020-12-29 |
THE ALLELOPATHY OF BACILLUS AMYLOLIQUEFACIENS ON PHAEODACTYLUM TRICORNUTUM |
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| REN Guo-Liang,DONG Zhi-Guo,LI De-Sheng,XIA Qing,LIU Jia-Ling,CUI Zhen-Quan,LIANG Xia-Fei. THE ALLELOPATHY OF BACILLUS AMYLOLIQUEFACIENS ON PHAEODACTYLUM TRICORNUTUM[J]. Acta Hydrobiologica Sinica, 2022, 46(2): 210-215. DOI: 10.7541/2021.2020.287 |
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| Authors: | REN Guo-Liang DONG Zhi-Guo LI De-Sheng XIA Qing LIU Jia-Ling CUI Zhen-Quan LIANG Xia-Fei |
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| Affiliation: | (Jiangsu Provincial Key Laboratory of Marine Biological Resources and Environment,Jiangsu Ocean University,Lianyungang 222005,China;Jiangsu Provincial Key Laboratory of Marine Biotechnology,Jiangsu Ocean University,Lianyungang 222005,China;Co-Innovation Center of Jiangsu Marine Bio-industry Technology,Jiangsu Ocean University,Lianyungang 222005,China) |
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| Abstract: | Phaeodactylum tricornutum is one of the microalgae that cause red tide.This study explored the effects of different doses(100,500 and 1000μL)of Bacillus amylolyticus,B.amylolyticus metabolites and the mixture of B.amylolyti-cus and the metabolites on the growth of P.tricornutum.The results showed that metabolites and the mixture of B.amylolyticus and metabolites inhibited P.tricornutum.The numbers of algae cells in all 3 experimental groups were significantly reduced than those in the control group at day 4(P<0.05).The metabolite and the mixed solution signifi-cantly reduced the number of algae cells from day 1 to 4(P<0.05).Low and medium dosage of Bacillus amylolyticus significantly reduced the number of algae cells at day 3 and day 4,respectively.The number of algal cells in medium and high dosages of Bacillus amylolyticus further decreased with the addition of B.amylolyticus metabolites with a con-centration dependent pattern.B.amylolyticus and its metabolites co-regulated P.tricornutum.under certain threshold with the highest inhibition rates of 37.36%,54.87%and 65.05%respectively.In conclusion,the allelopathy of B.amy-lolyticus and its metabolites on the growth of P.tricornutum provided scientific basis for the effective control of red tide algae.In summary,Bacillus amyloliquefaciens has no obvious inhibitory effect on Phaeodactylum tricornutum,but its high concentration of metabolites and the mixture of the two can effectively inhibit the growth of Phaeodactylum tri-cornutum,and there is a threshold.Below this threshold,there is a concentration effect.The higher the concentration,the more obvious the inhibitory effect.The inhibitory effect of Bacillus amyloliquefaciens and its metabolites on Phaeodactylum tricornutum can be superimposed,and the inhibitory effect is the strongest when the two exist at the same time. |
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| Keywords: | Bacillus amyloliquefaciens Phaeodactylum tricornutum Allelopathy Concentration effect Threshold value |
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