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首页> 外文期刊>Estuarine Coastal and Shelf Science >Variation of Amoebophrya community during bloom of Prorocentrum donghaiense Lu in coastal waters of the East China Sea
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Variation of Amoebophrya community during bloom of Prorocentrum donghaiense Lu in coastal waters of the East China Sea

机译：东海沿海水沿海水沿海水湖盛开期间Amobophrya社区的变异

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摘要

The parasitic dinoflagellates in the genus Amoebophrya infect and kill a number of free-living dinoflagellates. The parasitoid has the potential to regulate harmful dinoflagellate blooms due to its high offspring production rates and a certain degree of host specificity. The planktonic dinoflagellate Prorocentrum donghaiense Lu is a commonly observed harmful algal species in coastal waters of China, and limited studies have been conducted to explore the ecological roles of parasitism in association with bloom dynamics. Thus, the in situ occurrence, prevalence, and dynamics of Amoebophrya during the recurrent blooms of P. donghaiense were systemically studied via morphological observations and high-throughput sequencing. The parasitic infections were identified microscopically in six dinoflagellate taxa with prevalence up to 5.13%, while Amoebophrya infection in the bloomforming species P. donghaiense was rare (0.01%), suggesting that P. donghaiense was free of the top-down control of Amoebophrya in the area. In addition, high-throughput sequencing of environmental DNA revealed that Amoebophrya co-dominated both the initiation and termination stages of the P. donghaiense bloom (up to 21.20% of OTU), but was less abundant during persistence of the bloom (3.70% of OTU). Further, the dynamics of Amoebophrya in the water column possessed similar patterns as revealed by qRT-PCR, in which high copy numbers of Amoebophrya (up to 3.60 x 10(9) copies L-1) were detected in the initiation and termination stages of the P. donghaiense bloom and low copy numbers (1.16 x 10(9) copies L-1) during persistence of the bloom. These findings manifested the paradoxical dynamics and complicated ecological strategies of Amoebophrya organisms during dinoflagellate blooms that need further study.
机译：在amobophrya属的寄生酵母糖醛酸盐感染并杀死许多自由活的Dinoflagelates。由于其高后代生产率和一定程度的宿主特异性，寄生肝素具有调节有害的恐龙植物绽放。 Plankton inooflagellate普罗兰菜Dongaientrum Lu是中国沿海水域中常见的有害藻类，并进行了有限的研究，探讨了寄生派与盛开动态相关的生态作用。因此，通过形态学观察和高通量测序全身研究了在P. Dongaiense的复发盛开期间Amobophrya的原位发生，患病率和动态。寄生感染在六个丁胺蛋白分类群中被鉴定，患病率高达5.13％，而盛开物种P. dongaiense的amobophrya感染罕见（<0.01％），这表明P. dongaiense没有对Amobophrya的自上而下控制在那地区。此外，环境DNA的高通量测序显示，Amobophrya共同主导了P. Dongaiense Bloom的启动和终止阶段（高达21.20％的OTU），但在盛开的持续存在下更少于（3.70％） OTU）。此外，水柱中的Amobophrya的动态具有与QRT-PCR透露的类似模式，其中在启动和终止阶段中检测到AmoBophya的高拷贝数（高达3.60×10（9）份L-1）在绽放的持久性期间，P. Dongaiense Bloom和低拷贝数（1.16 x 10（9）份副本L-1）。这些发现表现出在需要进一步研究的Dinoflagelate绽放期间Amobophrya生物的矛盾动力学和复杂的生态策略。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2020年第30期|106887.1-106887.11|共11页
  • 作者

    Chen Tiantian; Liu Yun; Xu Sha; Song Shuqun; Li Caiwen;

  • 作者单位

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Ecol & Environm Sci Qingda 266200 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Ecol & Environm Sci Qingda 266200 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Ecol & Environm Sci Qingda 266200 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Ecol & Environm Sci Qingda 266200 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Qingdao Natl Lab Marine Sci & Technol Lab Marine Ecol & Environm Sci Qingda 266200 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Harmful algal blooms; Dinoflagellate; Parasitism; High-throughput sequencing; qRT-PCR;

    机译：有害的藻类绽放;丁络石;寄生术;高通量测序;QRT-PCR;

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