Viral lysis of Phaeocystis pouchetii and bacterial secondary production
Viral lysis of Phaeocystis pouchetii and bacterial secondary production
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DOI：
10.3354/ame016011
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发表时间：
1998-10-15
影响因子：
1.4
通讯作者：
Heldal, M
中科院分区：
文献类型：
--
作者：
Bratbak, G;Jacobsen, A;Heldal, M
在这项实验研究中，我们调查了病毒感染对初级生产力和碳的影响，现在在浮游植物-DOC-细菌食物链中的浮游植物种群的病毒裂解。所用的植物病原宿主-病毒系统是Phaeocystis pouchetii（Prymnesiophyceae）和病毒PpV 01。病毒感染允许细胞中的初级生产在大部分裂解周期中继续。在未受感染的藻类培养物中，DOC和细菌生物量的净产量较低，并且在实验结束时，DOC浓度为10%至20%，细菌生物量为藻类碳生物量的0.5%至4%。在藻类细胞的病毒裂解过程中释放的DOC的量意味着整个藻类生物质被转化为DOG。在病毒感染的培养物中，继细胞裂解和DOC释放之后的细菌生长证明病毒感染的净效应是藻类生物质有效转化为细菌生物质。
In this experimental study we investigated the effect of viral infection on primary production and carbon now in a phytoplankton-DOC-bacteria food chain during viral lysis of the phytoplankton population. The phytoplankter host-virus system used was Phaeocystis pouchetii (Prymnesiophyceae) and the virus PpV01. Viral infection allowed primary production in the cells to continue throughout most of the lytic cycle. In non-infected algal cultures, net production of DOC and bacterial biomass was low and at the end of the experiment the DOC concentration was 10 to 20%, and the bacterial biomass 0.5 to 4 % of the algal carbon biomass. The amount of DOC released during viral lysis of the algal cells implies that the entire algal biomass was converted to DOG. Growth of bacteria succeeding cell lysis and release of DOC in Virus infected cultures demonstrated that the net effect of the virus infection was an efficient conversion of algal biomass into bacterial biomass.