Occurrence of the planktonic bloom-forming marine diatom Chaetoceros tenuissimus Meunier and its infectious viruses in western Japan

Occurrence of the planktonic bloom-forming marine diatom Chaetoceros tenuissimus Meunier and its infectious viruses in western Japan
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日本西部浮游水华形成海洋硅藻 Chaetoceros tenuissimus Meunier 及其传染性病毒的出现

DOI:
10.1007/s10750-017-3306-0
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发表时间:
2017
期刊:
影响因子:
2.6
通讯作者:
Kimura Kei
Kimura Kei
中科院分区:
生物学3区
文献类型:
--
作者:
Tomaru Yuji;Toyoda Kensuke;Kimura Kei

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角毛藻属是海洋浮游硅藻中种类最丰富的一种。角毛藻是海洋环境中重要的初级生产者,但由于其个体小,对其生态和分布的研究还不多。因此,从2008年到2012年,我们检查了C.日本西部沿海沃茨中的一个最小的属tenuissimusMeunier及其感染性病毒。利用实时荧光定量PCR技术,我们发现C.在我们的研究中心广泛检测到极细线虫,2012年5月的最高浓度为2.4 × 107个细胞/L。沉积物分析表明,C. tenuissimusresting-stage细胞的存在可能是高水平的,尽管在同一区域检测到其感染性病毒。本研究表明,C.即使被传染性病毒包围,细茎线虫仍然保持着高产量。这种对病毒感染的耐受性,沿着硅藻的快速生长速度,表明C.极细虫在维持重要滤食性动物的生长方面可能起着重要作用。
The genusChaetocerosis among the most species-rich marine planktonic diatoms. MostChaetocerosare considered important primary producers in various marine environments, but because of their small size, we know little about their ecology and distribution. Therefore, from 2008 to 2012, we examined the occurrence ofC. tenuissimusMeunier, one of the smallest members in the genus, and its infectious viruses in western Japanese coastal waters. Using real-time quantitative PCR, we found thatC. tenuissimuswas widely detected throughout our study sites, with a maximum concentration of 2.4 × 107cells/l in May 2012. Sediment analysis revealed thatC. tenuissimusresting-stage cells were present at potentially high levels, despite its infectious viruses being detected in the same region. The present study suggests thatC. tenuissimusremains highly productive even when surrounded by its infectious viruses. This tolerance to viral infection, along with the diatom’s fast growth rate, suggests thatC. tenuissimusmight play an important role in maintaining the growth of important filter feeders.
应用实时荧光定量PCR检测和定量开花硅藻Chaetoceros tenuissimus Meunier
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