Measurement of DIC acquisition and evidence for a CO2 concentrating mechanism in Gephyrocapsa oceanica (Isochrysidales, Coccolithophyceae)

IF 1.5 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY
S. Larsen, J. Beardall
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引用次数: 0

Abstract

ABSTRACT The possession of a carbon concentrating mechanism (CCM) by a given phytoplankton species will in part determine its response to changes in the dissolved inorganic carbon concentrations in the global ocean. Earlier work on CCMs in the coccolithophore Emiliania huxleyi suggested that this species did not possess a CCM, though more recent studies indicate that a CCM is indeed present. Here we report work showing that another coccolithophore species, Gephyrocapsa oceanica, also possesses a functioning CCM, implying that increasing CO2 concentrations are unlikely to lead to enhanced growth rates. We discuss the protocol required for working with this species, noting that due to its liths being 10 or more times as massive as of those of Emiliania huxleyi, much lower centrifugation speeds (<400 × g) must be used to avoid damage to the cells.
大洋藻DIC获取的测量和CO2浓缩机制的证据
特定浮游植物物种的碳浓缩机制(CCM)将在一定程度上决定其对全球海洋溶解无机碳浓度变化的响应。早期对颗石藻埃米利尼亚赫胥黎的CCM的研究表明,该物种不具有CCM,尽管最近的研究表明CCM确实存在。在这里,我们报告的工作表明,另一种球石藻物种Gephyrocapsa oceanica也具有功能性CCM,这意味着二氧化碳浓度的增加不太可能导致生长速度的提高。我们讨论了与该物种一起工作所需的协议,注意到由于其岩石质量是赫胥黎Emiliania huxleyi的10倍或更多,必须使用更低的离心速度(<400 × g)以避免对细胞造成损害。
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来源期刊
Phycologia
Phycologia 生物-海洋与淡水生物学
CiteScore
3.10
自引率
18.80%
发文量
54
审稿时长
3 months
期刊介绍: Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.
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