Authors
Manuela Hartmann1,†, Polly G. Hill1,†, Eithne Tynan2,†, Eric P. Achterberg2,3,†,
Raymond J. G. Leakey4,† and Mikhail V. Zubkov1,∗,†
Affiliations
1National Oceanography Centre, Southampton, European Way, Southampton SO14 3ZH, UK, 2School of Ocean
and Earth Sciences, National Oceanography Centre Southampton, University of Southampton, Southampton,
SO14 3ZH, UK, 3GEOMAR Helmholtz Centre for Ocean Research, D-24148 Kiel, Germany and 4Scottish
Association for Marine Science, Scottish Marine Institute, Oban, Argyll PA37 1QA, UK
Topic
Microbiology, Sustainability
Abstract
Ubiquitous SAR11 Alphaproteobacteria numerically dominate marine planktonic communities. Because they are excruciatingly difficult to cultivate, there is comparatively little known about their physiology and metabolic responses to long- and short-term environmental changes. As surface oceans take up anthropogenic, atmospheric CO2, the consequential process of ocean acidification could affect the global biogeochemical significance of SAR11. Shipping accidents or inadvertent release of chemicals from industrial plants can have strong short-term local effects on oceanic SAR11. This study investigated the effect of 2.5-fold acidification of seawater on the metabolism of SAR11 and other heterotrophic bacterioplankton along a natural temperature gradient crossing the North Atlantic Ocean, Norwegian and Greenland Seas. Uptake rates of the amino acid leucine by SAR11 cells as well as other bacterioplankton remained similar to controls despite an instant ∼50% increase in leucine bioavailability upon acidification. This high physiological resilience to acidification even without acclimation, suggests that open ocean dominant bacterioplankton are able to cope even with sudden and therefore more likely with long-term acidification effects.
Extract
At least two transects of the filter were inspected to detect potential contaminants using an epifluorescence microscope (Axioscope, Zeiss, Germany) equipped with a LED light source pE-300 (CoolLED, UK).
Product Associated Features
The award winning pE-300 Series is a range of LED Illumination Systems for Fluorescence, Optogenetics, Electrophysiology and high speed microscopy applications. It comprises 3 systems providing a solution that covers a range of everyday fluorescence microscopy; from the simple pE-300lite through the classic pE-300white to the highly controllable pE-300ultra.
Product Type
pE-300white
Journal
Microbiology Ecology
Year of Publication
2015
Country of Publication
UK