2018
DOI: 10.1002/lno.11045
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The impacts of iron limitation and ocean acidification on the cellular stoichiometry, photophysiology, and transcriptome of Phaeocystis antarctica

Abstract: Phaeocystis antarctica is an integral player of the phytoplankton community of the Southern Ocean (SO), the world's largest high‐nutrient low‐chlorophyll region, and faces chronic iron (Fe) limitation. As the SO is responsible for 40% of anthropogenic CO2 uptake, P. antarctica must also deal with ocean acidification (OA). However, mechanistic studies investigating the effects of Fe limitation and OA on trace metal (TM) stoichiometry, transcriptomic, and photophysiological responses of this species, as well as … Show more

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Cited by 36 publications
(65 citation statements)
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“…This was also accompanied with a high photophysiological capacity of this species when exposed on the short-term to increasing irradiances. The beneficial effect of OA and HL for G. cryophila is opposed to previous observations, where growth and/or photosynthesis was inhibited in several diatoms, but no effect for the prymnesiophytes P. 25 antarctica (Feng et al, 2010;Trimborn et al, 2017a,b;Beszteri et al, 2018;Heiden et al, 2018;Koch et al, 2018, Heiden et al, 2019. Hence, G. cryophila could be a potential winner of climate change, with higher abundances and increased contribution to the productivity of future stratified, acidified and well illuminated coastal Antarctic waters.…”
Section: Implications For the Ecology Of G Cryophila In Future Coastcontrasting
confidence: 81%
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“…This was also accompanied with a high photophysiological capacity of this species when exposed on the short-term to increasing irradiances. The beneficial effect of OA and HL for G. cryophila is opposed to previous observations, where growth and/or photosynthesis was inhibited in several diatoms, but no effect for the prymnesiophytes P. 25 antarctica (Feng et al, 2010;Trimborn et al, 2017a,b;Beszteri et al, 2018;Heiden et al, 2018;Koch et al, 2018, Heiden et al, 2019. Hence, G. cryophila could be a potential winner of climate change, with higher abundances and increased contribution to the productivity of future stratified, acidified and well illuminated coastal Antarctic waters.…”
Section: Implications For the Ecology Of G Cryophila In Future Coastcontrasting
confidence: 81%
“…Phaeocystis antarctica, in particular when exposed to increased irradiance (Feng et al, 2010;Trimborn et al, 2017a,b;Beszteri et al 2018;Heiden et al, 2018;Koch et al, 2018, Heiden et al, 2019. The response of cryptophytes to OA is hitherto almost unexplored.…”
Section: Introductionmentioning
confidence: 99%
“…, Koch et al. ). Moreover, its blooms are frequently recorded in the iron‐enriched shelf areas (Schoemann et al.…”
Section: Discussionmentioning
confidence: 99%
“…, Koch et al. ). However, the observation that the majority of DEGs were down‐regulated shortly after iron supply suggests that iron addition perhaps does not evoke a response of its own, but rather restores cellular functions, which were otherwise negatively affected under iron scarcity, for example, by stress alleviation (down‐regulation of photoprotection) and restoration of normal cellular functions (up‐regulation of photosynthesis‐related processes).…”
Section: Discussionmentioning
confidence: 99%
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