@article {lacour_photoacclimation_2022,
	title = {Photoacclimation of the polar diatom Chaetoceros neogracilis at low temperature},
	journal = {PLOS ONE},
	volume = {17},
	number = {9},
	year = {2022},
	note = {Publisher: Public Library of Science},
	month = {sep},
	pages = {e0272822},
	abstract = {Polar microalgae face two major challenges: 1- growing at temperatures (-1.7 to 5{\textdegree}C) that limit enzyme kinetics; and 2- surviving and exploiting a wide range of irradiance. The objective of this study is to understand the adaptation of an Arctic diatom to its environment by studying its ability to acclimate to changes in light and temperature. We acclimated the polar diatom Chaetoceros neogracilis to various light levels at two different temperatures and studied its growth and photosynthetic properties using semi-continuous cultures. Rubisco content was high, to compensate for low catalytic rates, but did not change detectably with growth temperature. Contrary to what is observed in temperate species, in C. neogracilis, carbon fixation rate (20 min 14C incorporation) equaled net growth rate (μ) suggesting very low or very rapid (<20 min) re-oxidation of the newly fixed carbon. The comparison of saturation irradiances for electron transport, oxygen net production and carbon fixation revealed alternative electron pathways that could provide energy and reducing power to the cell without consuming organic carbon which is a very limiting product at low temperatures. High protein contents, low re-oxidation of newly fixed carbon and the use of electron pathways alternative to carbon fixation may be important characteristics allowing efficient growth under those extreme environmental conditions.},
	keywords = {5-bisphosphate carboxylase oxygenase, Carbon fixation, diatoms, Fluorescence, Light, Photons, Photosynthesis, pigments, RCC2278, Ribulose-1},
	issn = {1932-6203},
	doi = {10.1371/journal.pone.0272822},
	url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0272822},
	author = {Lacour, Thomas and Larivi{\`e}re, Jade and Ferland, Joannie and Morin, Philippe-Isra{\"e}l and Grondin, Pierre-Luc and Donaher, Natalie and Cockshutt, Amanda and Campbell, Douglas A. and Babin, Marcel}
}
@article {croteau_contrasting_2021,
	title = {Contrasting nonphotochemical quenching patterns under high light and darkness aligns with light niche occupancy in Arctic diatoms},
	journal = {Limnology and Oceanography},
	volume = {66},
	number = {S1},
	year = {2021},
	note = {_eprint: https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11587},
	pages = {S231{\textendash}S245},
	abstract = {Over the seasons, Arctic diatom species occupy shifting habitats defined by contrasting light climates, constrained by snow and ice cover dynamics interacting with extreme photoperiod and solar angle variations. How Arctic diatom photoadaptation strategies differ across their heterogeneous light niches remains a poorly documented but crucial missing link to anticipate Arctic Ocean responses to shrinking sea-ice and increasing light. To address this question, we selected five Arctic diatom species with diverse life traits, representative of distinct light niches across the seasonal light environment continuum: from snow-covered dimly lit bottom ice to summer stratified waters. We studied their photoacclimation plasticity to two growth light levels and the subsequent responses of their nonphotochemical quenching (NPQ) and xanthophyll cycle to both dark incubations and light shifts. We deciphered NPQ and xanthophyll cycle tuning in darkness and their light-dependent induction kinetics, which aligned with species{\textquoteright} light niche occupancy. In ice-related species, NPQ was sustained in darkness and its induction was more reactive to moderate light shifts. Open-water species triggered strong NPQ induction in darkness and reached higher maximal NPQ under high light. Marginal ice zone species showed strong adaptation to light fluctuations with a dark response fine-tuned depending upon light history. We argue these traits are anchored in diverging photoadaption strategies fostering Arctic diatom success in their respective light niches.},
	keywords = {RCC2046, RCC2278, RCC5318},
	issn = {1939-5590},
	doi = {10.1002/lno.11587},
	url = {https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.1002/lno.11587},
	author = {Croteau, Dany and Gu{\'e}rin, S{\'e}bastien and Bruyant, Flavienne and Ferland, Joannie and Campbell, Douglas A. and Babin, Marcel and Lavaud, Johann}
}
@article {Lacour2019,
	title = {Decoupling light harvesting, electron transport and carbon fixation during prolonged darkness supports rapid recovery upon re-illumination in the Arctic diatom Chaetoceros neogracilis},
	journal = {Polar Biology},
	year = {2019},
	note = {ISBN: 0123456789 Publisher: Springer Berlin Heidelberg tex.mendeley-tags: RCC2278},
	month = {may},
	keywords = {Arctic microalgae, Darkness, Diatom, GROWTH RATE, Photosynthesis, Polar night, RCC2278, temperature},
	issn = {0722-4060},
	doi = {10.1007/s00300-019-02507-2},
	url = {https://doi.org/10.1007/s00300-019-02507-2 http://link.springer.com/10.1007/s00300-019-02507-2},
	author = {Lacour, Thomas and Morin, Philippe-Isra{\"e}l and Sciandra, Th{\'e}o and Donaher, Natalie and Campbell, Douglas A. and Ferland, Joannie and Babin, Marcel}
}
@article {Ni2016,
	title = {Arctic Micromonas uses protein pools and non-photochemical quenching to cope with temperature restrictions on Photosystem II protein turnover},
	journal = {Photosynthesis Research},
	volume = {131},
	number = {2},
	year = {2017},
	note = {ISBN: 1112001603 Publisher: Springer Netherlands tex.mendeley-tags: 2016,RCC806},
	month = {feb},
	pages = {203{\textendash}220},
	keywords = {2016, {\'a}, Photoinactivation, photoinactivation {\'a} xanthophyll cycle, Photosystem II, Prasinophyte, prasinophyte {\'a} photosystem ii, RCC806, Xanthophyll cycle},
	issn = {0166-8595},
	doi = {10.1007/s11120-016-0310-6},
	url = {http://link.springer.com/10.1007/s11120-016-0310-6},
	author = {Ni, Guangyan and Zimbalatti, Gabrielle and Murphy, Cole D. and Barnett, Audrey B. and Arsenault, Christopher M. and Li, Gang and Cockshutt, Amanda M. and Campbell, Douglas A.}
}
