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Pan genome of the phytoplankton Emiliania underpins its global distribution

Read, BA and Kegel, J and Klute, MJ and Kuo, A and Lefebvre, SC and Maumus, F and Mayer, C and Miller, J and Monier, A and Salamov, A and Young, J and Aguilar, M and Claverie, JM and Frickenhaus, S and Gonzalez, K and Herman, EK and Lin, YC and Napier, J and Ogata, H and Sarno, AF and Shmutz, J and Schroeder, D and De Vargas, C and Verret, F and Von Dassow, P and Valentin, K and Van De Peer, Y and Wheeler, G and Dacks, JB and Delwiche, CF and Dyhrman, ST and Glöckner, G and John, U and Richards, T and Worden, AZ and Zhang, X and Grigoriev, IV and Allen, AE and Bidle, K and Borodovsky, M and Bowler, C and Brownlee, C and Mark Cock, J and Elias, M and Gladyshev, VN and Groth, M and Guda, C and Hadaegh, A and Iglesias-Rodriguez, MD and Jenkins, J and Jones, BM and Lawson, T and Leese, F and Lindquist, E and Lobanov, A and Lomsadze, A and Malik, SB and Marsh, ME and MacKinder, L and Mock, T and Mueller-Roeber, B and Pagarete, A and Parker, M and Probert, I and Quesneville, H and Raines, C and Rensing, SA and Riaño-Pachón, DM and Richier, S and Rokitta, S and Shiraiwa, Y and Soanes, DM and Van Der Giezen, M and Wahlund, TM and Williams, B and Wilson, W and Wolfe, G and Wurch, LL (2013) 'Pan genome of the phytoplankton Emiliania underpins its global distribution.' Nature, 499 (7457). 209 - 213. ISSN 0028-0836

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Abstract

Coccolithophores have influenced the global climate for over 200 million years. These marine phytoplankton can account for 20 per cent of total carbon fixation in some systems. They form blooms that can occupy hundreds of thousands of square kilometres and are distinguished by their elegantly sculpted calcium carbonate exoskeletons (coccoliths), rendering them visible from space. Although coccolithophores export carbon in the form of organic matter and calcite to the sea floor, they also release CO 2 in the calcification process. Hence, they have a complex influence on the carbon cycle, driving either CO 2 production or uptake, sequestration and export to the deep ocean. Here we report the first haptophyte reference genome, from the coccolithophore Emiliania huxleyi strain CCMP1516, and sequences from 13 additional isolates. Our analyses reveal a pan genome (core genes plus genes distributed variably between strains) probably supported by an atypical complement of repetitive sequence in the genome. Comparisons across strains demonstrate that E. huxleyi, which has long been considered a single species, harbours extensive genome variability reflected in different metabolic repertoires. Genome variability within this species complex seems to underpin its capacity both to thrive in habitats ranging from the equator to the subarctic and to form large-scale episodic blooms under a wide variety of environmental conditions. © 2013 Macmillan Publishers Limited. All rights reserved.

Item Type: Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science and Health > Biological Sciences, School of
Depositing User: Users 161 not found.
Date Deposited: 17 Dec 2014 17:12
Last Modified: 23 Jan 2019 01:15
URI: http://repository.essex.ac.uk/id/eprint/10330

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