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/. Genoscope and . Labgem, , 91057.

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, Instituto Español de Oceanografía

, Instituto de Investigaciones Marinas (CSIC)

, Correspondence should be addressed to F.P. (email: frederic.partensky@sb-roscoff.fr) Supplementary information : Supplementary Figures S1 to S5 (Supplementary Tables S1 and S2 are provided as separate, p.450

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, Wavelength (nm)

, Absorbance

A. Sp, HCIR111A-specific pigments RCC1774-specific and shared pigments Supplementary Figure S2. On-line absorption spectra for all peaks of the HPLC chromatograms of strain RCC1774 and the control Acaryochloris sp. HCIR111A (except those already shown on Fig. 2) sorted by retention times. Spectra for pigments shared by the two strains are shown only once. Abbreviations: MgDVP, Mg-2,4-divinyl pheoporphyrin; RT, retention time