Correction to: The ISME Journal (2008) 2, 954–967; doi:10.1038/ismej.2008.51

The authors of the above noted an error in the footnote to Table 1. The footnote should read: The three different cyanobacterial symbionts in diatoms are Het-1, Richelia (in Rhizosolenia), Het-2, Richelia (in Hemiaulus) and Het-3, Calothrix (in Chaetoceros).