Fig. 2

Heatmap representing normalized transcript abundance (transcript per million reads) of selected genes from bathypelagic prokaryotic communities in the different treatments and the original community (A). Light yellow to dark brown color range represents the increment in transcript abundance. Prokaryotic taxa affiliation of different gene transcripts (B). White bars indicate the absence of the corresponding gene. Natural sample stands for natural communities from Labrador Sea Water. Control T1 and Control T72 indicate prokaryotic communities filtered after 1 h and 72 h incubation, respectively. Thiosulfate T1 and Thiosulfate T72 indicate thiosulfate treated prokaryotic communities filtered after 1 h and 72 h incubation, respectively. Thiosulfate + DOM T1 and Thiosulfate + DOM T72 indicate thiosulfate + DOM (1 µM thiosulfate + 10 µM glucose + 10 µM acetate) treated prokaryotic communities filtered after 1 h and 72 h incubation, respectively