“…Yet, a growing body of work provides evidence for VOC cycling between planktonic groups in the surface ocean. For example, the range of VOCs consumed by abundant chemoheterotrophic bacteria, Pelagibacter, includes methanol (Sun et al, 2011), acetaldehyde (Halsey et al, 2017), acetone, cyclopentanol, cyclohexanol, and other yet unidentified compounds (Moore et al, 2020), but Pelagibacter can also simultaneously produce the climateactive gases, dimethylsulfide (DMS) and methanethiol, through metabolism of dimethylsulfoniopropionate (DMSP) (Sun et al, 2016). Other bacterioplankton are known to utilize assortments of single-carbon compounds for energy production or, in the cases of methanol and formaldehyde, a carbon source for assimilation into biomass (i.e., growth) (Dixon et al, 2011a,b;Sun et al, 2011;Halsey et al, 2012).…”