Tiny probes measure cell surface pH in diatoms

© Marine Biological Association

Epifluorescence microscopy of the large marine diatom Odontella sinensis showing the arrangement of the chloroplasts.

Marine diatoms contribute significantly to photosynthesis in our oceans and act as the base of the food chain in many of the most productive fisheries. The process of photosynthesis in phytoplankton is affected by cell size, as the rate at...