Yes, we CAM! First evidence of CAM photosynthesis in a carnivorous plant.

ABSTRACT: Crassulacean acid metabolism (CAM) is a photosynthetic adaptation enabling higher CO₂ concentration close to Rubisco and increased water use efficiency. It evolved in at least 38 plant families, none reported to be carnivorous. Here, we investigate CAM activity in the carnivorous genus Pinguicula, so far reported as C₃, with succulent leaves and distributed mainly in Central America. Eight species of Pinguicula, most with seasonal heterophylly, were cultivated under controlled conditions and monitored for changes in diel acidification (ΔH⁺) when grown with abundant or limited water availability. Additionally, leaf anatomy and gas exchange were studied in representative species. In the winter trial, five species had positive and significant ΔH⁺ 1 

SUBMITTER: Fleck NJ 

PROVIDER: S-EPMC12710813 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature