The abstract is read at the publisher; the summary is JClub's.
Far-red photons in the 700–750 nm range contribute to oxygenic photosynthesis far more effectively than previously thought when combined with shorter-wavelength light, challenging the 400–700 nm PAR definition.
- Why it matters: The contribution’s reported magnitude varies across studies, leaving uncertainty about whether PAR should be expanded to include far-red and how to measure and model photosynthesis accurately.
- What they did: This review synthesizes recent work on the Emerson enhancement effect and evaluates physiological mechanisms and study-specific factors that drive differences in estimated far-red contributions.
- The result: The findings support reconsidering PAR to better capture wavelength synergy, improving measurement and modeling of photosynthesis under sunlight and electric lighting.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.