Gan, FeiZhang, ShuyiRockwell, Nathan C.Martin, ShelleyLangarias, J. ClarkBryant, Donald A.Gan, FeiZhang, ShuyiRockwell, Nathan C.Martin, ShelleyLangarias, J. ClarkBryant, Donald A.2014-11-122014-11-122014-08Gan, F., S. Zhang, N. C. Rockwell, S. S. Martin, J. C. Lagarias, and D. A. Bryant. Extensive Remodeling of a Cyanobacterial Photosynthetic Apparatus in Far-Red Light. Science 345, no. 6202 (August 21, 2014): 1312-1317.0036-8075https://scholarworks.montana.edu/handle/1/8715Cyanobacteria are unique among bacteria in performing oxygenic photosynthesis, often together with nitrogen fixation and, thus, are major primary producers in many ecosystems. The cyanobacterium, Leptolyngbya sp. strain JSC-1, exhibits an extensive photoacclimative response to growth in far-red light that includes the synthesis of chlorophylls d and f. During far-red acclimation, transcript levels increase ≥2-fold for ~900 genes and decrease ≥2-fold for ~2000 genes. Core subunits of photosystem I, photosystem II, and phycobilisomes are replaced by proteins encoded in a 21-gene cluster that includes a knotless red/far-red phytochrome and two response regulators. This acclimative response enhances light harvesting for wavelengths complementary to the growth light (λ = 700 to 750 nm) and enhances oxygen evolution in far-red light.BiochemistryEcologyArticle