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Acaryochloris
''Acaryochloris marina'' is a species of unicellular Cyanobacteria that produces chlorophyll d as its primary pigment (instead of the typically used chlorophyll a), allowing it to photosynthesize using far-red light, at 700-750 nm wavelength. ''A. marina'' is found in temperate and tropic marine environments. Strains of ''A. marina'' have been isolated from multiple environments, including as epiphytes of red algae, associated with tunicates, and from rocks in intertidal zones (i.e. epilithic). Description It was first discovered in 1993 from coastal isolates of coral in the Republic of Palau in the west Pacific Ocean and announced in 1996. Despite the claim in the 1996 ''Nature'' paper that its formal description was to be published shortly thereafter, a tentative partial description was presented in 2003 due to phylogenetic issues (deep branching cyanobacterium). Genome Its genome was first sequenced in 2008, revealing a large bacterial genome of 8.3 Mb with nine pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorophyll D
Chlorophyll ''d'' (Chl ''d'') is a form of chlorophyll, identified by Harold Strain and Winston Manning in 1943. It was unambiguously identified in '' Acaryochloris marina'' in the 1990s. It is present in cyanobacteria which use energy captured from sunlight for photosynthesis. Chl ''d'' absorbs far-red Far-red light is a range of light at the extreme red end of the visible spectrum, just before infrared light. Usually regarded as the region between 700 and 750 nm wavelength, it is dimly visible to human eyes. It is largely reflected or transmit ... light, at 710 nm wavelength, just outside the optical range. An organism that contains Chl ''d'' is adapted to an environment such as moderately deep water, where it can use far red light for photosynthesis, although there is not a lot of visible light. Chl ''d'' is produced from chlorophyllide ''d'' by chlorophyll synthase. Chlorophyllide ''d'' is made from chlorophyllide ''a'', but the oxygen-using enzyme that performs this con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorophyll D Structure
Chlorophyll is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Ancient Greek, Greek words (, "pale green") and (, "leaf"). Chlorophyll allows plants to absorb energy from light. Those pigments are involved in oxygenic photosynthesis, as opposed to bacteriochlorophylls, related molecules found only in bacteria and involved in anoxygenic photosynthesis. Chlorophylls absorb light most strongly in the Diffuse sky radiation, blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a, chlorophyll ''a'' and chlorophyll b, ''b''. History Chlorophyll was first isolated and named by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
