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  2. Purple sulfur bacteria - Wikipedia

    en.wikipedia.org/wiki/Purple_sulfur_bacteria

    The purple sulfur bacteria (PSB) are part of a group of Pseudomonadota capable of photosynthesis, collectively referred to as purple bacteria.They are anaerobic or microaerophilic, and are often found in stratified water environments including hot springs, stagnant water bodies, as well as microbial mats in intertidal zones.

  3. Purple bacteria - Wikipedia

    en.wikipedia.org/wiki/Purple_bacteria

    Purple bacteria or purple photosynthetic bacteria are Gram-negative proteobacteria that are phototrophic, capable of producing their own food via photosynthesis. [1] They are pigmented with bacteriochlorophyll a or b , together with various carotenoids , which give them colours ranging between purple, red, brown, and orange.

  4. Chromatiaceae - Wikipedia

    en.wikipedia.org/wiki/Chromatiaceae

    The bacteria inhabiting meromictic lakes generally grow at a quite fixed depth and in a relatively stable way over time, as in these lakes there is a permanent stratification due to the higher salinity of the bottom water layers; in particular, photosynthetic purple sulfur bacteria are located at the level of the chemocline, where they can ...

  5. Evolution of photosynthesis - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_photosynthesis

    [6] [7] Early photosynthetic systems, such as those from green and purple sulfur and green and purple nonsulfur bacteria, are thought to have been anoxygenic, using various molecules as electron donors. Green and purple sulfur bacteria are thought to have used hydrogen and hydrogen sulfide as electron and hydrogen donors.

  6. Bacteriochlorophyll - Wikipedia

    en.wikipedia.org/wiki/Bacteriochlorophyll

    Purple bacteria, Heliobacteria, Green Sulfur Bacteria, Chloroflexota, Chloracidobacterium thermophilum [2] 805, 830–890 BChl b: Purple bacteria: 835–850, 1020–1040 BChl c: Green sulfur bacteria, Chloroflexota, C. thermophilum, [2] C. tepidum: 745–755 BChl d: Green sulfur bacteria: 705–740 BChl e: Green sulfur bacteria: 719–726 BChl f

  7. Photoheterotroph - Wikipedia

    en.wikipedia.org/wiki/Photoheterotroph

    Purple non-sulfur bacteria, green non-sulfur bacteria, and heliobacteria are examples of bacteria that carry out this scheme of photoheterotrophy. Other organisms, including halobacteria and flavobacteria [8] and vibrios [9] have purple-rhodopsin-based proton pumps that supplement their energy supply.

  8. Ectothiorhodospiraceae - Wikipedia

    en.wikipedia.org/wiki/Ectothiorhodospiraceae

    Like all purple sulfur bacteria, they are capable of photosynthesis. To complete this energy process, Sulfur compounds are used as electron donors for carbon fixation in the pentose phosphate pathway. [4] This elemental sulfur accumulates outside of the cells. [4] Ectothiorhodospiraceae mobilis Table of Characteristics [4]

  9. Rhodobacter sphaeroides - Wikipedia

    en.wikipedia.org/wiki/Rhodobacter_sphaeroides

    Rhodobacter sphaeroides is a kind of purple bacterium; a group of bacteria that can obtain energy through photosynthesis. Its best growth conditions are anaerobic phototrophy (photoheterotrophic and photoautotrophic) and aerobic chemoheterotrophy in the absence of light. [1] R. sphaeroides is also able to fix nitrogen. [2]