17.2 Purple Phototrophic Bacteria ·Purple phototrophic bacteria紫色光合细菌 -Carry out anoxygenic photosynthesis;no O2 evolved不产氧光合作用 -Morphologically diverse group形态多样化 Genera fall within the Alpha-,Beta-,or Gammaproteobacteria CHEN FENG,MICROBIOLOGY,SJTUChen Feng, Microbiology, SJTU 17.2 Purple Phototrophic Bacteria • Purple phototrophic bacteria 紫色光合细菌 – Carry out anoxygenic photosynthesis; no O2 evolved 不产氧光合作用 – Morphologically diverse group 形态多样化 – Genera fall within the Alpha-, Beta-, or Gammaproteobacteria