The photosynthetic pigment in bacteria is bacteriochlorophyll.
细菌光合作用的色素是细菌叶绿素。
英语百科
Photosynthetic pigment
A photosynthetic pigment (accessory pigment; chloroplast pigment; antenna pigment) is a pigment that is present in chloroplasts or photosynthetic bacteria and captures the light energy necessary for photosynthesis.