发光杆菌属（Photobacterium）又叫光合细菌。染色性质上属于革兰氏阴性菌。普遍的存在于海洋环境中和海洋生物体的体表和少许海洋生物的肠道中。

• Watson, 1984. Bergey,s manual of systematic bacteriology.Volumel p539-545.

Photobacterium is a genus of gram-negative bacteria in the family Vibrionaceae. Members of the genus are bioluminescent, that is they have the ability to emit light.

Many species, including Photobacterium leiognathi and Photobacterium phosphoreum, live in symbiosis with marine organisms.