Department of Biology, University of North Carolina at Greensboro, Greensboro, North Carolina 27412.
Appl Environ Microbiol. 1989 Oct;55(10):2448-52. doi: 10.1128/aem.55.10.2448-2452.1989.
The cellulose-producing bacterium Acetobacter xylinum has been considered a strict aerobe, and it has been suggested that the function of cellulose is to hold cells in an aerobic environment. In this study, we showed that A. xylinum is capable of growing microaerophilically. Cellulose pellicles provided significant protection to A. xylinum cells from the killing effects of UV light. In experiments measuring colonization by A. xylinum, molds, and other bacteria on pieces of apple, cellulose pellicles enhanced colonization of A. xylinum on the substrate and provided protection from competitors which use the same substrate as a source of nutrients. Cellulose pellicles produced by A. xylinum may have multiple functions in the growth and survival of the organism in nature.
纤维素产生菌木醋杆菌一直被认为是严格的需氧菌,有人认为纤维素的功能是将细胞保持在需氧环境中。在这项研究中,我们表明木醋杆菌能够微需氧生长。纤维素菌膜为木醋杆菌细胞提供了对紫外线杀伤作用的显著保护。在测量木醋杆菌、霉菌和其他细菌在苹果片上定植的实验中,纤维素菌膜增强了木醋杆菌在基质上的定植,并防止了以相同基质为营养源的竞争者的定植。木醋杆菌产生的纤维素菌膜可能在该生物在自然界中的生长和生存中有多种功能。