Department of Forest Products, College of Forest Science, Kookmin University, 861-1 Jeongneung-dong, Seongbuk-gu, Seoul 136-702, South Korea.
Biochem Biophys Res Commun. 2010 May 7;395(3):432-5. doi: 10.1016/j.bbrc.2010.04.048. Epub 2010 Apr 10.
The termite is a good model of symbiosis between microbes and hosts and possesses an effective cellulose digestive system. Oxygen-tolerant bacteria, such as Dyella sp., Chryseobacterium sp., and Bacillus sp., were isolated from Reticulitermes speratus gut. Notably, the endo-beta-1,4-glucanase (EG) activity of all 16 strains of isolated bacteria was low. Due to the combined activity of EG from the termites and their symbiotic protozoa, the bacteria might not be compelled to express EG. This observation demonstrates how well intestinal bacteria have assimilated themselves into the efficient cellulose digestive systems of termites.
白蚁是微生物和宿主共生的良好模型，拥有有效的纤维素消化系统。从台湾乳白蚁肠道中分离到耐氧细菌，如 Dyella sp.、Chryseobacterium sp. 和 Bacillus sp.。值得注意的是，分离得到的 16 株菌的内切-β-1,4-葡聚糖酶（EG）活性均较低。由于白蚁及其共生原生动物的 EG 共同作用，这些细菌可能不必表达 EG。这一观察结果表明，肠道细菌与白蚁高效的纤维素消化系统结合得非常好。
