CAJ | 학술논문

在自然生存环境中，微生物细胞往往聚集在一起占据一个小生境。当微生物细胞聚集时，聚集体结构外围通常会被特殊胞外基质包裹；而在聚集体内，参与聚集的成员展现不同的表型，以发挥不同的职责甚至面临不同的命运；聚集体内不同代谢能力和表型的细胞可以彼此交流，以协调它们的行为。此类聚集行为可以使茵体细胞具有更强的逆境抵抗能力，并能提升微生物的环境生存适应性。综述了近年来关于微生物抵抗逆境而聚集的生化和分子机制的重要研究进展，讨论了曾一度被忽视的微生物群落的复杂性，并对其从生态和进化角度方面进行了系统论述。
재자연생존배경중，미생물세포왕왕취집재일기점거일개소생경。당미생물세포취집시，취집체결구외위통상회피특수포외기질포과；이재취집체내，삼여취집적성원전현불동적표형，이발휘불동적직책심지면림불동적명운；취집체내불동대사능력화표형적세포가이피차교류，이협조타문적행위。차류취집행위가이사인체세포구유경강적역경저항능력，병능제승미생물적배경생존괄응성。종술료근년래관우미생물저항역경이취집적생화화분자궤제적중요연구진전，토론료증일도피홀시적미생물군락적복잡성，병대기종생태화진화각도방면진행료계통논술。
The phenomenon that microorganisms position themselves in a niche is as cell aggregation had been observed in most of the natural environments. When microorganism cells aggregate together, specific extracellular matrix synthesis can be triggered for building the architecture of the cell assem- blages. Within a cellular aggregate, members of these communities can also develop into distinct phe-notypes to play different roles or undergo different fates. In addition, microbial cells with different metabolic capabilities and phenotypes can communicate with each other to coordinate their behaviors All these collective activities can lead to higher resistant capabilities to the environmental adversities and promote the adaptabilities of microorganisms. The biochemical and molecular mechanisms that had been proposed for microorganism aggregation to withstand adversities are reviewed, as well discussed is the sophistication of a once neglected kind of community, especially in its ecological and evolutionary aspects.