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lüll Cell signals, cell contacts, and the organization of yeast communities Honigberg SMEukaryot Cell 2011[Apr]; 10 (4): 466-73Even relatively simple species have evolved mechanisms to organize individual organisms into communities, such that the fitness of the group is greater than the fitness of isolated individuals. Within the fungal kingdom, the ability of many yeast species to organize into communities is crucial for their growth and survival, and this property has important impacts both on the economy and on human health. Over the last few years, studies of Saccharomyces cerevisiae have revealed several fundamental properties of yeast communities. First, strain-to-strain variation in the structures of these groups is attributable in part to variability in the expression and functions of adhesin proteins. Second, the extracellular matrix surrounding these communities can protect them from environmental stress and may also be important in cell signaling. Finally, diffusible signals between cells contribute to community organization so that different regions of a community express different genes and adopt different cell fates. These findings provide an arena in which to view fundamental mechanisms by which contacts and signals between individual organisms allow them to assemble into functional communities.|Ammonia/metabolism[MESH]|Apoptosis[MESH]|Cell Adhesion/physiology[MESH]|Cell Communication/*physiology[MESH]|Extracellular Matrix/metabolism[MESH]|Gene Expression Regulation, Fungal[MESH]|Humans[MESH]|Reactive Oxygen Species/metabolism[MESH]|Saccharomyces cerevisiae Proteins/genetics/metabolism[MESH]|Saccharomyces cerevisiae/*cytology/*physiology[MESH]|Signal Transduction/*physiology[MESH] |