TY - JOUR
T1 - Density-dependent effects on allelopathic interactions in yeast
AU - Greig, Duncan
AU - Travisano, Michael
PY - 2008/3/1
Y1 - 2008/3/1
N2 - The ability of rare types to invade populations is important for the maintenance of diversity and spread of beneficial variants. Spatial structure promotes strategies of interference competition by limiting diffusion of interference toxins and resources, often allowing interference competitors to invade when rare. Consistent with previous results in other microbial systems, toxin production by Saccharomyces cerevisiae is advantageous in spatially structured, high-density environments, but not in unstructured environments. However, at low density and at low frequency, rare toxin producers cannot invade populations of common, sensitive, toxin nonproducers. This is because the likelihood of interaction between toxin producers and sensitives depends upon the density and frequency of both competitors.
AB - The ability of rare types to invade populations is important for the maintenance of diversity and spread of beneficial variants. Spatial structure promotes strategies of interference competition by limiting diffusion of interference toxins and resources, often allowing interference competitors to invade when rare. Consistent with previous results in other microbial systems, toxin production by Saccharomyces cerevisiae is advantageous in spatially structured, high-density environments, but not in unstructured environments. However, at low density and at low frequency, rare toxin producers cannot invade populations of common, sensitive, toxin nonproducers. This is because the likelihood of interaction between toxin producers and sensitives depends upon the density and frequency of both competitors.
KW - Density dependence
KW - Frequency dependence
KW - Interference competition
KW - Saccharomyces
KW - Spatial structure
KW - Yeast
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U2 - 10.1111/j.1558-5646.2007.00292.x
DO - 10.1111/j.1558-5646.2007.00292.x
M3 - Article
C2 - 17983463
AN - SCOPUS:40449138503
VL - 62
SP - 521
EP - 527
JO - Evolution; international journal of organic evolution
JF - Evolution; international journal of organic evolution
SN - 0014-3820
IS - 3
ER -