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TAGC Keynote Speaker Snapshot: Caroline Dean
Get to know the TAGC 2020 Keynote Speakers through our interview series. Caroline Dean has been a project leader at the John Innes Centre Norwich since 1988. Her work on seasonal timing mechanisms in plants has led into a detailed mechanistic analysis of the regulation of the floral repressor FLC in Arabidopsis. FLC transcription is […]
Invasion and Extinction Dynamics of Mating Types Under Facultative Sexual Reproduction [Population and Evolutionary Genetics]
In sexually reproducing isogamous species, syngamy between gametes is generally not indiscriminate, but rather restricted to occurring between complementary self-incompatible mating types. A longstanding question regards the evolutionary pressures that control the number of mating types observed in natural populations, which ranges from two to many thousands. Here, we describe a population genetic null model of this reproductive system, and derive expressions for the stationary probability distribution of the number of mating types, the establishment...
Involvement of a G Protein Regulatory Circuit in Alternative Oxidase Production in Neurospora crassa
The Neurospora crassa nuclear aod-1 gene encodes an alternative oxidase that functions in mitochondria. The enzyme provides a branch from the standard electron transport chain by transferring electrons directly from ubiquinol to oxygen. In standard laboratory strains, aod-1 is transcribed at very low levels under normal growth conditions. However, if the standard electron transport chain is disrupted, aod-1 mRNA expression is induced and the AOD1 protein is produced. We previously identified a strain of N....
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