Adaptive Sausagenomics Case Study

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Adaptive Sausagenomics PhD candidate: Yingchu LO Introduction Adaptation and Domestication There are a lots of different species in the world, how could they adapt to varies environments? For those organisms, they might have specific features which indicate improving their fitness to adapt specific environment. Domestication is a good model to study evolutionary process, because it happened recently and with strong selection. In 1868, Charles Darwin published a book – The variation of animals and plants under domestication, Darwin discuss how domestication effect evolution process? In this book, Darwin focus on study pigeons, after compare the features between different pigeon species, he found that those pigeons are sharing the same features with the same ancestor, indicate that under human selection, those pigeon species tend to be more adapted for human use, and in the end they have different features…show more content…
Based on previous study, Penicillium species are adapted to cheese environment, and there is HGTs event have been found in Penicillium roqueforti which is related to adaptation of cheese environment, and it is also possible might occur under sausage environments. Based on phylogenetic tree, P. nalgiovense and P. salamii are distantly related, and they are eighty percent similarity, which indicate those two species might have different domestication or adaptation events. To adapt variant stresses of sausage environment, we assume that Penicillium species have occurred a domestication event for sausage environment, through domestication bottleneck selection pressure, Penicillium species might have some specific features for specialized function and might lead to increase fitness to growth under sausage

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