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Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes
Published on: September 4, 2016
The Role of Epigenetic Switches in Polyphenism Control: Implications from a Nematode Model for the Developmental
Sara Wighard1,2, Ralf J Sommer1
1Max Planck Institute for Biology Tuebingen, Department for Integrative Evolutionary Biology, 72076 Tuebingen, Germany.
Abstract:
Polyphenisms, the capability of organisms to form two or more alternative phenotypes in response to environmental variation, are prevalent in nature. However, associated molecular mechanisms and potential general principles of polyphenisms among major organismal groups remain currently unknown. This review focuses on an emerging model system for developmental plasticity and polyphenism research, the nematode Pristionchus pacificus and explores mechanistic insight obtained through unbiased genetic, experimental and natural variation studies. Resulting findings identify a central role for epigenetic switches in the environmental control of alternative phenotypes and their micro-and macroevolution. Several features observed in P. pacificus are shared with insects and plants and might become general principles for the control of polyphenisms during development.
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