Circadian rhythm of plant chemical defenses
Meike Burow, Dynamo Center

As photosynthetic organisms, plants tightly regulate their metabolism and development in anticipation of day and night. This includes the timely production of specialized metabolites produced by plants to defend themselves against their enemies. To ultimately understand how plants dynamically fine-tune their metabolism to accumulate defense compounds when for examples leaf-feeding insects are active, we study the regulation of the primary chemical defenses, glucosinolates, in the model plant Arabidopsis.

Dynamics of glucosinolate synthesis and degradation
Daniel Vik, Dynamo Center

Glucosinolate biosynthesis is considered very costly - largely due to a high degree of sulfur incorporation. As a result, constitutive low levels of glucosinolates are maintained, which increase drastically upon triggering. The relationship between enzymatically driven synthesis and degradation of these molecules is poorly understood, but is required to explain their dynamic behavior. We address the relationship between synthesis and degradation by combining analytical chemistry with mathematical modelling of glucosinolate accumulation.

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