Photosynthetic cyclic electron transport provides ATP for homeostasis during trap closure in Dionaea muscipula.

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ID: 91561
2019
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Abstract
The processes connected with prey capture and the early consumption of prey by carnivorous Dionaea muscipula require high amounts of energy. The aim of the present study was to identify processes involved in flytrap energy provision and ATP homeostasis under these conditions.We determined photosynthetic CO2 uptake and chlorophyll fluorescence as well as the dynamics of ATP contents in the snap traps upon closure with and without prey.The results indicate that upon prey capture, a transient switch from linear to cyclic electron transport mediates a support of ATP homeostasis. Beyond 4 hours after prey capture, prey resources contribute to the traps' ATP pool and 24 h after prey capture, export of prey-derived resources to other plant organs may become preferential and causes a decline in ATP contents.Apparently, the energy demand of the flytrap for prey digestion and nutrient mining builds on both internal and prey-derived resources.
Reference Key
maurer2019photosyntheticannals Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Maurer, Daniel;Weber, Daniel;Ballering, Eva;Alfarraj, Salah;Albasher, Gada;Hedrich, Rainer;Werner, Christiane;Rennenberg, Heinz;
Journal Annals of botany
Year 2019
DOI
mcz185
URL
Keywords
photosynthesis respiration dionaea muscipula (venus flytrap) atp homeostasis chlorophyll a fluorescence electron transport plant carnivory

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