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

Daniel Maurer, Daniel Weber, Eva Ballering, Salah Alfarraj, Gada Albasher, Rainer Hedrich, Christiane Werner, Heinz Rennenberg

Annals of botany 2020 Mar 09

filter terms:

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 h 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. © The Author(s) 2019. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

Citation

Daniel Maurer, Daniel Weber, Eva Ballering, Salah Alfarraj, Gada Albasher, Rainer Hedrich, Christiane Werner, Heinz Rennenberg. Photosynthetic cyclic electron transport provides ATP for homeostasis during trap closure in Dionaea muscipula. Annals of botany. 2020 Mar 09;125(3):485-494