Jasmonate-induced prey response in the carnivorous plant Drosera capensis
Long, Z. G.; Takahashi, G. R.; Cumpio, F. M.; Akbari, O.; Castelan, U.; Hadadian, M.; Le, J.; Alemayhu, A.; Einstein, D. E.; Einstein, E. E.; Kelz, J. I.; Kwok, A. O.; Pineda, A.; Shabakesaz, P.; Unhelkar, M. H.; Woodcock, S. M.; Butts, C. T.; Martin, R. W.
Show abstract
Drosera capensis is a carnivorous plant native to South Africa. Central to its prey capture and digestive processes is a complex array of biochemical processes triggering the production of both enzymes and small molecules. These processes are in part activated by the release of jasmonic acid, a plant defense hormone repurposed as a prey detection signal. Here, we use RNASeq and untargeted LC-MS metabolomics to study the response of D. capensis to a feeding stimulus. We confirm the expression of digestive proteins predicted in prior genomic work and show up- and downregulation for a number of enzyme classes in response to jasmonic acid. Metabolomics experiments indicate that many small molecules produced during feeding depend on specific nutrient inputs from prey (and not merely a jasmonic acid stimulus). These results shed light on the molecular basis of plant carnivory and the recruitment of existing biochemical pathways to perform specialized functions.
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