Abstract
Charles Darwin was profoundly fascinated by Drosera (sundew plants), which have evolved as flesh-eaters with modified leaves, called traps, to catch small animals yet do not respond to transient mechanical stimuli. Despite Darwin’s early insights, and recent advances in characterizing these mechanisms, our knowledge of the signaling molecules underlying prey capture responses remains limited. Here, we identify glutathione (GSH) as an important mediator within the signaling cascade of sundew carnivory, implicated in trap closure in a calcium-dependent manner. We show that prey capture promotes GSH accumulation in sundew leaves, while GSH depletion inhibits the movement. Furthermore, application of GSH is sufficient to induce trap closure across the Droseraceae family, including both the snap traps of Venus flytrap and the adhesive traps of sundew species. These findings advance our understanding of the enigmatic mechanisms of plant carnivory, a phenomenon that has intrigued scientists since Darwin’s era.
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Claims 5
Claim · model-written summary
Prey capture promoted glutathione accumulation in sundew leaves.
Verbatim
e0“prey capture promotes GSH accumulation in sundew leaves”
Claim · model-written summary
Glutathione depletion inhibited sundew trap movement.
Not reportedComparator
Verbatim
e0“GSH depletion inhibits the movement.”
e1“sundew leaves”
Claim · model-written summary
Applied glutathione induced closure of Venus flytrap snap traps.
- Taxon
- Venus flytrap
.jpg?width=60)
Dionaea muscipulae0 - Organ / stage
- snap trapse0
- Treatment
- application of GSHe0
- Outcome
- trap closuree0
- Direction
- inducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“application of GSH is sufficient to induce trap closure across the Droseraceae family, including both the snap traps of Venus flytrap and the adhesive traps of sundew species.”
Claim · model-written summary
Applied glutathione induced closure of sundew adhesive traps.
- Taxon
- sundew speciese0
- Organ / stage
- adhesive trapse0
- Treatment
- application of GSHe0
- Outcome
- trap closuree0
- Direction
- inducee0
Not reportedComparator
Verbatim
e0“application of GSH is sufficient to induce trap closure across the Droseraceae family, including both the snap traps of Venus flytrap and the adhesive traps of sundew species.”
Claim · model-written summary
Glutathione was implicated in calcium-dependent sundew trap closure signaling.
Verbatim
e0“glutathione (GSH) as an important mediator within the signaling cascade of sundew carnivory, implicated in trap closure in a calcium-dependent manner.”