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Carnivorous Plant - Crossref

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Last Updated: 10 January 2023

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A novel approach for reliable qualitative and quantitative prey spectra identification of carnivorous plants combining DNA metabarcoding and macro photography

Using a novel DNA metabarcoding technique with in-situ macro photography as a plausibility control and to facilitate prey quantity estimations, we investigated prey spectra of three species of closely related annual Drosera from tropical northern Australia. Prey spectra dissimilarity was evidently different between the three tested species, but no prey specialization was found, no prey specificization was found, and habitat or plant population density variations were likely the key factors.

Source link: https://doi.org/10.1038/s41598-022-08580-8


Genomic evidence for rapid speciation and gene flow between sympatric carnivorous Nepenthes pitcher plants

In theory, interspecific gene flow could be sufficient to reverse speciation, or else erode neutral divergence and reveal genes and underlying genes whose divergence is due to selection. Mixed assemblages of carnivorous Nepenthes pitcher plants, which often grow natural hybrids but have particular phenotypes, are investigated here. We can identify divergence and introgression for eight Nepenthes species that grow sympatrically in populations of three to seven species at four locations in Southeast Asia, totaling 22 populations. These incipient species also displayed some natural hybrids, but in addition, both ABBA-BABA and ABC showed relatively recent or ongoing introgression, raising the question as to how divergence is maintained in these hybrid zones. Both the carnivorous pitcher traps, whose morphology revealed greater divergence than expected under neutral evolution in the introgressing species pair N. hemsleyana and N. rafflesiana t. f. , may have been one of the factors likely to perpetuate divergence against gene flow.

Source link: https://doi.org/10.1101/2023.01.07.522986


A new carnivorous plant lineage ( Triantha ) with a unique sticky-inflorescence trap

Significance Since Darwin's ground-breaking monograph on carnivorous plants, scientists have found only 11 distinct sources of plant carnivory. We present the emergence of a new lineage of carnivorous plants portrayed by the flowering plant Triantha occidentalis in North America. Our research provides a stark reminder that other cryptic carnivores may yet to be discovered due to the fact that Triantha is close to major urban centers on the Pacific coast.

Source link: https://doi.org/10.1073/pnas.2022724118


Resting electrical network activity in traps of the aquatic carnivorous plants of the genera Aldrovanda and Utricularia

Abstract of this paper Abstract Abstract: The MEA system was used to record electrical responses of two aquatic carnivorous plants, Aldrovanda vesiculosa and Utricularia reflexa, in this study. In the study of the electrical network, higher synchronous activity was found relative to other plant species and organs previously described in the literature: indeed, the time intervals between the synchronized clusters are synchronized, and propagation times vary non-linearly with the distance due to this synsynchronization.

Source link: https://doi.org/10.1038/srep24989


Pollinator-prey conflicts in carnivorous plants: When flower and trap properties mean life or death

Abstract: Insect-pollinated carnivorous plants are expected to have improved health if they resolve pollinator-prey conflicts by sparing insects pollinating their flowers and trapping prey insects. We investigated whether separate blooms and traps of the carnivorous sundew species or pollinator preference for colours of flowers helps save pollinators. No volatiles were found in Drosera spatulata and D. arcturi, no volatiles were found from either their flowers or traps that could be used as kairomone attractants for insects. However, behavioral studies showed that white color and spatial separation between flowers and traps could help to minimize pollinator entrapment when trapping prey. D. auriculata flowers, in contrast, have flowers that are adjacent to their traps. Both pollinator and prey insects were attracted by the floral odour, while trap odour only attracted prey. This is the first scientific study to show that carnivorous plants conserve flower visitors by using graphic, spatial, and chemical methods to avoid flower visitors when trapping prey insects.

Source link: https://doi.org/10.1038/srep21065


Signaling and transport processes related to the carnivorous lifestyle of plants living on nutrient-poor soil

Signal molecules cannot be spread from the site of perception to the target tissue in this long distance signal transmission since their speed is insufficient. Therefore, plants as well as animals make use of electrical signal transmission for sufficient stimulus delivery, so long distances can be covered quickly. This review summarizes the most important developments in plant electrical signal transduction, focusing on the carnivorous Venus flytrap.

Source link: https://doi.org/10.1093/plphys/kiab297


Complexity and diversity of motion amplification and control strategies in motile carnivorous plant traps

Trapping characteristics and procedures vary significantly between various carnivorous plant species. We use snap traps, suction traps, and springboard-pitfall traps as examples of how traps combine and match various functions to control, trigger, and actuate movements that aid in prey capture, retention, and digestion. We illustrate a fundamental trade-off between electric investment and movement control, and we explore it in a pragmatic-ecological context.

Source link: https://doi.org/10.1098/rspb.2021.0771


Coprophagous features in carnivorous Nepenthes plants: a task for ureases

Nepenthes' limited species of the genus Nepenthes had mutualistic interactions with mammals for nitrogen supplementation. Here, we investigated the role of urease for Nepenthes hemsleyana that obtains nitrogen from the bat Kerivoula hardwickii while it roosts inside the pitchers. We hypothesized that N. hemsleyana is able to use urea from the bats u2019 excrements. In fact, we show that the 15 N-enriched urea supplied to Nepenthes pitchers is metabolized and that its nitrogen is dispersed within the plant. We established the presence and enzymatic activity of a Nepenthes plant tissue urease. The related urease cDNA from N. hemsleyana was isolated and functionally expressed.

Source link: https://doi.org/10.1038/s41598-017-11999-z


Prey capture analyses in the carnivorous aquatic waterwheel plant (Aldrovanda vesiculosa L., Droseraceae)

Abstract We investigated the predator-prey interactions between an Australian ecotype of the carnivorous waterwheel plant and its potential natural prey, Daphnia longicephala, which is also present in Australia. Snap-traps by A. vesiculosa, which close within 0. 05 ms after mechanical stimulation by zooplankton prey. Prey animalsu2019 locomotion activity in trap vicinity or inside the open traps is very variable. No flight response was received by a pilot in reaction to an initiated trap closure. However, several animals may be able to escape, either by being pushed out by the closing trap lobes, having a u201cluckyu201d starting position well before trap closure, or by being pushed out by the closing trap lobes. We hypothesize that the convex curvature of the two trap lobes and the infolded trap rims are important in the capture and retention of prey.

Source link: https://doi.org/10.1038/s41598-019-54857-w

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions