Evidence map›Paper›PMID 25750992›Full record

ArticlePloS one2015

Nepenthesin protease activity indicates digestive fluid dynamics in carnivorous nepenthes plants.

Franziska Buch, Wendy E Kaman, Floris J Bikker, Ayufu Yilamujiang, Axel Mithöfer

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
9.3field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 60 citations in OpenAlex.

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  19. Transcriptomic and Proteomic Analyses ofFrontiers in plant science · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Franziska BuchDepartment of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Hans Knöll Straße 8, D-07745, Jena, Germany.
Wendy E KamanDepartment of Medical Microbiology and Infectious Diseases, Erasmus MC, `s-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands; Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
Floris J BikkerDepartment of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
Ayufu YilamujiangDepartment of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Hans Knöll Straße 8, D-07745, Jena, Germany.
Axel MithöferDepartment of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Hans Knöll Straße 8, D-07745, Jena, Germany.
Max Planck Institute for Chemical Ecology · DEErasmus University Rotterdam · NLUniversity of Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Carnivorous plants use different morphological features to attract, trap and digest prey, mainly insects. Plants from the genus Nepenthes possess specialized leaves called pitchers that function as pitfall-traps. These pitchers are filled with a digestive fluid that is generated by the plants themselves. In order to digest caught prey in their pitchers, Nepenthes plants produce various hydrolytic enzymes including aspartic proteases, nepenthesins (Nep). Knowledge about the generation and induction of these proteases is limited. Here, by employing a FRET (fluorescent resonance energy transfer)-based technique that uses a synthetic fluorescent substrate an easy and rapid detection of protease activities in the digestive fluids of various Nepenthes species was feasible. Biochemical studies and the heterologously expressed Nep II from Nepenthes mirabilis proved that the proteolytic activity relied on aspartic proteases, however an acid-mediated auto-activation mechanism was necessary. Employing the FRET-based approach, the induction and dynamics of nepenthesin in the digestive pitcher fluid of various Nepenthes plants could be studied directly with insect (Drosophila melanogaster) prey or plant material. Moreover, we observed that proteolytic activity was induced by the phytohormone jasmonic acid but not by salicylic acid suggesting that jasmonate-dependent signaling pathways are involved in plant carnivory.

Indexed as

Aspartic Acid ProteasesCloning, MolecularCyclopentanesFluorescence Resonance Energy TransferFood ChainMagnoliopsidaOxylipinsPlant ProteinsSalicylic AcidSubstrate SpecificityAspartic Acid ProteasesCyclopentanesjasmonic acidOxylipinsPlant ProteinsSalicylic Acid

Identifiers

PMID25750992
PMCPMC4353617
OpenAlexW2093581165

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.