Evidence map›Paper›PMID 32351797›Full record

ArticleApplications in plant sciences2020

Using a portable hydrogen cyanide gas meter to uncover a dynamic phytochemical landscape.

John Smiley, Colin R Morrison

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Applications in plant sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Article
  2. Article
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

2 authors.

John SmileyOffice of Research Affairs University of California San Diego La Jolla California USA.
Colin R MorrisonDepartment of Integrative Biology Graduate Program in Ecology, Evolution and Behavior The University of Texas at Austin Austin Texas USA.ORCID https://orcid.org/0000-0003-2370-3617

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

premiseOver 3000 species of plants and animals release toxic hydrogen cyanide (HCN) gas when their tissues are crushed. To investigate the role of cyanogenesis in

methodsThe method includes crushed tissue confinement in a closed chamber, where cyanogenesis reactions occur, followed by evacuation of gas to a portable HCN meter. Parts per million readings are repeated at 5-min intervals until HCN is depleted. Three versions of the closed reaction chamber apparatus were tested: plastic cup, airtight combination mortar-pestle, and glass desiccator jar.

resultsWe calibrated the method by comparing with a closed chamber measurement apparatus. The procedure's repeatability was demonstrated with a standard curve using known quantities of cyanogenic glycoside standard. Data collected with this method were also compared with the conventional colorimetric procedure. We processed over 2000 samples using this technique, revealing diverse elements of cyanogenic variation.

conclusionsThese methods produced well-defined data with minimal error. Results illustrated a one to four order-of-magnitude variation at organizational levels ranging from individual leaves to the entire

Indexed as

cyanide gas detectorfield measurementshydrogen cyanideLa Selva Biological StationPassiflora (Passifloraceae)phytochemical landscape

Identifiers

PMID32351797
PMCPMC7186902

What OpenQuestion holds

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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.