Evidence map›Paper›PMID 26446824›Full record

ArticleBMC biotechnology2015

Development of an efficient RNA interference method by feeding for the microcrustacean Daphnia.

Charles A Schumpert, Jeffry L Dudycha, Rekha C Patel

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
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  18. Population Genomics ofGenetics · 2017
    Article
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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

3 authors at 1 institution in 1 country.

Charles A SchumpertDepartment of Biological Sciences, University of South Carolina, 700 Sumter Street, Columbia, SC, 29208, USA.
Jeffry L DudychaDepartment of Biological Sciences, University of South Carolina, 700 Sumter Street, Columbia, SC, 29208, USA.
Rekha C PatelDepartment of Biological Sciences, University of South Carolina, 700 Sumter Street, Columbia, SC, 29208, USA. patelr@biol.sc.edu.
University of South Carolina · US

Funding

Characterization and genetic analysis of aging in DaphniaR01AG037969 · NIA · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI DUDYCHA, JEFFRY L. · 2010 to 2014
$1.4M
NIA NIH HHS 1R01AG037969-01NIA NIH HHS R01 AG037969
6 · The paper itself

Abstract

backgroundRNA interference (RNAi) is an important molecular tool for analysis of gene function in vivo. Daphnia, a freshwater microcrustacean, is an emerging model organism for studying cellular and molecular processes involved in aging, development, and ecotoxicology especially in the context of environmental variation. However, in spite of the availability of a fully sequenced genome of Daphnia pulex, meaningful mechanistic studies have been hampered by a lack of molecular techniques to alter gene expression. A microinjection method for gene knockdown by RNAi has been described but the need for highly specialized equipment as well as technical expertise limits the wider application of this technique. In addition to being expensive and technically challenging, microinjections can only target genes expressed during embryonic stages, thus making it difficult to achieve effective RNAi in adult organisms.

resultsIn our present study we present a bacterial feeding method for RNAi in Daphnia. We used a melanic Daphnia species (Daphnia melanica) that exhibits dark pigmentation to target phenoloxidase, a key enzyme in the biosynthesis of melanin. We demonstrate that our RNAi method results in a striking phenotype and that the phenoloxidase mRNA expression and melanin content, as well as survival following UV insults, are diminished as a result of RNAi.

conclusionsOverall, our results establish a new method for RNAi in Daphnia that significantly advances further use of Daphnia as a model organism for functional genomics studies. The method we describe is relatively simple and widely applicable for knockdown of a variety of genes in adult organisms.

Indexed as

Models, BiologicalRNA InterferenceAnimalsDaphniaEscherichia coliGene Knockdown TechniquesMelaninsMonophenol MonooxygenaseMelaninsMonophenol Monooxygenase

Identifiers

PMID26446824
PMCPMC4597761
OpenAlexW1933160660

What OpenQuestion holds

Textmetadata
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.