Evidence map›Paper›PMID 20042113›Full record

ArticleBMC genomics2009

MicroRNA and tasiRNA diversity in mature pollen of Arabidopsis thaliana.

Robert Grant-Downton, Gael Le Trionnaire, Ralf Schmid, Josefina Rodriguez-Enriquez, Said Hafidh, Saher Mehdi, David Twell, Hugh Dickinson

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
14.3field-weighted citation impact, top 1% 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

59 citing papers in PubMed, 108 citations in OpenAlex.

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  14. Epigenetic Regulation of Plant Gametophyte Development.International journal of molecular sciences · 2019
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  20. Abiotic stress miRNomes in the Triticeae.Functional & integrative genomics · 2017
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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

8 authors at 4 institutions in 3 countries.

Robert Grant-DowntonDepartment of Plant Sciences, Oxford OX1, 3RB, UK. robert.grant-downton@plants.ox.ac.uk
Gael Le Trionnaire
Ralf Schmid
Josefina Rodriguez-Enriquez
Said Hafidh
Saher Mehdi
David Twell
Hugh Dickinson
University of Leicester · GBScience Oxford · GBDepartment of Plant Biology · USUniversidad de La Laguna · ES

Funding

Biotechnology and Biological Sciences Research Council BB/F007558/1Biotechnology and Biological Sciences Research Council BB/F008694/1
6 · The paper itself

Abstract

backgroundNew generation sequencing technology has allowed investigation of the small RNA populations of flowering plants at great depth. However, little is known about small RNAs in their reproductive cells, especially in post-meiotic cells of the gametophyte generation. Pollen - the male gametophyte - is the specialised haploid structure that generates and delivers the sperm cells to the female gametes at fertilisation. Whether development and differentiation of the male gametophyte depends on the action of microRNAs and trans-acting siRNAs guiding changes in gene expression is largely unknown. Here we have used 454 sequencing to survey the various small RNA populations present in mature pollen of Arabidopsis thaliana.

resultsIn this study we detected the presence of 33 different microRNA families in mature pollen and validated the expression levels of 17 selected miRNAs by Q-RT-PCR. The majority of the selected miRNAs showed pollen-enriched expression compared with leaves. Furthermore, we report for the first time the presence of trans-acting siRNAs in pollen. In addition to describing new patterns of expression for known small RNAs in each of these classes, we identified 7 putative novel microRNAs. One of these, ath-MIR2939, targets a pollen-specific F-box transcript and we demonstrate cleavage of its target mRNA in mature pollen.

conclusionsDespite the apparent simplicity of the male gametophyte, comprising just two different cell types, pollen not only utilises many miRNAs and trans-acting siRNAs expressed in the somatic tissues but also expresses novel miRNAs.

Indexed as

ArabidopsisBase SequenceComputational BiologyGene Expression Regulation, PlantMicroRNAsMolecular Sequence DataNucleic Acid ConformationPollenRNA, PlantRNA, Small InterferingSequence Analysis, RNAMicroRNAsRNA, PlantRNA, Small Interfering

Identifiers

PMID20042113
PMCPMC2808329
OpenAlexW2158864674

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.