Evidence map›Paper›PMID 26757721›Full record

ArticleBMC plant biology2016

Salicylic acid treatment and expression of an RNA-dependent RNA polymerase 1 transgene inhibit lethal symptoms and meristem invasion during tobacco mosaic virus infection in Nicotiana benthamiana.

Wing-Sham Lee, Shih-Feng Fu, Zheng Li, Alex M Murphy, Elizabeth A Dobson, Laura Garland, Srinivasa Rao Chaluvadi, Mathew G Lewsey, Richard S Nelson, John P Carr

Open access · goldAbstract read
In one paragraph

Article in BMC plant biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
23.3field-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

48 citing papers in PubMed, 87 citations in OpenAlex.

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  12. Salicylic acid and RNA interference mediate antiviral immunity of plant stem cells.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  13. Article
  14. Review
  15. Review
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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

10 authors at 2 institutions in 2 countries.

Wing-Sham LeeDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. wing-sham.lee@rothamsted.ac.uk.
Shih-Feng FuDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. sffuplant@yahoo.com.tw.
Zheng LiDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. zhengli.ef@gmail.com.
Alex M MurphyDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. amm1013@cam.ac.uk.
Elizabeth A DobsonDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. lizziedobson354@gmail.com.
Laura GarlandDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. l.garland.2@googlemail.com.
Srinivasa Rao ChaluvadiPlant Biology Division, Samuel Roberts Noble Foundation, Inc, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA. srini.chaluvadi@gmail.com.
Mathew G LewseyDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. mlewsey@salk.edu.
Richard S NelsonPlant Biology Division, Samuel Roberts Noble Foundation, Inc, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA. rsnelson@noble.org.
John P CarrDepartment of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK. jpc1005@cam.ac.uk.
University of Cambridge · GBNoble Research Institute · US

Funding

Biotechnology and Biological Sciences Research Council BB/D008204/1Biotechnology and Biological Sciences Research Council BB/D014376/1Biotechnology and Biological Sciences Research Council BB/F014376/1Biotechnology and Biological Sciences Research Council BB/J011762/1
6 · The paper itself

Abstract

backgroundHost RNA-dependent RNA polymerases (RDRs) 1 and 6 contribute to antiviral RNA silencing in plants. RDR6 is constitutively expressed and was previously shown to limit invasion of Nicotiana benthamiana meristem tissue by potato virus X and thereby inhibit disease development. RDR1 is inducible by salicylic acid (SA) and several other phytohormones. But although it contributes to basal resistance to tobacco mosaic virus (TMV) it is dispensable for SA-induced resistance in inoculated leaves. The laboratory accession of N. benthamiana is a natural rdr1 mutant and highly susceptible to TMV. However, TMV-induced symptoms are ameliorated in transgenic plants expressing Medicago truncatula RDR1.

resultsIn MtRDR1-transgenic N. benthamiana plants the spread of TMV expressing the green fluorescent protein (TMV.GFP) into upper, non-inoculated, leaves was not inhibited. However, in these plants exclusion of TMV.GFP from the apical meristem and adjacent stem tissue was greater than in control plants and this exclusion effect was enhanced by SA. TMV normally kills N. benthamiana plants but although MtRDR1-transgenic plants initially displayed virus-induced necrosis they subsequently recovered. Recovery from disease was markedly enhanced by SA treatment in MtRDR1-transgenic plants whereas in control plants SA delayed but did not prevent systemic necrosis and death. Following SA treatment of MtRDR1-transgenic plants, extractable RDR enzyme activity was increased and Western blot analysis of RDR extracts revealed a band cross-reacting with an antibody raised against MtRDR1. Expression of MtRDR1 in the transgenic N. benthamiana plants was driven by a constitutive 35S promoter derived from cauliflower mosaic virus, confirmed to be non-responsive to SA. This suggests that the effects of SA on MtRDR1 are exerted at a post-transcriptional level.

conclusionsMtRDR1 inhibits severe symptom development by limiting spread of virus into the growing tips of infected plants. Thus, RDR1 may act in a similar fashion to RDR6. MtRDR1 and SA acted additively to further promote recovery from disease symptoms in MtRDR1-transgenic plants. Thus it is possible that SA promotes MtRDR1 activity and/or stability through post-transcriptional effects.

Indexed as

Enzyme InductionGene ExpressionMedicago truncatulaMeristemNicotianaPlant DiseasesPlants, Genetically ModifiedRNA-Dependent RNA PolymeraseSalicylic AcidTobacco Mosaic VirusRNA-Dependent RNA PolymeraseSalicylic Acid

Identifiers

PMID26757721
PMCPMC4710973
OpenAlexW2240027956

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.