Evidence map›Paper›PMID 16027978›Full record

ArticlePlant molecular biology2005

A protective role for the embryo surrounding region of the maize endosperm, as evidenced by the characterisation of ZmESR-6, a defensin gene specifically expressed in this region.

Maite Balandín, Joaquín Royo, Elisa Gómez, Luis M Muniz, Antonio Molina, Gregorio Hueros

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Article in Plant molecular biology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
–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

32 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

6 authors.

Maite BalandínDepartamento de Biología Celular y Genética, Universidad de Alcalá, Madrid, Spain.
Joaquín Royo
Elisa Gómez
Luis M Muniz
Antonio Molina
Gregorio Hueros

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A Zea mays cDNA clone, ZmESR-6, was isolated as a gene specifically expressed at the basal region of immature kernels. ZmESR-6 cDNA encoded for a small (11.1 kDa) protein homologous to plant defensins. As for other defensins, the protein contained an N-terminal signal peptide signature and a C-terminal acidic peptide, the mature peptide has a molecular mass of 5.5 kDa. ZmESR-6 was highly expressed in developing kernels but the transcript could not be detected in any other maize tissue. The recombinant ZmESR-6 protein, purified from E. coli, showed strong in vitro inhibitory activity against bacterial and fungal plant pathogens, suggesting a role for ZmESR-6 in plant defence. The distribution of the transcripts was restricted to the embryo surrounding region (ESR) of the kernel. Immunolocalisation experiments revealed, however, that at the grain filling phase ZmESR-6 was accumulated in the placentochalaza-cells, rather than in the ESR cells that produce it. Our results suggest that the ESR has a role in protecting the embryo at the very early stages of seed development, whilst contributes to the general defence mechanism of the kernel at later developmental stages.

Indexed as

Amino Acid SequenceAnti-Infective AgentsBacteriaBase SequenceBlotting, NorthernBlotting, WesternDefensinsDNA, ComplementaryFungiGene Expression Regulation, DevelopmentalGene Expression Regulation, PlantImmunohistochemistryInhibitory Concentration 50In Situ HybridizationMolecular Sequence DataPlant ProteinsAnti-Infective AgentsDefensinsDNA, ComplementaryPlant ProteinsRecombinant ProteinsRNA, Messenger

Identifiers

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Registered trials

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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.