Evidence map›Paper›PMID 19684242›Full record

ArticleThe Plant cell2009

MATE transporters facilitate vacuolar uptake of epicatechin 3'-O-glucoside for proanthocyanidin biosynthesis in Medicago truncatula and Arabidopsis.

Jian Zhao, Richard A Dixon

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in The Plant cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 177 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
177citing papers in PubMed, 1 pooled it
6.3field-weighted citation impact, top 3% 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

177 citing papers in PubMed, 1 synthesis or guideline pooled it, 383 citations in OpenAlex.

  1. Pooled it
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  15. Structural insights into a citrate transporter that mediates aluminum tolerance in barley.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  16. Article
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  18. Proanthocyanidin biosynthesis and postharvest seed coat darkening in pinto bean.Phytochemistry reviews : proceedings of the Phytochemical Society of Europe · 2025
    Review
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  20. Review

117 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Jian ZhaoPlant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401, USA.
Richard A Dixon
Noble Research Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Expression of the Arabidopsis thaliana MYB transcription factor TRANSPARENT TESTA 2 (TT2) in Medicago trunculata hairy roots induces both proanthocyanidin accumulation and the ATP-dependent vacuolar/vesicular uptake of epicatechin 3'-O-glucoside; neither process is active in control roots that do, however, possess anthocyanidin 3-O-glucoside vacuolar uptake activity. A vacuolar membrane-localized multidrug and toxic compound extrusion (MATE) transporter, Medicago MATE1, was identified at the molecular level and shown to preferentially transport epicatechin 3'-O-glucoside. Genetic evidence has implicated TT12, a tonoplastic MATE transporter from Arabidopsis, in the transport of precursors for proanthocyanidin biosynthesis in the seed coat. However, although Arabidopsis TT12 facilitates the transport of cyanidin 3-O-glucoside into membrane vesicles when expressed in yeast, there is no evidence that cyanidin 3-O-glucoside is converted to proanthocyanidins after transport into the vacuole. Here, we show that Arabidopsis TT12, like Medicago MATE1, functions to transport epicatechin 3'-O-glucoside as a precursor for proanthocyanidin biosynthesis, and Medicago MATE1 complements the seed proanthocyanidin phenotype of the Arabidopsis tt12 mutant both quantitatively and qualitatively. On the basis of biochemical properties, tissue-specific expression pattern, and genetic loss-of-function analysis, we conclude that MATE1 is an essential membrane transporter for proanthocyanidin biosynthesis in the Medicago seed coat. Implications of these findings for the assembly of oligomeric proanthocyanidins are discussed.

Indexed as

AnthocyaninsArabidopsisArabidopsis ProteinsBiological TransportGenetic Complementation TestGenetic VectorsGlucosidesKineticsMedicago truncatulaMicroscopy, ConfocalModels, BiologicalMolecular Sequence DataPhylogenyPlant ProteinsProanthocyanidinsReverse Transcriptase Polymerase Chain ReactionAnthocyaninsArabidopsis Proteinscyanidin-3-O-beta-glucopyranosideGlucosidesPlant ProteinsproanthocyanidinProanthocyanidinsTranscription Factorstt12 protein, Arabidopsis

Identifiers

PMID19684242
PMCPMC2751950
OpenAlexW2001058688

What OpenQuestion holds

Textmetadata
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.