Evidence map›Paper›PMID 10517833›Full record

ArticlePlant physiology1999

Expression of a polygalacturonase associated with tomato seed germination.

Y Sitrit, K A Hadfield, A B Bennett, K J Bradford, A B Downie

Open access · bronzeAbstract read
In one paragraph

Article in Plant physiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
5.9field-weighted citation impact, top 4% 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

43 citing papers in PubMed, 93 citations in OpenAlex.

  1. Article
  2. A polygalacturonase gene PG031 regulates seed coat permeability with a pleiotropic effect on seed weight in soybean.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022
    Article
  3. Article
  4. Article
  5. Egyptian chia seeds (Food science and biotechnology · 2021
    Article
  6. Article
  7. Article
  8. Physical Dormancy Release inPlants (Basel, Switzerland) · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Pectins, Endopolygalacturonases, and Bioenergy.Frontiers in plant science · 2016
    Review
  18. Review
  19. Article
  20. Article
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

5 authors at 1 institution in 1 country.

Y SitritDepartment of Vegetable Crops, One Shields Avenue, University of California, Davis, California 95616-8631, USA.
K A Hadfield
A B Bennett
K J Bradford
A B Downie
University of California, Davis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Radicle protrusion from tomato (Lycopersicon esculentum Mill.) seeds to complete germination requires weakening of the endosperm tissue opposite the radicle tip. In common with other cell wall disassembly processes in plants, polygalacturonases (PGs) may be involved. Only calcium-dependent exo-PG activity was detected in tomato seed protein extracts. Chromatographic profiles of a partially acid-hydrolyzed fraction of polygalacturonic acid further digested with seed extract were consistent with the presence of only calcium-dependent exo-PG activity. In addition, a transcript encoding a previously unknown PG was detected prior to the completion of germination. The mRNA, produced from a gene (LeXPG1) estimated by Southern analysis to be represented once in the genome, was also present in flowers (anthers) and in lower amounts in roots and stems. LeXPG1 mRNA abundance was low during seed development, increased during imbibition, and was even greater in seeds that had completed germination. Expression of LeXPG1 during germination predominates in the endosperm cap and radicle tip, and in the radicle appears as a distinct band possibly associated with vascular tissue differentiation. We suggest that PG is involved in cell wall loosening of the endosperm necessary for radicle protrusion from tomato seeds and in subsequent embryo and seedling growth.

Indexed as

Gene Expression Regulation, PlantGene Expression Regulation, EnzymologicGlycoside HydrolasesPhylogenyPolygalacturonaseSeedsSolanum lycopersicumexopolygalacturonaseGlycoside HydrolasesPolygalacturonase

Identifiers

PMID10517833
PMCPMC59404
OpenAlexW2155364800

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.