Evidence map›Paper›PMID 31033104›Full record

ArticlePlant biotechnology journal2019

Cas9-mediated mutagenesis of potato starch-branching enzymes generates a range of tuber starch phenotypes.

Aytug Tuncel, Kendall R Corbin, Jennifer Ahn-Jarvis, Suzanne Harris, Erica Hawkins, Mark A Smedley, Wendy Harwood, Frederick J Warren, Nicola J Patron, Alison M Smith

Open access · goldAbstract read
In one paragraph

Article in Plant biotechnology journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
20.4field-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

64 citing papers in PubMed, 152 citations in OpenAlex.

  1. Article
  2. Review
  3. Advances in CRISPR Plant Applications.International journal of molecular sciences · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Biofortification of potato nutrition.Journal of advanced research · 2025
    Review
  10. Article
  11. CRISPR-Cas Gene Editing Technology in Potato.International journal of molecular sciences · 2025
    Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. CRISPR-Cas9 mediated editing ofFrontiers in genome editing · 2025
    Article
  20. Review

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

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 1 country.

Aytug TuncelJohn Innes Centre, Norwich Research Park, Norwich, UK.
Kendall R CorbinQuadram Institute Bioscience, Norwich Research Park, Norwich, UK.
Jennifer Ahn-JarvisQuadram Institute Bioscience, Norwich Research Park, Norwich, UK.
Suzanne HarrisQuadram Institute Bioscience, Norwich Research Park, Norwich, UK.
Erica HawkinsJohn Innes Centre, Norwich Research Park, Norwich, UK.
Mark A SmedleyJohn Innes Centre, Norwich Research Park, Norwich, UK.
Wendy HarwoodJohn Innes Centre, Norwich Research Park, Norwich, UK.
Frederick J WarrenQuadram Institute Bioscience, Norwich Research Park, Norwich, UK.
Nicola J PatronEarlham Institute, Norwich Research Park, Norwich, UK.ORCID 0000-0002-8389-1851
Alison M SmithJohn Innes Centre, Norwich Research Park, Norwich, UK.ORCID 0000-0001-6927-9650
John Innes Centre · GBNorwich Research Park · GB

Funding

Biotechnology and Biological Sciences Research Council BB/J004561/1Biotechnology and Biological Sciences Research Council BB/L014130/1Biotechnology and Biological Sciences Research Council BB/R012512/1Biotechnology and Biological Sciences Research Council BBS/E/J/00000020Biotechnology and Biological Sciences Research Council BBS/E/J/000PR9799
6 · The paper itself

Abstract

We investigated whether Cas9-mediated mutagenesis of starch-branching enzymes (SBEs) in tetraploid potatoes could generate tuber starches with a range of distinct properties. Constructs containing the Cas9 gene and sgRNAs targeting SBE1, SBE2 or both genes were introduced by Agrobacterium-mediated transformation or by PEG-mediated delivery into protoplasts. Outcomes included lines with mutations in all or only some of the homoeoalleles of SBE genes and lines in which homoeoalleles carried several different mutations. DNA delivery into protoplasts resulted in mutants with no detectable Cas9 gene, suggesting the absence of foreign DNA. Selected mutants with starch granule abnormalities had reductions in tuber SBE1 and/or SBE2 protein that were broadly in line with expectations from genotype analysis. Strong reduction in both SBE isoforms created an extreme starch phenotype, as reported previously for low-SBE potato tubers. HPLC-SEC and

Indexed as

CRISPR-Cas Systems1,4-alpha-Glucan Branching EnzymeAmylopectinCRISPR-Associated Protein 9MutagenesisPhenotypePlant ProteinsSolanum tuberosumStarch1,4-alpha-Glucan Branching EnzymeAmylopectinCRISPR-Associated Protein 9Plant ProteinsStarchCas9-mediated mutagenesispotato tuberstarch-branching enzymestarch granulestarch structure

Identifiers

PMID31033104
PMCPMC6835119
OpenAlexW2942611384

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.