Cited by 126CRISPR and Genetic EngineeringPlant Genetic and Mutation StudiesGenetically Modified Organisms Research

The Solanum tuberosum GBSSI gene: a target for assessing gene and base editing in tetraploid potato

Open access
Veillet, Florian, Chauvin, Laura, Kermarrec, Marie-Paule, Sevestre, François, Merrer, Mathilde, Terret, Zoé, Szydlowski, Nicolas, Devaux, Pierre +2 more·2019·Plant Cell Reports

Published version of a preprint

Abstract

Key message The StGBSSI gene was successfully and precisely edited in the tetraploid potato using gene and base-editing strategies, leading to plants with impaired amylose biosynthesis. Genome editing has recently become a method of choice for basic research and functional genomics, and holds great potential for molecular plant-breeding applications. The powerful CRISPR-Cas9 system that typically produces double-strand DNA breaks is mainly used to generate knockout mutants. Recently, the development of base editors has broadened the scope of genome editing, allowing precise and efficient nucleotide substitutions. In this study, we produced mutants in two cultivated elite cultivars of the tetraploid potato (Solanum tuberosum) using stable or transient expression of the CRISPR-Cas9 components to knock out the amylose-producing StGBSSI gene. We set up a rapid, highly sensitive and cost-effective screening strategy based on high-resolution melting analysis followed by direct Sanger sequencing and trace chromatogram analysis. Most mutations consisted of small indels, but unwanted insertions of plasmid DNA were also observed. We successfully created tetra-allelic mutants with impaired amylose biosynthesis, confirming the loss of function of the StGBSSI protein. The second main objective of this work was to demonstrate the proof of concept of CRISPR-Cas9 base editing in the tetraploid potato by targeting two loci encoding catalytic motifs of the StGBSSI enzyme. Using a cytidine base editor (CBE), we efficiently and precisely induced DNA substitutions in the KTGGL-encoding locus, leading to discrete variation in the amino acid sequence and generating a loss-of-function allele. The successful application of base editing in the tetraploid potato opens up new avenues for genome engineering in this species.

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Crossref · 10.1007/s00299-019-02426-w

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  • Gene and base-editing strategies have precisely edited the granule bound starch synthase gene (StGBSSI) in tetraploid potato and impaired amylose biosynthesis.

    “The gene and base-editing strategies has precisely edited granule bound starch synthase gene (StGBSSI) gene in the tetraploid potato and with impaired amylose biosynthesis (Veillet et al., 2019).”

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Authors
Veillet, F., Chauvin, L., Kermarrec, M.-P., Sevestre, F., Merrer, M., Terret, Z., Szydlowski, N., Devaux, P., Gallois, J.-L., & Chauvin, J.-E.
Affiliations
  • Institut Agro Rennes-Angers (FR)
  • Centre National de la Recherche Scientifique (FR)
  • Génétique et amélioration des fruits et légumes (FR)
Corresponding author
Veillet, Florian
Venue
Plant Cell Reports
Published
2019-05-17
Volume
38
Issue
9
Pages
1065-1080
ISSN
  • 0721-7714 (ISSN-L)
  • 1432-203X
OpenAlex
W2942972964
Cited by
124
References
79
Citations by year
2026: 10 · 2025: 10 · 2024: 21 · 2023: 16 · 2022: 25 · 2021: 23 · 2020: 16 · 2019: 3
FWCI
5.55
Type
journal article
Language
en
Open access
Locations
  • Plant Cell Reports (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • LillOA (Université de Lille (University Of Lille)) (submittedVersion)
  • LillOA (Université de Lille (University Of Lille)) (submittedVersion, other-oa)
Funders
Agence Nationale de la Recherche (ANR-11-BTBR-0001_GENIUS)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Genetic and Mutation Studies
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetically Modified Organisms Research
Keywords
tetraploid potato, potato, CRISPR/Cas9 base editing, amylose biosynthesis, starch synthase, loss-of-function mutants, high-resolution melting analysis, genome editing, molecular breeding
MeSH terms
Gene Editing, Alleles, Solanum tuberosum, Starch Synthase, Tetraploidy, CRISPR-Cas Systems

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