SPS-ØØX17-5 - Innate® Acclimate Ranger Russet Potato | BCH-LMO-SCBD-112929 | Living Modified Organism | Biosafety Clearing-House

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Living Modified Organism (LMO)

Decisions on the LMO Risk Assessments  
last updated: 22 Dec 2017
Living Modified Organism identity
The image below identifies the LMO through its unique identifier, trade name and a link to this page of the BCH. Click on it to download a larger image on your computer. For help on how to use it go to the LMO quick-links page.
Innate® Acclimate Ranger Russet Potato
EN
X17
Yes
SPS-ØØX17-5
Simplot Innate® Acclimate potato is was developed through the retransformation of the SPS-ØØF10-7 Innate™ Ranger Russet Potato line. The resulting organism silences genes that lead to acrylamide formation in cooked potatoes, and genes that cause browning in damaged potatoes. It also expresses the late blight resistance gene which confers resistance to late blight disease.
EN
The term “Recipient organism” refers to an organism (either already modified or non-modified) that was subjected to genetic modification, whereas “Parental organisms” refers to those that were involved in cross breeding or cell fusion.
  • BCH-LMO-SCBD-109054-2 Living Modified Organism SPS-ØØF10-7 - Innate™ Ranger Russet Potato
    J.R. Simplot Company | Changes in quality and/or metabolite content (Pigmentation / Coloration, Protein and amino acids)
  • BCH-ORGA-SCBD-12106-6 Organism Solanum tuberosum (Potato, SOLTU)
    Crops
Var. Ranger Russet
EN
Characteristics of the modification process
pSIM1678 and pSIM1278
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  • Agrobacterium-mediated DNA transfer
Some of these genetic elements may be present as fragments or truncated forms. Please see notes below, where applicable.
  • BCH-GENE-SCBD-106420-1 ADP glucose pyrophosphorylase gene promoter | Solanum tuberosum (Potato, SOLTU)
    Promoter
  • BCH-GENE-SCBD-106421-1 Asparagine synthetase-1 gene | Solanum tuberosum (Potato, SOLTU)
    Protein coding sequence | Changes in quality and/or metabolite content (Protein and amino acids)
  • BCH-GENE-SCBD-106424-3 Polyphenol oxidase 5 gene | Solanum verrucosum (SOLVR)
    Protein coding sequence | Changes in quality and/or metabolite content (Pigmentation / Coloration)
  • BCH-GENE-SCBD-14997-6 Granule bound starch synthase gene promoter | Solanum tuberosum (Potato, SOLTU)
    Promoter
  • BCH-GENE-SCBD-106426-1 Phosphorylase-L gene promoter | Solanum tuberosum (Potato, SOLTU)
    Promoter
  • BCH-GENE-SCBD-106425-1 Alpha-glucan water dikinase R1 gene promoter | Solanum tuberosum (Potato, SOLTU)
    Promoter
  • BCH-GENE-SCBD-109062-1 Phytophthora infestans Resistance gene 1 Promoter | Solanum venturii (Wild Potato, SOLVN)
    Promoter
  • BCH-GENE-SCBD-102155-6 Phytophthora infestans Resistance gene 1 | Solanum venturii (Wild Potato, SOLVN)
    Protein coding sequence | Resistance to diseases and pests (Fungi)
  • BCH-GENE-SCBD-109063-1 Phytophthora infestans Resistance gene 1 terminator | Solanum venturii (Wild Potato, SOLVN)
    Terminator
  • BCH-GENE-SCBD-109064-2 Vacuolar invertase gene | Solanum tuberosum (Potato, SOLTU)
    Protein coding sequence | Changes in quality and/or metabolite content (Carbohydrates)
DNA insert from vector pSIM1278
This DNA insert comprises two expression cassettes that were inserted into the pSIM1278 transformation vector.

The first cassette comprises fragments of both the asparagine synthetase-1 gene (Asn1) and the polyphenol oxidase-5 gene (Ppo5), arranged as inverted repeats between the Agp promoter of the ADP  glucose pyrophosphorylase gene (Agp) and the Gbss promoter of the granule-bound starch synthase gene (Gbss) and results in silencing of both the Ppo5 and Asn1 genes.

The second cassette is comprised of fragments of the promoters of the starch associated gene (R1) and the phosphorylase-L gene (PhL), operably linked to the same Agp and Gbss promoters as the first cassette. The function of the second cassette is to silence the promoters of the starch associated gene (R1) and the phosphorylase-L gene (PhL).

Molecular analyses indicated that the transformed organism contains a single nearly complete copy of the DNA insert at a single locus and no vector backbone in the LMO. Alignment of the integration site sequences to the MSU potato reference genome indicates the likely integration site is on chromosome 8 for pSIM1278. There are no ORFs covering the left junction associated with the pSIM1278 insert in X17. A single ORF was identified spanning the right junction. It is almost completely native potato sequence.

DNA insert from vector pSIM1678
This DNA insert comprises two expression cassettes that were inserted into the pSIM1678 transformation vector.

The first cassette comprises of the Rpi-vnt1 expression cassette, which consists of the VNT1 protein
coding region regulated by the native Rpi-vnt1 promoter and terminator sequences. VNT1 is an R-protein from the wild Solanum species, S. venturii, which functions in the recognition of P. infestans and elicits a hypersensitive response in potato, conferring resistance to late blight disease.

The second insert consists of a down-regulation cassette for the plant vacuolar invertase gene, VInv, consisting of sequence from the potato VInv gene arranged as an inverted repeat and flanked by opposing plant promoters, pGbss and pAgp. Vacuolar invertase converts sucrose into glucose and fructose. Its down regulation prevents excess darkening during frying and contributes to low acrylamide potential

Molecular analyses indicated that the transformed organism contains a single nearly complete copy of the DNA insert at a single locus and no vector backbone in the LMO. Alignment of the integration site sequences to the MSU potato reference genome indicates the likely integration site is on chromosome 5 for pSIM1678. There are no ORFs covering the left junction associated with the pSIM1678 insert in X17. A single ORF was identified spanning the right junction. It is almost completely native potato sequence.

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None of the X17 junction ORFs were identified as homologs of known toxins or allergens. Each X17 insert is shown to be stable during vegetative propagation.
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LMO characteristics
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  • Food
Detection method(s)
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Additional Information
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Records referencing this document Show in search
Record type Field Record(s)
Risk Assessment generated by a regulatory process Living modified organism(s) 3
Country's Decision or any other Communication Living modified organism(s) 2