SERVICES
- Transformation of Norway spruce (Picea abies) by Agrobacterium- or biolistic mediated transformation of somatic embryo (SE)-cultures. N.B. The SE lab does NOT design and prepare constructs for transformation! Vectors for both transformation systems are however available at UPSC.
- Continued care by keeping culture through selection, bulk-up of selected, transgenic SE-culture, embryo maturation and germination, planting of germinants and acclimatization for greenhouse growth. N.B. Continued growth of transgenic plants in greenhouse is managed by the greenhouse facility.
- The transgenic SE-cultures can be cryopreserved and stored as an additional service. N.B. This should be decided at the start of the project.
TIME LINE
- Transformation, selection and propagation of selected tissue until 5-10 individual lines of somatic embryo-cultures are established (3 g of tissue): 3-6 months
- Embryo maturation and germination until germinant (small seedling) is ready to plant ex vitro: 2-4 months
- Acclimatization and establish growth in greenhouse: 4-6 weeks
METHOD OVERVIEW
In the standard conifer transformation method, transgenic plants are obtained through Agrobacterium-mediated transformation of early-stage somatic embryos (in SE-cultures). Early-stage somatic embryos in the selected transgenic lines then progress through development in vitro through embryo-maturation and germination, resulting in an ‘SE-germinant’ that can be acclimatized and transferred to ex vitro conditions for continued growth as a plant in the greenhouse.
Transformation by biolistics is also available.
Transgenic Norway spruce tissue transformed by Agrobacterium procedures: (From left to right) Transformed somatic embryo culture before selection showing transient GUS expression in parts of the cultures; stable GUS expression in the whole culture after selection; mature somatic embryos generated from the stably transformed early stage somatic embryos; stem section with coloring in the vascular tissues, the cortex and the periderm (epidermis). (Sectioning and staining of stem: Marta Derba-Maceluch)
PRICE LIST (internal UPSC)
Transformation (Agrobacterium): 6000 SEK
Includes transformation and propagation until 5-10 individual lines of somatic embryo-cultures are established
Transformation (biolistics): 6000 SEK
Includes transformation and propagation until 5-10 individual lines of somatic embryo-cultures are established
Cryopreservation of somatic-embryo cultures: 2000 SEK
Cryo-pretreatment and storage at -150°C of 5-10 individual lines of somatic embryo-cultures. Ten cryo-vials of each line.
Culture until small seedlings in vitro: 2000 SEK
Continued culture through embryo maturation and germination until germinant (small seedling) is ready to plant ex vitro. Minimum of 30 SE-germinants per line. 2000 SEK per line
Acclimatization and start plant production: 1500 SEK
Planting of SE-germinants, acclimatization and start growth in greenhouse. Minimum of 10 established plants per line. 1500 SEK per line.
The following plant-growth in the greenhouse is the responsibility of the greenhouse and is invoiced accordingly.
Place an order
Fill out the transformation request form below and submit online. Once the request has been reviewed, you will be contacted by Sofie Johansson (
Request form for Spruce transformation
Contact information
Sofie Johansson:
Ulrika Egertsdotter:
Ove Nilsson: