Date of publication: November 16,
2005
Source:
http://gmoinfo.jrc.it/gmp_browse_geninf.asp
Notification number:
B/SE/05/8615
Member State: Sweden
Date of Acknowledgement: 03/11/2005
Title of the Project: Potato with improved resistance
to Phytophthora infestans
Proposed period of release From:01/01/2006
To:31/12/2010
Name of the Institute(s) or Company(ies): Plant
Science Sweden AB;
3. Is the same GMPt release planned elsewhere in the
Community?
Yes: Germany; Netherlands
4 - Has the same GMPt been notified elsewhere by the same
notifier?
No
Genetically
modified plant
1. Complete name of the
recipient or parental plant(s)
|
Common Name
|
Family Name
|
Genus |
Species
|
Subspecies
|
Cultivar/breeding line
|
| potato
|
solanaceae |
solanum |
solanum tuberosum |
tuberosum |
P698,
P835, P880 |
2. Description of the traits and characteristics which have
been introduced or modified, including marker genes and previous
modifications:
- improved resistance to Phytophthora infestans
- marker gene ahas (tolerance to Imidazolinones) as selection
gene to identify transgenic cells in tissue culture
Genetic
modification
3. Type of genetic
modification:
Insertion;
4. In case of insertion of genetic material, give the source
and intended function of each constituent fragment of the region
to be inserted:
T-DNA borders, pTiT37, for incorporation into plant
chromosome.Recombinant ahas gene, A. thaliana, imidazolinone
tolerance in plant material.Promoter and terminator from
nopaline synthase gene, A. tumefaciens, gene regulation.
Resistance genes Rpi-blb1 and Rpi-blb2, Solanum bulbocastanum,
with endogenous promoters and terminators for improved
resistance to P. infestans
6. Brief description of the method used for the genetic
modification:
Plasmid DNA was introduced into the potato lines by
Agrobacterium-mediated gene transfer technology.
7. If the recipient or parental plant is a forest tree
species, describe ways and extent of dissemination and specific
factors affecting dissemination:
Not applicable.
Experimental
Release
1. Purpose of the release:
- Evaluate resistance to Phytophthora infestans
- Investigate the general agricultural value of the modified
lines
- Produce seed potatoes for future trials
2. Geographical location of the site:
Landskrona, Halmstad, Kristianstad, Lidköping, Skara,
Falköping, Habo, Tidaholm, Motala and Mjölby municipalities.
3. Size of the site (m2):
Max 15 000 m2 at each site annually
4. Relevant data regarding previous releases carried out with
the same GM-plant, if any, specifically related to the potential
environmental and human health impacts from the release:
No previous release of the same GM-plant material. No adverse
impacts on the environment or human health have been recorded
from other potato lines with ahas gene in previous field trials
in Sweden since 2002 or with introduced Rpi-blb2 gene during
2005.
Environmental
Impact and Risk Management
Summary of the potential
environmental impact from the release of the GMPts:
The genetically modified potato lines contain two R-genes,
Rpi-blb1 and Rpi-blb2, from S. bulbocastanum for conferring
improved resistance to P. infestans. Many conventional potato
varieties also contain additional R-genes that have been
introgressed from wild Solanum species. An intended effect of
the introduced trait is an increased performance in potato
fields exposed to Phytophthora infestans. This possible
selective advantage, however, is of importance only in the
agricultural field, and will not be decisive for the
survivability in the surrounding environment. The ahas gene
expressed in the potato plants imparts tolerance to the
herbicidal active substance Imazamox (Imidazolinone herbicide)
to the shoots during the selection process in cell culture. This
confers no selective advantage in the field or outside the field
since Imidazolinone herbicides are not approved for use on crops
in Sweden and since no field tolerance is expected in the potato
plants. No difference with respect to persistence in
agriculturally utilized habitats or invasiveness into natural
habitats as compared to conventional potato varieties is
expected.
Through the measures that are taken during the release,
isolation distance from other cultivated potatoes, and absence
of wild species, the possibility of any gene transfer can be
virtually ruled out. Even in the very improbable event that
pollen were to be transferred to a potato plant outside the
trial, no consequences are to be expected, since agricultural
potato propagation takes place via tubers and not via seeds.
The interactions of the genetically modified potato line with
non-target organisms and the effects resulting from this will be
comparable to those with conventional potato varieties.
Furthermore, no toxic or allergenic effects are expected on the
basis of the improved resistance to P. infestans or the
expressed AHAS protein. No effects on biogeochemical processes
are expected, other than those which apply also to conventional
potatoes.
Brief description of any measures taken for the management of
risks:
- Isolation distance: 20 m
- Careful harvest to avoid volunteers
- Transportation in labeled containers in separate vehicles,
closed containers or double closed sacks if transportation with
other material
- Adjusted crop rotation: fallow field the following year, no
potato crop for one additional year
- Post harvest monitoring and destruction of any volunteers
- Complete destruction of plant waste material
Summary of foreseen field trial studies focused to gain new
data on environmental and human health impact from the release:
Not planned.
Final report
European
Commission administrative information
Consent given by the Competent
Authority: Not Known |
