Date of publication: March 28,
2006
Source:
http://gmoinfo.jrc.it/gmp_browse_geninf.asp
Notification number:
B/PT/06/05
Member State:Portugal
Date of Acknowledgement:24/02/2006
Title of the Project:
Testing of maize tolerant to glyphosate herbicide
Proposed period of release From: To:
Name of the Institute(s) or Company(ies): Pioneer
Hi-Bred Sementes de Portugal;
3. Is the same GMPt release planned elsewhere in the
Community?
No
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
|
| maize
|
poaceae |
zea
|
zea
mays |
mays
|
|
2. Description of the traits and characteristics which have
been introduced or modified, including marker genes and previous
modifications:
These maize varieties have been genetically modified to
tolerate application of glyphosate herbicide, which allows the
farmers to use a broad-spectrum, non-selective, systemic
herbicide for the weeding of the maize fields.
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:
The introduced gene is the gat gene from Bacillus sp,
providing tolerance to glyphosate herbicide, along with the
regulatory components necessary for expression.
6. Brief description of the method used for the genetic
modification:
The genetic modification was done using Agrobacterium
transformation method to introduce the DNA insert into the maize
genome. The T-DNA on the Ti plasmid has been replaced by the
construction containing the gat gene along with the regulatory
components necessary for expression.
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:
Several types of trials will be carried out, to evaluate the
nutrient composition profile, protein expression, agronomic
behavior and tolerance to glyphosate of the genetically modified
varieties in comparison with their non-genetically modified
equivalents, to evaluate the residual behavior of glyphosate and
to collect data on the agronomic value of the genetically
modified maize plants.
2. Geographical location of the site:
In 2006, the location of the release sites will be Freguesia
de Vila Nova de Muia, Concelho de Ponte da Barca e Freguesia do
Paço, Concelho de Arcos de Valdevez
3. Size of the site (m2):
In 2006, there will be 2 sites, each sown with up to 500 m²
of each genetically modified maize subject of this notification,
the total trial surface for each site (including all varieties
and borders) being larger.
In the following years, there could be up to 3 sites, each sown
with up to 500 m² of each genetically modified maize subject of
this notification, the total trial surface for each site
(including all varieties and borders) being larger.
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:
Since 2003, field trials have already been conducted at
several locations with these genetically modified maize and no
environmental problems were reported for these trials. The
transgenic plants behaved as conventional maize. They were
indistinguishable from the non-genetically modified maize plants
except for being tolerant to glyphosate herbicide, trait due to
the genetic modification.
Environmental
Impact and Risk Management
Summary of the potential
environmental impact from the release of the GMPts:
Note especially if the introduced traits could directly or
indirectly confer an increased selective advantage in natural
environments; also explain any significant expected
environmental benefits
No risks to human and animal health or the environment from the
deliberate release of genetically modified maize tolerant to
glyphosate herbicide are expected, as per information contained
in the environmental risk assessment included in the
notification.
Brief description of any measures taken for the management of
risks:
In order to limit any pollen flow from the genetically
modified plants, a 400m-isolation distance will be maintained to
any other non-experimental maize crop. In addition, the trial
site will be surrounded by four border rows of conventional
maize of a similar relative maturity that will be also destroyed
at the end of the release.
Seed dispersal of individual kernels does not generally occur.
They are fixed on a cob and enclosed in many husks that protect
the seeds from outside contact. When seeds need to be collected
for analysis; this will be done by sampling the whole ear and
unused seeds will be destroyed.
In case of any emergency, the trial could be stopped by
application of a non-selective herbicide other than glyphosate
or by mechanical destruction, and incorporation into the soil.
At the end of the release, all remaining plant matter that has
not been harvested for analyses will be destroyed by chopping
and incorporating into the soil. No plant or plant product
coming from the trials will enter the food or feed chains.
Volunteer maize will be monitored during the following year. An
herbicide treatment (other than glyphosate) will be used in
order to ensure destruction if needed.
No commercial maize will be cultivated in the trial site the
following year.
Summary of foreseen field trial studies focused to gain new
data on environmental and human health impact from the release:
Not applicable to this release.
Final report
-
European
Commission administrative information
Consent given by the Competent
Authority: Not Known |
