A new report on gene flow from experimental GM field trials
in the US to sexually compatible wild plants, has just been
by the Center for Food Safety in Washington, DC.
The report's author is Doug Gurian
ormerly with the U.S. Environmental
Protection Agency, where he was responsible for assessing
human health and environmental ris
plants and microorganisms, and for developing
His report concludes that given the lar
trials, some of which are on a massive scale and many of
which contain genes that may spread in wild relative
permanent escape of largely untested experimental genes
is virtually inevitable given USDA's current leaky
ements and inadequate safety testing.
Here's the press statement from CFS
Before genetically engineered (GE) crops are marketed,
s conduct field trials of these
experimental GE varieties for several years. Field trials
include all outdoor cultivation of
erimental GE crops, and thousands have been planted
across the country since the mid
Because research on these crops is
are often largely unknown. But a new report, "Contaminating
the Wild?," from the Center for Food Safety
despite unknown risks, U.S. Department of Agriculture
(USDA) regulations cannot be relied upon to keep
enes from escaping from field trial crops into
related wild plants. This process, called "gene flow," occurs
perimental crops fertilize wild species
related to crops such as wheat, grapes or carrots.
Experimental genes that make their w
relatives may become a permanent part of the
landscape because, unlike most crops, these wild plant
n grow without cultivation by farmers.
Anyone who has seen fields of Queen Anne's lace (a wild
relative of carrots) can underst
prolific these wild relatives can be. And once they escape
from crops, some of these genes could spread through the
ronment, where they may harm animals and plants.
As noted in a recent critical report by the USDA Inspector
General (IG), for the vast majority of field
trials issued as "notifications," gene confinement
measures are rarely reviewed by
"Contaminating the Wild?" also shows that risk
assessments are not generally performed, and
are examined, the process is usually
USDA has assured the public that the risks from
experimental genes are insig
nificant because they are
confined to the field trial site. But the many cases of
contamination from GE crops seriously challeng
assertion. Most startling was gene flow from a field trial of
tolerant creeping bentgrass that
accepted separation from wild
relatives by at least 13 miles.
"Contaminating the Wild?" asks whether g
similarly occur from some of the thousands
of previous field trials, and by extension, whether gene flow
en in the future. The report considers these
questions through a detailed examination of the scientific
previous field trials, and concludes
that untested genes from field trials of crops with wild
relatives may breech their confin
*There have been at least 1710 field trials of 20 types of
n states where one or more wild relatives grow.
These have included 170 for creeping bentgrass, 332 for
among other crops that have
serious weeds as wild relatives.
*The USDA/APHIS confinenement standards cannot
nt gene flow will be prevented.
Review of the scientific literature and USDA Environmental
Assessments shows that gene flow can
confinement distances accepted by USDA.
*Many field trials contain genes that may provide
o wild relatives, and can thereby spread
through the wild population, even if initial gene flow occurs
at low levels. For exampl
e, there have been about 600 field
trials for biotic and abiotic stress resistance genes,
identified by the National Academy of
properties that may facilitate spreading through wild
*As with the escaped creeping bentgrass exa
News on genetically modified plants….