Hi Joe,
Increasing glyphosate resistance is a known factor in this
country. Would you elaborate on what the formation of a "metabolic
herbicidal residue" is?
much thanks,
Steve Gilman
Ruckytucks Farm
On Jun 23, 2006, at 12:00 AM, SANET-MG automatic digest system wrote:
From: jcummins <jcummins@UWO.CA <mailto:jcummins@UWO.CA>>
Subject: epidemic of glyphosare resistance caused by increased
glyphosate use
doi:10.1016/j.tplants.2006.05.004
Trends in Plant Science
Plant biotechnology: ecological case studies on herbicide resistance
Heinrich Sandermanna, b,
aecotox.freiburg, Schubertstr. 1, D-79104 Freiburg, Germany
bGSF-National Research Centre, Institute of Biochemical Plant Pathology,
Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany
Available online 16 June 2006.
The emerging field of molecular ecology aims to improve the ecological
predictability of transgenic crop plants. The most widely cultivated
lines are Roundup-Ready® plants, which are genetically modified to be
resistant to the broad-spectrum herbicide glyphosate. Recent
publications demonstrate two ecological effects that were not
anticipated: the widespread emergence of glyphosate-resistant weed
biotypes and the formation of a metabolic herbicidal residue. Both
effects appear to be due to the increased use of glyphosate rather than
the genetic modification in the transgenic crop plant. With one
prominent exception, opinions collected from the literature point
towards a certain degree of resistance mismanagement and an inadequate
testing of the ecological effects of extensive glyphosate use.
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