Transgenes migrate into old races of maize.(discovery in corn grown in Mexico)(Brief Article)

From: Science News | Date: December 1, 2001| Author: | Copyright information

On multiple occasions, genes from new-fangled corn produced via bioengineering have slipped into the traditional races of maize grown in southern Mexico.

That's one of the conclusions of the first scientific paper documenting transgenic corn leaking genes into old maize varieties. Such leaks seem "relatively common," report David Quist and Ignacio H. Chapela of the University of California, Berkeley in the Nov. 29 NATURE.

Concerned by early results of this study, the Mexican government investigated. In mid-September, it announced finding bits of a distinctive transgene ...

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Intraspecific gene flow in bread wheat as affected by reproductive biology and pollination ecology of wheat flowers. (Review & Interpretation).
; ...Thus an understanding of pollen mediated gene flow between existing wheat cultivars would...levels for both GM and non-GM cultivars. Gene flow is the movement of gametes, zygotes...of the new locality (Slatkin, 1987). Gene flow is a natural biological process and in...
Gene flow in wheat at the field scale.(Crop Breeding, Genetics & Cytology)
; ...currently being conducted to understand gene flow and agronomic issues surrounding the...wheat. Research to date has not measured gene flow, the exchange of genes between different...distances in wheat. In wheat, successful gene flow depends upon the receptivity of the stigmas...
FRENCH SEEDS BAN EXTENDED.
; ...to lift a ban on the cultivation of transgenic corn varieties, dashing industry hopes...State Court suspended cultivation of transgenic corn on October 4 after activist group...strains of Bacillus thuringiensus transgenic corn designed by Novartis but was widened...
Pollen-mediated gene flow from blue aleurone wheat to other wheat cultivars.
; IN THE PAST, gene flow among cultivars of major field crops...with seed production. Low levels of gene flow among commercial fields of crops such...higher purity standards thus making gene flow among fields a more important issue...
Comments on "An empirical model for pollen-mediated gene flow in wheat" (Crop Sci. 45:1286-1294).(Letter to the editor)
; ...providing estimations and predictions of gene flow at various temporal and spatial scales...model existed concerning pollen-mediated gene flow (PMGF) in wheat. This led the authors...actual measure of long distance PMGF. Gene flow is a stochastic process and adequate...
Report: Gene flow from GM crops poses little threat
; Gene flow from GM crops to their wild relatives...for Agricultural Science and Technology. Gene flow, defined as the movement of genes from...resulted in much closer monitoring of gene flow than has been done in the past," said...
Controlling for the Effects of History and Nonequilibrium Conditions in Gene Flow Estimates in Northern Bullfrog (Rana catesbeiana) Populations
; ...expansion can confound measurements of gene flow among populations in previously glaciated...regions. We determined the scale at which gene flow can be estimated among breeding aggregations...at or near equilibrium. High levels of gene flow were measured using traditional ...
WHEN CORN KILLS A MONARCH
; ...the journal Nature, reports that a transgenic corn, widely used by farmers in the Midwest...80-million-acre U.S. crop are being planted with transgenic corn, which was introduced only three years...Novartis Corp., a manufacturer of the transgenic corn, played down the significance of ...
Mexican Maize Not Under Threat; Biologically Diverse Gene Flow Is Natural And Expected, Not "Contamination"
; ...misrepresentations of this particular study, gene flow from biotechnology-improved corn, as...through further studies. However, if indeed gene flow is demonstrated, there is no reason to...vitality of Mexican landraces, and labeling gene flow as "contamination," as activists have...
Evolution of Fitnesses and Allele Frequencies in a Population With Spatially Heterogeneous Selection Pressures
; ABSTRACT The level of gene flow considerably influences the outcome of evolutionary...heterogeneity in selection pressures; low levels of gene flow may allow local adaptation whereas high levels of gene flow may oppose this process thus preventing the...