Gentechnik, Mais, Neuralrohrdefekte

[rincewind]

Studien und Links zu dem Thema:

Nähere Informationen zu diesem Thema sowie detaillierte Angaben zu der internationalen Studie finden Sie unter http://www.biosicherheit.de/de/aktuell/646.doku.html

Ein Interview zum Thema ,,Pilzbefall im Maisanbau und verschiedene Möglichkeiten der Bekämpfung" mit Prof. Andreas Schier von der Hochschule für Wirtschaft und Umwelt in Nürtigen-Geislingen finden Sie unter http://www.biosicherheit.de/de/aktuell/590.doku.html


- eine interessante Webseite: http://www.apsnet.org/online/feature/BtCorn/

- Munkvold et al. 1999, Plant Disease Vol. 83 No 2, S. 130ff

- die neusten wissenschaftlichen Daten zu diesem Thema:

Mycotoxin reduction in Bt corn: potential economic, health, and regulatory impacts
- Transgenic Research Vol 15 Number 3, pp277-289, 01.jun.06, Felicia Wu (Via
Agnet)
Environmental, Occupational Health, Graduate School of Public Health, University of Pittsburg

Abstract

Genetically modified (GM) Bt corn, through the pest protection that it
 confers, has lower levels of mycotoxins: toxic and carcinogenic chemicals
 produced as secondary metabolites of fungi that colonize crops. In some
 cases, the reduction of mycotoxins afforded by Bt corn is significant
 enough to have an economic impact, both in terms of domestic markets and
 international trade. In less developed countries where certain mycotoxins
 are significant contaminants of food, Bt corn adoption, by virtue of its
 mycotoxin reduction, may even improve human and animal health. This paper
 describes an integrated assessment model that analyzes the economic and
 health impacts of two mycotoxins in corn: fumonisin and aflatoxin.It was
 found that excessively strict standards of these two mycotoxins could
 result in global trade losses in the hundreds of millions $US annually,
 with the US, China, and Argentina suffering the greatest losses. The
 paper then discusses the evidence for Bt corn's lower
 levels of contamination of fumonisin and aflatoxin, and estimates
 economic impacts in the United States. A total benefit of Bt corn's
 reduction of fumonisin and aflatoxin in the US was estimated at $23
 million annually. Finally, the paper examines the potential policy
 impacts of Bt corn's mycotoxin reduction, on nations that are making a
 decision on whether to allow commercialization of this genetically
 modified crop.


Sehr gut: http://www.transgen.de/pdf/diskurs/Jany_PPP.pdf


http://bcsia.ksg.harvard.edu/BCSIA_content/documents/IJTG_212_2006Paper08.pd
f


http://www.whybiotech.com/index.asp?id=4213

---------
Bakan B, Melcion D, Richard-Molard D, Cahagnier B. Fungal growth and fusarium mycotoxin content in isogenic traditional maize and genetically modified maize grown in France and Spain. J Agric Food Chem. 2002 Feb
13;50(4):728-31

Laboratoire de Microbiologie et Technologie Cerealieres, Institut National de la Recherche Agronomique (INRA), Nantes, France.

Fungi of the genus Fusarium are common fungal contaminants of maize and are also known to produce mycotoxins. Maize that has been genetically modified to express a Bt endotoxin has been used to study the effect of insect resistance on fungal infection of maize grains by Fusarium species and their related mycotoxins. Maize grain from Bt hybrids and near-isogenic traditional hybrids was collected in France and Spain from the 1999 crop, which was grown under natural conditions. According to the ergosterol level, the fungal biomass formed on Bt maize grain was 4-18 times lower than that on isogenic maize. Fumonisin B(1) grain concentrations ranged from 0.05 to
0.3 ppm for Bt maize and from 0.4 to 9 ppm for isogenic maize. Moderate to low concentrations of trichothecenes and zearalenone were measured on transgenic as well as on non-transgenic maize. Nevertheless, significant differences were obtained in certain regions. The protection of maize plants against insect damage (European corn borer and pink stem borer) through the use of Bt technology seems to be a way to reduce the contamination of maize by Fusarium species and the resultant fumonisins in maize grain grown in France and Spain.


http://www.deam.de/news/infos/pilzgift01.htm

http://www.novo-magazin.de/75/novo7532.htm

http://www.apsnet.org/online/feature/BtCorn/1130-02R.pdf

http://www.internutrition.ch/in-news/point/pdf/nov04_d.pdf

http://www.kompetenznetze.de/navi/de/Innovationsfelder/AgrarUndErnaehrungswi
rtschaft/04nachrichten,did=65916.html

http://www.whybiotech.com/html/pdf/Bt_Corn_and_Mycotoxins.pdf

http://ucbiotech.org/resources/presentations/biotech/talks/rotary_shasta.pdf

[amphibol]

Ich glaube kaum, dass so etwas die diffuse Angst der Leute vor "Gen-Mais" verringern wird. Die werden nach wie vor "gen-freien" Mais haben wollen.


Ist aber interessant zu wissen. Danke!

[cohen]

Danke, Rince! 

[Kombe]

schaut mal: http://www.campact.de/gentec/sn8/signer