background preloader

Maïs transgénique (généralités)

Facebook Twitter

EFSA 13/01/21 Assessment of genetically modified maize 1507 × MIR162 × MON810 × NK603 and subcombinations, for food and feed uses, under Regulation (EC) No 1829/2003 (application EFSA‐GMO‐NL‐2015‐127) REVISTA AGROGEOAMBIENTAL - 2019 - Transgenic events interference on maize morphological and productive attributes. SCIENCEMAG 04/11/19 New genetically modified corn produces up to 10% more than similar types. Supporters of genetic engineering have long promised it will help meet the world’s growing demand for food.

SCIENCEMAG 04/11/19 New genetically modified corn produces up to 10% more than similar types

But despite the creation of many genetically modified (GM) pest- and herbicide-resistant crops, scientists haven’t had much success with boosting crop growth. Now, researchers have for the first time shown they can reliably increase corn yields up to 10% by changing a gene that increases plant growth—regardless of whether growing conditions are poor or optimal. “It’s incredible,” says Kan Wang, a molecular biologist at Iowa State University in Ames who was not involved in the new study. Aside from increasing corn harvests, she says, the new modifications should inspire other researchers in the quest for coaxing higher yields out of other crops. The world’s most widely planted GM crops, including soybean, corn, and cotton, were created with a few relatively simple genetic tweaks.

The increased growth is due to several factors. The increased growth is due to several factors. BE Etats-Unis 397 >> 13/03/2015 Maïs OGM : une amorce de retour aux variétés conventionnelles aux USA ? Recherche agronomique/Science des alimentsMaïs OGM : une amorce de retour aux variétés conventionnelles aux USA ?

BE Etats-Unis 397 >> 13/03/2015 Maïs OGM : une amorce de retour aux variétés conventionnelles aux USA ?

En 2013, les agriculteurs américains ont cultivé environ 69 millions d'hectares en cultures transgéniques, soit un peu plus de la surface totale de la France. Cela représente environ la moitié des terres agricoles cultivées des Etats-Unis. Les principales cultures concernées sont le coton, le soja et le maïs. Pour cette dernière, l'évolution a été constante : selon le Département américain de l'agriculture (USDA), 88% du maïs planté aux Etats-Unis en 2011 et 2012 était génétiquement modifié; en 2013, le pourcentage est passé à 90, et la tendance à la hausse s'est poursuivie en 2014, avec 93 pour cent de la superficie de maïs semée. [1] et [2] Cependant, le gigantisme de la surface plantée en maïs (plus de 39 millions d'hectares) empêche de révéler certaines initiatives locales et régionales qui tendent à renverser la tendance.

La marche est encore longue. PLANT PHYSIOLOGY 28/04/16 A Foxtail mosaic virus Vector for Virus-Induced Gene Silencing in Maize. © 2016 American Society of Plant Biologists.

PLANT PHYSIOLOGY 28/04/16 A Foxtail mosaic virus Vector for Virus-Induced Gene Silencing in Maize

All rights reserved. Yu Mei (yumei@iastate.edu), Chunquan Zhang (czhang@alcorn.edu), Bliss M. Kernodle (kernodle@iastate.edu), John H. Hill (johnhill@iastate.edu) and Steven A. Whitham (swhitham@iastate.edu) + Author Affiliations * Corresponding Author; email: swhitham@iastate.edu. NATURE SCIENTIFIC REPORTS 15/02/18 Impact of genetically engineered maize on agronomic, environmental and toxicological traits: a meta-analysis of 21 years of field data.

Composition of the database To date, a considerable number of scientific articles on GE maize is present in the literature (6,006 publications examined).

NATURE SCIENTIFIC REPORTS 15/02/18 Impact of genetically engineered maize on agronomic, environmental and toxicological traits: a meta-analysis of 21 years of field data

However, on the basis of the criteria adopted for data selection, only 76 publications were eligible for the meta-analyses. This selection suggests there is a need for more field research with a wider geographic coverage and having appropriate comparators and field design allowing robust statistical analyses. It is interesting to note that in Europe there is a relatively large number of field studies carried out in several European Union member states despite GM maize is extensively cultivated only in Spain, due to the national legislative constraints in the other countries.

BMC PLANT BIOLOGY 07/08/19 Genetic variation assessment of stacked-trait transgenic maize via conventional breeding. Molecular characterization of stacked-trait transgenic maize 12–5 × IE034.

BMC PLANT BIOLOGY 07/08/19 Genetic variation assessment of stacked-trait transgenic maize via conventional breeding

AFRICAN JOURNAL OF BIOTECHNOLOGY 29/08/18 Detection of genetically modified DNA in processed maize and soybean products in Nigeria. CORNELL_EDU 22/02/19 GMO maize advancing in Kenya. Kenyan smallholder farmers may soon benefit from a maize variety that can tolerate drought and protect itself against the devastating stem borer and fall armyworm pests.

CORNELL_EDU 22/02/19 GMO maize advancing in Kenya

Research is progressing well on the genetically modified (GM) TELA maize, revealed James Karanja, principal investigator of the TELA project. The research outcome will contribute to better food availability and affordability, while bridging the country’s maize production gap. As such, the TELA project aligns with Kenyan President Uhuru Kenyatta’s “Big 4” agenda of food security, manufacturing, affordable housing and affordable health care, Karanja said. GENES 17/03/19 Construction of Marker-Free Genetically Modified Maize Using a Heat-Inducible Auto-Excision Vector. Applied Research & Agrotechnology - 2019 - Response of maize crop hybrids, with different transgenic events, to inoculation with Azospirillum brasilense. BARTCHECHEN, A.; FIORI, C.

Applied Research & Agrotechnology - 2019 - Response of maize crop hybrids, with different transgenic events, to inoculation with Azospirillum brasilense

C. L.; WATANABE, S. H. GUARIDO, R. C. BASHAN, Y. BRUM, M. BRUSAMARELLO-SANTOS, L. CONAB. EMBRAPA. ETESAMI, H. FANCELLI, A. GALINDO, F. SCIENTIFIC REPORTS 15/02/18 Impact of genetically engineered maize on agronomic, environmental and toxicological traits: a meta-analysis of 21 years of field data. Composition of the database To date, a considerable number of scientific articles on GE maize is present in the literature (6,006 publications examined).

SCIENTIFIC REPORTS 15/02/18 Impact of genetically engineered maize on agronomic, environmental and toxicological traits: a meta-analysis of 21 years of field data

However, on the basis of the criteria adopted for data selection, only 76 publications were eligible for the meta-analyses. This selection suggests there is a need for more field research with a wider geographic coverage and having appropriate comparators and field design allowing robust statistical analyses. It is interesting to note that in Europe there is a relatively large number of field studies carried out in several European Union member states despite GM maize is extensively cultivated only in Spain, due to the national legislative constraints in the other countries.

Moreover, there is a need to publish research data in a more standardized way, e.g. providing raw data with at least three replicates, allowing the calculation of variance. Effects on grain yield Effects on crop protection chemicals Effects on quality traits.