background preloader

Glyphosate et résistance en Australie

Facebook Twitter

ABC_NET_AU 02/12/19 Metabolism-based glyphosate resistance discovered in weed in Western Australia's Ord irrigation scheme. Researchers have claimed a world first in herbicide resistance, after discovering a tropical weed in Western Australia's far north that literally eats glyphosate. key points barnyard grass glyphosate resistant Key points: Barnyard grass in the Ord irrigation scheme is the first weed scientifically proven to metabolise glyphosateMany plants have evolved resistance to glyphosate but none have done it by metabolismResearchers have also said farmers should use glyphosate less frequently to lessen the chance of resistance by weeds Glyphosate, commonly known as Roundup, has been the most frequently used herbicide on the planet, mainly because most plants cannot metabolise it, or break it down.

ABC_NET_AU 02/12/19 Metabolism-based glyphosate resistance discovered in weed in Western Australia's Ord irrigation scheme

But a barnyard grass population in the Ord irrigation scheme is the first weed scientifically proven to be the exception to the rule. "In research you get excited about new discoveries that weren't known previously; and in the world of science this is indeed a first," he said . UNIVERSITY OF QUEENSLAND - 2006 - Thèse en ligne : Weed resistance risk management in Glyphosate-resistant cotton.

NEW ZEALAND PLANT PROTECTION - 2016 - Strategies to manage the evolution of glyphosate resistance in New Zealand. New Zealand Plant Protection 69: 252 - 257 (2016) Strategies to manage the evolution of glyphosate resistance in New Zealand. ADELAIDE RESEARCH - 2006 - Thèse en ligne : Weed resistance risk management in glyphosate-resistant cotton. UNIVERSITY OF ADELAIDE - 2013 - Thèse en ligne : Characterisation and management of glyphosate resistant fence line populations of annual ryegrass (Lolium rigidum Gaud.)

GRDC 03/06/14 Red brome confirmed resistant to glyphosate in Western Australia. One population of red brome (Bromus rubens) has been confirmed resistant to glyphosate in the central wheatbelt of Western Australia.

GRDC 03/06/14 Red brome confirmed resistant to glyphosate in Western Australia

Red brome with giant brome in the background. Photo by Agronomo. This is the first red brome population to be confirmed resistant to glyphosate in the world and is the third glyphosate resistant grass weed species found in Western Australia. “This finding is of particular concern for no-till farmers who rely heavily on glyphosate for grass weed control prior to sowing and in non-crop areas such as fence lines and firebreaks,” Department of Agriculture and Food, Western Australia (DAFWA) researcher Abul Hashem said.

Dr Hashem and DAFWA’s Catherine Borger discovered the glyphosate resistant red brome under a Grains Research and Development Corporation (GRDC) funded project also involving the Australian Herbicide Resistance Initiative (AHRI). Photo by Catherine Borger. GRDC Project Code DAW535, DAW713, DAW00114, DAW00158, UWA00146 Region National, West. GRDC - winter 2013 - survey find glyphosate resistant ryegrass is widespread in cropping padocks in the South East of South Australia. QUEENSLAND GOVERNEMENT - Glyphosate Resistance Toolkit. Rate your glyphosate resistance risk About the toolkit This online toolkit is for both growers and advisors to check the level of risk for developing glyphosate-resistant weeds on their farm.

QUEENSLAND GOVERNEMENT - Glyphosate Resistance Toolkit

It is divided into two sections: AGRIC_WA_GOV_AU 04/06/14 Crop hygiene essential to reduce the spread of glyphosate resistance. Agribusiness Crop Updates 2009 (Australie) - Risk of glyphosate resistance in wide-row lupin cropping systems. Australian Herbicide Resistance Initiative (AHRI) 21/09/10 New paper "Evolution in action - plants resistant to herbicides" Protein kinase GCN2 mediates responses to glyphosate in Arabidopsis Isabel Faus, Ana Zabalza, Julia Santiago, Sergio G Nebauer, Mercedes Royuela, Ramon Serrano, and Jose Gadea BMC Plant Biology Vol. 15 (2015) A collection of cytochrome P450 monooxygenase genes involved in modification and detoxification of herbicide atrazine in rice (Oryza sativa) plants Li Rong Tan, Yi Chen Lu, Jing Jing Zhang, Fang Luo, and Hong Yang Ecotoxicology and Environmental Safety Vol. 119 (2015) : 25-34.

Australian Herbicide Resistance Initiative (AHRI) 21/09/10 New paper "Evolution in action - plants resistant to herbicides"

Australian glyphosate sustainability working group - Glyphosate resistant weeds in Australia. DPI_NSW_GOV_AU 24/02/14 World's first cases of sowthistle populations resistant to glyphosate. 24 Feb 2014 Department of Primary Industries (DPI) has confirmed the world’s first cases of glyphosate resistance in two sowthistle populations in the State’s north west.

DPI_NSW_GOV_AU 24/02/14 World's first cases of sowthistle populations resistant to glyphosate

DPI Technical Specialist Weeds, Tony Cook based at Tamworth Agricultural Institute, said the discovery is a real concern to grain and cotton farmers in the northern grain region. “Due to its wind borne seed, glyphosate resistant sowthistle populations will spread rapidly, similar to fleabane,” Mr Cook said. “Sowthistle is a seasonal weed, which through reduced tillage agriculture and repeated use of glyphosate has aided its spread in recent years. “It is commonly found around buildings, fencelines and roadsides where glyphosate is frequently used. “Now that we have identified the problem landholders are able to make critical decisions regarding weed management on their property.” “We have found that timing is crucial and to treat the plants at the early rosette stage to ensure effective control.

AUSTRALIAN GOVERNMENT 18/12/12 One in 10 weeds high risk for glyphosate resistance. Researchers say 23 weed species are now at high risk of developing glyphosate resistance, including several important grasses and damaging environmental weeds like fireweed and parthenium weed.

AUSTRALIAN GOVERNMENT 18/12/12 One in 10 weeds high risk for glyphosate resistance

Andrew Storrie, Australian Glyphosate Sustainability Working Group executive officer says most of the weeds tested are found across Australia and one in 10 weed species have a high risk of glyphosate resistance. “While resistance to glyphosate in cropping has been making headlines around the world, this study suggests it could become a problem in any Australian weed management situation,” Mr Storrie says. The project was also supported by the Cotton Catchment Communities Cooperative Research Corporation. The aims and outcomes of this program strongly compliment Grains Research and Development Corporation (GRDC) investments in managing herbicide resistance.

“Where a species is at high risk of developing glyphosate resistance, it is vital not to rely on a single herbicide,” Dr Thornby said. Contact: European Weed Research Society Weed Research 2003 43, 418–427 Simulating evolution of glyphosate resistance in Lolium rigidum II. GLYPHOSATERESISTANCE_ORG_AU 28/05/12 Survey discovers roadside glyphosate resistance time bomb.

NATIONAL GLYPHOSATE SUSTAINABILITY WORKING GROUP - JUIN 2007 - Are these Australia’s next glyphosate resistant weeds? Le site Australian Glyphosate Sustainability Working Group. BE Australie 59 >> 8/09/2008 Biologie - Biodiversité - Urochloa panicoides est devenue résistante au glyphosate. Biologie - BiodiversitéUrochloa panicoides est devenue résistante au glyphosate La résistance au glyphosate (C3H6NO5P ou N-phosphono-méthylglycine), un herbicide systémique non sélectif, a été rapportée pour la première fois en 1996 dans un verger australien chez l'ivraie vraie (Lolium rigidum).

BE Australie 59 >> 8/09/2008 Biologie - Biodiversité - Urochloa panicoides est devenue résistante au glyphosate

La résistance d'une autre espèce de graminée connue sous le nom de panic des cultivateurs (Echinochloa colona) a été confirmée en Australie en 2007. Un rapport récent (25 août 2008) issu par le CRC for Australian Weed Management (Weeds CRC), l'University d'Adélaïde et le groupe de travail national sur l'usage du glyphosate (Glyphosate Sustainability Working Group) a confirmé, pour la première fois dans le monde, la résistance à cet herbicide d'une population d'Urochloa panicoides dans des jachères d'été, en Nouvelle-Galles du Sud. Les stratégies de lutte contre l'ivraie vraie et Urochloa panicoides conseillées par les spécialistes sont consultables à l'adresse internet suivante : University of Western Australia - AOUT 2006 - Social Costs of Herbicide Resistance: the Case of Resistance to Glyphosate.