Horseweed with reduced susceptibility to glyphosate found in the Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F09%3A00000716" target="_blank" >RIV/00027006:_____/09:00000716 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389030:_____/09:00335901

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Horseweed with reduced susceptibility to glyphosate found in the Czech Republic

Popis výsledku v původním jazyce

Plants of horseweed (Conyza canadensis) apparently resistant (R) to glyphosate were found at railway station in the Czech Republic. To compare, plants expected to be susceptible (S) were collected in areas where no herbicides had been used. Plants of both sets were treated at the rosette stage with glyphosate at the recommended dose. S plants died, while leaves of R plants remained green and new leaves were grown a few weeks after glyphosate application. There were differences in the accumulation of shikimate between S and R plants 3-10 days after treatment, it decreased more than 4-fold in R plants, while in S plants increased 3-fold. A conserved region of the epsps gene, in which mutations are known to confer resistance, was amplified from both S andR plants and sequenced, but no changes in the encoded amino acid sequence were found. Our results suggest that the reduced susceptibility to glyphosate may be due to impaired herbicide translocation.

Název v anglickém jazyce

Horseweed with reduced susceptibility to glyphosate found in the Czech Republic

Popis výsledku anglicky

Plants of horseweed (Conyza canadensis) apparently resistant (R) to glyphosate were found at railway station in the Czech Republic. To compare, plants expected to be susceptible (S) were collected in areas where no herbicides had been used. Plants of both sets were treated at the rosette stage with glyphosate at the recommended dose. S plants died, while leaves of R plants remained green and new leaves were grown a few weeks after glyphosate application. There were differences in the accumulation of shikimate between S and R plants 3-10 days after treatment, it decreased more than 4-fold in R plants, while in S plants increased 3-fold. A conserved region of the epsps gene, in which mutations are known to confer resistance, was amplified from both S andR plants and sequenced, but no changes in the encoded amino acid sequence were found. Our results suggest that the reduced susceptibility to glyphosate may be due to impaired herbicide translocation.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GF - Choroby, škůdci, plevely a ochrana rostlin

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Agricultural and Food Chemistry

ISSN

0021-8561

e-ISSN

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Svazek periodika

57

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000268537300065

EID výsledku v databázi Scopus

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