DNA damage induced by indirect and direct acting mutagens in catalase-deficient transgenic tobacco Cellular and acellular Comet assays.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F03%3A56033036" target="_blank" >RIV/61389030:_____/03:56033036 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

DNA damage induced by indirect and direct acting mutagens in catalase-deficient transgenic tobacco Cellular and acellular Comet assays.

Popis výsledku v původním jazyce

We have measured the level of DNA damage induced by treating roots (cellular Comet assay) and isolated root nuclei (acellular Comet assay) of catalase-deficient (CAT1AS) and wild-type (SR1) tobacco with the promutagen o-phenylenediamine (o-PDA) and the direct acting genotoxic agents hydrogen peroxide and ethyl methanesulphonate (EMS). The roots of CAT1AS have about 60% less catalase activity compared to the roots of SR1. The promutagen o-PDA applied on tobacco roots induced significantly higher levels of DNA damage in the CAT1AS transgenic line than in SR1, while after application of o-PDA on isolated root nuclei, no DNA damage could be detected. In the catalase-deficient line CAT1AS about six-fold lower concentrations of H2O2 are sufficient to inducethe same levels of DNA damage as in SR1. By contrast, after treatment of isolated root nuclei with H2O2 no difference in the induced levels of DNA damage was observed between CAT1AS and SR1. The DNA damaging effect of EMS was not affected

Název v anglickém jazyce

DNA damage induced by indirect and direct acting mutagens in catalase-deficient transgenic tobacco Cellular and acellular Comet assays.

Popis výsledku anglicky

We have measured the level of DNA damage induced by treating roots (cellular Comet assay) and isolated root nuclei (acellular Comet assay) of catalase-deficient (CAT1AS) and wild-type (SR1) tobacco with the promutagen o-phenylenediamine (o-PDA) and the direct acting genotoxic agents hydrogen peroxide and ethyl methanesulphonate (EMS). The roots of CAT1AS have about 60% less catalase activity compared to the roots of SR1. The promutagen o-PDA applied on tobacco roots induced significantly higher levels of DNA damage in the CAT1AS transgenic line than in SR1, while after application of o-PDA on isolated root nuclei, no DNA damage could be detected. In the catalase-deficient line CAT1AS about six-fold lower concentrations of H2O2 are sufficient to inducethe same levels of DNA damage as in SR1. By contrast, after treatment of isolated root nuclei with H2O2 no difference in the induced levels of DNA damage was observed between CAT1AS and SR1. The DNA damaging effect of EMS was not affected

Druh

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

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

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Projekt

<a href="/cs/project/GA521%2F02%2F0400" target="_blank" >GA521/02/0400: Genotoxicita mutagenů zevního prostředí detekovaná u vyšších rostlin pomocí molekulárně-biologických metod</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název periodika

Mutation research

ISSN

1383-5718

e-ISSN

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Svazek periodika

535

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

187-193

Kód UT WoS článku

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EID výsledku v databázi Scopus

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