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Titolo:
Relative biological efficiency for the induction of various gene mutationsin normal and enriched with B-10 Tradescantia cells by neutrons from Cf-252 source
Autore:
Cebulska-Wasilewska, A; Schneider, K; Kim, JK;
Indirizzi:
Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland Henryk Niewodniczanski Inst Nucl Phys Krakow Poland hys, Krakow, Poland Korean Atom Energy Res Inst, Taejon, South Korea Korean Atom Energy Res Inst Taejon South Korea nst, Taejon, South Korea
Titolo Testata:
MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS
fascicolo: 1-2, volume: 474, anno: 2001,
pagine: 57 - 70
SICI:
1386-1964(20010301)474:1-2<57:RBEFTI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MUTAGENICITY; BIOASSAY;
Keywords:
Tradescantia cells; relative biological effectiveness (RBE); number of stamen hairs (NoH);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Cebulska-Wasilewska, A Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland Henryk Niewodniczanski Inst Nucl Phys Krakow Poland
Citazione:
A. Cebulska-Wasilewska et al., "Relative biological efficiency for the induction of various gene mutationsin normal and enriched with B-10 Tradescantia cells by neutrons from Cf-252 source", MUT RES-F M, 474(1-2), 2001, pp. 57-70

Abstract

The effectiveness of neutrons from a Californium-252 source in the induction of various abnormalities in the Tradescantia clone 4430 stamen hair cells (Trad-SH assay) were studied. A special attention was paid to check whether any enhancement in effects is visible in the cells enriched with boron ions. Inflorescences. normal or pretreated with chemicals containing boron, were irradiated in the air with neutrons from a Cf-252 source at KAERI, Taejon, Korea. To estimate the relative biological effectiveness (RBE) of the beam under the study, numbers of Tradescantia inflorescence without chemical pretreatment were irradiated with various doses of X-rays. The ranges of radiation doses used for neutrons were 0-1.0 Cy and for X-rays 0-0.5 Gy. Following the culturing according to standard procedures screening of gene and lethal mutations in somatic cells of stamen hairs was done in the extended period, between days 7 and 19 after exposures. Maximal RBE values for theinduction of pink, colorless and lethal mutations were evaluated from comparison of the slopes in linear parts of the dose response curves obtained after irradiation with X-rays and californium source. The RBEmax value or the induction of gene mutation was estimated as 7.2 comparing the value 5.6 in the studies reported earlier. The comparison of dose-response curves and its alteration, due to changes in the cells and plants environment during and after irradiation, explains the observed differences. Inflorescence pretreated with borax responded to neutrons differently depending on the biological end points. Although: for the induction of pink mutations no significant difference was observed. though, in the case of cell lethality, pretreated with boron ion plants have shoved a statistically significant increase of the RBE value from 5.5 to 34.7, and in the case of colorless mutations from 1.6 to 5.6. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 14/07/20 alle ore 10:18:19