Further yearly analyses of spontaneous pink mutant events in the stamen hairs of Tradescantia clone BNL 4430 cultivated in the NSC growth chamber
スポンサーリンク
概要
- 論文の詳細を見る
In order to confirm the results obtained in the previous 1-year-term (December 12, 1998, through December 10, 1999) scorings and analyses of spontaneous pink mutant events (PMEs) in the stamen hairs of Tradescantia clone BNL 4430 cultivated in a nutrient solution circulating (NSC) growth chamber, similar scorings and analyses were continued for another 52-week period from December 11, 1999, through December 8, 2000. The environmental conditions were not changed, except for a minor modification in the method of supplying the nutrient solution used. During the scoring period, 732,128 stamen hairs with an average cell number of 24.90 cells were observed, and 2,368 PMEs were detected. The overall spontaneous somatic mutation frequency was 1.35 +/- 0.03 PMEs per 10(4) hair-cell divisions, which was significantly lower than the value of 1.56 +/- 0.03 determined in the previous 52-week period, and the frequencies were lower during April through September than in other months, the period showing lower frequencies lasting 1-month longer than in the previous year. The present results reconfirmed the occurrence of a clear seasonal variation in the spontaneous mutation frequency in the NSC growth chamber, and the lower overall frequency, probably related to the minor modification in supplying the nutrient solution, is helpful for conducting mutagenicity tests at low levels, offering a lower background level. The analyses of the sectoring patterns of all these PMEs showed that the most of the 203 cases of multiple (two to five) pink sectors observed in the same stamen hairs (scored as 253 PMEs for calculating mutation frequency) were the results of events involving somatic recombinations occurred in single cells or cell lineages, rather than those of two or more independent somatic mutations occurred in different cells, agreeing with our previous study, and the significance of somatic recombinations in causing single PMEs was also reconfirmed.
- The Genetics Society of Japanの論文
著者
-
Ichikawa Sadao
Laboratory Of Generics Department Of Regulation Biology Faculty Of Science Saitama University
-
WUSHUR Sherengul
Department of Biology, Ochanomizu University
-
Wushur Sherengul
Department Of Biology Ochanomizu University
関連論文
- Variation of spontaneous somatic mutation frequency in the stamen hairs of Tradescantia clone BNL 02
- 植物における放射線生物学的研究〔英文〕-4-
- ビキニ土壌で栽培したムラサキツユクサの雄蕊毛における体細胞突然変異頻度〔英文〕
- ムラサキツユクサの易変株および安定株の雄蘂毛における低線量ガンマ線による体細胞突然変異頓度の比較〔英文〕
- 易変性ムラサキツユクサKU20株の雄蘂毛における自然体細胞突然変異頻度の変動〔英文〕
- 低レベルのガンマ線を照射したムラサキツユクサKU7およびKU9株の雄蘂毛における体細胞突然変異率〔英文〕
- ムラサキツユクサ雄蕊毛における低線量域での体細胞突然変異率 低い突然変異倍加線量の検出〔英文〕
- ムラサキツユクサ雄蕊毛における低線量率低線量域での体細胞突然変異率〔英文〕
- Triticum boeoticumおよびその同質四倍体の浸水種子における14.1MeV速中性子と137Csガンマ線の生物効果比〔英文〕
- Tradescantia reflexaの雄芯毛における14.1MeV速中性子と137Csガンマ線の生物効果比〔英文〕
- 一在来コムギ品種における誘発突然変異形質を支配する染色体の同定〔英文〕
- 普通コムギの一在来品種で得られた放射線誘発突然変異体〔英文〕
- Karyotypes and Giemsa C-banding patterns of Zebrina pendula, Z-purpusii and Setcreasea purpurea, compared with those of Tradescantia ohiensis
- Effects of X-ray dose fractionations with various intervals in inducing somatic mutations in the stamen hairs of Tradescantia clone KU 9
- ムラサキツユクサKU27,BNL4430両株の雄蘂毛におけるMMSとX線の体細胞突然変異誘発に関する相乗効果〔英文〕
- Peroxidase activities in the floral tissues of Tradescantia clone BNL 4430 treated with maleic hydrazide alone, X rays alone, or in combinations
- Dicentric chromosome bridges in root tips and micronuclei in pollen tetrads induced by X rays and maleic hydrazide in Tradescantia clone BNL 4430
- Mutagenic synergism detected between 1,2-dibromoethane and X rays in the stamen hairs of Tradescantia clone BNL 4430
- 二条オオムギ根端におけるX線誘発染色体異常の消失〔英文〕
- Further yearly analyses of spontaneous pink mutant events in the stamen hairs of Tradescantia clone BNL 4430 cultivated in the NSC growth chamber
- Antagonistic effects of ethyl methanesulfonate and maleic hydrazide in inducing somatic mutations in the stamen hairs of Tradescantia clone BNL 4430
- ムラサキツユクサ温度感受性易変株の雄蘂毛における自然および誘発ピンク色突然変異セクタ-の解析〔英文〕
- ムラサキツユクサ雄蕊毛におけるガンマ線と散乱放射線の遺伝的効果の比較〔英文〕