| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-08-07 |
| タイトル |
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タイトル |
Mutational effects of chronic gamma radiation throughout the life cycle of Arabidopsis thaliana: Insight into radiosensitivity in the reproductive stage |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Akira Hirao
Watanabe Yoshito
Yoichi Hasegawa
Toshihito Takagi
Saneyoshi Ueno
Shingo Kaneko
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Organisms living on Earth have always been exposed to natural sources of ionizing radiation, but following recent nuclear disasters, these background levels have often increased regionally due to the addition of man-made sources of radiation. To assess the mutational effects of ubiquitously present radiation on plants, we performed a whole-genome resequencing analysis of mutations induced by chronic irradiation throughout the life cycle of Arabidopsis thaliana grown under controlled conditions. We obtained resequencing data from 36 second generation post-mutagenesis (M2) progeny derived from 12 first generation (M1) lines grown under gamma-irradiation conditions, ranging from 0.0 to 2.0 Gray per day (Gy/day), to identify de novo mutations, including single base substitutions (SBSs) and small insertions/deletions (INDELs). The relationship between de novo mutation frequency and radiation dose rate from 0.0 to 2.0 Gy/day was assessed by statistical modeling. The increase in de novo mutations in response to irradiation dose fit the negative binomial model, which accounted for the high variability of mutation frequency observed. Among the different types of mutations, SBSs were more prevalent than INDELs, and deletions were more frequent than insertions. Furthermore, we observed that the mutational effects of chronic radiation were greater during the reproductive stage. These results will provide valuable insights into practical strategies for analyzing mutational effects in wild plants growing in environments with various mutagens. |
| 書誌情報 |
Science of the Total Environment
巻 838,
号 3,
p. 156224,
発行日 2022-05
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| 出版者 |
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出版者 |
Elsevier |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0048-9697 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.scitotenv.2022.156224. |
