Long-living lotus: Germination and soil gamma-irradiation of centuries-old fruits, and cultivation, growth, and phenotypic abnormalities of offspring
文献类型：期刊论文
| 作者 | Shen-Miller, J; Schopf, JW; Harbottle, G; Cao, RJ; Ouyang, S; Zhou, KS; Southon, JR; Liu, GH |
| 刊名 | AMERICAN JOURNAL OF BOTANY
 |
| 出版日期 | 2002-02-01 |
| 卷号 | 89期号:2页码:236-247 |
| ISSN号 | 0002-9122 |
| 关键词 | abnormalities dormancy gamma radiation growth imbibition lotus seed longevity |
| 文献子类 | Article |
| 英文摘要 | Sacred lotus (Nelumbo nucifera) has been cultivated as a crop in Asia for thousands of years An similar to1300-yr-old lotus fruit. recovered from an originally cultivated but now dry lakebed in northeastern China, is the oldest germinated and directly C-14-dated fruit known In 1996, we travelled to the dry lake at Xipaozi Village, China. the source of the old viable fruits. We identified all of the landmarks recorded by botanist Ichiro Ohga some 80 yr ago when he first studied the deposit, but found that the fruits are now rare. We (1) cataloged a total of 60 lotus fruits. (2) germinated four fruits having physical ages of 200-500 yr by C-14 dating: (3) measured the rapid germination of the old fruits and the initially fast growth and short dormancy of their seedlings: (4) recorded abnormal phenotypes in their leaves, stalks, roots. and rhizomes; (5) determined gamma-radiation of similar to2.0 mGy/yr in the lotus-bearing beds: and (6) measured stratigraphic sequences of the lakebed strata. The total gamma-irradiation of the old fruits of 0 1-3 Gy (gray. the unit of absorbed dosage defined as 1 joule/kg, 1 Gy = 100 rad). evidently resulting in certain of the abnormal phenotypes noted in their seedlings, represents the longest natural radiobiology experiment yet recorded Most of the lotus abnormalities resemble those of chronically irradiated plants exposed to much higher irradiances. Though the chronic exposure of the old fruits to low-dose gamma-radiation may be responsible in part for the notably weak growth and mutant phenotypes of the seedlings it has not affected seed viability. All seeds presumably repair cellular damage before germination. Understanding of repair mechanisms in the old lotus seeds may provide insight to the aging process applicable also to other organisms. |
| WOS关键词 | DRY SEEDS ; RADIATION ; LONGEVITY ; STORAGE ; CHINA |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | BOTANICAL SOC AMER INC |
| WOS记录号 | WOS:000178098100007 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/77761]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Shen-Miller, J |
| 作者单位 | 1.Univ Calif Los Angeles, Dept Ecol Evolut & Organismal Biol, Los Angeles, CA 90095 USA 2.Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA 3.Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA 4.Nanjing Inst Geol & Palaeontol, Nanjing, Jiansu, Peoples R China 5.Beijing Inst Geol, Beijing, Peoples R China 6.Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA 7.Liaoning Normal Univ, Dept Geol, Daltan, Liaoming, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen-Miller, J,Schopf, JW,Harbottle, G,et al. Long-living lotus: Germination and soil gamma-irradiation of centuries-old fruits, and cultivation, growth, and phenotypic abnormalities of offspring[J]. AMERICAN JOURNAL OF BOTANY,2002,89(2):236-247. |
| APA | Shen-Miller, J.,Schopf, JW.,Harbottle, G.,Cao, RJ.,Ouyang, S.,...&Liu, GH.(2002).Long-living lotus: Germination and soil gamma-irradiation of centuries-old fruits, and cultivation, growth, and phenotypic abnormalities of offspring.AMERICAN JOURNAL OF BOTANY,89(2),236-247. |
| MLA | Shen-Miller, J,et al."Long-living lotus: Germination and soil gamma-irradiation of centuries-old fruits, and cultivation, growth, and phenotypic abnormalities of offspring".AMERICAN JOURNAL OF BOTANY 89.2(2002):236-247. |
入库方式： OAI收割
来源：地质与地球物理研究所
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