UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N<sup>+</sup> HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM

Wang Chongying; Wang Rujuan; Yang Hanmin

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UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N⁺ HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM

更新时间：2023-04-23

- UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N⁺ HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM
- Journal of Radiation Research and Radiation Processing Vol. 12, Issue 2, Pages: 105-108(1994)
- 作者机构：
  
  1.兰州大学生物系，兰州　730000
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Wang Chongying, Wang Rujuan, Yang Hanmin. UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N⁺ HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM. [J]. Journal of Radiation Research and Radiation Processing 12(2):105-108(1994)
DOI：

Wang Chongying, Wang Rujuan, Yang Hanmin. UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N⁺ HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM. [J]. Journal of Radiation Research and Radiation Processing 12(2):105-108(1994) DOI：

摘要

用,3,H-TdR（氚标记胸腺嘧啶脱氧核苷）掺入法研究了受低能N,+,重离子处理的小麦种胚萌发早期DNA的合成动态。结果表明：1）低能N,+,重离子处理能够引起小麦种胚DNA期外合成，即DNA损伤的修复合成，其修复合成的高峰期在种胚吸水后第一个正常的DNA复制高峰到来之前4 h；2) DNA期外合成效应与N,+,重离子处理剂量呈一定的正相关。较高剂量的N,+,重离子处理不仅引起了较高水平的DNA期外合成，而且使正常的DNA复制高峰延迟到来。

Abstract

Using the method of ,3,H-TdR incorporation, this paper studied the change of DNA synthesis during the early period of germination of wheat seeds irradiated by low energy N,+, heavy ion. The results showed: 1) the low energy N,+, heavy ion was also able to induced a unscheduled DNA synthesis (UDS) in seed embryos of wheat: 2) the peak of the UDS occurred at the 6 h after seeds soaking, being 4h earlier than the peak of the normal DNA synthesis of seed embryos: 3) the rate of UDS was roughly in positive proporation to irradiation doses: 4) the level of the normal DNA synthesis decreased with the increase of the UDS in the wheat seed embryos irradiated.

关键词

氮离子N+重离子3H-TdRDNA合成小麦

Keywords

Nitrogen ionHeavy ion3H-TdRDNA synthesisTriticum

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School of Radiation Medicine and Public Health of Soochow University

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UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N+ HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM

DOI：

摘要

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关键词

Keywords

references

UNSCHEDULED DNA SYNTHESIS INDUCED BY LOW ENERGY N⁺ HEAVY ION OF SEED EMBRYOS IN TRITICUM AESTIVUM