激光与光电子学进展, 2016, 53 (11): 111701, 网络出版: 2016-11-14  

He-Ne激光对增强UV-B辐射后小麦“翘根”的影响 下载: 567次

Influence of He-Ne Laser on "Root-Bending" in Wheat Induced by Enhanced UV-B irradiation
作者单位
1 山西师范大学生命科学学院, 山西 临汾 041004
2 山东农业大学作物生物学国家重点实验室, 山东 泰安 271020
摘要
为探讨He-Ne激光对增强UV-B辐射造成的小麦“翘根”的影响,采用He-Ne激光(辐照剂量为5 mW·mm-2)辐照,对增强UV-B辐射(辐射剂量为10.08 kJ·m-2·d-1)条件下小麦根部肌动蛋白含量、黄酮类化合物含量及种类变化进行研究。结果表明,增强UV-B辐射后小麦主胚根长变短,肌动蛋白及黄酮类化合物含量降低,而He-Ne激光组差异不明显;两种辐射的复合处理组结果低于CK组、高于UV-B处理组,“翘根”现象得到缓解;不同处理组的黄酮类化合物扩散速度不同,UV-B组黄酮类化合物种类发生变化。肌动蛋白及黄酮类含量变化是增强UV-B辐射后小麦“翘根”现象产生的原因之一,He-Ne激光对UV-B辐射造成的小麦“翘根”损伤具有一定的修复作用。
Abstract
In order to study the influence of He-Ne laser on "root-bending" in wheat caused by enhanced UV-B irradiation, the wheat seedlings were exposed to He-Ne laser with 5 mW·mm-2 power density after enhanced UV-B irradiation (10.08 kJ·m-2·d-1). The content of actin, the content and type variety of flavonoids in wheat roots were studied. The results show that compared with those of the contrast group, the main radical length becomes shorter, the content of actin and flavonoids in the UV-B irradiation enhanced group is reduced, while the He-Ne laser treated group has no notable difference. The results of the group under simultaneous irradiation of UV-B and He-Ne laser are lower than those of the contrast group but higher than those of the UV-B irradiated group, and the "root bending" phenomenon is weakened. The migration rates of flavonoids are different in diverse groups. There appear various flavonoids varieties under UV-B irradiation. The variation in content of actin and flavonoids is one of the reason for "root bending". The damage on wheat seedlings induced by UV-B irradiation can be partially repaired by He-Ne laser irradiation.

王燕, 董倩楠, 孟菁, 张美萍. He-Ne激光对增强UV-B辐射后小麦“翘根”的影响[J]. 激光与光电子学进展, 2016, 53(11): 111701. Wang Yan, Dong Qiannan, Meng Jing, Zhang Meiping. Influence of He-Ne Laser on "Root-Bending" in Wheat Induced by Enhanced UV-B irradiation[J]. Laser & Optoelectronics Progress, 2016, 53(11): 111701.

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