Damage to DNA caused by UV-B radiation in the desert cyanobacterium Scytonema javanicum and the effects of exogenous chemicals on the process
文献类型：期刊论文
| 作者 | Wang, Gaohong2; Deng, Songqiang1; Li, Cheng1; Liu, Yongding2; Chen, Lanzhou1,2; Hu, Chaozhen1 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2012-07-01 |
| 卷号 | 88期号:4页码:413-417 |
| 关键词 | Desert soil cyanobacteria UV-B DNA damage ROS Herbicides Exogenous chemicals |
| ISSN号 | 0045-6535 |
| 通讯作者 | Chen, LZ (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan 430079, Peoples R China. |
| 中文摘要 | Radiation with UV-B increased the damage to DNA in Scytonema javanicum, a desert-dwelling soil microorganism, and the level of damage varied with the intensity of UV-B radiation and duration of exposure. Production of reactive oxygen species (ROS) also increased because of the radiation. Different exogenous chemicals (ascorbate acid, ASC; N-acetylcysteine, NAC; glyphosate, GPS; and 2-methyl-4-chlorophenoxy-acetic acid, MCPA-Na) differed in their effect on the extent of DNA damage and ROS production: whereas NAC and ASC protected the DNA from damage and resulted in reduced ROS production, the herbicides (GPS and MCPA-Na) increased the extent of damage, lowered the rate of photosynthesis, and differed in their effect on ROS production. The chemicals probably have different mechanisms to exercise their effects: NAC and ASC probably function as antioxidant agents or as precursors of other antioxidant molecules that protect the DNA and photosynthetic apparatus directly from the ROS produced as a result of UV-B radiation, and GPS and MCPA-Na probably disrupt the normal metabolism in S. javanicum to induce the leaking of ROS into the photosynthetic electron transfer pathway following UV-B radiation, and thereby damage the DNA. Such mechanisms have serious implications for the use of environment-friendly herbicides, which, because they can destroy DNA, may prove harmful to soil microorganisms. (C) 2012 Elsevier Ltd. All rights reserved. |
| 英文摘要 | Radiation with UV-B increased the damage to DNA in Scytonema javanicum, a desert-dwelling soil microorganism, and the level of damage varied with the intensity of UV-B radiation and duration of exposure. Production of reactive oxygen species (ROS) also increased because of the radiation. Different exogenous chemicals (ascorbate acid, ASC; N-acetylcysteine, NAC; glyphosate, GPS; and 2-methyl-4-chlorophenoxy-acetic acid, MCPA-Na) differed in their effect on the extent of DNA damage and ROS production: whereas NAC and ASC protected the DNA from damage and resulted in reduced ROS production, the herbicides (GPS and MCPA-Na) increased the extent of damage, lowered the rate of photosynthesis, and differed in their effect on ROS production. The chemicals probably have different mechanisms to exercise their effects: NAC and ASC probably function as antioxidant agents or as precursors of other antioxidant molecules that protect the DNA and photosynthetic apparatus directly from the ROS produced as a result of UV-B radiation, and GPS and MCPA-Na probably disrupt the normal metabolism in S. javanicum to induce the leaking of ROS into the photosynthetic electron transfer pathway following UV-B radiation, and thereby damage the DNA. Such mechanisms have serious implications for the use of environment-friendly herbicides, which, because they can destroy DNA, may prove harmful to soil microorganisms. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | ALLEVIATES OXIDATIVE DAMAGE ; ACETYL-L-CYSTEINE ; NITRIC-OXIDE ; ANTIOXIDANT ENZYMES ; GREEN-ALGAE ; NOSTOC SP ; STRESS ; CHLORELLA ; TOXICITY ; SYSTEM |
| 收录类别 | SCI |
| 资助信息 | National Major Programs of Water Body Pollution Control and Remediation[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446, 30500068, 30970688]; Chinese Manned Spaceflight Project |
| 语种 | 英语 |
| WOS记录号 | WOS:000305266300007 |
| 公开日期 | 2012-09-25 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/17007]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Gaohong,Deng, Songqiang,Li, Cheng,et al. Damage to DNA caused by UV-B radiation in the desert cyanobacterium Scytonema javanicum and the effects of exogenous chemicals on the process[J]. CHEMOSPHERE,2012,88(4):413-417. |
| APA | Wang, Gaohong,Deng, Songqiang,Li, Cheng,Liu, Yongding,Chen, Lanzhou,&Hu, Chaozhen.(2012).Damage to DNA caused by UV-B radiation in the desert cyanobacterium Scytonema javanicum and the effects of exogenous chemicals on the process.CHEMOSPHERE,88(4),413-417. |
| MLA | Wang, Gaohong,et al."Damage to DNA caused by UV-B radiation in the desert cyanobacterium Scytonema javanicum and the effects of exogenous chemicals on the process".CHEMOSPHERE 88.4(2012):413-417. |
入库方式： OAI收割
来源：水生生物研究所
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