Nitric oxide alleviates toxicity of hexavalent chromium on tall fescue and improves performance of photosystem II
文献类型：期刊论文
| 作者 | Chen, Liang1; Du, Dongyun4; Sun, Jie4; Zhu, Huihui4; Niu, Hong4; Chen, Ke4; Xu, Xiaoxiang2; Ai, Honglian3; Huang, Meiyu4 |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2018-11-30 |
| 卷号 | 164页码:32-40 |
| ISSN号 | 0147-6513 |
| 关键词 | Tall fescue Chromium Nitric oxide Reactive oxygen species Photosystem II |
| DOI | 10.1016/j.ecoenv.2018.07.118 |
| 英文摘要 | Tall fescue (Festuca arundinacea Schreb) was widely studied for phytoremediation of organic or heavy metal contaminated soils. However, there is still little information concerning toxicity of chromium (Cr) to tall fescue and roles of nitric oxide (NO) in plants against Cr(VI) stress. In this study, different Cr(VI) treatments (0, 1, 5 and 10 mg/L Cr(VI)) and NO treatments were applied with different combinations in hydroponics culture and their interactions to tall fescue were studied. Specifically, 100 M sodium nitroprusside (SNP) and 100 p.M NG-nitro-I.arginine-methyl ester (L-NAME) treatments were used to apply exogenous NO or inhibit synthesis of NO respectively. Our results showed that tall fescue exhibits comparable Cr(VI) tolerance as wheat (Triticum aestivum L.). Additionally, Cr(VI) accumulation in tall fescue leaves were carefully studied and discussed. Moreover, we observed the significantly increased reactive oxygen species (ROS) contents of tall fescue when subjected to Cr (VI) stress, as well as decreased photosynthetic activities induced by Cr(VI) stress by methods of chlorophyll a fluorescence transient, slow chlorophyll fluorescence kinetics and rapid light response curves. Decreased behaviors of photosynthetic activities may due to destruction of antennae pigments by Cr(VI), ROS burst induced by Cr(VI), and down regulation of photosystem II (PSII) by non-photochemical quenching to avoid over reduction of quinone A, which could be considered as an important strategy to cope with Cr(VI) stress. Meanwhile, exogenous NO treatment improves overall physiological and photosynthetic behaviors of tall fescue against Cr (VI) stress. Moreover, increased translocation factors and improved Cr(VI) tolerance of plants under exogenous NO treatment suggest that SNP treatment could be a useful application for Cr phytoremediation. |
| 资助项目 | National Natural Science Foundation of China[41503067] ; National Natural Science Foundation of China[21477165] ; National Natural Science Foundation of China[31560010] ; Fundamental Research Funds for the Central Universities[CZY18041] ; Fundamental Research Funds for the Central Universities[CZQ17012] |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| 语种 | 英语 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| WOS记录号 | WOS:000449247600004 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/6124]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Chen, Ke |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan, Hubei, Peoples R China 2.Wuhan Univ, Zhongnan Hosp, Otorhinolaryngol Head & Neck Surg, Wuhan, Hubei, Peoples R China 3.South Cent Univ Nationalities, Coll Pharm, Wuhan, Hubei, Peoples R China 4.South Cent Univ Nationalities, Coll Resources & Environm Sci, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Liang,Du, Dongyun,Sun, Jie,et al. Nitric oxide alleviates toxicity of hexavalent chromium on tall fescue and improves performance of photosystem II[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,164:32-40. |
| APA | Chen, Liang.,Du, Dongyun.,Sun, Jie.,Zhu, Huihui.,Niu, Hong.,...&Huang, Meiyu.(2018).Nitric oxide alleviates toxicity of hexavalent chromium on tall fescue and improves performance of photosystem II.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,164,32-40. |
| MLA | Chen, Liang,et al."Nitric oxide alleviates toxicity of hexavalent chromium on tall fescue and improves performance of photosystem II".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 164(2018):32-40. |
入库方式： OAI收割
来源：武汉植物园
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