DIFFERENTIAL RESPONSES OF ANABAENA SP PCC 7120 (CYANOPHYCEAE) CULTURED IN NITROGEN-DEFICIENT AND NITROGEN-ENRICHED MEDIA TO ULTRAVIOLET-B RADIATION
文献类型：期刊论文
| 作者 | Qin, Hongjie1,2; Peng, Chengrong1,2; Liu, Yongding1; Li, Dunhai1 |
| 刊名 | JOURNAL OF PHYCOLOGY
 |
| 出版日期 | 2012-06-01 |
| 卷号 | 48期号:3页码:615-625 |
| 关键词 | Anabaena sp PCC 7120 ATPase activity compensatory growth complementary chromatic acclimation morphology photosynthesis ultraviolet B |
| ISSN号 | 0022-3646 |
| 通讯作者 | Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China. |
| 中文摘要 | Stratospheric ozone depletion increases the amount of ultraviolet-B radiation (UVBR) (280320 nm) reaching the surface of the earth, potentially affecting phytoplankton. In this work, Anabaena sp. PCC 7120, a typically nitrogen (N)-fixing filamentous bloom-forming cyanobacterium in freshwater, was individually cultured in N-deficient and N-enriched media for long-term acclimation before being subjected to ultraviolet-B (UVB) exposure experiments. Results suggested that the extent of breakage in the filaments induced by UVBR increases with increasing intensity of UVB stress. In general, except for the 0.1 W . m-2 treatment, which showed a mild increase, UVB exposure inhibits photosynthesis as evidenced by the decrease in the chl fluorescence parameters maximum photochemical efficiency of PSII (Fv/Fm) and maximum relative electron transport rate. Complementary chromatic acclimation was also observed in Anabaena under different intensities of UVB stress. Increased total carbohydrate and soluble protein may provide some protection for the culture against damaging UVB exposure. In addition, N-deficient cultures with higher recovery capacity showed overcompensatory growth under low UVB (0.1 W . m-2) exposure during the recovery period. Significantly increased (similar to 830%) ATPase activity may provide enough energy to repair the damage caused by exposure to UVB. |
| 英文摘要 | Stratospheric ozone depletion increases the amount of ultraviolet-B radiation (UVBR) (280320 nm) reaching the surface of the earth, potentially affecting phytoplankton. In this work, Anabaena sp. PCC 7120, a typically nitrogen (N)-fixing filamentous bloom-forming cyanobacterium in freshwater, was individually cultured in N-deficient and N-enriched media for long-term acclimation before being subjected to ultraviolet-B (UVB) exposure experiments. Results suggested that the extent of breakage in the filaments induced by UVBR increases with increasing intensity of UVB stress. In general, except for the 0.1 W . m-2 treatment, which showed a mild increase, UVB exposure inhibits photosynthesis as evidenced by the decrease in the chl fluorescence parameters maximum photochemical efficiency of PSII (Fv/Fm) and maximum relative electron transport rate. Complementary chromatic acclimation was also observed in Anabaena under different intensities of UVB stress. Increased total carbohydrate and soluble protein may provide some protection for the culture against damaging UVB exposure. In addition, N-deficient cultures with higher recovery capacity showed overcompensatory growth under low UVB (0.1 W . m-2) exposure during the recovery period. Significantly increased (similar to 830%) ATPase activity may provide enough energy to repair the damage caused by exposure to UVB. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 研究领域[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 关键词[WOS] | RESOLVED ENERGY-TRANSFER ; UV-B ; GREEN-ALGA ; CYANOBACTERIUM ARTHROSPIRA ; PORPHYRIDIUM-CRUENTUM ; COMPENSATORY GROWTH ; PHOTOSYSTEM-II ; DNA-DAMAGE ; AMINO-ACID ; PHOTOSYNTHESIS |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China[40971249]; National Major Programs of Water Body Pollution Control and Remediation[2009ZX07106-001-003, 2009ZX07104-005] |
| 语种 | 英语 |
| WOS记录号 | WOS:000304810200013 |
| 公开日期 | 2012-09-25 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/16977]  |
| 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.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Hongjie,Peng, Chengrong,Liu, Yongding,et al. DIFFERENTIAL RESPONSES OF ANABAENA SP PCC 7120 (CYANOPHYCEAE) CULTURED IN NITROGEN-DEFICIENT AND NITROGEN-ENRICHED MEDIA TO ULTRAVIOLET-B RADIATION[J]. JOURNAL OF PHYCOLOGY,2012,48(3):615-625. |
| APA | Qin, Hongjie,Peng, Chengrong,Liu, Yongding,&Li, Dunhai.(2012).DIFFERENTIAL RESPONSES OF ANABAENA SP PCC 7120 (CYANOPHYCEAE) CULTURED IN NITROGEN-DEFICIENT AND NITROGEN-ENRICHED MEDIA TO ULTRAVIOLET-B RADIATION.JOURNAL OF PHYCOLOGY,48(3),615-625. |
| MLA | Qin, Hongjie,et al."DIFFERENTIAL RESPONSES OF ANABAENA SP PCC 7120 (CYANOPHYCEAE) CULTURED IN NITROGEN-DEFICIENT AND NITROGEN-ENRICHED MEDIA TO ULTRAVIOLET-B RADIATION".JOURNAL OF PHYCOLOGY 48.3(2012):615-625. |
入库方式： OAI收割
来源：水生生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。