Effects of exogenous nitric oxide on photochemical activity of photosystem II in potato leaf tissue under non-stress condition
文献类型：期刊论文
| 作者 | Yang, JD; Zhao, HL; Zhang, TH; Yun, JF |
| 刊名 | ACTA BOTANICA SINICA
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 46期号:9页码:1009-1014 |
| 关键词 | nitric oxide photosystem II (PS II) quantum efficiency potato leaf tissue non-stress condition |
| ISSN号 | 1672-6650 |
| 通讯作者 | Yang, JD(yangjiading@sina.com) |
| 英文摘要 | Under non-stress condition, effects of exogenous nitric oxide (NO) on chlorophyll fluorescence parameters in detached leaves and leaf discs of potato (Solanum tuberosum U were surveyed. Results showed that the maximal quantum efficiency (F-v/F-m) and the effective quantum efficiency (Phi(PS II)) of photosystem II (PS II) were reduced by exogenous NO under illumination (150 mumol-m(-2)s(-1), 25 V). This influence was related not only to the concentration of sodium nitroprusside (SNP, a NO donor) solution, but also to the active duration of NO on leaf tissue. Results with leaf discs showed that the effects of SNP on (Phi(PS II) could be prevented by bovine hemoglobin (a powerful NO scavenger), while a mixture of NO2- and NO3- (the decomposition product of NO or its donor SNP) had much less influence on Phi(PS II) than SNP, indicating that effects of exogenous SNP on PS II photochemical activity was mainly due to NO generation. Under light (150 mumol-m-(2.)s(-1), 25 degreesC) for 4 h or longer period, the non-photochemical quenching (NPQ) in SNP-soaked leaves was statistically similar to that in H2O-soaked control, but Phi(PS II) and the proportion of open reaction centers (measured as qP) were lower than control, respectively. After 25 min dark-adaptation, the maximal fluorescence (F,) in SNP treatment (8 and 12 h illumination duration) was significantly lower than the control, while the initial fluorescence (F-o) in SNP and H2O-treated leaves had no significant difference. Therefore this indicated that under the present experimental condition, the NO-affected site might not be the PS II reaction centers. On the donor side of PS II, NO putatively influenced the light-harvesting capacity of leaves under light; on the acceptor side, NO-affected sites were some components of electron transport chain after Q(A), i.e. NO enhanced the reductive degree of reaction centers through blocking the electron transport after Q(A), thus reducing the photochemical activity of PS II. |
| 收录类别 | SCI |
| WOS关键词 | REVERSIBLE INHIBITION ; PLANT-TISSUES ; IN-VIVO ; FLUORESCENCE ; PHOTOPROTECTION ; GERMINATION ; SENESCENCE ; RESPONSES |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| WOS类目 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000224034800001 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556984 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yang, JD |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, JD,Zhao, HL,Zhang, TH,et al. Effects of exogenous nitric oxide on photochemical activity of photosystem II in potato leaf tissue under non-stress condition[J]. ACTA BOTANICA SINICA,2004,46(9):1009-1014. |
| APA | Yang, JD,Zhao, HL,Zhang, TH,&Yun, JF.(2004).Effects of exogenous nitric oxide on photochemical activity of photosystem II in potato leaf tissue under non-stress condition.ACTA BOTANICA SINICA,46(9),1009-1014. |
| MLA | Yang, JD,et al."Effects of exogenous nitric oxide on photochemical activity of photosystem II in potato leaf tissue under non-stress condition".ACTA BOTANICA SINICA 46.9(2004):1009-1014. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
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。