Presoaking with nitric oxide donor SNP alleviates heat shock damages in mung bean leaf discs
文献类型：期刊论文
| 作者 | Yang, JD; Yun, HY; Zhang, TH; Zhao, HL |
| 刊名 | BOTANICAL STUDIES
 |
| 出版日期 | 2006-04-01 |
| 卷号 | 47期号:2页码:129-136 |
| 关键词 | antioxidant enzyme activity heat shock membrane integrity mung bean (Phaseolus radiatus) nitric oxide photochemical efficiency |
| ISSN号 | 1817-406X |
| 通讯作者 | Yang, JD(yangjiading@yahoo.com) |
| 英文摘要 | The objective of this study was to examine whether exogenously applied nitric oxide (NO) have some protective role on mung bean (Phaseolus radiatus) leaf discs under heat shock. Leaf discs were presoaked in distilled water and sodium nitroprusside (SNP, a NO donor) solution (150 mu M) for 60 min respectively, then submitted to a heat shock at 45 degrees C for 90 min in dark. Control materials were presoaked with distilled water and laid under room temperature (25 degrees C). The chlorophyll a fluorescence parameters, membrane integrity, hydrogen peroxide (H2O2) content and activities of antioxidant enzymes [catalase (CAT), guaiacol peroxidase (POD) and superoxide dismutase (SOD)] were assayed. Compared with heat-shocked leaf discs, the maximal quantum yield of photosystern II (PSII) (measured as F-v root F-m) was significantly increased, electrolyte leakage due to heat shock was reduced by 48%, lipid peroxidation and H2O2 content were kept at control level by SNP presoaking. The suppressed activities of antioxidant enzymes by heat shock were all recuperated by SNP presoaking. On the other hand, these role of SNP presoaking were reversed fully or partially by bovine hemoglobin (a powerful NO scavenger), suggesting that protective effect by SNP is attributable to released NO. In conclusion, it appears that the exogenously applied NO donor SNP can promote higher leaf photochemical activity and cell membrane integrity in mung bean leaf discs under heat shock. This role is putatively due to that the released NO can recuperate suppressed activities of anti-oxidant enzymes, thus eliminating oxidative damage under heat shock stress. |
| 收录类别 | SCI |
| WOS关键词 | RICE LEAVES ; SUPEROXIDE DISMUTASES ; ELECTRON-TRANSPORT ; OXIDATIVE STRESS ; ABSCISIC-ACID ; CHLOROPHYLL FLUORESCENCE ; REVERSIBLE INHIBITION ; HYDROGEN-PEROXIDE ; HIGH-TEMPERATURE ; PLANTS |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000238611000003 |
| 出版者 | ACADEMIA SINICA, INST PLANT & MICROBIAL BIOLOGY & RES CENTER BIODIVERSITY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555753 |
| 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, Dept Ecol & Agr, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, JD,Yun, HY,Zhang, TH,et al. Presoaking with nitric oxide donor SNP alleviates heat shock damages in mung bean leaf discs[J]. BOTANICAL STUDIES,2006,47(2):129-136. |
| APA | Yang, JD,Yun, HY,Zhang, TH,&Zhao, HL.(2006).Presoaking with nitric oxide donor SNP alleviates heat shock damages in mung bean leaf discs.BOTANICAL STUDIES,47(2),129-136. |
| MLA | Yang, JD,et al."Presoaking with nitric oxide donor SNP alleviates heat shock damages in mung bean leaf discs".BOTANICAL STUDIES 47.2(2006):129-136. |
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来源：寒区旱区环境与工程研究所
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