Impact of seasonally frozen soil on germinability and antioxidant enzyme activity of picea asperata seeds
文献类型：期刊论文
| 作者 | Qin, Jihong1,2; Liu, Qing1 |
| 刊名 | Canadian journal of forest research-revue canadienne de recherche forestiere
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 39期号:4页码:723-730 |
| ISSN号 | 0045-5067 |
| DOI | 10.1139/x09-001 |
| 通讯作者 | Liu, qing(liuqing@cib.ac.cn) |
| 英文摘要 | In the subalpine zone of the qinghai-tibetan plateau of china, dragon spruce (picea asperata mast.) is commonly used for reforestation. the aim of the present work was to study the effects of seasonally frozen soil on the germination of p. asperata seeds and to investigate whether these effects were associated with resumption of the antioxidant defense system. the nonfrozen treatment resulted in near failure of germination (1%) and was associated with relatively high levels of hydrogen peroxide (h(2)o(2)) and low activities of superoxide dismutase (sod), catalase (cat), and ascorbate peroxide (apx). germination of p. asperata seeds at 10 cm under the seasonally frozen soil was higher than that at 5 cm by 26%; this higher germination rate was associated with the recovery of sod, cat, and apx activities. the levels of malondialdehyde (mda) in seeds from seasonally frozen treatments were higher than those in the nonfrozen treatment, implying greater lipid peroxidation and that frozen seeds might have suffered from oxidative stress. the results indicate that seasonally frozen soil facilitated the germination of p. asperata seeds and that germination was closely related to the resumption of antioxidant enzymes activity. overall, these findings suggest that the disappearance of seasonally frozen ground caused by global warming might result in failure of regeneration of p. asperata. |
| WOS关键词 | INDUCED OXIDATIVE STRESS ; HYDROGEN-PEROXIDE ; SUPEROXIDE-DISMUTASE ; MAIZE SEEDLINGS ; MEDICAGO-SATIVA ; LIQUID-NITROGEN ; SOYBEAN SEEDS ; UV-B ; GERMINATION ; TOLERANCE |
| WOS研究方向 | Forestry |
| WOS类目 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000267810400003 |
| 出版者 | NATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2395225 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Liu, Qing |
| 作者单位 | 1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Jihong,Liu, Qing. Impact of seasonally frozen soil on germinability and antioxidant enzyme activity of picea asperata seeds[J]. Canadian journal of forest research-revue canadienne de recherche forestiere,2009,39(4):723-730. |
| APA | Qin, Jihong,&Liu, Qing.(2009).Impact of seasonally frozen soil on germinability and antioxidant enzyme activity of picea asperata seeds.Canadian journal of forest research-revue canadienne de recherche forestiere,39(4),723-730. |
| MLA | Qin, Jihong,et al."Impact of seasonally frozen soil on germinability and antioxidant enzyme activity of picea asperata seeds".Canadian journal of forest research-revue canadienne de recherche forestiere 39.4(2009):723-730. |
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来源：中国科学院大学
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