Responses in growth, physiology and nitrogen nutrition of dragon spruce (picea asperata) seedlings of different ages to enhanced ultraviolet-b
文献类型：期刊论文
| 作者 | Yao, Xiaoqin; Liu, Qing |
| 刊名 | Acta physiologiae plantarum
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 29期号:3页码:217-224 |
| 关键词 | Dragon spruce Glutamine synthetase Nitrate reductase Nitrogen Picea asperata Pigment Proline Soluble protein Uv-b absorbing compounds Uv-b |
| ISSN号 | 0137-5881 |
| DOI | 10.1007/s11738-007-0027-4 |
| 通讯作者 | Liu, qing(liuqing@cib.ac.cn) |
| 英文摘要 | In the southeast of the qinghai-tibetan plateau of china, dragon spruce ( picea asperata) is a key species and widely used in reforestation processes in the area. the paper mainly studied the effects of ultraviolet-b ( uv-b) on growth, physiology and nitrogen nutrition of 3- and 6-year-old dragon spruce seedlings. the experimental design included ambient uv-b ( control) and enhanced uv-b (+uv-b, a 30% increase). enhanced uv-b significantly decreased growth, needle and root nitrogen concentration, needle nitrate reductase activity and increased uv-b absorbing compounds and malondialdehyde ( mda) content of two old dragon spruce seedlings. glutamine synthetase activity was not affected by enhanced uv-b in two old dragon spruce seedlings. on the other hand, different old seedlings also exhibited different physiological responses to enhanced uv-b radiation. chlorophyll content, carotenoids content and soluble protein content in 3-year-old seedlings significantly reduced by enhanced uv-b, but those in 6-year-old seedlings were not affected by enhanced uv-b. proline content of 6-year-old seedlings were increased by enhanced uv-b. compared with the 3-year-old seedlings, the 6-year-old seedlings showed lower reduction of growth and mda content, and accumulated more proline and uv-b absorbing compounds for protecting seedlings under enhanced uv-b. the results implicated that 3-year-old seedlings were more sensitivity to enhanced uv-b than 6-year-old seedlings. |
| WOS关键词 | UV-B ; ABSORBING COMPOUNDS ; RADIATION ; PHOTOSYNTHESIS ; PROLINE ; STRESS ; PLANTS ; PEROXIDATION ; CAROTENOIDS ; METABOLISM |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000249586400006 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2381242 |
| 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 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Xiaoqin,Liu, Qing. Responses in growth, physiology and nitrogen nutrition of dragon spruce (picea asperata) seedlings of different ages to enhanced ultraviolet-b[J]. Acta physiologiae plantarum,2007,29(3):217-224. |
| APA | Yao, Xiaoqin,&Liu, Qing.(2007).Responses in growth, physiology and nitrogen nutrition of dragon spruce (picea asperata) seedlings of different ages to enhanced ultraviolet-b.Acta physiologiae plantarum,29(3),217-224. |
| MLA | Yao, Xiaoqin,et al."Responses in growth, physiology and nitrogen nutrition of dragon spruce (picea asperata) seedlings of different ages to enhanced ultraviolet-b".Acta physiologiae plantarum 29.3(2007):217-224. |
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来源：中国科学院大学
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