Growth and physiological responses to supplemental uv-b radiation of two contrasting poplar species
文献类型：期刊论文
| 作者 | Ren, J; Yao, YN; Yang, YQ; Korpelainen, H; Junttila, O; Li, CY |
| 刊名 | Tree physiology
 |
| 出版日期 | 2006-05-01 |
| 卷号 | 26期号:5页码:665-672 |
| 关键词 | Antioxidant enzymes Electrolyte leakage Free proline Uv-b absorbing compounds |
| ISSN号 | 0829-318X |
| 通讯作者 | Li, cy(licy@cib.ac.cn) |
| 英文摘要 | We compared the growth and physiological responses of cuttings of populus kangdingensis c. wang et tung and p. cathayana rehder originating from altitudes of 3500 m and 1500 m, respectively, when exposed to three ultraviolet-b (uv-b) radiation regimes: zero uv-b, ambient (4.5 kj m(-2) day(-1)) and twice-ambient (9 kj m(-2) day(-1)) biologically effective uv-b radiation for one growing season, to determine if populus trees that are adapted to contrasting uv-b habitats exhibit different tolerances to enhanced uv-b radiation. compared with cuttings grown without uv-b radiation, twice-ambient uv-b radiation significantly decreased total biomass, total leaf area and internode length in both species, whereas root/shoot ratio, leaf number, amount of photosynthetic pigments and ascorbate peroxidase activity were unaffected. differences in responses were also observed between the study species. cutting height increment, total biomass, total leaf area, free proline concentration and membrane damage assessed by electrolyte leakage were significantly more affected by the twice-ambient uv-b radiation in p. cathayana than in p. kangdingensis. however, specific leaf mass, amount of uv-b absorbing compounds and superoxide dismutase and guaiacol peroxidase activities increased more with increasing uv-b radiation in p. kangdingensis than in p. cathayana, perhaps reflecting important characteristics of species with low to moderate tolerance to uv-b radiation. overall, the results indicated that p. kangdingensis, which originates from altitudes of 3500 m, has greater tolerance to enhanced uv-b radiation than p. cathayana originating from altitudes of 1500 m. |
| WOS关键词 | ULTRAVIOLET-B ; POPULUS-TRICHOCARPA ; LEAF EXPANSION ; WATER-STRESS ; FIELD ; SEEDLINGS ; PHOTOSYNTHESIS ; PROLINE ; SENSITIVITY ; PHENOLICS |
| WOS研究方向 | Forestry |
| WOS类目 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000237369400013 |
| 出版者 | HERON PUBLISHING |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378981 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, CY |
| 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 3.Yunnan Agr Univ, Dept Grassland Sci, Kunming 650201, Peoples R China 4.Univ Helsinki, Dept Appl Biol, FI-00014 Helsinki, Finland 5.Univ Tromso, Dept Biol, N-9037 Tromso, Norway |
| 推荐引用方式 GB/T 7714 | Ren, J,Yao, YN,Yang, YQ,et al. Growth and physiological responses to supplemental uv-b radiation of two contrasting poplar species[J]. Tree physiology,2006,26(5):665-672. |
| APA | Ren, J,Yao, YN,Yang, YQ,Korpelainen, H,Junttila, O,&Li, CY.(2006).Growth and physiological responses to supplemental uv-b radiation of two contrasting poplar species.Tree physiology,26(5),665-672. |
| MLA | Ren, J,et al."Growth and physiological responses to supplemental uv-b radiation of two contrasting poplar species".Tree physiology 26.5(2006):665-672. |
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来源：中国科学院大学
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