Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence
To determine the effects of intensive light environment in subalpine region, Western China, on plant physiological traits during leaf senescence in late growth season, the photosynthetic rates, contents of photosynthetic pigments and soluble proteins of bamboo (Fargesia denudata) and poplar (Populus...
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| Format: | Article |
| Language: | English |
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Zhejiang University Press
2008-05-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2008.03.004 |
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| author | QIAO Yun-zhou LIU Meng-yu WANG Kai-yun ZHANG Yuan-bin |
| author_facet | QIAO Yun-zhou LIU Meng-yu WANG Kai-yun ZHANG Yuan-bin |
| author_sort | QIAO Yun-zhou |
| collection | DOAJ |
| description | To determine the effects of intensive light environment in subalpine region, Western China, on plant physiological traits during leaf senescence in late growth season, the photosynthetic rates, contents of photosynthetic pigments and soluble proteins of bamboo (Fargesia denudata) and poplar (Populus cathayana) leaves were investigated with a light shading of (30±2.5)%. Contents of malondialdehyde (MDA), activities of superoxide dismutase (SOD) and catalase (CAT) were also determined. The results show that, leaf photosynthetic rate, contents of soluble protein and photosynthetic pigments increased with the decrease of light intensity. The activities of SOD and CAT increased and the content of MDA decreased. These results suggested that moderate shading is beneficial to delay leaf senescence and to maintain high photosynthetic rate. Additionally, leaf photosynthetic rates, contents of soluble protein and photosynthetic pigments, activities of SOD and CAT of poplar were all higher than that of bamboo. This indicated that physiological indices relevant to leaf senescence are dependant on plant species. Bamboo and poplar are two of the most important species in dark coniferous forest of Western China, therefore, the specific differences in response to light intensities might impose remarkable effect on their ecologic niche and the succession process of forest stand. |
| format | Article |
| id | doaj-art-7f171e0a2dbc40d8b8935e50f2046fcb |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2008-05-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-7f171e0a2dbc40d8b8935e50f2046fcb2025-08-20T03:58:11ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552008-05-013425526010.3785/j.issn.1008-9209.2008.03.00410089209Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescenceQIAO Yun-zhouLIU Meng-yuWANG Kai-yunZHANG Yuan-binTo determine the effects of intensive light environment in subalpine region, Western China, on plant physiological traits during leaf senescence in late growth season, the photosynthetic rates, contents of photosynthetic pigments and soluble proteins of bamboo (Fargesia denudata) and poplar (Populus cathayana) leaves were investigated with a light shading of (30±2.5)%. Contents of malondialdehyde (MDA), activities of superoxide dismutase (SOD) and catalase (CAT) were also determined. The results show that, leaf photosynthetic rate, contents of soluble protein and photosynthetic pigments increased with the decrease of light intensity. The activities of SOD and CAT increased and the content of MDA decreased. These results suggested that moderate shading is beneficial to delay leaf senescence and to maintain high photosynthetic rate. Additionally, leaf photosynthetic rates, contents of soluble protein and photosynthetic pigments, activities of SOD and CAT of poplar were all higher than that of bamboo. This indicated that physiological indices relevant to leaf senescence are dependant on plant species. Bamboo and poplar are two of the most important species in dark coniferous forest of Western China, therefore, the specific differences in response to light intensities might impose remarkable effect on their ecologic niche and the succession process of forest stand.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2008.03.004bamboo (<italic>Fargesia denudata</italic>)poplar (<italic>Populus cathayana</italic>)photosynthetic ratemalondialdehydesuperoxide dismutasecatalase |
| spellingShingle | QIAO Yun-zhou LIU Meng-yu WANG Kai-yun ZHANG Yuan-bin Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence 浙江大学学报. 农业与生命科学版 bamboo (<italic>Fargesia denudata</italic>) poplar (<italic>Populus cathayana</italic>) photosynthetic rate malondialdehyde superoxide dismutase catalase |
| title | Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence |
| title_full | Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence |
| title_fullStr | Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence |
| title_full_unstemmed | Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence |
| title_short | Effects of light intensity on physiological traits of bamboo (Fargesia denudata) and poplar (Populus cathayana) during leaf senescence |
| title_sort | effects of light intensity on physiological traits of bamboo fargesia denudata and poplar populus cathayana during leaf senescence |
| topic | bamboo (<italic>Fargesia denudata</italic>) poplar (<italic>Populus cathayana</italic>) photosynthetic rate malondialdehyde superoxide dismutase catalase |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2008.03.004 |
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