短期UV-B辐射对青藏高原美丽风毛菊PSⅡ光化学效率的影响
Effects of short term enhanced UV-B radiation on the PSⅡ photochemical efficiency of alpine plant Saussurea superba
查看参考文献34篇
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文摘
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通过短期增补UV-B辐射模拟试验,研究了青藏高原典型天气(晴天、多云、阴天)下高山植物美丽风毛菊叶片的叶绿素荧光参数变化.结果表明:随天气由晴变阴,美丽风毛菊叶片暗适应3min的PSⅡ最大光化学量子效率(Fv/Fm)显著升高,实际PSⅡ光化学效率(ΦPSⅡ)和光化学猝灭系数(qP)也升高,而非光化学猝灭系数(NPQ)则降低,可见光辐射(PAR)是影响PSⅡ光能转化效率的主要因素.增补UV-B辐射后,3种典型天气下,美丽风毛菊叶片的Fv/Fm和NPQ略有降低,ΦPSⅡ和qP略微增加,但对光合气体交换过程没有产生负影响.叶片净光合速率Pn和ΦPSⅡ的增高趋势与增补UV-B辐射下相对较多的UV-A成分有关,同时也得益于叶片厚度的增加.UV-B辐射对叶片光合机构具有潜在负影响. |
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其他语种文摘
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A simulation experiment of short term supplementation of UV-B was conducted to study the changes of chlorophyll fluorescence coefficients of alpine plant Saussurea superba under three typical weather conditions(sunny,cloudy,and shady)in Qinghai-Tibet Plateau.When the weather changed from sunny to shady,the maximal quantum efficiency of PS Ⅱ photochemistry(Fv/Fm)after 3 minutes of dark adaptation increased significantly,the actual photochemical efficiency of PSⅡ(ΦPSⅡ)and photochemical quenching(qP)also increased,but the non-photochemical quenching(NPQ)decreased,demonstrating that PAR was the main factor affecting the PSⅡ photochemical efficiency of S.superba.After the short term supplementation of UV-B,the Fv/Fm and NPQ under the three typical weather conditions had a slight decrease but the ΦPSⅡ and qP had a slight increase,while the photosynthetic gas exchange had less change.The increasing trend of net photosynthetic rate Pn and ΦPSⅡ under enhanced UV-B radiation could be related to the existence of more UV-A component,and also,benefited from the increased leaf thickness.UV-B radiation had potential negative effects on leaf photosynthetic components. |
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来源
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应用生态学报
,2011,22(5):1147-1154 【核心库】
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关键词
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美丽风毛菊
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叶绿素荧光
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PSⅡ光化学效率
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青藏高原
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UV-B辐射
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天气
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地址
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1.
中国科学院西北高原生物研究所, 中国科学院高原生物适应与进化重点实验室, 西宁, 810001
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中国科学院西北高原生物研究所, 中国科学院高原生物适应与进化重点实验室, 北京, 100049
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-9332 |
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学科
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林业 |
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基金
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国家自然科学基金项目
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国家科技部国际合作重点项目
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文献收藏号
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CSCD:4207903
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参考文献 共
34
共2页
|
|
1.
van der Leun JC. Environmental effects of ozone depletion:1994 assessment.
Ambio,1995,24:138-142
|
被引
5
次
|
|
|
|
|
2.
Madronich S. Changes in ultraviolet radiation reaching the earth's surface.
Ambio,1995,24:143-152
|
被引
25
次
|
|
|
|
|
3.
Zepp RG. Effects of increased solar ultraviolet radiation on biogeochemical cycles.
Ambio,1995,24:181-187
|
被引
5
次
|
|
|
|
|
4.
Madronich S. Effects of increased solar ultraviolet radiation on tropospheric composition and air quality.
Ambio,1995,24:188-190
|
被引
2
次
|
|
|
|
|
5.
Hader DP. Effects of increased solar ultraviolet radiation on aquatic ecosystems.
Ambio,1995,24:174-179
|
被引
8
次
|
|
|
|
|
6.
Caldwell MM. Effects of increased solar ultraviolet radiation on terrestrial ecosystem.
Journal of Photochemistry and Photobiology B:Biology,1998,46:40-52
|
被引
82
次
|
|
|
|
|
7.
Longstreth JD. Effects of increased solar ultraviolet radiation on human health.
Ambio,1995,24:153-163
|
被引
3
次
|
|
|
|
|
8.
Andrady A. Effects of increased solar ultraviolet radiation on materials.
Ambio,1995,24:191-196
|
被引
1
次
|
|
|
|
|
9.
Larcher W.
Physiological Plant Ecology.2 Ed,1980:5-60
|
被引
1
次
|
|
|
|
|
10.
周秀骥. 中国地区臭氧总量变化与青藏高原低值中心.
科学通报,1995,40(15):1396-1398
|
被引
152
次
|
|
|
|
|
11.
Visser AJ. The combined effects of CO2 concentration and solar UV-B radiation on faba bean grown in open top chambers.
Plant,Cell and Environment,1997,20:189-199
|
被引
1
次
|
|
|
|
|
12.
Ziska LH. Influence of ultraviolet-B(UV-B)radiation on photosynthetic and growth characteristics in field-grown cassava(Manihot esculentum Crantz.).
Plant,Cell and Environment,1993,16:73-79
|
被引
6
次
|
|
|
|
|
13.
Fiscus EL. Is increased UV-B a threat to crop photosynthesis and productivity.
Photosynthesis Research,1995,43:81-92
|
被引
13
次
|
|
|
|
|
14.
Flint SD. Ecosystem UV-B experiments in terrestrial communities:A review of recent findings and methodologies.
Agricultural and Forest Meteorology,2003,120:177-189
|
被引
23
次
|
|
|
|
|
15.
Lau TSL. Ambient levels of UV-B in Hawaii combined with nutrient deficiency decrease photosynthesis in near-isogenic maize lines varying in leaf flavonoids:Flavonoids decrease photoinhibition in plants exposed to UV-B.
Photosynthetica,2006,44:394-403
|
被引
4
次
|
|
|
|
|
16.
师生波. Light sources for ultraviolet research and simulation of solar ultraviolet-B radiation.
生物技术通报,2006(suppl):161-166
|
被引
6
次
|
|
|
|
|
17.
Gartia S. UV-A irradiation guards the photosynthetic apparatus against UV-B damage.
Photosynthetica,2003,41:545-549
|
被引
2
次
|
|
|
|
|
18.
Sicora C. The interaction of visible and UV-B light during photodamage and repair of photosystemⅡ.
Photosynthesis Research,2003,75:127-137
|
被引
6
次
|
|
|
|
|
19.
Sicora C. UV-B and UV-A radiation effects on photosynthesis at the molecular level.
Environmental UV Radiation:Impact on Ecosystems and Human Health and Predictive Model,2006:121-135
|
被引
1
次
|
|
|
|
|
20.
师生波. Effect of enhanced UV-B radiation on photosynthesis and photosynthetic pigments in alpine plants Saussurea superb.
草地学报,2010,18(5):1-8
|
被引
1
次
|
|
|
|
|
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