Effects of the solar ultraviolet radiation on the photosynthesis and survival of freshwater algae

太阳紫外线辐射对淡水藻类光合作用和生存的影响

基本信息

  • 批准号:
    13640633
  • 负责人:
  • 金额:
    $ 2.18万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2001
  • 资助国家:
    日本
  • 起止时间:
    2001 至 2002
  • 项目状态:
    已结题

项目摘要

Solar ultraviolet radiation on the earth surface has been increasing recently. This radiation, similar to the visible light, penetrates into water and gives detrimental effects on various aquatic organisms. The present study aims to elucidate the effect of solar radiation on freshwater algae, including phytoplankton and sessile algae distributed in aquatic environments such as lakes and rivers. I obtained the following results using cultured green alga, Chlorella ellipsoidea, and planktonic algae from natural lakes. Photosynthetic rate and cellular growth rate of the Chlorella decreased under the solar ultraviolet conditions; strong inhibition was brought about by solar ultraviolet A (wave length 320-400nm), whereas for the cellular growth was inhibited by ultraviolet B (280-320nm) most strongly and ultraviolet A moderately. Only ultraviolet B was responsible to the damage of DNA, which was determined by production of thymin-dimmers in the algal cells. Survivability of green algae isolated from shallow lake was assessed by the plate colony method. Almost 100% death of algal population was exhibited by the exposure of strong solar radiation, i.e. sunny conditions for 4 h. Photosynthetic rate of phytoplankton populations in situ was measured with 13C method and the oxygen method. Decrease of the rate by ultraviolet A was observed on sunny days at the shallow depths in the lake. The present study revealed that solar ultraviolet radiation also responsible for the vertical migration of zooplankton.
近年来,地球表面的太阳紫外线辐射不断增加。这种辐射与可见光类似,会渗透到水中并对各种水生生物产生有害影响。本研究旨在阐明太阳辐射对淡水藻类的影响,包括分布在湖泊和河流等水生环境中的浮游植物和固着藻类。我使用培养的绿藻、椭圆小球藻和天然湖泊的浮游藻类获得了以下结果。太阳紫外线条件下小球藻的光合速率和细胞生长速率降低;太阳紫外线A(波长320-400nm)对细胞生长有强烈的抑制作用,而紫外线B(280-320nm)对细胞生长的抑制作用最强,紫外线A的抑制作用中等。只有紫外线 B 会造成 DNA 损伤,这是由藻类细胞中胸腺嘧啶二聚体的产生决定的。采用平板菌落法评估浅湖绿藻的生存能力。暴露在强烈的太阳辐射下,即阳光充足的条件下持续 4 小时,藻类种群几乎 100% 死亡。采用~(13)C法和氧气法测定原位浮游植物种群的光合速率。在阳光明媚的日子里,在湖的浅水深处观察到紫外线A的速率下降。目前的研究表明,太阳紫外线辐射也是浮游动物垂直迁移的原因。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Katano, T., Fuki, M., WATANABE, Y.: "Identification of cultured and uncultured picocyanobacteria from a mesotrophic freshwater lake based on the partial sequences of 16S rDNA"Limnology. 2. 213-218 (2001)
Katano, T.、Fuki, M.、WATANABE, Y.:“根据 16S rDNA 的部分序列识别中营养淡水湖中培养和未培养的微微蓝细菌”Limnology。
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    0
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WATANABE Yasunori其他文献

EFFICIENT ESTIMATION METHOD FOR FUTURE CHANGES IN DESIGN WAVE HEIGHT USING d4PDF
使用 d4PDF 设计波高未来变化的有效估计方法
SIMPLIFIED ESTIMATION METHOD FOR WATER DEPTH CHANGES AND TSUNAMI LOAD ON STRUCTURES DUE TO TSUNAMI INUNDATION FLOW WITH SEA ICE FLOES
海冰浮冰引起的海啸淹没流引起的水深变化和海啸结构荷载的简化估算方法
集団飛行時のエコーロケーション音声混信に対するコウモリのエコー抽出戦略 -ワイヤレスマイクロホンを用いた各コウモリのパルス・エコー音響分析-
群体飞行期间蝙蝠对抗回声定位音频干扰的回声提取策略 - 使用无线麦克风对每只蝙蝠进行脉冲回声声学分析 -
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    WATANABE Yasunori;KOJIMA Ryota;竹内由紀,角屋志美,長谷一磨,小林耕太,飛龍志津子
  • 通讯作者:
    竹内由紀,角屋志美,長谷一磨,小林耕太,飛龍志津子
DEVELOPMENT OF INTERNAL WAVES NEAR THE TSUGARU STRAIT ASSOCIATED WITH A STORM EVENT
与风暴事件相关的津轻海峡附近内波的发展
HEAT TRANSFER INTO OCEAN WATER DURING GROWTH OF WIND WAVES
风波增长期间热量传递到海水中

WATANABE Yasunori的其他文献

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{{ truncateString('WATANABE Yasunori', 18)}}的其他基金

Recommendations for providing systematic instruction while floating with clothing to prevent water accidents and its verification
着衣漂浮系统指导预防水上事故的建议及其验证
  • 批准号:
    18K17796
  • 财政年份:
    2018
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Development of a dynamic surface shape measurement system for liquid, solid and geographic surfaces
开发液体、固体和地理表​​面的动态表面形状测量系统
  • 批准号:
    24656291
  • 财政年份:
    2012
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Momentum and heat transfer governed by micro-mechanics between atmonphere and ocean
大气和海洋之间的微力学控制的动量和传热
  • 批准号:
    24360196
  • 财政年份:
    2012
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Bioluminescence-based imaging technique to measure fluid stresses
基于生物发光的成像技术测量流体应力
  • 批准号:
    21656120
  • 财政年份:
    2009
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Impact pressure responses in aerated turbulent flows under violent breaking waves
剧烈破碎波下充气湍流中的冲击压力响应
  • 批准号:
    18760368
  • 财政年份:
    2006
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Analysis of the Present State of Eutrophication of Lake Baikal
贝加尔湖富营养化现状分析
  • 批准号:
    10041176
  • 财政年份:
    1998
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A).
Experimental study on the ecological efficiencies of plankton communities
浮游生物群落生态效率实验研究
  • 批准号:
    07640845
  • 财政年份:
    1995
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Analysis of nitrogen and phosphorus transfer through aquatic food webs.
通过水生食物网进行氮和磷转移的分析。
  • 批准号:
    62540504
  • 财政年份:
    1987
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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Collaborative proposal: Workshop on ecological impacts of solar radiation management geoengineering; February, 2020; Port Jefferson, NY; October, 2020; Minneapolis, MN
合作提案:太阳辐射管理地球工程的生态影响研讨会;
  • 批准号:
    2343519
  • 财政年份:
    2023
  • 资助金额:
    $ 2.18万
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    Standard Grant
Effects of biostimulants and nanobubbles on yield and solar radiation use efficiency of cabbage
生物刺激剂和纳米气泡对甘蓝产量和太阳辐射利用效率的影响
  • 批准号:
    23K05201
  • 财政年份:
    2023
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Photosynthetic adaptation of an apple tree to low solar radiation and its effect on the growth and fruit production
苹果树对低太阳辐射的光合适应及其对生长和果实产量的影响
  • 批准号:
    23K05458
  • 财政年份:
    2023
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Collaborative Research: Spatiotemporal variability of solar radiation partitioning in the sea ice system: Improving climate models using observations from the MOSAiC field campaign
合作研究:海冰系统中太阳辐射分区的时空变化:利用 MOSAiC 实地活动的观测结果改进气候模型
  • 批准号:
    2138785
  • 财政年份:
    2022
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    $ 2.18万
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Separate and combined effects of solar radiation and air humidity on endurance exercise capacity and thermoregulation in the heat
太阳辐射和空气湿度对高温下耐力运动能力和体温调节的单独和综合影响
  • 批准号:
    22K11571
  • 财政年份:
    2022
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    $ 2.18万
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    Grant-in-Aid for Scientific Research (C)
Autonomous Guidance, Navigation, and Control of Spacecraft Formation Flying on Highly Elliptical Orbits in the Presence of Gravitational, Third-Body, Drag and Solar Radiation Pressure Perturbations
在存在引力、第三体、阻力和太阳辐射压力扰动的情况下,在高椭圆轨道上飞行的航天器编队的自主制导、导航和控制
  • 批准号:
    570065-2022
  • 财政年份:
    2022
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    $ 2.18万
  • 项目类别:
    Postgraduate Scholarships - Doctoral
Collaborative Research: Spatiotemporal variability of solar radiation partitioning in the sea ice system: Improving climate models using observations from the MOSAiC field campaign
合作研究:海冰系统中太阳辐射分区的时空变化:利用 MOSAiC 实地活动的观测结果改进气候模型
  • 批准号:
    2138788
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    2022
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    $ 2.18万
  • 项目类别:
    Standard Grant
Design of future low Earth orbit small satellites by combining aerodynamic force and solar radiation pressure
气动力与太阳辐射压相结合的未来近地轨道小卫星设计
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    22J13958
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    2022
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    Grant-in-Aid for JSPS Fellows
Development of an in-vehicle photovoltaic power generation system that can maximize power generation in response to partial shadows and rapid changes in solar radiation while driving.
开发车载光伏发电系统,可应对驾驶时的局部阴影和太阳辐射的快速变化,最大限度地提高发电量。
  • 批准号:
    22H01479
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    2022
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Development of solar radiation data assimilation method to improve the accuracy of rainfall prediction
开发太阳辐射数据同化方法提高降雨预报精度
  • 批准号:
    22K04336
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    2022
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