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Leaf Positioning of Arabidopsis in Response to Blue Light

Molecular Plant 2008年第1期1卷 15-26页

作者： Shin-ichiro Inoue Toshinori Kinoshit atsushi takemiya Michio Doi Ken-ichiro Shimazaki Department of Biology Faculty of Science Kyushu University Ropponmatsu Fukuoka 810-8560 Japan Research and Development Center for Higher Education Kyushu University Ropponmatsu Fukuoka 810-8560 Japan

Appropriate leaf positioning is essential for optimizing photosynthesis and plant growth. However, it has not been elucidated how green leaves reach and maintain their position for capturing light. We show here the regulation of leaf positioning under blue light stimuli. When 1-week-old Arabidopsis seedlings grown under white light were transferred to red light （25 i, mol m^-2 s^-1） for 5 d, new petioles that appeared were almost horizontal and their leaves were curled and slanted downward. However, when a weak blue light from above （0.1 i, mol m^-2 s^-1） was superimposed on red light, the new petioles grew obliquely upward and the leaves were flat and horizontal. The leaf positioning required both phototropinl （photl） and nonphototropic hypocotyl 3 （NPH3）, and resulted in enhanced plant growth. In an nph3 mutant, neither optimal leaf positioning nor leaf flattening by blue light was found, and blue light-induced growth enhancement was drastically reduced. When blue light was increased from 0.1 to 5 i, mol m^-2 s^-1, normal leaf positioning and leaf flattening were induced in both photl and nph3 mutants, suggesting that phot2 signaling became functional and that the signaling was independent of photl and NPH3 in these responses. When plants were irradiated with blue light （0.1 i, mol m^-2 s^- 1） from the side and red light from above, the new leaves became oriented toward the source of blue light. When we transferred these plants to both blue light and red light from above, the leaf surface changed its orientation to the new blue light source within a few hours, whereas the petioles initially were unchanged but then gradually rotated, suggesting the plasticity of leaf positioning in response to blue light. We showed the tissue expression of NPH3 and its plasma membrane localization via the coiled-coil domain and the C-terminal region. We conclude that NPH3-mediated phototropin signaling optimizes the efficiency of light perception by inducing both optimal leaf posit

关键词： Leaf Positioning of Arabidopsis Response Blue Light

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Nitric oxide inhibits blue light-dependent stomatal opening via a subset of abscisic acid signaling pathways in Vicia guard cells

Nitric oxide inhibits blue light-dependent stomatal opening ...

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2007中国植物生理学会全国学术会议

作者：张骁 atsushi takemiya Toshinori Kinoshita Ken-ichiro Shimazaki 河南大学生命科学学院河南省植物逆境生物学重点实验室 Department of Biology Faculty of Science Kyushu University Ropponmatsu Fukuoka 810-8560 Japan

Stomatal closing to abscisic acid(ABA)and stomatal opening to light stimuli comprise two main aspects of stomatal ***,evidence increasingly points that nitric oxide(NO),as the same as HO,is a prerequisite for ABA signal transduction in guard cells,although its situation within any one signal cascade is still poorly *** this study,we investigated this effect of sodium nitroprusside(SNP),a NO donor,on both stomatal pore size under different actinic light conditions and blue light(BL)-dependent H+

关键词： Abscisic acid Blue light H+ pumping Nitric oxide

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公路高架桥交通引起的地面振动：分析和验证

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岩土工程学报 2008年第1期30卷 86-92页

作者：陈锋黄茂松竹宫宏和同济大学地下建筑与工程系上海200092 冈山大学环境理工学部日本冈山市7008530

针对普通公路高架桥引起的地面振动问题提出了一种预测地面响应的有效方法。该方法假设高架桥的桥墩在交通荷载下是刚体运动,根据实测数据求得基础承台的输入荷载,并进而由一个准三维有限元方法所得基础承台中心的阻抗函数以及地面响应... 详细信息

针对普通公路高架桥引起的地面振动问题提出了一种预测地面响应的有效方法。该方法假设高架桥的桥墩在交通荷载下是刚体运动,根据实测数据求得基础承台的输入荷载,并进而由一个准三维有限元方法所得基础承台中心的阻抗函数以及地面响应的传递函数,可以预测周围地面的响应。无论是试验车的情况还是通常的繁忙交通工况,计算的结果和地面响应的实测数据符合得很好。这证明了该方法的可靠性以及对高架桥交通引起的地面振动的通用性。

关键词：高架桥地面振动准三维有限元方法阻抗函数

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深桩基高墩台多跨连续梁桥的地震反应分析

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世界桥梁 1986年第2期 34-43页

作者： HIROKAZU takemiya ,YOSHIKAZU YAMADA ,周先雁湖南大学土木系

本文在考虑桥梁的上部结构、基础和土的相互作用的情况下,对具有深桩基高墩台的多跨连续梁桥进行了地震反应分析.就本文所述的这种复杂结构体系而言,采用首先分别列出土一基础和上部结构的方程式,然后将它们综合成整体的子结构法是有利... 详细信息

本文在考虑桥梁的上部结构、基础和土的相互作用的情况下,对具有深桩基高墩台的多跨连续梁桥进行了地震反应分析.就本文所述的这种复杂结构体系而言,采用首先分别列出土一基础和上部结构的方程式,然后将它们综合成整体的子结构法是有利的。本文着重研究垂直方向和水平方向地震波的传播效应,前者是由土和基础运动的相互作用引起的,而后者则是由于各基础输入不同相位的运动引起的。

关键词：上部结构地震波传播特性桩顶船舶结构矩阵数学分析墩基础深基础阻抗函数多跨连续梁桥高墩台地震反应分析结构分析桩基

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Variation in experimental autoimmune encephalomyelitis scores in a mouse model of multiple sclerosis

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World Journal of Neurology 2013年第3期3卷 56-61页

作者： Chisen Takeuchi Kanato Yamagata Takako takemiya Tokyo Metropolitan Kita Medical and Rehabilitation Center for the Disabled Tokyo 114-0033 Japan Neural Plasticity Project Tokyo Metropolitan Institute of Medical Science Tokyo 156-8506 Japan Medical Research Institute Tokyo Women’s Medical University Tokyo 162-8666 Japan

Multiple sclerosis(MS) is a common demyelinating central nervous system disease associated with progressive physical impairment. To study the mechanism underlying disease pathogenesis and develop potential treatments, experimental autoimmune encephalomyelitis(EAE) is often used as an animal model. EAE can be induced in various species by introducing specific antigens, which ultimately result in motor dysfunction. Although the severity of the paralysis is indicated using the EAE score, there is no standard scoring system for EAE signs, and there is variability between research groups with regard to the exact EAE scoring system utilized. Here, we describe the criteria used for EAE scoring systems in various laboratories and suggest combining EAE score with another quantitative index to evaluate paralysis, such as the traveled distance, with the goal of facilitating the study of the mechanisms and treatment of MS.

关键词： Multiple sclerosis Experimental autoimmune encephalomyelitis Experimental autoimmune encephalomyelitis score Motor dysfunction

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