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Light-stabilized GIL1 suppresses PIN3 activity to inhibit hypocotyl gravitropism

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Journal of Integrative Plant Biology 2024年第09期 1886-1897页

作者： Xiaolian Wang Yanfang Yuan Laurence Charrier zhaoguo deng Markus Geisler Xing Wang deng Haodong Chen Center for Plant Biology School of Life Sciences Tsinghua University Tsinghua-Peking Center for Life Sciences School of Advanced Agricultural Sciences and School of Life Sciences Peking-Tsinghua Center for Life Sciences Peking University Department of Biology University of Fribourg

Light and gravity coordinately regulate the directional growth of plants. Arabidopsis Gravitropic in the Light 1(GIL1) inhibits the negative gravitropism of hypocotyls in red and far-red light, but the underlying molecular mechanisms remain elusive. Our study found that GIL1 is a plasma membrane-localized protein. In endodermal cells of the upper part of hypocotyls, GIL1 controls the negative gravitropism of hypocotyls. GIL1 directly interacts with PIN3 and inhibits the auxin transport activity of PIN3. Mutation of PIN3 suppresses the abnormal gravitropic response of gil1 mutant. The GIL1 protein is unstable in darkness but it is stabilized by red and far-red light. Together, our data suggest that light-stabilized GIL1 inhibits the negative gravitropism of hypocotyls by suppressing the activity of the auxin transporter PIN3,thereby enhancing the emergence of young seedlings from the soil.

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民国时期贵州地区五倍子资源的开发利用

六盘水师范学院学报 2024年第2期36卷 32-40页

作者：邓召国杨斌贵州师范大学历史与政治学院贵州贵阳550025 贵州师范大学喀斯特生态文明研究中心贵州贵阳550025

五倍子是一种具有多重应用价值的传统中药材、染料林木和工业原料,主要为肚倍和角倍两大类,广泛分布于贵州各地。早在明弘治时期,贵州便开始开发利用五倍子资源,并作为商品参与贸易活动。至民国时期,随着制药业、纺织业、制革业等的快... 详细信息

五倍子是一种具有多重应用价值的传统中药材、染料林木和工业原料,主要为肚倍和角倍两大类,广泛分布于贵州各地。早在明弘治时期,贵州便开始开发利用五倍子资源,并作为商品参与贸易活动。至民国时期,随着制药业、纺织业、制革业等的快速发展,市场对五倍子的需求迅速增长。这一趋势推动五倍子贸易日益繁荣,并使其成为贵州出口货物的重要组成部分。从最初的野生散布到大规模种植,五倍子的产量得到了显著提高,对当地农业经济产生了深远影响。

关键词：民国时期贵州五倍子开发利用

Spatiotemporal Variability and Environmental Controls of Temperature Sensitivity of Ecosystem Respiration across the Tibetan Plateau

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Advances in Atmospheric Sciences 2024年第9期41卷 1821-1842页

作者： Danrui SHENG Xianhong MENG Shaoying WANG zhaoguo LI Lunyu SHANG Hao CHEN Lin ZHAO Mingshan deng Hanlin NIU Pengfei XU Xiaohu WEN Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Zoige Plateau Wetlands Ecosystem Research Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

Warming-induced carbon loss via ecosystem respiration(R_(e))is probably intensifying in the alpine grassland ecosystem of the Tibetan Plateau owing to more accelerated warming and the higher temperature sensitivity of R_(e)(Q_(10)).However,little is known about the patterns and controlling factors of Q_(10)on the plateau,impeding the comprehension of the intensity of terrestrial carbon-climate feedbacks for these sensitive and vulnerable ***,we synthesized and analyzed multiyear observations from 14 sites to systematically compare the spatiotemporal variations of Q_(10)values in diverse climate zones and ecosystems,and further explore the relationships between Q_(10)and environmental ***,structural equation modeling was utilized to identify the direct and indirect factors predicting Q_(10)values during the annual,growing,and non-growing *** results indicated that the estimated Q_(10)values were strongly dependent on temperature,generally,with the average Q_(10)during different time periods increasing with air temperature and soil temperature at different measurement depths(5 cm,10 cm,20 cm).The Q_(10)values differentiated among ecosystems and climatic zones,with warming-induced Q_(10)declines being stronger in colder regions than elsewhere based on spatial *** was the most cardinal factor in predicting annual Q_(10)values,significantly and positively correlated with Q_(10).Soil temperature(Ts)was identified as the other powerful predictor for Q_(10),and the negative Q_(10)-Ts relationship demonstrates a larger terrestrial carbon loss potentiality in colder than in warmer regions in response to global *** that the interpretations of the effect of soil moisture on Q_(10)were complicated,reflected in a significant positive relationship between Q_(10)and soil moisture during the growing season and a strong quadratic correlation between the two during the annual and non-growing *** findings are conducive to imp

关键词： carbon cycle eddy covariance measurements ecosystem respiration Q_(10)value Tibetan Plateau climate change

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文旅融合背景下永历帝在黔遗迹资源开发建议

安顺学院学报 2023年第6期25卷 33-37页

作者：邓召国贵州师范大学历史与政治学院贵州贵阳550025

为促进贵州历史文化资源与旅游开发的深度融合,实现贵州旅游的高质量发展,通过史籍记载及专家考证成果,对永历帝在黔遗迹进行了初步梳理,并基于文旅融合背景,提出了一体规划、一体开发、一体宣传的开发建议。以期推动永历帝在黔遗迹旅... 详细信息

为促进贵州历史文化资源与旅游开发的深度融合,实现贵州旅游的高质量发展,通过史籍记载及专家考证成果,对永历帝在黔遗迹进行了初步梳理,并基于文旅融合背景,提出了一体规划、一体开发、一体宣传的开发建议。以期推动永历帝在黔遗迹旅游资源与贵州旅游开发深度融合,为地方社会经济和文旅发展服务。

关键词：文旅融合永历帝在黔遗迹开发建议

WRF-Hydro大气-陆面-水文耦合模式应用研究综述

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高原气象 2024年第4期43卷 809-825页

作者：李振洁孟宪红舒乐乐赵林李照国邓明珊陈亚玲陈昊中国科学院西北生态环境资源研究院冰冻圈科学与冻土工程重点实验室甘肃兰州730000 甘肃省黄河源区气候与环境野外科学观测研究站甘肃兰州730000 中国科学院大学北京100049

在人类活动加重气候变暖的背景下,极端水文气象事件发生概率增加。数值模式作为研究水循环和极端水文事件的有效工具,已在全球范围内得到广泛应用。为深入理解气候变化背景下全球陆地水循环时空演变规律,揭示大气-陆面-水文互馈机制,大... 详细信息

在人类活动加重气候变暖的背景下,极端水文气象事件发生概率增加。数值模式作为研究水循环和极端水文事件的有效工具,已在全球范围内得到广泛应用。为深入理解气候变化背景下全球陆地水循环时空演变规律,揭示大气-陆面-水文互馈机制,大气-陆面-水文耦合过程模拟研究已成为国际大气、水文等学科研究的热点之一。本文首先回顾和梳理了大气-陆面-水文耦合模式的发展历程,阐明了大气-陆面-水文耦合模式WRF-Hydro(Weather Research and Forecasting Model Hydrological modeling system)的优势,并系统总结了WRF-Hydro模式的主要敏感性参数分析及模式在对地表径流、土壤湿度、能量水分循环以及相关大气和水文过程等方面的应用。最后探讨WRF-Hydro大气-陆面-水文耦合模式未来发展趋势,提出应着眼于发展有效的尺度转换方案、完善参数化方案以及开展流域内大气、水文变量时空分布高分辨率模拟等方面,以期系统提升耦合模式对大气、陆面过程及水文过程的刻画能力。

关键词： WRF-Hydro模式大气-陆面-水文耦合研究进展水文

Preparation and evaluation of PEGylated phospholipid membrane coated layered double hydroxide nanoparticles

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Asian Journal of Pharmaceutical Sciences 2016年第3期11卷 396-403页

作者： Mina Yan zhaoguo Zhang Shengmiao Cui Xuefei Zhang Weijing Chu Ming Lei Ke Zeng Yunhui Liao Yihui deng Chunshun Zhao School of Pharmacy Shenyang Pharmaceutical University School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou Higher Education Mega Center Guangdong Pharmaceutical University Guangzhou Higher Education Mega Center

The aim of the present study was to develop layered double hydroxide(LDH) nanoparticles coated with PEGylated phospholipid membrane. By comparing the size distribution and zeta potential, the weight ratio of LDH to lipid materials which constitute the outside membrane was identified as 2:1. Transmission electron microscopy photographs confirmed the core-shell structure of PEGylated phospholipid membrane coated LDH(PEG-PLDH)nanoparticles, and cell cytotoxicity assay showed their good cell viability on Hela and BALB/C-3 T3 cells over the concentration range from 0.5 to 50 μg/mL.

关键词： Preparation In vitro evaluation Layered double hydroxides Phospholipid membrane Size distribution Zeta potential

Dataset of Comparative Observations for Land Surface Processes over the Semi-Arid Alpine Grassland against Alpine Lakes in the Source Region of the Yellow River

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Advances in Atmospheric Sciences 2023年第6期40卷 1142-1157页

作者： Xianhong MENG Shihua LYU zhaoguo LI Yinhuan AO Lijuan WEN Lunyu SHANG Shaoying WANG Mingshan deng Shaobo ZHANG Lin ZHAO Hao CHEN Di MA Suosuo LI Lele SHU Yingying AN Hanlin NIU Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Zoige Plateau Wetland Ecosystem Research Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Plateau Atmosphere and Environment Key Laboratory of Sichuan Province School of Atmospheric SciencesChengdu University of Information TechnologyChengdu 610225China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China University of Chinese Academy of Sciences Beijing 100049China

Thousands of lakes on the Tibetan Plateau(TP) play a critical role in the regional water cycle, weather, and climate. In recent years, the areas of TP lakes underwent drastic changes and have become a research hotspot. However, the characteristics of the lake-atmosphere interaction over the high-altitude lakes are still unclear, which inhibits model development and the accurate simulation of lake climate effects. The source region of the Yellow River(SRYR) has the largest outflow lake and freshwater lake on the TP and is one of the most densely distributed lakes on the TP. Since 2011,three observation sites have been set up in the Ngoring Lake basin in the SRYR to monitor the lake-atmosphere interaction and the differences among water-heat exchanges over the land and lake surfaces. This study presents an eight-year(2012–19), half-hourly, observation-based dataset related to lake–atmosphere interactions composed of three sites. The three sites represent the lake surface, the lakeside, and the land. The observations contain the basic meteorological elements,surface radiation, eddy covariance system, soil temperature, and moisture(for land). Information related to the sites and instruments, the continuity and completeness of data, and the differences among the observational results at different sites are described in this study. These data have been used in the previous study to reveal a few energy and water exchange characteristics of TP lakes and to validate and improve the lake and land surface model. The dataset is available at National Cryosphere Desert Data Center and Science Data Bank.

关键词： field observation dataset lake-atmosphere interaction energy and water exchanges the source region of the Yellow River Tibetan Plateau

高压电缆缓冲层烧蚀缺陷超声检测技术仿真研究

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高压电器 2022年第11期58卷 230-237,260页

作者：何维晟吴照国邓帮飞向洪任啸王谦黄会贤国网重庆市电力公司电力科学研究院重庆400022 国网重庆市电力公司重庆400015

近年来波纹铝护套结构高压电缆中出现的缓冲层烧蚀缺陷造成巨额经济损失和不良社会影响,然而该缺陷产生及发展机理尚不明确,检测技术仍处于探索阶段。文中基于缓冲层间隙放电导致烧蚀缺陷的理论,开展高压电缆缓冲层烧蚀缺陷产生超声信... 详细信息

近年来波纹铝护套结构高压电缆中出现的缓冲层烧蚀缺陷造成巨额经济损失和不良社会影响,然而该缺陷产生及发展机理尚不明确,检测技术仍处于探索阶段。文中基于缓冲层间隙放电导致烧蚀缺陷的理论,开展高压电缆缓冲层烧蚀缺陷产生超声信号特征研究,探索超声检测技术在缓冲层烧蚀缺陷检测领域的可行性。文中首先基于高压电缆结构特征以及缓冲层多孔介质特性,建立缓冲层多孔介质波模型以及缓冲层放电产生超声波模型。随后通过数值模型得到缓冲层放电产生超声波声压等效波形以及不同层数缓冲层在不同频率下的吸声系数,建立有限元仿真模型分析了缓冲层放电产生超声波的传播特性以及在电缆外护套处的检测信号灵敏度。若放电发生在缓冲层内层,难以通过超声检测技术检出该信号,在波纹铝护套波谷处产生较为强烈的放电时,具有通过超声技术检测该信号的可行性。

关键词：高压电缆缓冲层局部放电多孔介质超声检测

陇东黄土高原不同农作物下垫面小气候与蒸散发特征观测分析

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高原气象 2023年第4期42卷 899-912页

作者：谢丽君奥银焕李照国孟宪红王少影邓明珊付春伟晋伟中国科学院西北生态环境资源研究院中国科学院寒旱区陆面过程与气候变化重点实验室甘肃兰州730000 中国科学院大学北京100049 成都信息工程大学大气科学学院高原大气与环境四川省重点实验室四川成都610225

陇东黄土高原是我国重要的雨养农业区,研究不同农田的陆面过程差异对于认识区域陆气相互作用具有重要意义。本文基于2021年6月至2022年5月甘肃省庆阳市的农田微气象和蒸渗仪观测数据,分析了苹果、玉米、小麦三种农作物的小气候和蒸散发... 详细信息

陇东黄土高原是我国重要的雨养农业区,研究不同农田的陆面过程差异对于认识区域陆气相互作用具有重要意义。本文基于2021年6月至2022年5月甘肃省庆阳市的农田微气象和蒸渗仪观测数据,分析了苹果、玉米、小麦三种农作物的小气候和蒸散发特征差异;结合相关分析与敏感性分析,探讨了不同作物下垫面蒸散发的主要影响因素。结果表明:(1)生长季苹果地的温度、地气温差较小;玉米地相对湿度高于小麦地,冠层内最显著;玉米地反照率全年都较小,但在5月由于地膜覆盖明显增大,并且其年均净辐射明显低于苹果地和小麦地;(2)蒸散发量日变化规律基本遵循生长中期>生长初期>成熟期,生长中期玉米的蒸散发最大,最高达到4.9 mm·d^(-1),小麦地全年日蒸散发量小于3 mm·d^(-1);整个生长季内,苹果地日蒸散发量变化最大,小麦地较为稳定;(3)净辐射是苹果地和玉米地生长季蒸散发变化最主要的驱动因子,但对小麦地的影响相对较小;三地生长季蒸散发对于饱和水汽压差的敏感性均小于非生长季。

关键词：黄土高原农田小气候蒸渗仪蒸散发敏感性分析