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Variation of carbon partitioning in newly expanded maize leaves and plant adaptive growth under extended darkness

Journal of Integrative Agriculture 2021年第9期20卷 2360-2371页

作者： liang xiao-gui SHEN Si GAO Zhen ZHANG Li ZHAO Xue ZHOU Shun-li College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193P.R.China School of Agricultural Sciences Jiangxi Agricultural UniversityNanchang 330045P.R.China Scientific Observation and Experimental Station of Crop High Efficient Use of Water in Wuqiao Ministry of Agriculture and Rural AffairsWuqiao 061802P.R.China Innovation Center of Agricultural Technology for Lowland Plain of Hebei Wuqiao 061802P.R.China

Plants must maintain a balance between their carbon(C)supply and utilization during the day–night cycle for continuous growth since C starvation often causes irreversible damage to crop *** is not well known how C fixation and allocation in the leaves of crops such as maize adapt to sudden environmental ***,to quantify primary C fixation and partitioning in photosynthetic maize leaves under extended darkness and to relate these factors to plant growth,maize seedlings were subjected to extended darkness(ED)for three successive days at the 6 th leaf fully expanded stage(V6).ED reduced plant growth and leaf chlorophyll levels but not the rate of net CO_2 *** a result of the reduction in photoassimilates,the accumulation of starch and total soluble carbohydrates(TSC)in mature leaves also decreased under ***,the percentage of the daily C fixation reserved in mature leaves *** transient C pools were largely composed of TSC and were mainly used for consumption by increased nocturnal respiration rather than for *** the days went on,both the amount of C accumulated and the percentage of the daily fixed C that was reserved in leaves decreased,which could be largely accounted for by the attenuated starch synthesis in all *** activities of ADPglucose pyrophosphorylase and soluble starch synthase decreased significantly over ***,this study concluded that both starch and TSC are involved in the coordination of the C supply and plant growth under a sudden C shortage but that they may be involved in different *** the ratio of reserved C to daily fixed C increased to maintain blade function under acute C starvation,both the amount and the proportion of C reserved in mature leaves decreased as plant growth continued in order to meet the growth demands of the plant.

关键词： maize starch total soluble carbohydrates carbon allocation extended darkness ongoing growth

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Synthesis and Properties of Poly(aryl ether ketone) Copolymers Containing 2,7-Naphthalene Moieties

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Chemical Research in Chinese Universities 2006年第1期22卷 114-117页

作者： LIU Si-jie NIU Ya-ming ZHU xiao-liang WANG gui-bin JIANG Zhen-hua Alan G. MacDiarmid Institute College of Chemistry Jilin University Changchun 130012 P.R. China

Poly（ aryl ether ketone） copolymers containing 2,7-naphthylene and hydroquinone（HQ） moieties with various compositions were prepared by the reaction of 4,4＇-difluorobenzophenone（DFB） 2,7-naphthylene and hydroquinone in the presence of sodium carbonate and potassium carbonate （ 19： 1, mass ratio） in diphenyl sulfone （DPS）. The thermal analysis results of the copolymers show that the glass transition temperatures（Tgs） increase, while the melting temperatures（Tra） and tile 5.0% weight loss temperatures （ Td ） decrease with the increase of the 2,7-naphthalene moieties. For the copolymers synthesized at a molar fraction of 2,7-naphthalene in the difluoro monomers being over 0.30, no peaks corresponding to the cold crystallization temperature and the melting temperature could be detected, indicating that these copolymers are almost amorphous. The crystal structures of the copolymers with a molar fraction of 2,7-naphthalene being less than 0. 30 are rhombic.

关键词： Poly( aryl ether ketone) Naphthalene derivatives Friedel-crafts acylation

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A simulation of winter wheat crop responses to irrigation management using CERES-Wheat model in the North China Plain

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Journal of Integrative Agriculture 2018年第5期17卷 1181-1193页

作者： ZHOU Li-li LIAO Shu-hua WANG Zhi-min WANG Pu ZHANG Ying-hua YAN Hai-jun GAO Zhen SHEN Si liang xiao-gui WANG Jia-hui ZHOU Shun-li College of Water Resources & Civil Engineering China Agricultural University College of Agronomy & Biotechnology China Agricultural University

To improve efficiency in the use of water resources in water-limited environments such as the North China Plain（NCP）, where winter wheat is a major and groundwater-consuming crop, the application of water-saving irrigation strategies must be considered as a method for the sustainable development of water resources. The initial objective of this study was to evaluate and validate the ability of the CERES-Wheat model simulation to predict the winter wheat grain yield, biomass yield and water use efficiency（WUE） responses to different irrigation management methods in the NCP. The results from evaluation and validation analyses were compared to observed data from 8 field experiments, and the results indicated that the model can accurately predict these parameters. The modified CERES-Wheat model was then used to simulate the development and growth of winter wheat under different irrigation treatments ranging from rainfed to four irrigation applications（full irrigation） using historical weather data from crop seasons over 33 years（1981–2014）. The data were classified into three types according to seasonal precipitation：〈100 mm, 100–140 mm, and 〉140 mm. Our results showed that the grain and biomass yield, harvest index（HI） and WUE responses to irrigation management were influenced by precipitation among years, whereby yield increased with higher precipitation. Scenario simulation analysis also showed that two irrigation applications of 75 mm each at the jointing stage and anthesis stage（T3） resulted in the highest grain yield and WUE among the irrigation treatments. Meanwhile, productivity in this treatment remained stable through different precipitation levels among years. One irrigation at the jointing stage（T1） improved grain yield compared to the rainfed treatment and resulted in yield values near those of T3, especially when precipitation was higher. These results indicate that T3 is the most suitable irrigation strategy under variable precipitation regimes for stabl

关键词： crop simulation modeling deficit irrigation precipitation level CERES-Wheat model winter wheat North China Plain

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Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： xiao Xiang Feng Gao Yu-gui Peng Peng Wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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不同方式保存的蜘蛛基因组DNA提取方法的探索

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蛛形学报 2009年第2期18卷 -页

作者：卢晓亮唐贵明张慧赵娜娜 xiao-liang gui-Ming Na-Na 内蒙古师范大学生命科学与技术学院呼和浩特010022

基因组DNA的提取是在分子水平上进行研究的基础,提取的DNA的纯度、浓度及结构的完整性是进行基因工程各项研究的前提条件.本文用SDS法、CTAB法和饱和Nac1法等3种方法分别对75%乙醇浸泡、无水乙醇浸泡、-20℃冷冻及新鲜蜘蛛标本基因组DN... 详细信息

基因组DNA的提取是在分子水平上进行研究的基础,提取的DNA的纯度、浓度及结构的完整性是进行基因工程各项研究的前提条件.本文用SDS法、CTAB法和饱和Nac1法等3种方法分别对75%乙醇浸泡、无水乙醇浸泡、-20℃冷冻及新鲜蜘蛛标本基因组DNA进行提取,并进行比较.实验结果表明:使用SDS法提取-20℃冷冻保藏的蜘蛛标本基因组DNA,可以达到分子生物学研究的要求.

关键词：不同方式保存蜘蛛基因组 DNA提取方法 Different Three 乙醇浸泡分子生物学研究 SDS法实验结果前提条件冷冻保藏基因工程分子水平标本完整性 CTAB法无水浓度

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玉米穗轴的颜色变化,是偶然还是与农艺性状存在关联?--以历年国审普通品种为例

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作物学报 2024年第3期50卷 771-778页

作者：梁星伟杨文亭金雨胡莉傅小香陈先敏周顺利申思梁效贵江西农业大学农学院/作物生理生态与遗传育种教育部重点实验室/植物化学与植物源农药创新团队江西南昌330045 中国农业大学农学院北京100193

玉米穗轴颜色在温带种质及商业化杂交品种中受到强烈的人工选择。为了明确我国不同区域玉米穗轴颜色选择的偏向性,探索轴色与多种农艺性状间的关联,本文以1992—2020年国审普通玉米品种为例,对品种轴色、审定区域及多项农艺性状进行了... 详细信息

玉米穗轴颜色在温带种质及商业化杂交品种中受到强烈的人工选择。为了明确我国不同区域玉米穗轴颜色选择的偏向性,探索轴色与多种农艺性状间的关联,本文以1992—2020年国审普通玉米品种为例,对品种轴色、审定区域及多项农艺性状进行了比较分析。在统计到的1604个品种中,红轴品种占比从1992年的50%逐渐提高至2020年的80%以上。其中,北方春玉米区、黄淮海夏玉米区和西北玉米区的红轴品种比例随年份更替提升速度高于西南和南方玉米区。对比分析红、白轴品种在株型、果穗和籽粒特性等方面的差异发现,近15~20年间的红轴品种平均穗长和穗行数均显著高于白轴。随年代更替,红轴品种的籽粒平均粗淀粉含量升高趋势快于白轴,但其平均粗脂肪含量下降明显,并且红轴品种平均粗蛋白含量和赖氨酸含量表现弱于白轴。因此,针对红色穗轴的强烈人工选择可能主要与玉米单株产量潜力的挖掘有关。但红轴品种在非生物逆境抗性和籽粒品质方面的表现需要进一步探讨。

关键词：玉米穗轴颜色人工选择国审品种区域分布农艺性状

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不同时期灌溉对华北平原春玉米穗粒数的影响

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作物学报 2021年第7期47卷 1324-1331页

作者：高震梁效贵张莉赵雪杜雄崔彦宏周顺利河北农业大学农学院/省部共建华北作物改良与调控国家重点实验室/河北省作物生长调控实验室河北保定071001 中国农业大学农学院北京100193 农业农村部作物高效用水吴桥科学观测实验站河北吴桥061802 河北省低平原区农业技术创新中心河北吴桥061802

干旱胁迫是限制华北地区春玉米穗粒数形成的关键因子,探究不同时期灌溉对穗粒数的影响,对提高该地区春玉米产量和水分利用效率具有重要意义。在2014—2016年进行3年大田试验,设置拔节期、大口期、抽雄期、吐丝后15 d灌水和不灌水对照(C... 详细信息

干旱胁迫是限制华北地区春玉米穗粒数形成的关键因子,探究不同时期灌溉对穗粒数的影响,对提高该地区春玉米产量和水分利用效率具有重要意义。在2014—2016年进行3年大田试验,设置拔节期、大口期、抽雄期、吐丝后15 d灌水和不灌水对照(CK),明确不同时期灌水对土壤水分变化、吐丝期穗位叶光合速率、穗粒数的影响及其相互关系。结果表明,在干旱和关键生育时期缺水的年份,灌水处理可以提高春玉米穗粒数,其中花期灌水较其他处理提高了1.4%~97.0%(2014年和2015年);而在多雨的2016年,各个灌水处理间穗粒数差异不显著。拔节期和大口期灌水促进了春玉米营养生长,提高了叶面积指数和生物量,但春玉米花期遭遇干旱胁迫仍会降低穗粒数。花期灌水处理在营养生长阶段受干旱胁迫影响,叶面积指数和生物量都降低,但保证了吐丝—授粉—籽粒建成关键阶段有充足的水分供应,其吐丝期光合速率较其他处理提高5.2%~32.8%。回归分析结果表明,吐丝期充足的土壤水含量可以显著提高春玉米光合速率(P=0.0034)和穗粒数(P=0.0137),但过多降水(降低光辐射)会影响光合作用及籽粒结实。因此,花期灌水是干旱年份保证春玉米穗粒数的重要措施。

关键词：春玉米穗粒数光合速率土壤含水量回归分析

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A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

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Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： xiao liang Xingping Quan xiaorui Geng Yujing Huang Yonghua Zhao Lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

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展青霉素免疫学检测方法研究进展

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食品安全质量检测学报 2023年第3期14卷 207-214页

作者：袁敏煊吴泓靓游丹阳郑俊豪梁效贵彭文文傅小香江西农业大学农学院南昌330045

展青霉素(patulin,PAT)作为一种对人类和动物有致畸、致癌等多种危害的真菌毒素,极易污染水果、蔬菜和谷物及其制品等。鉴于PAT污染范围广、超标检出多等问题,针对该毒素的即时检测对保障食品安全至关重要。免疫分析是快速检测真菌毒素... 详细信息

展青霉素(patulin,PAT)作为一种对人类和动物有致畸、致癌等多种危害的真菌毒素,极易污染水果、蔬菜和谷物及其制品等。鉴于PAT污染范围广、超标检出多等问题,针对该毒素的即时检测对保障食品安全至关重要。免疫分析是快速检测真菌毒素污染的有效手段之一。但是,尚未有灵敏性好、实用价值高的PAT单克隆抗体和基因工程抗体报道。本文综述了PAT免疫学检测方法研究现状,并通过梳理其免疫学检测发展历程,提出高效特异性PAT单克隆抗体制备的阻碍主要包括PAT存在较大的极性、非免疫原性、在动物体内易被降解的特性及抗体制备选用的类似物结构偏差过大等。因此,本文认为筛选或制备结构稳定且更接近PAT的类似化合物可能是特异性PAT抗体制备的关键。另一方面,随着新型材料和技术(如电化学传感器)的发展,应用性能优良的抗体替代物建立新型免疫学或非免疫学检测方法的前景非常广阔,本文为PAT快速免疫检测方法的建立和应用提供理论依据和参考。

关键词：展青霉素污染免疫学检测单克隆抗体特异性

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Catalyst–Support Interaction in Polyaniline‑Supported Ni_(3)Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn‑Air Batteries

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Nano-Micro Letters 2025年第1期17卷 176-190页

作者： xiaohong Zou Qian Lu Mingcong Tang Jie Wu Kouer Zhang Wenzhi Li Yunxia Hu xiaomin Xu xiao Zhang Zongping Shao liang An Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and TechnologyNanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China Department of Chemistry The Chinese University of Hong KongMa Lin BuildingShatinHong Kong SAR 999077People’s Republic of China WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia Research Institute for Advanced Manufacturing The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China

Catalyst–support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction(OER).Here we modulate the catalyst–support interaction in polyaniline-supported Ni_(3)Fe oxide(Ni_(3)Fe oxide/PANI)with a robust hetero-interface,which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm^(-2)and specific activity of 2.08 mA cm_(ECSA)^(-2)at overpotential of 300 mV,3.84-fold that of Ni_(3)Fe *** is revealed that the catalyst–support interaction between Ni_(3)Fe oxide and PANI support enhances the Ni–O covalency via the interfacial Ni–N bond,thus promoting the charge and mass transfer on Ni_(3)Fe *** the excellent activity and stability,rechargeable Zn-air batteries with optimum Ni_(3)Fe oxide/PANI are assembled,delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm^(-2).The regulation of the effect of catalyst–support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.

关键词： Catalyst-support interaction Supported catalysts Heterointerface Oxygen evolution reaction Zn-air batteries

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