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Salicylic acid positively regulates maize defenses against lepidopteran insects

Plant Diversity 2024年第4期46卷 519-529页

作者： Yohannes Besufekad Setotaw Jing Li Jinfeng Qi Canrong Ma mou zhang Cuilian Huang Lei Wang Jianqiang Wu Department of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant ResourcesKunming Institute of BotanyChinese Academy of SciencesKunming 650201China CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Plant Diversity and Specialty Crops Beijing 100093China

In response to insect attack,plants use intricate signaling pathways,including phytohormones,such as jasmonate(JA),ethylene(ET),and salicylic acid(SA),to activate ***(Zea mays)is one of the most important staple food crops around the *** studies have shown that the JA and ET signaling play important roles in maize defense against insects,but little is known about whether and how SA regulates maize resistance to insect *** this study,we ectopically expressed the NahG(salicylate hydroxylase)gene in maize plants(NahG maize)to block the accumulation of *** was found that compared with the wild-type(WT)maize,the NahG-maize exhibited decreased resistance to the generalist insects Spodoptera litura and Spodoptera frugiperda and the specialist Mythimna separata,and the compromised resistance in the NahG maize was associated with decreased levels of defensive metabolites benzoxazinoids(Bxs)and chlorogenic acid(CA).Quantification of simulated *** feedinginduced JA,JA-isoleucine conjugate(JA-Ile),and ET in the WT and NahG maize indicated that SA does not regulate JA or JA-Ile,but positively controls *** provide evidence suggesting that the SA pathway does not crosstalk with the JA or the ET signaling in regulating the accumulation of Bxs and *** analysis revealed that the bHLH,ERF,and WRKY transcription factors might be involved in SAregulated *** study uncovers a novel and important phytohormone pathway in maize defense against lepidopterous larvae.

关键词： Benzoxazinoids Salicylic acid Herbivory Maize Transcriptome

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1959-2021年间热带雨林区域的蒸发皿蒸发量呈下降趋势

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Journal of Plant Ecology 2024年第1期17卷 1-16页

作者： Yan Jin Ying zhang Xin Yang mou zhang Xin-Bo Guo Yun Deng Yue-Hua Hu Hua-Zheng Lu Zheng-Hong Tan School of Ecology and Environmental Science Yunnan UniversityKunming 650091China International Center for Climate and Environment Sciences Institution of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaMenglun 666303China Center for Plant Ecology Core Botanical GardensChinese Academy of SciencesMenglaMenglun 666303China

蒸发皿蒸发量(E_(pan))是衡量大气蒸发需求的重要指标。基于物理模型对西双版纳热带植物园中热带雨林综合气象观测场(XTBG气象站)的气象资料进行分析,有助于提高我们对西双版纳热带雨林区域水文循环状况的认识。本文利用1959-2021年的... 详细信息

蒸发皿蒸发量(E_(pan))是衡量大气蒸发需求的重要指标。基于物理模型对西双版纳热带植物园中热带雨林综合气象观测场(XTBG气象站)的气象资料进行分析,有助于提高我们对西双版纳热带雨林区域水文循环状况的认识。本文利用1959-2021年的观测资料,研究了E_(pan)的长期变化趋势,并进行了趋势检验、周期性评价和突变分析等相关分析。基于1979-2008年D20 E_(pan)数据和相关气象资料,利用Penman-Monteith和PenPan模型对E_(pan)进行模拟,采用偏微分归因法分析了影响E_(pan)的主导因素。研究结果表明,E_(pan)具有明显的周期变化,19 a为第一主周期。而且,西双版纳地区存在明显的‘蒸发悖论’现象。E_(pan)在1959-2008年和2009-2018年均呈下降趋势,其中1959-2008年下降幅度达到显著水平,为-3.404 mm·a^(-2)。通过对比分析,认为PenPan模型更适合用于模拟西双版纳地区的E_(pan)。为了确定影响E_(pan)的主要气象因子,选取了D20蒸发皿完整监测时期的数据(1979-2008)进行归因计算。太阳净辐射和饱和蒸汽压差的减小趋势可以有效抵消气温上升对E_(pan)的促进作用。因此,净辐射和饱和蒸汽压差的变化是西双版纳‘蒸发悖论’现象的主要触发因素。

关键词：蒸发皿蒸发量蒸发悖论 PenPan模型偏微分归因法驱动因素

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Glycosmis longipetala *** & ***,a new species of Rutaceae from China

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Journal of Systematics and Evolution 2009年第2期47卷 162-167页

作者： Feng-Juan mou Dian-Xiang zhang(South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China) South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China

Glycosmis longipetala *** & *** is described from Guangxi and Yunnan provinces in southwestern *** new species is similar to ***(Lour.) Pierre ex *** its simple leaves,but distinguishable in having long-elliptic or oblanceolate(***) leaves,long-ovoid to ellipsoid(***) floral buds,ovaries with many tubercles(***) and glabrous(***) *** pollen grains of the new species are 23.9±3.09(20.8-27.0)×22.0±1.80(20.4-24.4) μm in size with reticulate exine ornamentation in equatorial area and foveolate in polar *** chromosome number of the new species is 2n=72.

关键词： China Glycosmis Glycosmis longipetala F.J.mou & D.X.zhang new species pollen morphol-ogy polyploidy Rutaceae

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Spin logic devices based on negative differential resistance -enhanced anomalous Hall effect

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1437-1448页

作者： Hongming mou Ziyao Lu Yuchen Pu Zhaochu Luo Xiaozhong zhang Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China

Owing to rapid developments in spintronics,spin-based logic devices have emerged as promising tools for next-generation computing *** paper provides a comprehensive review of recent advancements in spin logic devices,particularly focusing on fundamental device concepts rooted in nanomagnets,magnetoresistive random access memory,spin–orbit torques,electric-field modu-lation,and magnetic domain *** operation principles of these devices are comprehensively analyzed,and recent progress in spin logic devices based on negative differential resistance-enhanced anomalous Hall effect is *** devices exhibit reconfigur-able logic capabilities and integrate nonvolatile data storage and computing *** current-driven spin logic devices,negative differential resistance elements are employed to nonlinearly enhance anomalous Hall effect signals from magnetic bits,enabling reconfig-urable Boolean logic ***,voltage-driven spin logic devices employ another type of negative differential resistance ele-ment to achieve logic functionalities with excellent cascading *** cascading several elementary logic gates,the logic circuit of a full adder can be obtained,and the potential of voltage-driven spin logic devices for implementing complex logic functions can be *** review contributes to the understanding of the evolving landscape of spin logic devices and underscores the promising pro-spects they offer for the future of emerging computing schemes.

关键词： spin logic spin–orbit torque negative differential resistance full-adder

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Subwavelength asymmetric Au–VO_2 nanodisk dimer for switchable directional scattering

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Chinese Physics B 2018年第11期27卷 321-326页

作者： Han-mou zhang Wu-Yun Shang HuaLu Fa-Jun Xiao Jian-Lin Zhao MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and Shaanxi Key Laboratory of Optical Information Technology School of Science Northwestern Polytechnical University Xi＇ an 710129 China

We propose an asymmetric Au–VO_2 nanodisk dimer for realizing a switchable directional scattering. Specifically, the directional scattering can be triggered on/off through controlling the phase transition of the VO_2 nanodisk from metallic to semiconductor state. More strikingly, an obvious directional scattering with the directivity of ～40 dB is achieved under the metallic state of VO_2 nanodisk. This tunable directional scattering is further explained with an interference model where the Au and VO_2 nanodisks are treated as two weakly interacting electric dipoles. The phase transition controlled scattering patterns of asymmetric Au–VO_2 nanodisk dimer are then well interpreted from the phase difference between these two dipoles.

关键词： localized surface plasmon resonance directional scattering vanadium dioxide

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Geochemistry, zircon U–Pb geochronology, and Hf isotopes of S-type granite in the Baoshan block, constraints on the age and evolution of the Proto-Tethys

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Acta Geochimica 2024年第1期43卷 40-58页

作者： Jianjun zhang Chuanlong mou Chendong Liu Yong zhang Ting Chen Hualiang Li Institute of Geological Survey East China University of TechnologyNanchang 330013China School of Earth Sciences East China University of TechnologyNanchang 330013China Chengdu Geological Survey Center Chengdu 610081China School of Water Resources&Environmental Engineering East China University of TechnologyNanchang 330013China

Geochemistry, zircon U–Pb geochronology, and Hf isotope data for the Early Paleozoic granites in the Baoshan Block reveal the Early Paleozoic tectonic evolution of the Proto-Tethys. The samples are high-K, calcalkaline, strongly peraluminous rocks with A/CNK values of 1.37–1.46, are enriched in SiO2, K2O, and Rb, and are depleted in Nb, P, Ti, Eu, and heavy rare earth elements,which indicates the crystallization fractionation of the granitic magma. Zircon U–Pb dating indicates that they formed in ca. 480 Ma. The Nansa granites have εHf(t) values ranging from-16.04 to 4.36 with corresponding TC DMages of 2.10–0.81 Ga, which suggests the magmas derived from the partial melting of ancient metasedimentary with minor involvement of mantle-derived components. A synthesis of data for the Early Paleozoic igneous rocks in the Baoshan block and adjacent(Tengchong,Qiangtang, Sibumasu, Himalaya, etc.) blocks indicates that these blocks were all aligned along the proto-Tethyan margin of East Gondwana in the Early Paleozoic. The Early Paleozoic S-type granites from Nansa were generated in a high-temperature and low-pressure(HTLP) extensional tectonic setting, which resulted from Andean-type orogeny instead of the final assembly of Gondwana or crustal extension in a non-arc environment. In certain places, an expanding environment may exist in opposition to the tectonic backdrop of the lithosphere’s thickening and shortening, leading the crust to melt and decompress,mantle-derived materials to mix, and a small quantity of peraluminous granite to emerge.

关键词： Baoshan block Early Paleozoic Granite Geochemistry Zircon Geochronology Hf isotope

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Elevated CO2 differentially affects tobacco and rice defense against lepidopteran larvae via the jasmonic acid signaling pathway

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Journal of Integrative Plant Biology 2018年第5期60卷 412-431页

作者： Chengkai Lu Jinfeng qi Christian Hettenhausen Yunting Lei Jingxiong zhang mou zhang Cuiping zhang Juan Song Jing Li Guoyan Cao Saif ul Malook Jianqiang Wu Department of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany the Chinese Academy of Sciences Kunming 650201 China University of Chinese Academy of Sciences Beijing 100049 China College of Plant Protection Yunnan Agriculture University Kunming 650201 China

Atmospheric CO2 levels are rapidly increasing due to human activities. However, the effects of elevated CO2 （ECO2） on plant defense against insects and the underlying mechanisms remain poorly understood. Here we show that ECO2 increased the photosynthetic rates and the biomass of tobacco and rice plants, and the chewing lepidopteran insects Spodoptera litura and Mythimna separata gained less and more mass on tobacco and rice plants, respectively. Consistently, under ECO2, the levels of jasmonic acid （JA）, the main phytohormone controlling plant defense against these lepidopteran insects, as well as the main defense-related metabolites, were increased and decreased in insectdamaged tobacco and rice plants. Importantly, bioassays and quantification of defense-related metabolites in tobacco and rice silenced in JA biosynthesis and perception indicate that ECO2 changes plant resistance mainly by affecting the JA pathway. We further demonstrate that the defensive metabolites, but not total N or protein, are the main factors contributing to the altered defense levels under ECO2. This study illustrates that ECO2 changes the interplay between plants and insects, and we propose that crops should be studied for their resistance to the major pests under ECO2 to predict the impact of ECO2 on future agroecosystems.

关键词： Georg Jander Cornell University USA

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远程指导验配角膜塑形镜在青少年近视防控中的应用价值研究

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实用医院临床杂志 2024年第1期21卷 104-108页

作者：江文捷伍晓辉冯怡黄旭牟章兵西南医科大学附属成都三六三医院武侯院区眼视光部四川成都610041

目的比较远程指导验配角膜塑形镜与传统“面对面”验配方式的有效性与安全性,初步评估远程指导验配角膜塑形镜在青少年近视防控中的应用价值。方法采用前瞻性对照研究。纳入同一医师远程指导验配角膜塑形镜的近视患儿65例(122眼)为试验... 详细信息

目的比较远程指导验配角膜塑形镜与传统“面对面”验配方式的有效性与安全性,初步评估远程指导验配角膜塑形镜在青少年近视防控中的应用价值。方法采用前瞻性对照研究。纳入同一医师远程指导验配角膜塑形镜的近视患儿65例(122眼)为试验组,同期“面对面”验配的近视患儿71例(139眼)为对照组,配戴后1天、1周、1个月、3个月进行随访,比较两种验配方式的有效性(包括戴镜视力、戴镜球镜度数、镜片配适分级、裸眼视力、镜片偏心距离)和安全性(角膜上皮点状着色分级)。结果两组戴镜1d时戴镜视力、戴镜球镜度数及镜片配适分级,差异均无统计学意义(P>0.05);两组戴镜后1天、1周、1个月、3个月的裸眼视力、镜片偏心距离、角膜上皮点状着色分级比较,差异均无统计学意义(P>0.05)。结论远程指导验配角膜塑形镜的有效性和安全性较好,在青少年近视防控中具有较高的应用价值。

关键词：角膜塑形镜远程医疗有效性安全性

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A Synchronization Acquisition Algorithm Based on the Frequency Hopping Pulses Combining

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China Communications 2024年第4期21卷 74-87页

作者： She Honghan Cheng Yufan zhang Wenzihan zhang Yaohui Zhao Yuheng Shen Haoran mou Ying National Key Laboratory of Wireless Communications UESTCChengdu 611731China

As modern electromagnetic environments are more and more complex,the anti-interference performance of the synchronization acquisition is becoming vital in wireless *** the rapid development of the digital signal processing technologies,some synchronization acquisition algorithms for hybrid direct-sequence(DS)/frequency hopping(FH)spread spectrum communications have been ***,these algorithms do not focus on the analysis and the design of the synchronization acquisition under typical *** this paper,a synchronization acquisition algorithm based on the frequency hopping pulses combining(FHPC)is ***,the proposed algorithm is composed of two modules:an adaptive interference suppression(IS)module and an adaptive combining decision *** adaptive IS module mitigates the effect of the interfered samples in the time-domain or the frequencydomain,and the adaptive combining decision module can utilize each frequency hopping pulse to construct an anti-interference decision metric and generate an adaptive acquisition decision threshold to complete the *** and simulation demonstrate that the proposed algorithm significantly enhances the antiinterference and anti-noise performances of the synchronization acquisition for hybrid DS/FH communications.

关键词： adaptive anti-interference frequency hopping synchronization acquisition

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Type one autoimmune pancreatitis based on clinical diagnosis: A case report

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World Journal of Clinical Cases 2024年第14期12卷 2438-2444页

作者： Bi-Yu zhang mou-Wang Liang Shuang-Xi zhang Department of Gastroenterology Guangzhou University of Chinese Medicine Shunde HospitalFoshan 528300Guangdong ProvinceChina Department of Gastroenterology Guangzhou University of Chinese MedicineGuangzhou 510006Guangdong ProvinceChina

BACKGROUND Autoimmune pancreatitis(AIP)is a rare form of autoimmune-mediated pancrea-titis,which is easily misdiagnosed as pancreatic cancer and thus treated *** studied the diagnosis and treatment of a patient with type 1 AIP recent-ly admitted to our hospital,and reviewed the literature to provide a reference for clinical diagnosis of *** SUMMARY The chief complaint was yellowing of the body,eyes and urine for 21 *** pa-tient's clinical presentation was obstructive jaundice and imaging suggested pan-creatic *** was difficult to distinguish between inflammation and *** immunoglobulin G4(IgG4)was markedly ***4 is an important serological marker for type 1 *** patient was diagnosed with AIP,IgG4-related cholangitis,acute cholecystitis and hepatic *** applying hormonal therapy,the patient's symptoms improved *** the same time,imaging suggested that pancreatic swelling subsided,and liver function and other biochemical indicators *** treatment was *** In patients with pancreatic swelling,the possibility of AIP should be considered.

关键词： Autoimmune pancreatitis Characteristics Diagnosis Immunoglobulin G4 Case report

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