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Altered arbuscular mycorrhizal fungi communities favoring invasive weed Ageratina adenophora Sprengl competition over natives

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Altered arbuscular mycorrhizal fungi communities favoring in...

Comprehensive Ecosystem Service Changes and Their Drivers in the Middle Reaches of Jinsha River

第三届全国生物入侵大会

作者： Wen-qing Yu~(1,2),Li-li Zhang~3,fang-hao wan~1,wan-xue Liu~(1*) 1 State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection, Chinese Academy of Agricultural Sciences,Beijing 100094 2 Heilongjiang Academy of Land Reclamation Sciences,Jiamusi,Heilongjiang,154007

To investigate the difference of Arbuscular mycorrhizal fungi(AMF) community between exotic weed Ageratina adenophora invaded soil and native weeds dominated soil,and to inspect the feedback of the different AMF community to competitive interaction of the exotic weed with native plants,we conducted field and glasshouse *** field experiments showed that the aboundance of Glomus geosporum,Acaulospora dilatata and Acaulosporafoveata in exotic *** dominated soil

关键词： AM symbiosis AMF Feedback to plants Competitive interactions Community diversity Exotic plant Mechanism of invasion Plant-plant interactions Plant-soil interactions

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Huanjing Kexue/Environmental Science 2025年第3期46卷 1585-1596页

作者： Zhang, Xiu Zhang, Xuan Cui, Lei Chen, hao Song, Jia wan, Fan Li, Chong College of Water Sciences Beijing Normal University Beijing100875 China China Renewable Energy Engineering Institute Beijing100120 China Northwest Engineering Corporation Limited POWERCHINA Xi'an710065 China Shaanxi Union Research Center University and Enterprise for River and Lake Ecosystems Protection and Restoration Xi'an710065 China

Hydropower development is an important starting point for China to implement the dual carbon strategy in the energy field in the new era,and the influence mechanism of a large-scale hydropower development mode with ecological priority on watershed ecosystem service has become complicated. Therefore,exploing the ecosystem services change under the influence of hydropower development is highly important. As one of the frequent anthropogenic activity areas in southwest China,the investigation on the impact of hydropower development on ecosystem service is developing from single factor and single process to multi-factor comprehensive ecosystem service functions. This study conducted a multi-scale analysis in the middle reaches of Jinsha River,a hydropower development base in southwest China,to quantitatively evaluate the spatio-temporal characteristics of water yield,carbon storage,and habitat quality before(2000)and after(2020)hydropower development using the InVEST model;to assess the three ecosystem services based on a comprehensive ecosystems service index(CESI)from the perspective of balanced development;and to investigate the mechanism of CESI change under hydropower development. The results indicated that:① At the watershed level,water yield showed a decreasing trend(by 18.22%),whereas carbon storage(by 0.26%)and habitat quality(by 0.45%)showed a subtle increasing trend from 2000 to 2020. ② The three ecosystem services in the sub-watershed with different levels of hydropower development exhibited different changing characteristics: the three ecosystem services in sub-watersheds with higher levels of hydropower development decreased,whereas carbon storage and habitat quality in sub-watersheds without hydropower development increased. ③ The CESI showed a downward trend(by 8.13%),and pinpointed regions of increasing CESI were in the up and down reaches of the regions, whereas those of decreasing CESI were in the middle reaches of the regions. The sustained hot spots

关键词： Carbon sequestration

Competition effect of Cogon grass,Imperata cylindrica to Crofton weed,Ageratina adenophora

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Competition effect of Cogon grass,Imperata cylindrica to Cro...

Formation mechanism of multiple spallation and its penetration induced by shear localization in NiTi alloy under implosion loading

第三届全国生物入侵大会

作者： Fu-rong Gui~1,Zheng-yue Li~1,fang-hao wan~(2*) 1.College of Plant Protection,Yunnan Agricultural University,Kunming 650201,China 2.Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100081,China

Invasive alien species are the most important indicators of environmental change worldwide;it may cause environmental degradation,biodiversity loss,food and water shortage,and high possibility and severity of natural *** in management of invasive species has grown rapidly in the recent years,and it is a good way to replace invaded plant by utilizing valuable native *** competition effects between the native Gramineous plant,Cogon grass,Imperata cylindrical and the invasive Compositae plant,Crofton weed,Ageratina adenophora were analyzed in the present study to provide basis for control of this invasive plant The results showed that,there was significant mutual antagonism between *** and *** relative competitive ability of *** was higher than that of ***,which heavily suppressed the growth of *** by shoot *** to ***,the seedlings of *** were germinated faster, and its plant height and average leaf area were *** culture with *** may restrain growth and tillering of ***,and the plant height,average leaf area and chlorophyll content were 49%,72%and 77%of those in monoculture,*** there no significant influence on *** for mixed culture with ***,furthermore,the tillering of *** can be *** relative yield(RY) of *** was significantly higher than those of A. adenophora,and the relative yield total(RYT) was significantly lower than *** relationships mentioned above may become more obvious with the prolonged time of mixed culturing.

关键词： Ageratina adenophora Imperata cylindrical Relative yield Competition effect Replacement control

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Matter and Radiation at Extremes 2025年第1期10卷 81-97页

作者： Xianye Wu Xiaoyang Pei Xiang Chen hao Zhang Jin wang Xin Yang Meizhen Xiang Shang Gao fang wang School of Materials and Energy Southwest UniversityChongqing 400715China Institute of Fluid Physics China Academy of Engineering PhysicsMianyang 621999China State Key Laboratory of Nuclear Physics and Technology Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China School of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China

This study uses nonequilibrium molecular dynamics simulations to explore the dynamic failures and deformation mechanisms of a cylindrical shell composed of nanocrystalline nickel-titanium alloy under implosion *** discover that some individual spall planes are sequentially generated in the material along the propagation of a radial stress wave,indicative of the formation of multiple *** larger grain sizes,void nucleation at the first spallation occurs in a coexisting intergranular/transgranular manner,whereas with decreasing grain size,voids tend to nucleate along the grain ***,the spall strength exhibits a transition from an inverse Hall-Petch to a Hall-Petch *** larger grain sizes,at the secondary spallation,localized shearing zones and grain boundaries provide potential void-nucleated ***,the formation of shear deformation bands promotes grain refinement,contributing to a reduction in the dislocation-induced strengthening ***,a lower spall strength is produced,in contrast to the first *** the grain size becomes smaller,voids nucleate mostly along grain boundaries,and plastic deformation is dominated by dense grain ***,the high temperature caused by shear localization leads to material weakening,and in turn there is a significant decrease in the spall strength for the secondary spallation,compared with the ***,significant penetration between two spall planes is observed for large grain size,which can be attributed to the nucleation of voids on linking grain boundaries,with temperatures exceeding the melting point of the material.

关键词： grain alloy deformation

Differential expression of Hsp70 mRNA may underline elevated heat-resistance in Bemisia tabaci B-biotype females

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Construction of axial and point chirality through Ni-catalyzed sila-cycloaddition reaction via desymmetrization and (dynamic) kinetic resolution

第一届全国生物入侵学术研讨会

作者： Zhi-Chuang L~a,fang-hao wan~(a,b,*) (a State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection, CAAS,Beijing 100081,PR China.b Center for Management of Invasive Alien Species,Ministry of Agriculture,Beijing 100081,PR China)

The survivals of *** females and males were examined with heat *** amount of Hsp70 mRNA in the two *** sexes under heat shocks and under a range of lower temperatures was quantified by TaqMan real-time RT-PCR *** results obtained are presented below: *** females were significantly more heat-resistant than males at 44℃. ***70 mRNA in *** females increased gradually from 25 to 35℃,and the increase accelerated sharply from 37.5℃and reached a peak at 42℃,and it then decreased at 44℃. ***70 mRNA in *** males increased continuously from 25℃until it reached a peak at 44℃. ***70 mRNA expression in *** females and males displayed no significant difference at 25℃. Hsp70 mRNA expression in *** males was significantly higher than that in the females in a range of 30-35℃and 44℃,and was significantly lower than that in the females at 40℃and 42℃. Our results indicate that *** females were more heat-resistant than males,which was mediated, at least in part,via the activation of Hsp70.

关键词： Bemisia tabaci Heat resistance Hsp70 mRNA Sexual dichotocarpism TaqMan real-time RT-PCR

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Science China Chemistry 2025年

作者： Hua-Jie Zhu Ming-hao Shen Jia-Wei Si Wei-Ke Zhu Xiao-Jun fang Fei Ye Jian Cao Zheng Xu Li-Wen Xu Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University State Key Laboratory for Oxo Synthesis and Selective Oxidation Suzhou Research Institute Lanzhou Institute of Chemical PhysicsChinese Academy of Sciences

Recent developments in chirality chemistry have revealed remarkable instances of atropisomers featuring multiple chiral elements. Despite significant progress in the synthesis and application of atropisomers, developing a synthetic protocol for the simultaneous introduction of axial and point chirality is still a fascinating challenge. In this context, we present a convenient and versatile method for synthesizing novel atropisomers with axial and point chirality. This approach, based on a new reaction mechanism with nickel-controlled Si–C bond activation, facilitates the controllable migratory insertion of aldehydes into the Ni–C bond. We utilize multidimensional strategies of desymmetrization, kinetic resolution and dynamic kinetic resolution to complete enantioselective nickel-catalyzed ring expansion of benzosilacyclobutenes with aldehydes. The design of multidimensional kinetic resolution, desymmetrization, and dynamic resolution, features a straightforward catalytic system, mild reaction conditions, and broad functional group tolerances. Various axially chiral biaryl oxasilacycles bearing carbon-or siliconstereogenic centers are obtained with excellent diastereo-and enantio-selectivities(up to >20:1 dr and >99.9% ee) through the use of a chiral Ni complex with a large cavity-type 1,1,4,4-tetra-aryl-2,3-O-isopropylidene-L-threitol(TADDOL)-derived phosphoramidite ligand.

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Temporal-specific single-cell atlas of human type A aortic dissection reveals immune cell dynamics and therapeutic targets

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Science Bulletin 2025年第2期70卷 167-171页

作者： Wenting Zhao Juan Chen Yi Xia Zhixi Wei Sitong wan Huiyuan Guo Yanling hao Wenjian Jiang Hongjia Zhang Fazheng Ren Peng An Yongting Luo Junjie Luo Department of Nutrition and Health China Agricultural UniversityBeijing 100193China Department of Cardiovascular Surgery Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China

Stanford type A aortic dissection(STAAD/AD)is a degenerative aortic remodeling disease with an extremely high mortality rate and poor prognosis[1,2].Dissections can be classified into acute(90 d)stages depending on the time interval between the onset of initial symptoms and presentations[3].Patients who survive the acute phase progress to subacute and ultimately chronic stages[4,5].

关键词： dissection acute aortic

Plant protection: Current status, progress and challenges in China

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Journal of Integrative Agriculture 2019年第4期18卷 703-704页

作者： wan fang-hao State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural Sciences

China is one of the countries in the world that is severely damaged by crop diseases,pests,and *** are more than 1 700 species of agricultural pests occurring annually,53 of which are on the list of the 100 worst pests in the world(Chen and wang 2014;Wu 2018).Currently,China is still greatly challenged by a growing problem of agricultural pests that th reate n the economy and health and pose ecological risks underthe conditions of global climate change,economic integration,crop structure adjustment and so *** protect!on agai nst crop diseases,in sect pests and noxious weeds is necessary to ensure high-quality crop production and food ***,traditional strategies of plant protect!on have mainly involved chemical pesticides.

关键词： Plant protection crop diseases agricultural pests

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北美刺龙葵在中国的适生区预测

生物安全学报 2016年第2期25卷 106-113页

作者：王瑞冼晓青万方浩中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室北京100193 青岛农业大学农学与植物保护学院山东青岛266109

【背景】北美刺龙葵是一种全球广泛分布的恶性杂草,已被列入我国进境检疫性有害生物名单。近年来北美刺龙葵不断随进口货物传入我国,明确其传入途径和适生区对控制其入侵具有重要意义。【方法】采用GIS、空间统计学、Maxent生态位模型... 详细信息

【背景】北美刺龙葵是一种全球广泛分布的恶性杂草,已被列入我国进境检疫性有害生物名单。近年来北美刺龙葵不断随进口货物传入我国,明确其传入途径和适生区对控制其入侵具有重要意义。【方法】采用GIS、空间统计学、Maxent生态位模型等方法分析了北美刺龙葵的传入途径与潜在分布区,并通过ROC分析法对模型进行检验。【结果】跨区域农产品贸易是北美刺龙葵全球扩散的驱动力与传入我国的主要途径。生态模型预测结果表明,北美刺龙葵在我国具有广阔的适生区,除黑龙江、吉林、内蒙古、青海、甘肃、西藏、四川西北部以外的区域都是其在我国的适生区,其中高风险区主要集中在东部和南部沿海、西南边境和新疆的部分地区。AUC值为0.789,表明本研究建立的Maxent模型的预测能力较强,能够很好地拟合物种已知分布的环境生态位。【结论与意义】北美刺龙葵在我国的传入风险极高。基于北美刺龙葵在我国的主要传入途径与潜在扩散媒介的时空分布,划定了重点监测的区域,建议对适生区内极易传入的高风险区如港口、机场、物流中转站、加工厂等开展早期监测预警,以预防其再次入侵与进一步扩散蔓延。

关键词：北美刺龙葵适生区入侵植物生态位模型