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Salicylic acid receptors activate jasmonic acidsignalling through a noncanonical pathway topromote effector-triggered immunity

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Salicylic acid receptors activate jasmonic acidsignalling th...

AB型LaYNiMn（x=0.5,1.0,1.5）合金的结构和电化学储氢性能

2018全国植物生物学大会

作者： Lijing Liu Fathi-Mohamed Sonbol bethany huot YangnanGu John Withers MusokiMwimba Jian YaoSheng Yang He Xinnian Dong School of life and Science Shandong University

It is an apparent conundrum how plants evolved effector-triggered immunity(ETI),involvingprogrammed cell death(PCD),as a major defence mechanism against biotrophic pathogens,because ETI-associated PCD could leave them vulnerable to necrotrophic pathogens thatthrive on dead host ***,during ETI,the normally antagonistic defencehormones,salicylic acid(SA) and jasmonic acid(JA) associated with defence againstbiotrophs and necrotrophs respectively,both accumulate to high *** this study,wemade the surprising finding that JA is a positive regulator of RPS2-mediated *** of JA-responsive genes and de novo JA synthesis following SA accumulation isactivated through the SA receptors NPR3 and NPR4,instead of the JA receptor *** evidence that NPR3 and NPR4 may mediate this effect by promoting degradation ofthe JA transcriptional repressor *** unique interplay between SA and J A offers apossible explanation of how plants can mount defence against a biotrophic pathogen withoutbecoming vulnerable to necrotrophic pathogens.

关键词： Salicylic Acid Jasmonic Acid NPR3 NPR4 JAZ ETI

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稀土 2024年

作者：贺祥云王辉徐杰钟海长赵世谦 huot Jacques 华南理工大学材料科学与工程学院广东省先进储能材料工程技术研究中心厦门理工学院材料科学与工程学院河南理工大学化学化工学院河南省煤炭绿色转化重点实验室魁北克大学三河分校氢能研究所

设计了AB4型La2YNi12-xMnx（x=0.5, 1.0, 1.5）储氢合金,通过优化淬火温度,制备了3R-AB4型单相La2YNi11Mn合金,探索了La-Y-Ni-Mn系AB4型超晶格相的形成规律和电化学储氢性能。研究发现,随着淬火温度的升高A5B19相转变为AB4相,在997℃得... 详细信息

设计了AB4型La2YNi12-xMnx（x=0.5, 1.0, 1.5）储氢合金,通过优化淬火温度,制备了3R-AB4型单相La2YNi11Mn合金,探索了La-Y-Ni-Mn系AB4型超晶格相的形成规律和电化学储氢性能。研究发现,随着淬火温度的升高A5B19相转变为AB4相,在997℃得到了AB4单相合金。Mn取代Ni增大了合金的晶胞体积,同时增大了[A2B4]亚单元体积,提高了合金的结构稳定性,改善了合金的电化学性能。AB4单相合金的最大放电容量为346m Ah/g,充放电循环300圈后容量为216.6 m Ah/g。

关键词：镍氢电池 La-Y-Ni系超晶格储氢合金 AB 相电化学性能

The evolutionary strategies of plant defenses have a dynamic impact on the adaptations and interactions of vectors and pathogens

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Insect Science 2013年第3期20卷 297-306页

作者： Ordom Brian huot Punya Nachappa Cecilia Tamborindeguy Department of Entomology Texas A&M University College Station TX 77843 USA Department of Biology Indiana University-Purdue University Fort Wayne Fort Wayne IN 46805 USA

Plants have evolved and diversified to reduce the damages imposed by in- fectious pathogens and herbivorous insects. Living in a sedentary lifestyle, plants are constantly adapting to their environment. They employ various strategies to increase per- formance and fitness. Thus, plants developed cost-effective strategies to defend against specific insects and pathogens. Plant defense, however, imposes selective pressure on in- sects and pathogens. This selective pressure provides incentives for pathogens and insects to diversify and develop strategies to counter plant defense. This results in an evolution- ary arms race among plants, pathogens and insects. The ever-changing adaptations and physiological alterations among these organisms make studying plant-vector-pathogen interactions a challenging and fascinating field. Studying plant defense and plant protec- tion requires knowledge of the relationship among organisms and the adaptive strategies each organism utilize. Therefore, this review focuses on the integral parts of plant-vector- pathogen interactions in order to understand the factors that affect plant defense and disease development. The review addresses plant-vector-pathogen co-evolution, plant defense strategies, specificity of plant defenses and plant-vector pathogen interactions. Improving the comprehension of these factors will provide a multi-dimensional perspective for the future research in pest and disease management.

关键词： coevolution induced defense phytohormones plant-vector-pathogen interactions specificity of defense transmission mechanism

The influence of bacteria on multitrophic interactions among plants, psyllids, and pathogen

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Insect Science 2017年第6期24卷 961-974页

作者： Cecilia Tamborindeguy Ordom Brian huot Freddy Ibanez Julien Levy Department of Entomology Texas A&M University College Station Texas USA Department of Horticultural Sciences Texas A&M University College Station Texas USA

The recent emergence ofseveralplant diseases caused by psyllid-borne bacterial pathogens worldwide （Candidatus Liberibaeter spp.） has created renewed interest on the interaction between psyllids and bacteria. In spite of these efforts to understand psyllid association with bacteria, many aspects of their interactions remain poorly understood. As more organisms are studied, subtleties on the molecular interactions as well as on the effects of the bacteria on the psyllid host are being uncovered. Additionally, psyllid-borne bacterial phytopathogens can also affect the host plant, which in turn can impact psyllid physiology and behavior. Here, we review the current literature on different aspects of the influence of bacteria on multitrophic interactions among plants, psyllids, and pathogens. We then highlight gaps that need to be addressed to advance this field, which can have significant implications for controlling these newly emergent and other plant diseases.

关键词： bacteria interaction Liberibacter microbiome phytoplasma psyllid

Responses of ramie(Boehmeria nivea L.)to increasing rare earth element(REE)concentrations in a hydroponic system

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Journal of Rare Earths 2022年第5期40卷 840-846,I0006页

作者： Chang Liu Wenshen Liu Hermine huot Yiming Yang Meina Guo Jean Louis Morel Yetao Tang Rongliang Qiu School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Laboratoire Sols et Environnement INRAE-Universitéde Lorraine54505Vandceuvre-les-NancyFrance Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou 510275China Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation Sun Yat-sen UniversityGuangzhou 510275China

A number of studies have focused on the effects of rare earth elements(REEs) on crop plants,while little attention has been paid on how tolerant plant species respond to increasing mixed REE *** this study,ramie(Boehmeria nivea L.) was exposed to a series of REE concentrations prepared with equimolar mixtures of 16 REEs(i.e.0,1.6,8,16,80,160,400,800 μmol/L) in order to explore REE accumulation and fractionation characteristics in ramie and the responses of this plant to mixed *** show that ramie root and shoot biomasses are unaffected under lower REE concentrations(1.6-80 μmol/L),while the growth of ramie and the uptake of nutrients especially Ca and Mn are largely inhibited under higher REE concentrations(160-800 μmol/L).The P and Mo concentrations in the roots increase with the increasing REE concentrations in the solution,suggestive of an involvement of P and Mo in dealing with the high concentrations of REEs in this *** preferential uptake of Ce and heavy REEs(HREEs) and the preferential transport of HREEs within the plant lead to a positive Ce anomaly and a HREE enrichment in ramie *** study suggests that ramie could be a good candidate for the phyto re mediation of heavily REE-contaminated soils(e.g.,REE mine tailings in southern China).Our results also shed light on points of taking into account phytoremediation management strategies of REEcontaminated soils(e.g.,P and Mo fertilization).

关键词： Phytoremediation Ramie Rare earth elements Fractionation Molybdenum Phosphorus

Regulation of Breast Cancer Progression by Phosphorylation of the Tumor Suppressor Tropomyosin-1 Alpha

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Journal of Cancer Therapy 2015年第9期6卷 783-792页

作者： Mouna Zerradi Francois Houle Jacques huot Oncology Division of Laval University Hospital Research Centre(CRCHU of Quebec)and Laval University Cancer Research Centre L’Hotel-Dieu of QuebecQuebec CityCanada

Background: Tropomyosin 1 alpha chain (Tm1) is an actin-binding protein that regulates the endothelial cell response to oxidative stress following its phosphorylation at Serine 283 (S283). Tm1 is also a major tumor suppressor in breast cancer. In the present study, we investigated the role of phosphorylation of Tm1 in regulating its tumor suppressor properties. Methods: MDA MB231 breast cancer cells stably overexpressing wild type form of Tm1 or Tm1 mutants (S283A and S283E) were generated. Proliferation and cell viability were assayed by means of the enzymatic cleavage of the tetrazolium salt WST-1 to formazan dye by cellular mitochondrial dehydrogenases. Adhesion assays were performed at various periods of time on cells grown on plastic. Cell migration was evaluated by using the wound-healing assay and by measuring transendothelial migration of cancer cells. Malignant transformation in vitro was determined by using the anchorage-independent growth assay on soft agar. Results: We found that cells expressing the phosphomimetic form of Tm1 S283E/Tm1 are characterized by an increased adhesion to the substratum. Moreover, the migration of MDA-MB231/S283E/Tm1 cells in a wound closure assay is reduced compared to parental cells or those expressing the non-phosphorylatable form of Tm1 (S283A). Similarly, the transendothelial migration of MDA-MB231/S283E/Tm1 cells is also reduced as compared to the other cell lines. Moreover, we found that the cells expressing the S283A mutants form more colonies in soft agar that those expressing the S283E mutants. Conclusion: Phosphorylation of Tm1 at Ser283 contributes to its anti-tumor properties, and this effect results mainly from an increase in cell adhesion associated with a decrease in their migratory and invasive potentials.

关键词： Tropomyosin 1 Phosphorylation F-Actin Cell Migration Invasion

Impact of severe plastic deformation on kinetics and thermodynamics of hydrogen storage in magnesium and its alloys

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Journal of Materials Science & Technology 2023年第15期146卷 221-239页

作者： Kaveh Edalati Etsuo Akiba Walter J.Botta Yuri Estrin Ricardo Floriano Daniel Fruchart Thierry Grosdidier Zenji Horita Jacques huot Hai-Wen Li Huai-Jun Lin Ádám Révész Michael J.Zehetbauer WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER)Kyushu UniversityFukuokaJapan International Research Center for Hydrogen Energy Kyushu UniversityFukuokaJapan Departamento de Engenharia de Materiais Universidade Federal de São CarlosSao Carlos-SPBrazil Department of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia Department of Mechanical Engineering the University of Western AustraliaCrawleyWA 6009Australia School of Applied Sciences University of Campinas(UNICAMP)LimeiraSão PauloBrazil Institut Néel CNRS&UGA38042 GrenobleFrance JOMI-LEMAN SA 74890 FessyFrance Universitéde Lorraine Laboratory of Excellence on Design of Alloy Metals for low-mass Structures(DAMAS)MetzF-57070France Universitéde Lorraine Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux(LEM3 UMR 7239)MetzF-57070France Graduate School of Engineering Kyushu Institute of TechnologyKitakyushuJapan Magnesium Research Center Kumamoto UniversityKumamotoJapan Synchrotron Light Application Center Saga UniversitySagaJapan Hydrogen Research Institute Universitédu QuébecàTrois-Rivières3351 des ForgesTrois-RivièresQC G9A 5H7Canada Hefei General Machinery Research Institute Hefei 230031China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China Department of Materials Physics Eötvös UniversityBudapestH-1518P.O.B.32BudapestHungary Faculty of Physics University of ViennaBoltzmanngasse 5A-1090 WienAustria

Magnesium and its alloys are the most investigated materials for solid-state hydrogen storage in the form of metal hydrides,but there are still unresolved problems with the kinetics and thermodynamics of hydrogenation and dehydrogenation of this group of *** plastic deformation(SPD)methods,such as equal-channel angular pressing(ECAP),high-pressure torsion(HPT),intensive rolling,and fast forging,have been widely used to enhance the activation,air resistance,and hydrogenation/dehydrogenation kinetics of Mg-based hydrogen storage materials by introducing ultrafine/nanoscale grains and crystal lattice *** severely deformed materials,particularly in the presence of alloying additives or second-phase nanoparticles,can show not only fast hydrogen absorption/desorption kinetics but also good cycling *** was shown that some materials that are apparently inert to hydrogen can absorb hydrogen after SPD ***,the SPD methods were effectively used for hydrogen binding-energy engineering and synthesizing new magnesium alloys with low thermodynamic stability for reversible low/room-temperature hydrogen storage,such as nanoglasses,high-entropy alloys,and metastable phases including the high-pressureγ-MgH2 *** work reviews recent advances in the development of Mg-based hydrogen storage materials by SPD processing and discusses their potential in future applications.

关键词： Severe plastic deformation(SPD) Nanostructured materials Ultrafine-grained(UFG)materials Magnesium hydride(MgH_(2)) Magnesium-based alloys Hydrogen absorption Hydrogenation kinetics Hydrogen storage thermodynamics

超富集植物对稀土元素吸收转运解毒与分异的研究进展

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土壤学报 2019年第4期56卷 785-795页

作者：陈莺燕刘文深袁鸣郭美娜刘畅 huot Hermine 汤叶涛仇荣亮中山大学环境科学与工程学院广州510275 广东省环境污染控制与修复技术重点实验室(中山大学) 广州510275 广东省土壤重金属污染修复工程技术研究中心广州510275

稀土是重要的战略资源,在现代高科技行业和农业生产中发挥着重要的作用。随着稀土需求量的与日俱增,稀土矿山开发加剧,产生了大面积的稀土废弃尾砂地进而污染农田,对当地生态环境和居民健康构成威胁。植物采矿是指在金属污染地上种植超... 详细信息

稀土是重要的战略资源,在现代高科技行业和农业生产中发挥着重要的作用。随着稀土需求量的与日俱增,稀土矿山开发加剧,产生了大面积的稀土废弃尾砂地进而污染农田,对当地生态环境和居民健康构成威胁。植物采矿是指在金属污染地上种植超富集植物,在恢复植被和修复污染土壤的同时,还可通过收割地上部实现金属回收利用,是一种原位和低成本的污染土壤修复手段。探究超富集植物重金属富集机理是实现植物采矿的基础,但相对于Ni、Zn、As等超富集植物的研究,稀土超富集植物吸收转运和耐受稀土机制的研究仍然缺乏。本文结合近年国内外研究,从植物富集稀土的四个关键过程综述超富集植物对稀土的吸收、转运和分布解毒机制以及与稀土分异之间的关系,并提出超富集植物中稀土分异的概念模型。

关键词：稀土元素吸收转运分异超富集植物植物采矿

海岸水中反射系数、扩散衰减系数和阳光感应荧光性同时倒置的浮游生物生物量的恢复

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水处理信息报导 2008年第6期 42-43页

作者： huot,Yanniek

开发了一种使浮游生物吸附作用恢复的模型，该吸附作用是浮游生物生物量的变化，通过观察固定在海岸水中的辐射及收集的反射系数（R）、和扩散衰减系数（Kd）确定，其中发色团溶解有机物（CDOM）的高浓度会混淆常规海洋色度的计算规则... 详细信息

开发了一种使浮游生物吸附作用恢复的模型，该吸附作用是浮游生物生物量的变化，通过观察固定在海岸水中的辐射及收集的反射系数（R）、和扩散衰减系数（Kd）确定，其中发色团溶解有机物（CDOM）的高浓度会混淆常规海洋色度的计算规则。本发明同时使用两种先进的模型。

关键词：反射系数浮游生物衰减系数生物量海岸扩散荧光性光感应