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Is thirty-seven years sufficient for full return of the ant biota following restoration?

Ecological Processes 2013年第1期2卷 183-194页

作者： Jonathan D Majer Brian Heterick Thomas Gohr elliot hughes Lewis Mounsher Andrew Grigg Curtin Institute for Biodiversity and Climate Curtin UniversityPO Box U1987PerthWA 6845Australia Alcoa of Australia Ltd PO Box 172PinjarraWA 6208Australia

Introduction:An assessment of whether rehabilitated mine sites have resulted in natural or novel ecosystems requires monitoring over considerable periods of time or the use of space-for-time substitution(chronosequence)***:To provide an assessment of ecosystem recovery in areas mined for bauxite in 1975,the ant fauna of one area planted with Eucalyptus resinifera,one seeded with mixed native species,one topsoiled but unrestored,and a forest reference was subjected to a‘long-term’study by sampling monthly and latterly annually between 1976 and 1989 using pitfall *** plots were resampled in 2012.A companion‘short-term’chronosequence study was performed in 1979 in 28 bauxite mines of various ages and restored by a range of different methods,plus three forest *** order to examine the assertion that the observed differences between restored areas and forest references will lessen with time,sampling using comparable methods was repeated in 2012 in seven of the original plots,representing progressive advances in rehabilitation technology:planted pines;planted eastern states eucalypts;planted native eucalypts;planted eucalypts over seeded understorey;and planted eucalypts on fresh,double-stripped topsoil,plus two forest reference ***:Ant and other invertebrate richness in the long-term study was initially superior in the seeded plot,with little difference between the planted and unplanted *** was concluded that although composition of the ant fauna had converged on that of the forest over the 14-year period,differences still *** 2012 resampling revealed that ant species richness and composition had deteriorated in the seeded plot,while values in the unplanted plot,which now supported naturally colonised trees and an understorey,had *** between all rehabilitated plots and forest still *** with the long-term study,the rate of fauna return and the type of ants present in the short-term study p

关键词： Bauxite mining Ant bioindicator Long-term study Chronosequence Seeding Planting Succession

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ETR1 Integrates Response to Ethylene and Cytokinins into a Single Multistep Phosphorelay Pathway to Control Root Growth

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Molecular Plant 2019年第10期12卷 1338-1352页

作者： Marketa Zdarska Abigail Rubiato Cuyacot Paul TTarr Amel Yamoune Agnieszka Szmitkowska Vendula Hrdinová Zuzana Gelová elliot MMeyerowitz Jan Hejátko Functional Genomics and Proteomics of Plants Central European Institute of Technology and National Centre for Biomolecular ResearchMasaryk UniversityCETEC-MUKamenice 5/A262500 BrnoCzech Republic Howard hughes Medical Institute California Institute of Technology1200 East California BoulevardPasadenaCA 91125USA Division of Biology and Biological Engineering 156-29 California Institute of Technology1200 East California BoulevardPasadenaCA 91125USA

Cytokinins and ethylene control plant development via sensors from the histidine kinase(HK)***,downstream signaling pathways for the key phytohormones are *** we report that not only cytokinin but also ethylene is able to control root apical meristem(RAM)size through activation of the multistep phosphorelay(MSP)*** found that both cytokinin and ethylene-dependent RAM shortening requires ethylene binding to ETR1 and the HK activity of *** receiver domain of ETR1 interacts with MSP signaling intermediates acting downstream of cytokinin receptors,further substantiating the role of ETR1 in MSP *** revealed that both cytokinin and ethylene induce the MSP in similar and distinct cell types with ETR1-mediated ethylene signaling controlling MSP output specifically in the root transition *** identified members of the MSP pathway specific and common to both hormones and showed that ETR1-regulated ARR3 controls RAM ***1-mediated MSP spatially differs from canonical CTR1/EIN2/EIN3 ethylene signaling and is independent of EIN2,indicating that both pathways can be spatially and functionally ***,we demonstrated that canonical ethylene signaling controls MSP responsiveness to cytokinin specifically in the root transition zone,presumably via regulation of ARR10,one of the positive regulators of MSP signaling in Arabidopsis.

关键词： cytokinin ethylene crosstalk signaling root development

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Orchestration of a Leaf Axil Stem Cell Niche Establishment by Hormones

Orchestration of a Leaf Axil Stem Cell Niche Establishment b...

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中国遗传学会第九次全国会员代表大会暨学术研讨会

作者： WANG Ying WANG Jin SHI Bihai YU Ting QI Jiyan MEYEROWITZ elliot JIAO Yuling Jiao State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of Sciences Howard hughes Medical Institute and Division of Biology California Institute of Technology Sainsbury Laboratory at Cambridge University

Plants differ from many animals in their ability to initiate new cycles of growth and development,which rely on the establishment and activity of branch meristems harboring new stem cell *** the ecologically dominant seed plants,this is achieved by axillary meristems(AMs), which are established in the axil of each leaf base and develop into lateral *** we describe the initial processes of Arabidopsis AM *** find AMs initiate from leaf axil cells with low auxin through stereotypical stages of reporter gene ***,ectopic overproduction of auxin in the leaf axil efficiently inhibits AM ***,our results demonstrate that auxin efflux is required for the leaf axil auxin minimum and *** lowering of auxin levels,a subsequent cytokinin signaling pulse is observed prior to AM *** analysis suggests that cytokinin perception and signaling are both required for AM initiation Finally,we show that cytokinin overproduction in the leaf axil rescue AM initiation-deficient *** observations and experiments provide a mechanistic framework for understanding AM initiation,which has implications for land plant development and for crop improvement

关键词： Axillary meristem auxin cytokinin

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考虑内部互耦裂缝阵列天线的设计

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现代雷达 1989年第6期11卷 72-75页

作者： R.S.elliot W.R.O'Joughlin 黄漪 hughes Missile Systems Group

要改进裂缝阵列天线的性能 (更低的副辦电子和更好的输入匹配),就要消除原先设计程序中所作的近似。其中,一个重要的改变就是考虑内部高次模的耦合。考虑这种耦合后,对现存的设计公式需作一简单而重要的修正。

关键词：裂缝阵列天线互耦

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A gene expression map of shoot domains reveals new regulatory mechanisms

A gene expression map of shoot domains reveals new regulator...

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中国植物学会第十六次全国会员代表大会暨85周年学术年会

作者： Caihuan Tian Ying Wang Haopeng Yu Jun He Jin Wang Bihai Shi Qingwei Du Nicholas J.Provart elliot M.Meyerowitz Yuling Jiao State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of Sciences College of Life Sciences University of Chinese Academy of Sciences West China Biomedical Big Data Center West China Hospital/West China School of Medicineand Medical Big Data CenterSichuan University Horticultural Plant Biology and Metabolomics Center Institute of Science and TechnologyFujian Agricultural and Forestry University Zhongshan School of Medicine Sun Yat-sen University Laboratoire Reproduction et Developpement des Plantes Univ LyonENS de Lyon Department of Cell and Systems Biology Centre for the Analysis of Genome Evolution and FunctionUniversity of Toronto Howard hughes Medical Institute and Division of Biology and Biological Engineering California Institute of Technology

＜正＞Gene regulatory networks control development via cell type-specific gene *** seed plants,self-renewing stem cells located in the shoot apical meristem（SAM）produce leaves from the SAM peripheral *** develop polarity patterns following initiation to form a planar *** we provide a comparison of translating RNAs among SAM and leaf *** used RNA sequencing to quantify gene

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