農学部研究紹介2017-2018_英語版

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34Wood Utilization LaboratoryYoshihiroHOSOOAssociateProfessor•TreeMolecularBiology•TreeHistology&Cytology•WoodAnatomy•WoodPropertyActivitiesoftreesconstitutingforestsatthewhole-treelevelarecloselylinkedtotheiractivitiesatthecellularandmolecularlevels.Ourlaboratoryarestudyingthemechanismsoflifeactivitiesoftrees,includingpotassiummembranetransport,woodformation,andwoodproperties,usingvariousapproachesinvolvingthefieldssuchascellbiologyandmolecularbiology.Thesestudiesareexpectedtocontributetothedevelopmentoftreesthatgrowrapidly,withexcellentwoodqualityandhighenvironmentalstresstolerance,toproduceusablewoodmaterialsthatwillhelptoimprovingandpreservingtheenvironment.Wearemainlyconductingthefollowingresearches:(1)PotassiummembranetransportintreesPotassiumion(K+)isthemostabundantcationinplantcellsandplaysacentralroleinmanyaspectsofplantphysiology.Thetransport(uptakeorefflux)ofK+acrossbiologicalmembranesofthecellismediatedbymembranetransportproteins.WearestudyinggenesencodingK+membranetransportproteinsintrees.WeisolatedageneencodingK+membranetransportproteinfromaconiferforthefirsttimeintheworldandclarifieditsproperties.Weareanalyzingsamplescollectedfromtreesgrowninthefieldandsaplingsgrowningrowthchambersusingvarioustechniques.(2)WoodcellwallformationintreesWoodbiomassisthemostabundantbiomassontheearth.Themostfundamentalconstituentofthewoodinatreeisthehighlydevelopedcellwallformedbyxylemcells.Wearestudyingthemechanismofxylemcellwallformationusingcellbiologicalandmolecularapproaches.Predicted membrane topology of K+membrane transport protein (CjKUP1) in sugi(Cryptomeriajaopnica)CjKUP1 functions in K+uptake across the membranemembraneNCextracellularintracellularDivision of Forest and EnvironmentalSymbiosis SciencesLaboratory of Forest Resource ManagementMasatoKATOHProfessorRemotesensingLaserscanningGISForestsurveyForestmanagementOurcurrentactivitiesofresearchandeducationarecenteredinthetopicsofanalysisofforeststructurefromsurvey,forestresourcemanagementusingadvancedRemotesensingandGIS,andinterdisciplinaryjointresearchofforestmonitoring.Ourresearchfocusareasareinconnectionwithadvancedremotesensors;high-resolutionopticalsensor,LiDAR,HyperandSAR.WehavealsobeenmakingforestGISdatabasebasedonpreciseindividualtreelevelwhereareusefultostudyorverifyvariousremotesensingdataastestsiteinJapaneserepresentativeconiferplantations.Prof.isoutgoingandapersonofpositivethinking.An improving the precision of tree counting by combining tree detection with crown delineation and classification using high resolution airborne data ABCDABCAirborne color image of campus forest (left) Individual tree crowns map by species using original tech.Species and stem locations, with C. obtusatrees indicated by large red points overlaid on true color composite image.Laser scanning research for forestry with advanced remote sensors; airborne LiDAR, UAV and Terrestrial laser scanning.Interdisciplinary joint researchFinnish Geospatial research Institute(FGI) and Helsinki University in Finland, Pacific Forestry Center (PFC) and University of Victoria in Canada, Bogor Agricultural University (IPB) in Indonesia, etc.Division of Forest and EnvironmentalSymbiosis Sciences