ACBDABC5COOHOHIntegratedBioscience DivisionIntegrated Bioscience DivisionLaboratory of Plant PathologyLaboratory of Soil BiologyShinpeiKATOUAssociate Professor, Ph. D.KatsuharuSAITOProfessor,Ph.D.functionsofmycorrhizalandnodulesymbiosesofcrops,whichsymbiosesLossofcropproductioncausedbypathogensisoneofthemostseriousLaboratoryofPlantPathologyaimstocreatenovelproblemsinagriculture.pest-controlthispurpose,wearestudyingmolecularmechanismsunderlyingplantresistancetopathogenswithaspecialfocusonsalicylicacid(SA),aphytohormonewhichregulatesplantdefenseresponse.ElucidationofmolecularmechanismsunderlyingSAbiosynthesisand/orsignalingcanleadtomolecularbreedingofapathogen-resistantplant,andtotheproductionofanovelpesticidewhichissaferthancurrentones.Keywords:Pest, Plant resistance,Salicylic acid, Pesticide, Molecular breeding.Keywords;?Mycorrhizalsymbiosis?Plantnutrition?Soilbiology?CarbonneutralConservationofsoilenvironmentisoneofthemostsignificantaspectsofsustainableagriculture.However,soildegradationandlossofsoilbiodiversityoccurallovertheworld.Inourlaboratory,wefocusonthecontributetoplantnutrition,andareinterestedinapplicationsofthesetoagriculturalmanagement.technologies.ForElucidationofmolecularmechanismsbywhichplantsproduceSAandresisttopathogensElucidationofmechanismsunderlyingenergy-savingstressresponsesofplantsMolecularbreedingofapathogen-resistantplantusingSAsynthesismechanismProductionofaSA-basednovelpesticidewhichissaferthancurrentonesproductionandMolecular mechanisms underlying mineral transfer in arbuscular mycorrhizal symbiosisMolecular genetics of arbuscular mycorrhizal symbiosis and root nodule symbiosis using model legume plantsMass production of arbuscular mycorrhizal fungi and their utilization for crop productionBiodiversity of soil organisms in conservationCarbon sequestration into soil via mycorrhizal symbiosisagro-environmental(Left)Structureofsalicylicacid(SA).(Right)Wildtype(A)isresistant,butSA-deficientmutant(D)issusceptibletopathogens(PlantCell11:1393–1404,1999).Trying to clarify SA synthesis mechanisms.Root nodule and mycorrhizal symbioses.Experiments on plant-microbe interactions.Salicylic acid
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