页数:34页文件大小:4.62 MB来源: 微生物学ppt课件
本课件为英文版微生物生态学章节,介绍水生、土壤与大气环境中微生物的分布特点,说明微生物与动植物之间的互生、共生与拮抗关系,并阐述其在碳、氮、硫循环与环境保护中的作用。
Chapter 9Microbial Ecology
Microbiological Ecology:Microbial ecology is thestudy of the behavior andactivities of microorganismsin their natural environments.
9.1 Microorganisms in NatureEcosystem9.1.1 MicroorganismsinAquaticEnvironment1. Freshwatermicroorganism(1)Oligotrophic hydromicroorganism(2)Copiotrophic hydromicroorganism2. Marine microorganism
9.1.2 Microorganisms inatmosphereTable 9-1 Bacterium quantity in 1M3air in different environmentsEnvironmentNumbersbarn1-2×106dorm20000city street5000Town park200Air up the ocean1-2north pole(northlatitude80°)0(From ZhouDeqin,<Microbiology Course> ,Edition One,Page284)
9.1.3 Microorganisms in SoilEnvironmentBacterium quantities have a general decupledegression law per gram soil:bacteria(~108)>actinomyces(~107)>mildew(~106)>microzyne(~105)>algae(~104)>protozoan(~103)
9.1.4 Microorganism Growninside and outside Organisms1、Normal Microbiota of the HumansBody and Animals.2、The Microbiota of the Plants(1)RhizosphereMicroorganisms(2)adnascent Microorganisms(3)endogenesis Microorganisms
9.2 The Relationships ofMicrobials and also with otherOrganisms1.Neutralism2. Mutualism(1) Mutualismbetween microorganisms(2) Mutualismbetween propagation and microorganisms3. Symbiosis(1)Symbiosisbetween microorganisms(2)Plant-microorganismsymbiosis(3)Animal-microorganismsymbiosis
AceticacidLightFigure9-2MutualismmechanismbetweenDesulfuromonas.acetoxidansandChlorobiumsp.Desulfuromonas.acetoxidansCell fundusChlorobium sp.CellfundusSH2SCO2CO2
Figure 9-3 Diagrammatize transverse sectionabout plant`s Endomycorrhizaeand Ectomycorrhizae
spitFibrous fodderNature bacteriumQuickly reproduce in the rumenCO2,CH4,H2…A great deal thalli was digested by the abomasumexcrementmilk,beefOrganicacid,ethanolAbsorbbyrumenGasfrommouthFigure9-4microbialmetabolizerelationinmilchcow’srumen
4. Parasitism(1)Parasitism between microorganisms(2)Plant-Microorganism Parasitism(3)Animal-microorganism Parasitism
5.AntagonismABFigure 9-5 Antagonistic between Microbes(Figure A :Antagonistic bacillus antibiotic production and inhibition of growth of Verticillium dahliae;FigureB: Antagonistic, Actinomycete antibiotic production and inhibition of growth of Fusarium oxysporum f.sp.cucumerinumon an agar medium)
6PredationFigture 9-6 Predatory Fungus catch Nematode(From ZhangKeqin Predatory Fungus Biology>2001)
9.3 Microbial’s effect inbiogeochemical cycles1. Carbon cycleCO2+H2OFossilfuelRespiratonO2+“CH2O”Alcohol,OrganicAcid,H2+CO2CH4Photosyn-thesisZymosisAerobicAnaerobicFigure9-7Carbon、Hydrogen、Oxygencycleinthenature
2. NitrogencycleOrgaismnitrogenNH4+NO3-NO2-NON2ONH2OHNH4+②nitrificationNitrateassimil-ation⑤AmmoniumassimilationbiologyNitrogenfixation⑥DissimilationNitratereduction⑧Anammoxprocess②Nitrification④AmmonifyingFigture9-8TheBasicNitrogenCycle(Redarrows:Interactionbetweenmicroorganismsandplants;Yellowarrows:ImportanttachesinNitrogenFixation.)assimilationAtmosphereN2
4.Phosphorus CycleInfusibilityPhosphatePhosphorous Acid or Dissolubility PhosphateOrganicPhosphorusCombinedwithelectropositiveinsoilActionofacidproductmicroorganismsorproductionofPhosphorusPlantsandMicroorganism’sAssimilationMicrobialdecomposeFigure9-10MicroorganismsinPhosphorusCycle
5. Iron CycleAerobicAnaerobicFe2+Fe3+Fe3O4Fe3O4Ferribacteriumlimneticum,Geobactermetallireducens,Geobactersulfurreducens,Geovibrioferrireducens,DesulfuromonasacetoxidansAnaerobicpurplephootrophicbacteriaAquaspirillummagnetotacticumUnknownchemicalFigure9-11ThebasicIroncycleAerobic,Thiobacillu.Thermophilic,Sulfol-obus
9. 4 Microorganisms and theEnvironment Pollution1. Pollution caused by microorganisms(1)Atmosphere Pollution(2)Aquatic Environment Pollution(3)Terrestrial Environment Pollution(4)Eutrophication (nutrientenrichment)(5)Pollution from microbe’ metabolizeoutcome
Table 9-2Pathogen microbes Spread by Atmosphere andthe Disease Caused by ThemPathogen microbeName of diseaseBacteriaMycobacterium tuberculosisStreptococcus pneumoniae Staphylococcus spStreptococcus pyogenesNeisseria meningitidisCorynebacterium diphtheriaeBordetella pertussisYersinia pestisBacillus anthracisLegionella pneumophilaBacteria DiseasePhthisicStreptococcal pneumoniaStaphylococcal respiratory infectionsStreptococcal sore throat Scarlet feverEpidemiccerebrospinal meningitisDiphtheriaChincoughPlaguePulmonary AnthraxLegionnaires’ diseaseVirusInfluenza virusPicornaviridae Parotitis virus Measles virusVariola virusChicken poxvirusMeaslesAdenovirusVirosisInfluenza,FluCommon coldMumpsMeaslesSmallpoxCChicken poxMeaslesPharyngitis\virosis pneumonia..Other Pathogen microbeCoxiella burnetiiMycoplasma preumoniaeActinomadura asteroidesHistoplasma capsulatumCryptococcus neoformansMicropolyspora faeniOther diseasesQ hotMycoplasmal pneumoniaN.asteroides’ diseaseHistoplasmosisCryptococcosisHaystacks
Table 9-3Pathogen Microbes Enter into Water ThroughDejection、SewageBacteriaVirusothersSalmonellaShigellaEnteropathogenicE.coliProteusKlebsiellaFrancisellatularensisPseudomonasserratiaY.enterocoliticas
Table 9-4 Several pathogenic organisms’surviving time in the soilPathogenic organismsTimeEnterococcus faecalisSalmonellaShigellaTubercle bacillusBartonellaHenselaeLeptospiraBacillus anthracisEntamoeba histoluytic26~77Days15~280Days,more than280Days1~3 Months
Table 9-5 Comparation of Microbial in Oligotrophic and Eutrophic LakesItermEutrophic LakesOligotrophicn lakesNumberKindsDistributionMove at dayandnightMassivebloomsMain algaAbundanceLessMostly on the surface ofwaterLimitRegulantyCyanophyceaeChroococcaceaeMicrocystisMicrocystisaerugrinosa
2. Indicater Organisms as anindex of possible contaminationCurrent Drinking Water Standards in China:No morethan 100 bacteriums in single1mltap water,and nomore than3coliforms in single1Lwater.When water is polluted by fecal contamination,bacterias and coliforms will increase. Commonly,Bacterias in1mlwater:10-
Figure 9-12 Metallograph of the Floc formed by the zoogloea bacilli and the filamentous bacilliin Activated Sludge [From Lansing M.Prescott et al Microbiology(fifth edition)]
Dense waste waterBOD10000ml/LUnfreeze treatmentAdjust pHPSBtreatmentNo.1Refluence Cultivate troughBacterium troughNo.2No.3No.4Deposition poolOxidationpoolThalli utilizationRare wasteBOD500ml/LauoundFigure 9-13 Waste Water Treatment with Photosynthetic Bacteria
InputwaterChlorinationvesselsActivatedsludgevesselsPrimaryclarifiersFinalclarifiersSecondaryclarifiersOutputwaterFigure9-14AnAerialViewofaModernConventionalSewageTreatmentPlant.
Table9-7 Major steps in Primary, Secondary,and Tertiary Treatment of WastesTreatingstepprocessesPrimaryRemoval of insoluble particulate materials bysetting, screening, addition of alum andother coagulation agents, and otherphysical proceduresSecondaryBioloigical removal of dissolved organicmatter
(2)Operation and Applications indealing with Exhaust gas byMicroorganismsMicroorganism filter method:A method using solid grain ,which containmicroorganisms to absorb infectant in theair ,and then the microorganisms transfer themintoinnocuitysubstance. The common solidgrain are soil and compost, some are biology
(3):Microorganisms used intreating solid castoffs, Methodsand Applications1、Aerobiccompost2、Anaerobiccompost
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