很际徽生物和附生微生验Z根际微生物存在于植物根际（根系存在的范围）的缴生物由于受到植物根系分泌物（糖类、氢基酸和维生素等）和根系死亡脱落物（碳水化合物）的影响，植物根际的缴生物数量较跟际外高，但种类较单一， 且在不同的植物根际缴生物的神类会发生变化。根际缴生物的存在，对植物有益。主要表现在：改善了植物的营养条件；分泌植物生长刺激物质;分泌抗生素类物质；有时根际微生物对植物也会产生有害的影响。Z附生微生物：生活在植物体表面，借其外渗物质或分泌物质为营养的缴生物，如叶面缴生物、浆果表面缴生物
根际微生物和附生微生物 z 根际微生物：存在于植物根际（根系存在的范围）的微生物 由于受到植物根系分泌物（糖类、氨基酸和维生素等）和根 系死亡脱落物（碳水化合物）的影响，植物根际的微生物数 量较跟际外高，但种类较单一，且在不同的植物根际微生物 的种类会发生变化。根际微生物的存在，对植物有益。主要 表现在：改善了植物的营养条件；分泌植物生长刺激物质； 分泌抗生素类物质；有时根际微生物对植物也会产生有害的 影响。 z 附生微生物：生活在植物体表面，借其外渗物质或分泌物质 为营养的微生物，如叶面微生物、浆果表面微生物
生物修复Bioremediation
生物修复 Bioremediation
Bioremediation
Bioremediation
Bioremediation:use of microorganisms to eliminate or makeharmless pollutants in an environmentpollutants removedcan include- organicsolvents-toxicchemicals- hydrocarbonsoil spillintroduces specificorganisms to the polluted area many toxic substances are man-made/new to the environment (xenobiotics)no time for naturally occurring microbes to have evolved biochemical pathwaysfortheir degradationscientists are trying to develop new microbes for the degradation of environmentalpolluters
Bioremediation: use of microorganisms to eliminate or make harmless pollutants in an environment pollutants removed can include –organic solvents –toxic chemicals –hydrocarbons oil spill introduces specific organisms to the polluted area – many toxic substances are man-made/new to the environment (xenobiotics) – no time for naturally occurring microbes to have evolved biochemical pathways for their degradation scientists are trying to develop new microbes for the degradation of environmental polluters
Bioremediationscientists are also making use of organismsalready found in the environment- enhance their requirements for growth, such asnutrition or water availabilitybioremediationis-inexpensive-publicly accepted-non-polluting(ideally)11482AK-in situ treatment (at thesite)
Bioremediation scientists are also making use of organisms already found in the environment –enhance their requirements for growth, such as nutrition or water availability Bacteria in an oil spill bioremediation is –inexpensive –publicly accepted –non-polluting (ideally) –in situ treatment (at the site)