上海交通大学：《微生物学 Microbiology》课程教学资源（双语课件）Lecture 15.2 Microbial Ecology（Nutrient Cycles, Biodegradation, and Bioremediation）

上降充通大学 Shanghai Jiao Tong University 1896 1920 1987 2006 Lecture 15-2 Microbial Ecology: Nutrient Cycles,Biodegradation, and Bioremediation CHAPTER24 in18s6 BROCK BIOLOGY OF MICROORGANISMS O TONG Zhao Liping,Chen Feng School of Life Science and Biotechnology Shanghai Jiao Tong University

1896 1920 1987 2006 Lecture 15-2 Microbial Ecology: Nutrient Cycles, Biodegradation, and Bioremediation Zhao Liping, Chen Feng School of Life Science and Biotechnology Shanghai Jiao Tong University CHAPTER 24 in BROCK BIOLOGY OF MICROORGANISMS

充通大￥ 上i Shanghai Jiao Tong University 1896 1920 1987 2006 I.THE NUTRIENT CYCLES 7m。。。人风

1896 1920 1987 2006 I. THE NUTRIENT CYCLES

1.The Carbon Cycle C02 Human activities Respiration Land Animals and plants microorganisms Aquatic plants and C02 Aquatic phyto- animals plankton Biological pump. Fossil←-Humus Death and C02 fuels mineralization - Soil formation Earth's crust Rock formation 2012 Pearson Education,Inc The carbon and oxygen cycles are closely connected,as oxygenic photosynthesis both removes CO2 and produces O2 while respiratory processes both produce CO2 and remove O2.碳循环与氧循环密切相关

3 Microbiology, Shanghai Jiao Tong University 1. The Carbon Cycle The carbon and oxygen cycles are closely connected, as oxygenic photosynthesis both removes CO2 and produces O2 while respiratory processes both produce CO2 and remove O2.碳循环与氧循环密切相关

(CH20)n Organic matter Oxygenic photosynthesis Respiration Chemolithotrophy Methanotrophy Oxic CH4 CO2 Anoxic Methanogenesis Acetogenesis Syntroph Anaerobic assisted respiration Anoxygenic and photosynthesis fermentation Organic matter (CH2O)n 2012 Pearson Education,Inc

2.The Nitrogen Cycle氮循环 Nitrification NO2 Oxidation reactions Assimilation NH2 groups Assimilation of protein Nitrogen NO3 fixation are represented DRNA mmonification Oxic by yellow NH3 Anoxic arrows and NH2 groups Assimilation reductions NO2 of protein Ammonification Nitrogen in red. fixation NO, N20 Anammox N2 5 Denitrification 2012 Pearson Education,Inc

5 Microbiology, Shanghai Jiao Tong University 2. The Nitrogen Cycle氮循环 Oxidation reactions are represented by yellow arrows and reductions in red