Kolber Z S, Van Dover C L, Niederman R A, Falkowski P G
Environmental Biophysics and Molecular Ecology Program, Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, New Jersey 08901-8521, USA.
Nature. 2000 Sep 14;407(6801):177-9. doi: 10.1038/35025044.
The oxidation of the global ocean by cyanobacterial oxygenic photosynthesis, about 2,100 Myr ago, is presumed to have limited anoxygenic bacterial photosynthesis to oceanic regions that are both anoxic and illuminated. The discovery of oxygen-requiring photosynthetic bacteria about 20 years ago changed this notion, indicating that anoxygenic bacterial photosynthesis could persist under oxidizing conditions. However, the distribution of aerobic photosynthetic bacteria in the world oceans, their photosynthetic competence and their relationship to oxygenic photoautotrophs on global scales are unknown. Here we report the first biophysical evidence demonstrating that aerobic bacterial photosynthesis is widespread in tropical surface waters of the eastern Pacific Ocean and in temperate coastal waters of the northwestern Atlantic. Our results indicate that these organisms account for 2-5% of the photosynthetic electron transport in the upper ocean.
约21亿年前，蓝藻的产氧光合作用使全球海洋发生氧化，据推测这使得无氧光合细菌的光合作用局限于既缺氧又有光照的海洋区域。约20年前需氧光合细菌的发现改变了这一观念，表明无氧光合细菌的光合作用在氧化条件下仍可存续。然而，全球范围内需氧光合细菌在世界海洋中的分布、它们的光合能力以及它们与产氧光合自养生物的关系尚不清楚。在此，我们报告首个生物物理学证据，证明需氧细菌光合作用在东太平洋热带表层水域和西北大西洋温带沿海水域广泛存在。我们的结果表明，这些生物在上层海洋光合电子传递中占2% - 5%。
