Dissolved organic matter utilization and oxygen uptake in algal-bacterial microcosms.
Dissolved organic matter utilization and oxygen uptake in algal-bacterial microcosms.
复制标题
藻类-细菌微观世界中溶解有机物的利用和耗氧量。
DOI：
10.1139/m79-208
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发表时间：
1979
影响因子：
2.8
通讯作者：
A. J. Lingg
中科院分区：
文献类型：
--
作者：
D. Tison;A. J. Lingg
在封闭的实验室条件下，在非限制性的营养水平，鱼腥藻variabilis，Anacystis nidulans，小球藻pyrenoidosa，和Selanastrum capricornutum的生物量随着溶解性有机质（DOM）的增加而增加，由于细菌产生的二氧化碳（CO2）和（或）辅助因子。藻类光合作用产生的氧气（O2）足以提供细菌群落所需的氧气。细菌利用DOM的百分比，随后被纳入藻类生物量的变化与个别物种，表明个别藻类物种和细菌微生物群之间的关联变化。在自然条件下，细菌可以为藻类光合作用提供CO2和（或）辅助因子，而藻类光合作用又为细菌呼吸提供O2。如果有其他营养物质，水生环境中的这种互利关系可能导致水生藻类和附生藻类生物量的增加。
Under closed laboratory conditions, at non-limiting nutrient levels, the biomass of Anabaena variabilis, Anacystis nidulans, Chlorella pyrenoidosa, and Selanastrum capricornutum increased with increasing levels of dissolved organic matter (DOM) as a result of bacterially produced carbon dioxide (CO2) and (or) cofactors. Oxygen (O2) produced as a result of algal photosynthesis was sufficient to supply the najority of O2 required by the bacterial community. The percentage of DOM utilized by bacteria which was subsequently incorporated into algal biomass varied with individual species indicating that the association between individual algal species and the bacterial microbiota varied. Under natural conditions bacteria could provide CO2 and (or) cofactors for algal photosynthesis which in turn supplies O2 for bacterial respiration. This mutualistic association in aquatic environments could result in an increase in planktonic and epiphytic algal biomass if other nutrients are available.