AI Article Synopsis
- Researchers tested how small plant-eating mammals, like red voles, might enhance their nitrogen balance through nitrogen fixation.
- Two groups of red voles were fed different levels of protein and their nitrogen fixation rates were measured after three days.
- Nitrogen-fixing activity was found in all voles' digestive tracts, especially in those experiencing low dietary nitrogen, and researchers isolated a bacteria culture that can fix nitrogen from these voles.
Article Abstract
We have conducted a series of experiments in order to test hypothesis about the possible use of nitrogen fixation by small phytophagous mammals as a way to supplement their nitrogen balance. Two groups of red voles Clethrionomys rutilis were kept on rations with different protein nitrogen content. Three days later, the rate of nitrogen fixation was determined in different regions of the digestive tract. Nitrogen-fixing activity has been detected in the GI tract of all studied voles, specifically in those regions, where symbiocenoses were present; it was particularly high in animals of the experimental group under the conditions of dietary nitrogen limitation. A mixed culture of bacteria capable of nitrogen fixation has been isolated from the digestive tract of red voles.
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