Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
Investigation on detection of limiting nutrient in BG-11 media for wild type Anabaena strain.
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number SD14-038, ASABE/CSBE North Central Intersectional Meeting. (doi: 10.13031/sd14038) @2014
Authors: Jayasurya Vijayakumar, Gary A Anderson
Keywords: Anabaena 7120, BG-11 media, Limiting nutrient, Spectrophotometer, Nitrate, Phosphorus, Sulfate.
Different nutrients are supplied in different quantities based on the requirement of the cells. The limiting nutrient is the one which is completely used up by the cells first thereby limiting cell growth and cell division. The wild strain Anabaena 7120 is grown in BG-11 media. Three major nutrients nitrate, phosphorus and sulfate are measured in the media to determine the decrease in quantity of the nutrient, the change in quantity is assumed to be taken up by the cell. These nutrients are quantified using a spectrophotometer. The relationship between biomass dry weight and optical density was also obtained.
The results show that the nutrient nitrate was consumed by the cell up to certain level and then it increased in the media. Sulfate concentration remained the same and the amount of phosphorus gradually decreased, to zero. Thus the nutrient phosphorus is the limiting nutrient for the strain Anabaena 7120 wild type grown in BG-11 media.