Abstract:Characteristics of Geosmin produced by Anabaena sp. under phosphorus-limited and nitrogen-limited conditions were investigated in batch cultivation and determined using SPME-GC Mass. Anabaena sp. grew well and the growth rate was not influenced by nitrogen limitation. However, its growth was restrained by phosphorus limitation. Heterocyst was produced and its percentage account for 3.5%~4.4% of total cells under nitrogen-limited condition, whereas heterocyst was not produced under phosphorus-limited condition. The geosmin content in cell declined quickly in the first 20d and then kept almost constant. The geosmin content in the late phase was 3.7×10-5ng/cell under nitrogen-limited condition and was a little higher under phosphorus-limited condition (3.2×10-5ng/cell). Chl a concentration under the nitrogen-limited condition was much higher than that under phosphorus-limited condition. The ratio of geosmin content to Chl a content (geosmin/Chl a) under the phosphorus-limited condition (2.3×10-2) was higher than that under nitrogen-limited condition (1.5×10-2).
贾晓燕, 刘聪, 储昭升, 庞燕, 胡小贞. 氮磷限制条件下螺旋鱼腥藻产生土嗅素特征研究[J]. 中国环境科学, 2014, 34(4): 1026-1030.
JIA Xiao-Yan, LIU Cong, CHU Zhao-Sheng, PANG Yan, HU Xiao-Zhen. Geosmin production characteristics by Anabaena sp. in nitrogen-limited and phosphorus-limited conditions. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(4): 1026-1030.