水生生物学报2016，Vol.40Issue(6)：1221-1226,6.DOI:10.7541/2016.159
CO2浓度变化对拟柱胞藻生长与光合作用的影响
EFFECTS OF CHANGED CO2 CONCENTRATION ON GROWTH AND PHOTOSYNTHESIS OF CYLINDROSPERMOPSIS RACIBORSKII
摘要
Abstract
To explore the influence of elevated atmospheric CO2 concentration on algae blooms, we studied effects of elevated CO2 concentration on the growth, physiological and photosynthesis of a bloom-forming cyanobacterium,Cy-lindrospermopsis raciborskii. The results showed that elevated CO2 concentration significantly increased the biomass, the maximum photosynthetic rate and photosynthetic efficiency ofC. raciborskii. The concentration of CO2 at 700 mg/L did not impact dark respiration rate and light saturation point ofC. raciborskii but had significant effect at 1000 mg/L. The increased CO2 reduced the affinity of algal cell photosynthesis to inorganic carbon and, the extracellular car-bonic anhydrase activity. These results suggest that the increase in atmospheric CO2 concentration might be beneficial to growth and photosynthesis ofC. raciborskii, which may increase the risk of blooms.关键词
拟柱胞藻/CO2/光合作用/无机碳/胞外碳酸酐酶Key words
Cylindrospermopsis raciborskii/CO2/Photosynthesis/Inorganic carbon/Extracellular carbonic anhydrase分类
农业科技引用本文复制引用
许金铸,白芳,杨燕君,吴忠兴..CO2浓度变化对拟柱胞藻生长与光合作用的影响[J].水生生物学报,2016,40(6):1221-1226,6.基金项目
国家自然科学基金(31170372) （31170372）
西南大学博士基金(SWU110065)资助@@@@Supported by the National Natural Science Foundation of China (31170372) （SWU110065）
the Doctoral Found Project of China (SWU SWU110065) （SWU SWU110065）
