水生生物学报2018，Vol.42Issue(1)：190-195,6.DOI:10.7541/2018.024
铜绿微囊藻与小球藻对低温和黑暗的响应与恢复
RESPONSES AND RESTORATION OF THE WATERBLOOM-FORMING CYANOBACTERIUM MICOCYSTIS AND A GREEN ALGA CHLORELLA UNDER DARKNESS AND LOW TEMPERATURE
摘要
Abstract
The growth, pigment content, maximum variable fluorescence (Fv/Fm), malondialdehyde (MDA) content, and antioxidant enzyme activity were investigated in Microcystis aeruginosa PCC 7806 and a green alga, Chlorella sp. FACHB-31, which were cultured under darkness and at a low-temperature in the present study. After a 30-d incubation under darkness and at a low temperature, chlorophyll a showed a significant decrease and the carotenoid unit content significantly increased in Microcystis and Chlorella. The MDA content and catalase (CAT) activity exhibited signifi-cant changes in Microcystis, while MDA content and CAT activity in Chlorella did not change markedly. Additionally, the survival rate of Microcystis was 54.6％, which is higher than that of Chlorella (31.3％). When returning to normal temperature and illumination, both algae showed a rapid growth. These results suggest that Microcystis survived by re-ducing its metabolic activity, but that Chlorella maintained a stable high metabolic activity under dark, low tempera-ture winter conditions.关键词
低温/黑暗/响应/铜绿微囊藻/小球藻Key words
Low temperature/Darkness/Response/Microcystis aeruginosa/Chlorella sp.引用本文复制引用
岳红,李巧玉,喻燚,张红波,董聪聪,施军琼,吴忠兴..铜绿微囊藻与小球藻对低温和黑暗的响应与恢复[J].水生生物学报,2018,42(1):190-195,6.基金项目
中央高校基本业务费专项资金 (XDJK2017B010和XDJK2016C111) （XDJK2017B010和XDJK2016C111）
西南大学博士基金(SWU110065)资助 [Supported by the Fundamental Research Funds for the Central Universities (XDJK2017B010, XDJK2016C111) （SWU110065）
Doctoral Found Project of China SWU (SWU110065)] （SWU110065）
