Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure
<p align="left">This study aimed to investigate the mechanisms involved in <em>Microcystis aeruginosa</em> (<em>M. aeruginosa</em>) compensatory growth after moderate high-temperature stress. In the experiment, <em>M. aeruginosa</em> were cultured...
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doaj-c9dd1880213a484ba9098c1843de6ee22020-11-25T03:19:57ZengPAGEPress PublicationsJournal of Limnology1129-57671723-86332015-04-0174310.4081/jlimnol.2015.1164740Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposureWei Han0Yuanshu Jing1Ting Li2Nanjing University of Information Science &TechnologyNanjing University of Information Science &TechnologyNanjing University of Information Science &Technology<p align="left">This study aimed to investigate the mechanisms involved in <em>Microcystis aeruginosa</em> (<em>M. aeruginosa</em>) compensatory growth after moderate high-temperature stress. In the experiment, <em>M. aeruginosa</em> were cultured for 3, 6, and 12 d at 35°C before being transferred to normal conditions (25°C), and then cultured for 30 days for recovery. The algae that were cultured constantly at 25°C were set as control. The results showed that the growth of <em>M. aeruginosa</em> was inhibited significantly by the moderate high-temperature stress. During the recovery phase, the <em>M. aeruginosa</em> cultured at 35°C for 3, 6, and 12 days exhibited under-compensation, over-compensation, and equal-compensation, respectively. To cope with moderate high-temperature stress, <em>M. aeruginosa</em> implement various mechanisms, including increasing antioxidant enzyme activities and chlorophyll a content; adjusting compatible solutes (soluble protein and sugar). The <em>M. aeruginosa</em> cultured at 35°C for 6 days has higher antioxidant enzyme activities, relatively low malondialdehyde content, and higher soluble sugar content during the recovery phase; therefore, <em>M. aeruginosa</em> cultured at 35°C for 6 days exhibited over-compensation growth. Grey correlation analysis revealed that the increase of chlorophyll a, soluble sugar, and superoxide dismutase activity play key roles in the compensatory growth of <em>M. aeruginosa</em>.</p>http://www.jlimnol.it/index.php/jlimnol/article/view/1164Moderate high-temperature stressMicrocystis aeruginosaover-compensatory growthantioxidant enzymes. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wei Han Yuanshu Jing Ting Li |
spellingShingle |
Wei Han Yuanshu Jing Ting Li Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure Journal of Limnology Moderate high-temperature stress Microcystis aeruginosa over-compensatory growth antioxidant enzymes. |
author_facet |
Wei Han Yuanshu Jing Ting Li |
author_sort |
Wei Han |
title |
Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure |
title_short |
Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure |
title_full |
Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure |
title_fullStr |
Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure |
title_full_unstemmed |
Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure |
title_sort |
compensatory growth in microcystis aeruginosa after moderate high-temperature exposure |
publisher |
PAGEPress Publications |
series |
Journal of Limnology |
issn |
1129-5767 1723-8633 |
publishDate |
2015-04-01 |
description |
<p align="left">This study aimed to investigate the mechanisms involved in <em>Microcystis aeruginosa</em> (<em>M. aeruginosa</em>) compensatory growth after moderate high-temperature stress. In the experiment, <em>M. aeruginosa</em> were cultured for 3, 6, and 12 d at 35°C before being transferred to normal conditions (25°C), and then cultured for 30 days for recovery. The algae that were cultured constantly at 25°C were set as control. The results showed that the growth of <em>M. aeruginosa</em> was inhibited significantly by the moderate high-temperature stress. During the recovery phase, the <em>M. aeruginosa</em> cultured at 35°C for 3, 6, and 12 days exhibited under-compensation, over-compensation, and equal-compensation, respectively. To cope with moderate high-temperature stress, <em>M. aeruginosa</em> implement various mechanisms, including increasing antioxidant enzyme activities and chlorophyll a content; adjusting compatible solutes (soluble protein and sugar). The <em>M. aeruginosa</em> cultured at 35°C for 6 days has higher antioxidant enzyme activities, relatively low malondialdehyde content, and higher soluble sugar content during the recovery phase; therefore, <em>M. aeruginosa</em> cultured at 35°C for 6 days exhibited over-compensation growth. Grey correlation analysis revealed that the increase of chlorophyll a, soluble sugar, and superoxide dismutase activity play key roles in the compensatory growth of <em>M. aeruginosa</em>.</p> |
topic |
Moderate high-temperature stress Microcystis aeruginosa over-compensatory growth antioxidant enzymes. |
url |
http://www.jlimnol.it/index.php/jlimnol/article/view/1164 |
work_keys_str_mv |
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