Scholarlink

<p>The global rise in CO<sub>2</sub> concentration is having a profound impact on the structure and function of aquatic ecosystems. However, little information is available on the responses of odor-producing cyanobacteria to the increase in CO<sub>2</sub> concentration. In this study, the effects of different CO<sub>2</sub> concentrations on 2-methylisoborneol (MIB)-producing <i>Pseudanabaena</i> and non-2-MIB-producing <i>Pseudanabaena</i> under monoculture and co-culture conditions were investigated. Results show that the specific growth rate of <i>Pseudanabaena</i> gradually increased with the rise in CO<sub>2</sub> concentration, and for the 2-MIB-producing strain, this increase was significantly higher than the non-2-MIB-producing strain. Under co-culture conditions, the proportion of non-2-MIB-producing <i>Pseudanabaena</i> was significantly higher than that of 2-MIB-producing <i>Pseudanabaena</i>, suggesting a superior competitive ability of non-2-MIB-producing <i>Pseudanabaena</i> over 2-MIB-producing <i>Pseudanabaena</i>. Under monoculture conditions, the total 2-MIB production at the 300-µg/g CO<sub>2</sub> concentration was significantly higher than that at 600- and 1 200-µg/g CO<sub>2</sub> concentrations. The 2-MIB concentration produced by <i>Pseudanabaena</i> decreased with the increasing in CO<sub>2</sub> concentration. Therefore, we believe that with the future increase in CO<sub>2</sub> concentration, 2-MIB concentration would be decreased and so would the risk of 2-MIB outbreaks.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Increase in CO2 concentration reduces the competitiveness of 2-methylisoborneol-producing cyanobacteria: evidence from Pseudanabaena

  • 期刊论文

  • 发表日期：

    2025年3月6日

查看全文
  • Pengfei Qiu,
  • Wujuan Mi,
  • Gaofei Song,
  • Fengfeng Cheng,
  • Yonghong Bi

摘要

The global rise in CO2 concentration is having a profound impact on the structure and function of aquatic ecosystems. However, little information is available on the responses of odor-producing cyanobacteria to the increase in CO2 concentration. In this study, the effects of different CO2 concentrations on 2-methylisoborneol (MIB)-producing Pseudanabaena and non-2-MIB-producing Pseudanabaena under monoculture and co-culture conditions were investigated. Results show that the specific growth rate of Pseudanabaena gradually increased with the rise in CO2 concentration, and for the 2-MIB-producing strain, this increase was significantly higher than the non-2-MIB-producing strain. Under co-culture conditions, the proportion of non-2-MIB-producing Pseudanabaena was significantly higher than that of 2-MIB-producing Pseudanabaena, suggesting a superior competitive ability of non-2-MIB-producing Pseudanabaena over 2-MIB-producing Pseudanabaena. Under monoculture conditions, the total 2-MIB production at the 300-µg/g CO2 concentration was significantly higher than that at 600- and 1 200-µg/g CO2 concentrations. The 2-MIB concentration produced by Pseudanabaena decreased with the increasing in CO2 concentration. Therefore, we believe that with the future increase in CO2 concentration, 2-MIB concentration would be decreased and so would the risk of 2-MIB outbreaks.