Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir

MIB persists long
Warm reservoirs bloom anew
Odor challenges.
2-methylisoborneol (MIB)
Planktothricoides raciborskii
Low-latitude reservoirs
Cyanobacteria
Drinking water quality

WR2022: Jinping Lu, Ming Su, et. al. Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir. Water Research 2022;220:118670. 10.1016/j.watres.2022.118670.

作者
单位

陆 金平

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

University of Chinese Academy of Sciences

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

University of Chinese Academy of Sciences

苏 宇亮

Zhuhai Water Environment Holdings Group Ltd.

吴 斌

Zhuhai Water Environment Holdings Group Ltd.

曹 腾心

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

University of Chinese Academy of Sciences

方 姣

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

于 建伟

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

University of Chinese Academy of Sciences

张 洪刚

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

University of Chinese Academy of Sciences

发布于

2022年07月15日

Doi

重要链接

摘要

与中高纬度地区相比,低纬度地区与2-甲基异莰醇(MIB)事件的发生关系较小,因为大多数已知的MIB生产者更偏好适中的光照和温度条件。本文报告了2018年7月到2019年6月期间在一个低纬度水库发生的严重MIB爆发,该水库年均水温为25.6°C。MIB事件持续时间较长,从2018年7月持续到2019年1月,Planktothricoides raciborskii被确认是主要的MIB生产者。通过实验室培养和现场验证实验,我们探讨了P. raciborskii的生长特性。结果表明,当总氮(TN)> 800 μg L-1,磷(TP)> 10 μg L-1时,该菌株对营养物质不敏感,但偏好适中的光强(54 μmol光子/m^2·s)和高温(30°C)。而两种以低温为主的蓝藻属、Limnothrix和* Aphanizomenon,则偏好较低温度和类似或相对较高的光照强度,在12月到6月之间,繁殖量分别增长了约13倍(Limnothrix)和58倍(Aphanizomenon);相反,7月到11月的高水温(29.9 ± 2.8°C)和光照强度(189.1 ± 87.6 μmol光子/m^2·s)对LimnothrixAphanizomenon不利,这可能为MIB生产者P. raciborskii的生长提供了机会。此外,我们还发现,高温能促进P. raciborskii*细胞释放MIB,从而对饮用水处理过程带来更大的压力。

图摘要

引用

加入 Zotero

@Article{lu2022driving,
    title       = {Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir},
    author      = {Jinping Lu and Ming Su and Yuliang Su and Bin Wu and Tengxin Cao and Jiao Fang and Jianwei Yu and Honggang Zhang and Min Yang},
    year        = 2022,
    journal     = {Water Research},
    volume      = 220,
    pages       = 118670,
    url         = {https://www.sciencedirect.com/science/article/pii/S0043135422002436},
    issn        = {0043-1354},
    doi         = {10.1016/j.watres.2022.118670}
}