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Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir
Lu, Jinping; Su, Ming; Su, Yuliang; Wu, Bin; Cao, Tengxin; Fang, Jiao; Yu, Jianwei; Zhang, Honggang; Yang, Min
2022-07-15
Source PublicationWATER RESEARCH
ISSN0043-1354
Volume220Issue:0Pages:118670
AbstractIn comparison with the middle-and high-latitude regions, the low-latitude regions are less associated with the occurrence of 2-methylisoborneol (MIB) episodes, since most of the previously identified MIB producers favor moderate/low light/temperature conditions. Here, we report a serious MIB outbreak over the period from Jul. 2018 to Jun. 2019 in a low-latitude reservoir with a mean annual water temperature of 25.6 C. The MIB episode lasted for a long period, from Jul. 2018 to Jan. 2019, and Planktothricoides raciborskii was confirmed to be the main MIB producer. The growth characteristics of P. raciborskii were explored through both laboratory culturing and on-site verification experiments. The results indicated that this strain was not nutrient-sensitive at TN > 800 mu g L-1 and TP > 10 mu g L-1, but favored moderate light intensity (54 mu mol photon m- 2.s- 1) and high temperature (30 C). The two bloom-forming genera, Limnothrix and Aphanizomenon, favoring lower temperature and similar or relatively higher light intensity, showed much greater proliferation, about 13 folds (Limnothrix) and 58 folds (Aphanizomenon), from Dec. to Jun.; by contrast, the high water temperature (29.9 & PLUSMN; 2.8 C) and light intensity (189.1 & PLUSMN; 87.6 mu mol photon m- 2.s- 1) from Jul. to Nov. were not favorable to Limnothrix or Aphanizomenon, which might have created an opportunity for the growth of MIB-producing P. raciborskii. In addition, we also found that high temperature could promote the release of MIB from P. raciborskii cells, therefore exerting increased pressure on drinking water treatment processes.
Department环境水质学国家重点实验室 ; 环境水质学国家重点实验室
KeywordCYANOBACTERIAL BLOOMS LIMNOTHRIX-REDEKEI PSEUDANABAENA SP MUSTY ODOR GEOSMIN WATER LAKE PHYTOPLANKTON TEMPERATURE LIGHT
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47688
Collection环境水质学国家重点实验室
Corresponding AuthorSu, Ming
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
2.Zhuhai Water Environm Holdings Grp Ltd, Zhuhai 519020, Peoples R China
3.Changan Univ, Sch Civil Engn, Xian 710054, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.POB 2871, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Lu, Jinping,Su, Ming,Su, Yuliang,et al. Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir[J]. WATER RESEARCH,2022,220(0):118670.
APA Lu, Jinping.,Su, Ming.,Su, Yuliang.,Wu, Bin.,Cao, Tengxin.,...&Yang, Min.(2022).Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir.WATER RESEARCH,220(0),118670.
MLA Lu, Jinping,et al."Driving forces for the growth of MIB-producing Planktothricoides raciborskii in a low-latitude reservoir".WATER RESEARCH 220.0(2022):118670.
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