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; Jiao, Fang; Zhang, Honggang; Yang, Min

doi:10.1016/j.watres.2022.118670

Cited by 6 publications

(1 citation statement)

References 51 publications

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“…Odor problems in source water caused by 2-methylisoborneol (MIB), a secondary metabolite of filamentous cyanobacteria in many reservoirs and lakes 1 , have been a common issue in the Northern Hemisphere, and have now been moving southward [2][3][4][5][6][7] . The major MIB producers include Oscillatoria 8-10 , Planktothrix 11 , Phormidium 10 , Pseudanabaena 12 , Lyngbya 13 and Planktothricoides 14 . It should be noted that MIB yield varies among different strains 11,[15][16][17] , and some strains of the known MIB-producing species are in some cases not even able to produce MIB 8,13,18 .…”

Section: Introductionmentioning

confidence: 99%

Light-dominated selection shaping filamentous cyanobacterial assemblages drives odor problem in a drinking water reservoir

Zhu

Andersen

et al. 2022

npj Clean Water

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Filamentous cyanobacteria have substantial niche overlap, and the causal mechanism behind their succession remains unclear. This has practical significance since several filamentous genera are the main producers of the musty odorant 2-methylisoborneol (MIB), which lead to odor problems in drinking water. This study investigates the relationships between two filamentous cyanobacteria, the MIB-producing genus Planktothrix and the non-MIB-producing genus Pseudanabaena, in a drinking water reservoir. We firstly identified their niche characteristics based on a monitoring dataset, combined this information with culture experiments and developed a niche-based model to clarify these processes. The results reveal that the optimal light requirements of Pseudanabaena (1.56 mol m−2 d−1) are lower than those of Planktothrix (3.67 mol m−2 d−1); their light niche differentiation led to a fundamental replacement of Planktothrix (2013) by Pseudanabaena (2015) along with MIB decreases in this reservoir during 2013 and 2015. This study suggests that light is a major driving force responsible for the succession between filamentous cyanobacteria, and that subtle niche differentiation may play an important role in shaping the filamentous cyanobacterial assemblages that drives the MIB odor problems in drinking water reservoirs.

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