DATASET FOR MICROCYSTIN REMOVAL BY MICROBIAL COMMUNITIES FROM A COASTAL LAGOON: INFLUENCE OF ABIOTIC FACTORS, BACTERIOPLANKTON COMPOSITION AND ESTIMATED FUNCTIONS
Description
Toxic cyanobacterial blooms present a substantial risk to public health due to the production of secondary metabolites, notably microcystins (MCs). Microcystin-LR (MC-LR) is the most prevalent and toxic variant in freshwater. MCs resist conventional water treatment methods, persistently impacting water quality. This study focused on an oligohaline shallow lagoon historically affected by MC-producing cyanobacteria, aiming to identify bacteria capable of degrading MC and investigating the influence of environmental factors on this process. While isolated strains did not exhibit MC degradation, microbial assemblages directly sourced from lagoon water removed MC-LR within seven days at 25 ºC and pH 8.0. The associated bacterial community demonstrated an increased abundance of bacterial taxa assigned to Methylophilales, and also Rhodospirillales and Rhodocyclales to a lesser extent. However, elevated temperatures (45 ºC) and acidification (pH 5.0 and 3.0) hindered MC-LR removal, indicating that extreme environmental changes could contribute to prolonged MC persistence in the water column. This study highlights the importance of considering environmental conditions in order to develop strategies to mitigate cyanotoxin contamination in aquatic ecosystems. This Dataset includes all raw results presented in the original manuscript for sharing with the readers.
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Funding
CAPES/NUFFIC - Bilateral Cooperation Brazil-Netherlands
045/12
PIBIC/UFRJ
Undergraduate Studentship
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
PhD fellowship (PDR10)