Spatial–temporal variations and diversity of the bacterioplankton communities in the coastal waters of Kuwait

Almutairi, Awatef

doi:10.1016/j.marpolbul.2015.09.016

Cited by 12 publications

(4 citation statements)

References 51 publications

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“…It was not difficult to explain why Proteobacteria dominated (>95%). As reported by many researchers, Proteobacteria, Bacteroidetes, Verrucomicrobia and Actinobacteria were found mostly in coastal areas or the phycosphere [11,[37][38]. However, only a minor fraction of sequences (<5%) identified in our study were Bacteroidetes and Verrucomicrobia, which have been shown to be associated with phytoplankton [39].…”

Section: Variation Of Phycosphere Bacterial Community Of P Donghaiensesupporting

confidence: 67%

Influence of Conditioned Media of Halomonas sp. DH-e on Phycosphere Bacterial Community Dynamics of <i>Prorocentrum donghaiense</i>

Bi¹,

Wang²,

Han³

et al. 2020

Pol. J. Environ. Stud.

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Prorocentrum donghaiense has become one of the major algae that cause phytoplankton blooms. A marine bacterium, Halomonas sp. DH-e with high algicidal activity to P. donghaiense was isolated in previous studies. However, the mechanism underlying the algicidal activity of DH-e was unknown. In the present study, the post-culture medium of DH-e was supplemented into the culture of P. donghaiense. Samples of algae cells and phycosphere bacteria were collected at different times. Illumina Miseq sequencing was used to evaluate bacterial community dynamics in the phycosphere of microalgae. Taxonomic analysis identified 3 phyla, including Proteobacteria, Bacteroidetes and Verrucomicrobia, with Proteobacteria dominating and accounting for more than 95% of all bacterial species. Alteromonadaceae increased gradually, while Rhodobacteraceae decreased during the culture with the post-culture medium. Principal component analysis suggested that bacterial community composition was similar during 0-12 h, but changed significantly at 24 h, 36 h and 48 h. Redundancy analysis revealed a close correlation between phycosphere bacterial community composition and pH, chlorophyll a and algae cell mass. In conclusion, the results suggested that algicidal activity of DH-e was mediated via the secretion of unidentified components in the post-culture medium, which induced variation of phycosphere bacterial community and subsequently contributed to the lysis of algae cells. Fig. 5. Redundancy analysis (RDA) ordination diagram showing the relationship among samples, bacteria and environmental factors. TN, total nitrogen; TP, total phosphorus; N/P, ratio of nitrogen to phosphorus; Chl a, chlorophyll a; DAC, the density of algae cells.

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Section: Variation Of Phycosphere Bacterial Community Of P Donghaiensesupporting

confidence: 67%

Influence of Conditioned Media of Halomonas sp. DH-e on Phycosphere Bacterial Community Dynamics of <i>Prorocentrum donghaiense</i>

Bi¹,

Wang²,

Han³

et al. 2020

Pol. J. Environ. Stud.

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“…By the use of 16S rRNA gene cloning and sequencing, the bacterioplankton diversity of oligotrophic marine environments is relatively well studied than coastal environments ( Zhou et al, 2011 ; Ortega-Retuerta et al, 2014 ; Hartmann et al, 2016 ; Milici et al, 2016 ; Dong et al, 2017 ). Bacterioplankton diversity and abundance patterns on a regional-scale and also for local sites under anthropogenic impact remains a hot topic and several reports are available ( Simonato et al, 2010 ; Niu et al, 2011 ; Peierls and Paerl, 2011 ; Zhou et al, 2011 ; Fodelianakis et al, 2014 ; Laas et al, 2014 ; Almutairi, 2015 ; Baltar et al, 2015 ; Meziti et al, 2015 ; Xiong et al, 2015 ; Jeffries et al, 2016 ). Overall, the available reports on bacterioplankton community composition at regional-scale or in local sites indicate diverse patterns and complex relationships between species composition and environmental factors.…”

Section: Introductionmentioning

confidence: 99%

Distinct Seasonal Patterns of Bacterioplankton Abundance and Dominance of Phyla α-Proteobacteria and Cyanobacteria in Qinhuangdao Coastal Waters Off the Bohai Sea

Sen

Zhou

et al. 2017

Front. Microbiol.

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Qinhuangdao coastal waters in northern China are heavily impacted by anthropogenic and natural activities, and we anticipate a direct influence of the impact on the bacterioplankton abundance and diversity inhabiting the adjacent coastal areas. To ascertain the anthropogenic influences, we first evaluated the seasonal abundance patterns and diversity of bacterioplankton in the coastal areas with varied levels of natural and anthropogenic activities and then analyzed the environmental factors which influenced the abundance patterns. Results indicated distinct patterns in bacterioplankton abundance across the warm and cold seasons in all stations. Total bacterial abundance in the stations ranged from 8.67 × 10 4 to 2.08 × 10 6 cells/mL and had significant (p < 0.01) positive correlation with total phosphorus (TP), which indicated TP as the key monitoring parameter for anthropogenic impact on nutrients cycling. Proteobacteria and Cyanobacteria were the most abundant phyla in the Qinhuangdao coastal waters. Redundancy analysis revealed significant (p < 0.01) influence of temperature, dissolved oxygen and chlorophyll a on the spatiotemporal abundance pattern of α-Proteobacteria and Cyanobacteria groups. Among the 19 identified bacterioplankton subgroups, α-Proteobacteria (phylum Proteobacteria) was the dominant one followed by Family II (phylum Cyanobacteria), representing 19.1-55.2% and 2.3-54.2% of total sequences, respectively. An inverse relationship (r = −0.82) was observed between the two dominant subgroups, α-Proteobacteria and Family II. A wide range of inverse Simpson index (10.2 to 105) revealed spatial heterogeneity of bacterioplankton diversity likely resulting from the varied anthropogenic and natural influences. Overall, our results suggested that seasonal variations impose substantial influence on shaping bacterioplankton abundance patterns. In addition, the predominance of only a few cosmopolitan species in the Qinhuangdao coastal wasters was probably an indication of their competitive advantage over other bacterioplankton groups in the degradation of anthropogenic inputs. The results provided an evidence of Bacterioplankton Abundance and Diversity Patterns their ecological significance in coastal waters impacted by seasonal inputs of the natural and anthropogenic matter. In conclusion, the findings anticipate future development of effective indicators of coastal health monitoring and subsequent management strategies to control the anthropogenic inputs in the Qinhuangdao coastal waters.

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“…However, the present study found that Bacteroidota was the most abundant bacterioplankton, likely due to the high concentrations of nutrients (e.g. PO 3− 4 ) that favor these organisms during bloom periods, as well as their ability to degrade complex proteins and mucopolysaccharides released by P. globosa (Cottrell and Kirchman, 2000;Janse et al, 2000;Brussaard et al, 2005;Lamy et al, 2009;Almutairi, 2015). Remarkable differences in bacterial community structure and diversity were also observed between the exponential and decline growth phases of the bloom, likely due to the increased proportion of recalcitrant polysaccharides (e.g., fucose-containing sulfated polysaccharides) derived from algal fragmentation, which favored specific bacteria such as Persicirhabdus sp.…”

Section: Figurementioning

confidence: 57%

Responses of bacterioplankton, particle- and colony-attached bacterial communities to Phaeocystis globosa blooms in Mirs Bay, China

Shi¹,

Qi²,

Han³

et al. 2023

Front. Mar. Sci.

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Microalgae blooms are a frequent occurrence in coastal waters worldwide. It is reasonable to assume that these blooms have various influences on bacterial communities, which in turn may affect the development and dissipation of the bloom. However, the bacterial community characteristics, particularly of attached bacteria, associated with microalgae blooms remain unclear. In this study, we investigated the community profiles of bacteria using high-throughput sequencing during a Phaeocystis globosa bloom in Mirs Bay, southern China, in January 2021. Bacteria living in three habitats, i.e., bacterioplankton, particle-attached bacteria, and colony-attached bacteria, were studied from the exponential growth phase to the decline growth phase of the bloom. Distinct variations in bacterial community composition existed among the three habitats. Bacteroidota, Proteobacteria, and Cyanobacteria were the dominant phyla of bacterioplankton, particle–attached bacteria, and colony-attached bacteria, respectively. Richness and diversity were significantly highest (p < 0.01) in particle-attached bacteria, followed by bacterioplankton, and lowest in colony-attached bacteria. The community diversities of bacterioplankton and particle-attached bacteria decreased significantly (p < 0.05) as the bloom shifted from the exponential to the decline phase. During the decline growth phase of the bloom, Bacteroidota and Verrucomicrobiota were the dominant remarkably abundant bacteria in the bacterioplankton community, whereas Verrucomicrobiota was dominant in the particle-attached bacteria community. No significant difference was observed in the colony-attached bacterial community between the exponential and decline phases of the P. globosa bloom owing to their complex network. The results of this study suggest that P. globose bloom has a profound impact on marine bacteria, particularly species that can decompose organic matter, which could play a crucial role in the dissipation of algal blooms.

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Spatial–temporal variations and diversity of the bacterioplankton communities in the coastal waters of Kuwait

Cited by 12 publications

References 51 publications

Influence of Conditioned Media of Halomonas sp. DH-e on Phycosphere Bacterial Community Dynamics of <i>Prorocentrum donghaiense</i>

Influence of Conditioned Media of Halomonas sp. DH-e on Phycosphere Bacterial Community Dynamics of <i>Prorocentrum donghaiense</i>

Distinct Seasonal Patterns of Bacterioplankton Abundance and Dominance of Phyla α-Proteobacteria and Cyanobacteria in Qinhuangdao Coastal Waters Off the Bohai Sea

Responses of bacterioplankton, particle- and colony-attached bacterial communities to Phaeocystis globosa blooms in Mirs Bay, China

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