Growth-promoting effects of a bacterium on raphidophytes and other phytoplankton

Liu, Jiqing; Lewitus, Alan J.; Brown, Patrick H.; Wilde, Susan B.

doi:10.1016/j.hal.2007.04.009

Cited by 32 publications

(23 citation statements)

References 35 publications

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“…Therefore, further investigation on the nitrogen-fixing capability and the affinity for urea and short-chain amides of bacteria associated with M aeruginosa colonies is warranted. Bacteria may promote algal growth indirectly through re-mineralization of excreted dissolved organic matter, or directly through releasing growth factors such as vitamins (Liu et al 2008). Bacteria may inhibit algal growth due to some allelopathic mechanism.…”

Section: Resultsmentioning

confidence: 99%

Molecular Identification of the Colony-Associated Cultivable Bacteria of the CyanobacteriumMicrocystis aeruginosaand Their Effects on Algal Growth

Shi¹,

Cai²,

Li³

et al. 2009

Journal of Freshwater Ecology

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Section: Resultsmentioning

confidence: 99%

Molecular Identification of the Colony-Associated Cultivable Bacteria of the CyanobacteriumMicrocystis aeruginosaand Their Effects on Algal Growth

Shi¹,

Cai²,

Li³

et al. 2009

Journal of Freshwater Ecology

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“…A large number of phytoplankton substrates, particularly dissolved organic carbon, are absorbed by bacteria for their growth (Kirchman et al ., ; Amon and Benner, ), and some bacterial species, such as Flavobacteriia , Alphaproteobacteria and Gammaproteobacteria can proliferate rapidly during a phytoplankton bloom (Larsen et al ., ; Niu et al ., ; Tada et al ., ; Teeling et al ., ; Tan et al ., ; Needham and Fuhrman, ). Conversely, bacteria can remineralize complex organic matter to produce inorganic nutrients for phytoplankton growth, or secrete algicidal compounds to kill the phytoplankton (Mayali and Azam, ; Liu et al ., ). Certain bacterial populations may be crucial for blooming dynamics and succession (Buchan et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Metaproteomics reveals major microbial players and their metabolic activities during the blooming period of a marine dinoflagellateProrocentrum donghaiense

Zhang

Chen

et al. 2017

Environmental Microbiology

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Interactions between bacteria and phytoplankton during bloom events are essential for both partners, which impacts their physiology, alters ambient chemistry and shapes ecosystem diversity. Here, we investigated the community structure and metabolic activities of free-living bacterioplankton in different blooming phases of a dinoflagellate Prorocentrum donghaiense using a metaproteomic approach. The Fibrobacteres-Chlorobi-Bacteroidetes group, Rhodobacteraceae, SAR11 and SAR86 clades contributed largely to the bacterial community in the middle-blooming phase while the Pseudoalteromonadaceae exclusively dominated in the late-blooming phase. Transporters and membrane proteins, especially TonB-dependent receptors were highly abundant in both blooming phases. Proteins involved in carbon metabolism, energy metabolism and stress response were frequently detected in the middle-blooming phase while proteins participating in proteolysis and central carbon metabolism were abundant in the late-blooming phase. Beta-glucosidase with putative algicidal capability was identified from the Pseudoalteromonadaceae only in the late-blooming phase, suggesting an active role of this group in lysing P. donghaiense cells. Our results indicated that diverse substrate utilization strategies and different capabilities for environmental adaptation among bacteria shaped their distinct niches in different bloom phases, and certain bacterial species from the Pseudoalteromonadaceae might be crucial for the termination of a dinoflagellate bloom.

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“…This paradigm is strengthened by reports of marine bacteria that prey on living phytoplankton (reviewed in Doucette et al, 1998 andMayali andAzam 2004). On the contrary, bacteria can also be mutualistic to phytoplankton (Cole 1982;Mouget et al, 1995;Stewart et al, 1997;Grossart 1999;Ferrier et al, 2002;Liu et al, 2008;Amin et al, 2009). Although these opposing interactions of diatom and bacteria are both observed in nature, there is currently a lack of cohesive evolutionary principle that explains these interactions.…”

Section: Introductionmentioning

confidence: 99%

Host-specific adaptation governs the interaction of the marine diatom, Pseudo-nitzschia and their microbiota

et al. 2013

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The association of phytoplankton with bacteria is ubiquitous in nature and the bacteria that associate with different phytoplankton species are very diverse. The influence of these bacteria in the physiology and ecology of the host and the evolutionary forces that shape the relationship are still not understood. In this study, we used the Pseudo-nitzschia-microbiota association to determine (1) if algal species with distinct domoic acid (DA) production are selection factors that structures the bacterial community, (2) if host-specificity and co-adaptation govern the association, (3) the functional roles of isolated member of microbiota on diatom-hosts fitness and (4) the influence of microbiota in changing the phenotype of the diatom hosts with regards to toxin production. Analysis of the pyrosequencing-derived 16S rDNA data suggests that the three tested species of Pseudo-nitzschia, which vary in toxin production, have phylogenetically distinct bacterial communities, and toxic Pseudo-nitzschia have lower microbial diversity than non-toxic Pseudonitzschia. Transplant experiments showed that isolated members of the microbiota are mutualistic to their native hosts but some are commensal or parasitic to foreign hosts, hinting at co-evolution between partners. Moreover, Pseudo-nitzschia host can gain protection from algalytic bacteria by maintaining association with its microbiota. Pseudo-nitzschia also exhibit different phenotypic expression with regards to DA production, and this depends on the bacterial species with which the host associates. Hence, the influences of the microbiota on diatom host physiology should be considered when studying the biology and ecology of marine diatoms.

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Growth-promoting effects of a bacterium on raphidophytes and other phytoplankton

Cited by 32 publications

References 35 publications

Molecular Identification of the Colony-Associated Cultivable Bacteria of the CyanobacteriumMicrocystis aeruginosaand Their Effects on Algal Growth

Molecular Identification of the Colony-Associated Cultivable Bacteria of the CyanobacteriumMicrocystis aeruginosaand Their Effects on Algal Growth

Metaproteomics reveals major microbial players and their metabolic activities during the blooming period of a marine dinoflagellateProrocentrum donghaiense

Host-specific adaptation governs the interaction of the marine diatom, Pseudo-nitzschia and their microbiota

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