Formation of Polyhydroxyalkanoate in Aerobic Anoxygenic Phototrophic Bacteria and Its Relationship to Carbon Source and Light Availability

Xiao, Naiqi G.; Jiao, Nianzhi

doi:10.1128/aem.05955-11

Cited by 60 publications

(50 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Apparently, D. shibae DFL12 T uses the formation of PHB under nitrate-reducing conditions for balancing the disturbed central metabolism (see above) and the regeneration of electron acceptors as shown in previous studies (41,44). Because NADPH is used in the second step of PHB formation for the reduction to (R)-3-hydroxybutanoyl-CoA, NADP ϩ becomes again available for other oxidation reactions.…”

Section: Adaptation Of the Electron Transfer Chains To Anoxic Conditimentioning

confidence: 95%

See 1 more Smart Citation

Gene Regulatory and Metabolic Adaptation Processes of Dinoroseobacter shibae DFL12T during Oxygen Depletion

Laaß

Kleist

Bill

et al. 2014

Journal of Biological Chemistry

View full text Add to dashboard Cite

Background:The bacterium Dinoroseobacter shibae was exposed to environmental anoxia. Results: Systems biology analyses showed the time-resolved cellular adaptation processes of D. shibae during oxygen depletion. Conclusion:Oxygen depletion led to a metabolic crisis due to the missing regeneration of ATP and reduction equivalents, until denitrification was established. Significance: Here we have elucidated the adaptation processes of marine bacteria to anoxic respiration.

show abstract

Section: Adaptation Of the Electron Transfer Chains To Anoxic Conditimentioning

confidence: 95%

“…Polyhydroxybutanoate is produced by numerous microorganisms in response to an imbalanced nutrient supply (40,41) or, as suggested by Trautwein et al (42), during impaired denitrification. The polymer is usually employed by microorganisms as a form of energy storage molecule.…”

Section: Adaptation Of the Electron Transfer Chains To Anoxic Conditimentioning

confidence: 99%

Gene Regulatory and Metabolic Adaptation Processes of Dinoroseobacter shibae DFL12T during Oxygen Depletion

Laaß

Kleist

Bill

et al. 2014

Journal of Biological Chemistry

View full text Add to dashboard Cite

show abstract

“…This process seems to be enhanced by surface association (150,151,173,762,(778)(779)(780) and may enhance ATP production, active transport, motility, and cell growth yield on available organic matter (272,779). Some MRC bacteria synthesize and store poly-␤-hydroxyalkanoates when carbon and energy resources are available but inorganic nutrients are limiting (781,782), which may enhance bacterial viability via poly-␤-hydroxyalkanoate catabolism when other sources of organic substrates are scarce (594). Some MRC bacteria also carry out lithotrophic sulfur oxidation to conserve additional energy (783,784), which may be explored to enhance anaplerotic CO 2 fixation, growth, and survival (761,785).…”

Section: The Marine Roseobacter Cladementioning

confidence: 99%

Microbial Surface Colonization and Biofilm Development in Marine Environments

Dang

Lovell

2016

Microbiol Mol Biol Rev

870

636

View full text Add to dashboard Cite

SUMMARYBiotic and abiotic surfaces in marine waters are rapidly colonized by microorganisms. Surface colonization and subsequent biofilm formation and development provide numerous advantages to these organisms and support critical ecological and biogeochemical functions in the changing marine environment. Microbial surface association also contributes to deleterious effects such as biofouling, biocorrosion, and the persistence and transmission of harmful or pathogenic microorganisms and their genetic determinants. The processes and mechanisms of colonization as well as key players among the surface-associated microbiota have been studied for several decades. Accumulating evidence indicates that specific cell-surface, cell-cell, and interpopulation interactions shape the composition, structure, spatiotemporal dynamics, and functions of surface-associated microbial communities. Several key microbial processes and mechanisms, including (i) surface, population, and community sensing and signaling, (ii) intraspecies and interspecies communication and interaction, and (iii) the regulatory balance between cooperation and competition, have been identified as critical for the microbial surface association lifestyle. In this review, recent progress in the study of marine microbial surface colonization and biofilm development is synthesized and discussed. Major gaps in our knowledge remain. We pose questions for targeted investigation of surface-specific community-level microbial features, answers to which would advance our understanding of surface-associated microbial community ecology and the biogeochemical functions of these communities at levels from molecular mechanistic details through systems biological integration.

show abstract

“…In the MCP special section here, 6 research papers are included to address some specific aspects, including bacterial carbon storage, growth and dynamics of the functional groups of heterotrophic bacteria, cyanobacteria, and archaea, interactions between viruses and their hosts, and microbial carbon products, such as lipids and colored dissolved organic matter (CDOM). The formation of polymers as cellular carbon storage is verified to be common in aerobic anoxygenic phototrophic bacteria (AAPB) when they are provided with substrates with a high C/N ratio and under light (61). Once released into the environment, polymers can be speciesspecific RDOC or RDOC precursors.…”

Section: Vol 77 2011mentioning

confidence: 99%

The Microbial Carbon Pump: from Genes to Ecosystems

Jiao

Zheng

2011

Appl Environ Microbiol

Self Cite

View full text Add to dashboard Cite

The majority of marine dissolved organic carbon (DOC) is resistant to biological degradation and thus can remain in the water column for thousands of years, constituting carbon sequestration in the ocean. To date the origin of such recalcitrant DOC (RDOC) is unclear. A recently proposed conceptual framework, the microbial carbon pump (MCP), emphasizes the microbial transformation of organic carbon from labile to recalcitrant states. The MCP is concerned with both microbial uptakes and outputs of DOC compounds, covering a wide range from gene to ecosystem levels. In this minireview, the ATP binding cassette (ABC) transporter is used as an example for the microbial processing of DOC at the genetic level. The compositions of the ABC transporter genes of the two major marine bacterial clades Roseobacter and SAR11 demonstrate that they have distinct patterns in DOC utilization: Roseobacter strains have the advantage of taking up carbohydrate DOC, while SAR11 bacteria prefer nitrogen-containing DOC. At the ecosystem level, bacterially derived RDOC based on D-amino acid biomarkers is reported to be responsible for about a quarter of the total marine RDOC pool. Under future global warming scenarios, partitioning of primary production into DOC could be enhanced, and thus the MCP could play an even more important role in carbon sequestration by the ocean. Joint efforts to study the MCP from multiple disciplines are required to obtain a better understanding of ocean carbon cycle and its coupling with global change.The ocean acts as a "sink" of atmospheric CO 2 , thus mitigating global warming (44, 48). The recognized biological mechanism for this sink is the "biological pump," which is based on the photosynthetic fixation of CO 2 and subsequent carbon export driven mainly by sinking of particulate organic carbon (POC). However, the buried POC in the ocean sediment is Ͻ0.1% of primary production formed in the surface ocean, while the rest of the organic carbon is mainly respired back to CO 2 (14, 28) . Nevertheless, the ocean possesses a huge dissolved organic carbon (DOC) pool, which accounts for about 95% of the total remaining organic carbon (22, 39). The majority of this DOC pool is recalcitrant to biological degradation and can persist in the water column for thousands of years, constituting carbon sequestration in the ocean (4,22,25,39,40). However, the origin of this recalcitrant DOC pool is presently unclear.Recently a new concept was proposed to address this matter, the "microbial carbon pump" (MCP), which refers to the microbial processes that transform labile DOC (LDOC) into recalcitrant DOC (RDOC) (25). The MCP is a conceptual framework to explicitly integrate environmental, trophic, physiological, molecular, and genomic processes relevant to the in situ microbial activities that regulate RDOC production and dynamics (25, 26) (Fig. 1).Diverse microbes and DOC compounds in the ocean. The transformation of DOC is carried out by heterotrophic microbes, and the pathways and rates of DOC transformation determine the ...

show abstract

Formation of Polyhydroxyalkanoate in Aerobic Anoxygenic Phototrophic Bacteria and Its Relationship to Carbon Source and Light Availability

Cited by 60 publications

References 44 publications

Gene Regulatory and Metabolic Adaptation Processes of Dinoroseobacter shibae DFL12T during Oxygen Depletion

Gene Regulatory and Metabolic Adaptation Processes of Dinoroseobacter shibae DFL12T during Oxygen Depletion

Microbial Surface Colonization and Biofilm Development in Marine Environments

The Microbial Carbon Pump: from Genes to Ecosystems

Contact Info

Product

Resources

About