Bacteriochlorophyll and community structure of aerobic anoxygenic phototrophic bacteria in a particle-rich estuary

Cottrell, Matthew T.; Ras, Joséphine; Kirchman, David L.

doi:10.1038/ismej.2010.13

Cited by 58 publications

(57 citation statements)

References 41 publications

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“…Similarly, no clear link between AAP bacterial abundance and oligotrophy was established since abundances of AAP bacteria can be high in estuarine, coastal and shelf waters (e.g. Cottrell et al, 2010;Waidner and Kirchman, 2007). AAP bacteria were found to be more abundant in the upper layers of the photic zone than below the sunlit layers of the water column of the Mediterranean Sea.…”

Section: Bacterial Productionmentioning

confidence: 99%

“…Depth distributions of Chl-a concentrations included a well defined deep chlorophyll maximum (DCM), more pronounced in the western basin, and deepening from west (∼40 to 80 m) to east (from 80 to >100 m) ( Fig. 2; see also Crombet et al, 2011). Surface Mediterranean waters were depleted in nutrients and the thickness of this depleted layer increased towards the east from about 10 m in the Gulf of Lion to more than 100 m in the Levantine basin (for details see Pujo-Pay et al, 2011).…”

Section: Environmental Settingmentioning

confidence: 99%

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Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea

et al. 2011

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Abstract. Aerobic anoxygenic phototrophic (AAP) bacteria are photoheterotrophic prokaryotes able to use both light and organic substrates for energy production. They are widely distributed in coastal and oceanic environments and may contribute significantly to the carbon cycle in the upper ocean. To better understand questions regarding links between the ecology of these photoheterotrophic bacteria and the trophic status of water masses, we examined their horizontal and vertical distribution and the effects of nutrient additions on their growth along an oligotrophic gradient in the Mediterranean Sea. Concentrations of bacteriochlorophyll-a (BChl-a) and AAP bacterial abundance decreased from the western to the eastern basin of the Mediterranean Sea and were linked with concentrations of chlorophyll-a, nutrient and dissolved organic carbon. Inorganic nutrient and glucose additions to surface seawater samples along the oligotrophic gradient revealed that AAP bacteria were nitrogen-and carbon-limited in the ultraoligotrophic eastern basin. The intensity of the Correspondence to: D. Lamy (lamyd2@univie.ac.at) AAP bacterial growth response generally differed from that of the total bacterial growth response. BChl-a quota of AAP bacterial communities was significantly higher in the eastern basin than in the western basin, suggesting that reliance on phototrophy varied along the oligotrophic gradient and that nutrient and/or carbon limitation favors BChl-a synthesis.

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Section: Bacterial Productionmentioning

confidence: 99%

Section: Environmental Settingmentioning

confidence: 99%

Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea

et al. 2011

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“…Surface-associated marine microbiota participate in a plethora of C cycling processes. Photosynthetic and chemolithoautotrophic CO 2 fixation (102,(142)(143)(144)(145)(146)(147)(148), aerobic anoxygenic phototrophic energy conservation (149)(150)(151), seawater methane production and oxidation (143,146,147,152), degradation of biopolymers and other organic matter (102,117,145,153), and heterotrophic respiration (102,104,113,145) are all enhanced on surfaces. N cycling processes such as N 2 fixation (154,155), nitrification (142,143,(156)(157)(158), denitrification (158)(159)(160)(161), dissimilatory nitrate reduction (158,159), anaerobic ammonium oxidation (anammox) (158,162,163), and nitrogenous organic compound degradation (158,(164)(165)(166) are also activities associated with surfaces and can be particularly important at specific depths in the water column.…”

Section: Physiological Challenges and Deleterious Effects Of Microbiamentioning

confidence: 99%

Microbial Surface Colonization and Biofilm Development in Marine Environments

Dang

Lovell

2016

Microbiol Mol Biol Rev

870

636

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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.

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“…In some coastal mesotrophic estuaries, AAP bacteria exceeded 10%, which might be ascribed to the numerous particles in these environments [7][8]. In the South Pacific Ocean, the proportion of AAP bacteria was approximately 25% of total bacterioplankton, suggesting the potential contribution of other environmental variables [9].…”

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confidence: 99%

Distribution of Aerobic Anoxygenic Phototrophs in Freshwater Plateau Lakes

Tian¹,

Wu²,

Zhou³

et al. 2018

Pol. J. Environ. Stud.

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Aerobic anoxygenic phototrophic (AAP) bacteria are photoheterotrophs that use both organic substrates and solar light for carbon and energy requirements. The prevalence of AAP bacteria and their functional role in biogeochemical cycles were numerously reported in ocean habitats [1][2][3][4]. In most studies, they were defined as an important contributor to the carbon cycle. AAP bacteria could be approximately <1% to 10% of total bacteria in the euphotic zones of marine environments [1,[4][5][6]. The cell size of AAP bacteria was significantly larger than Pol. J. Environ. Stud. Vol. 27, No. 2 (2018), 871-879 AbstractAerobic anoxygenic phototrophic (AAP) bacteria are known functionally as photoheterotrophic microbes. Though numerously reported from ocean habitats, their distribution in freshwater lakes is far less documented. In the present study we investigated the dynamics of AAP bacteria in freshwater plateau lakes. Results revealed a high abundance of AAP bacteria in eutrophic lakes. Moreover, AAP bacteria were positively correlated with TN, TP, and Chl a, but the variations of AAP bacterial proportion to potential total bacteria (AAPB%). Alphaproteobacteria-related sequences dominated lakes Luguhu, Erhai, and Chenghai at ratios of 93.9, 85.4, and 70.6%, respectively, and in total comprised eight clearly defined subgroups. Sequences affiliated with Beta-and Grammaproteobacteria were found to be rare taxa. Additionally, Alkalibacterium-like sequences belonging to Firmutes were assigned. Overall, sequences from Alpha-, Beta-, Gammaproteobacteria, and Firmutes separately comprised of 81.6, 8.8, 0.8, and 4.0%. Our present work revealed extreme dynamics of AAP bacteria in both water columns and non-euphotic sediments of plateau aquatic ecosystems, which consolidated their wide distribution and enhanced adaptation.

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Bacteriochlorophyll and community structure of aerobic anoxygenic phototrophic bacteria in a particle-rich estuary

Cited by 58 publications

References 41 publications

Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea

Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea

Microbial Surface Colonization and Biofilm Development in Marine Environments

Distribution of Aerobic Anoxygenic Phototrophs in Freshwater Plateau Lakes

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