Distribution of Epiphytic Bacteria on Freshwater Plants

Baker, J. H.; Orr, D.R.

doi:10.2307/2260356

Cited by 40 publications

(17 citation statements)

References 11 publications

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“…Mats of Cladophora are believed to offer a stable environment for bacteria, shielding them from such things as UV radiation, changes in pH, desiccation, and nutrient depletion . Similarities can be noted between mats of Cladophora and mats of aquatic macrophytes (Baker and Orr 1986). Both mats provide a favorable secondary bacterial habitat, consisting of increased nutrients, protection from the sun, an attachment point for growth, and a stable temperature.…”

mentioning

confidence: 71%

Effect of aquatic macrophytes on the survival ofEscherichia coliin a laboratory microcosm

Kleinheinz

Coenan

Zehms

et al. 2009

Lake and Reservoir Management

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mentioning

confidence: 71%

Effect of aquatic macrophytes on the survival ofEscherichia coliin a laboratory microcosm

Kleinheinz

Coenan

Zehms

et al. 2009

Lake and Reservoir Management

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“…If not coupled to strate the broad spectrum of defenses against epibiosis normal metabolic excretion processes, a s in the freshwhich are possible. Most of the mechanisms may bewater plants investigated by Baker & Orr (1986), the and frequently are -combined to form a multifacetted maintainance of such extreme pH-values in a chemical antifouling adaptation, which covers efficiently the buffer such a s seawater would consume considerable range of potential colonizers (Fig. 3).…”

Section: Mechanical Defensementioning

confidence: 99%

Marine epibiosis. I. Fouling and antifouling: some basic aspects

Wahl¹

1989

Mar. Ecol. Prog. Ser.

1,032

752

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“…Therefore, macroalgae such as D. pulchra, A. armata, and C. serratus employ species-specific chemical metabolites and harbor microbial assemblages that are resistant to compounds produced by the alga. Marine plants and animals frequently harbor species-specific microbial assemblages that are distinct from the assemblages found in the surrounding environment and are important to host defenses (Baker and Orr 1986;Wahl and Hay 1995;Rohwer et al 2002). Several other studies have surveyed both tropical (Ballantine et al 1987;Engel et al 2006) and temperate macroalgae (Cetrulo and Hay 2000) and illustrate the ubiquitous nature of marine chemical defenses.…”

Section: Introductionmentioning

confidence: 99%

Allelochemicals produced by Caribbean macroalgae and cyanobacteria have species-specific effects on reef coral microorganisms

Morrow

Paul²,

Liles

et al. 2011

Coral Reefs

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Coral populations have precipitously declined on Caribbean reefs while algal abundance has increased, leading to enhanced competitive damage to corals, which likely is mediated by the potent allelochemicals produced by both macroalgae and benthic cyanobacteria. Allelochemicals may affect the composition and abundance of coral-associated microorganisms that control host responses and adaptations to environmental change, including susceptibility to bacterial diseases. Here, we demonstrate that extracts of six Caribbean macroalgae and two benthic cyanobacteria have both inhibitory and stimulatory effects on bacterial taxa cultured from the surfaces of Caribbean corals, macroalgae, and corals exposed to macroalgal extracts. The growth of 54 bacterial isolates was monitored in the presence of lipophilic and hydrophilic crude extracts derived from Caribbean macroalgae and cyanobacteria using 96-well plate bioassays. All 54 bacterial cultures were identified by ribotyping. Lipophilic extracts from two species of Dictyota brown algae inhibited[50% of the reef coral bacteria assayed, and hydrophilic compounds from Dictyota menstrualis particularly inhibited Vibrio bacteria, a genus associated with several coral diseases. In contrast, both lipo-and hydrophilic extracts from 2 species of Lyngbya cyanobacteria strongly stimulated bacterial growth. The brown alga Lobophora variegata produced hydrophilic compounds with broad-spectrum antibacterial effects, which inhibited 93% of the bacterial cultures. Furthermore, bacteria cultured from different locations (corals vs. macroalgae vs. coral surfaces exposed to macroalgal extracts) responded differently to algal extracts. These results reveal that extracts from macroalgae and cyanobacteria have species-specific effects on the composition of coral-microbial assemblages, which in turn may increase coral host susceptibility to disease and result in coral mortality.

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Distribution of Epiphytic Bacteria on Freshwater Plants

Cited by 40 publications

References 11 publications

Effect of aquatic macrophytes on the survival ofEscherichia coliin a laboratory microcosm

Effect of aquatic macrophytes on the survival ofEscherichia coliin a laboratory microcosm

Marine epibiosis. I. Fouling and antifouling: some basic aspects

Allelochemicals produced by Caribbean macroalgae and cyanobacteria have species-specific effects on reef coral microorganisms

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