Microbial Biofilms Facilitate Adhesion in Biofouling Invertebrates

Zardus, John D.; Nedved, Brian T.; Ying, Huang; Tran, Cawa; Hadfield, Michael G.

doi:10.2307/25066663

Cited by 135 publications

(82 citation statements)

References 22 publications

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“…This may indicate that the formation of biofilms by the initial archaeal residents facilitated the colonization of other sludge archaeal groups onto membranes. This phenomenon was also reported in one previous study, where the biofilms increased the adhesion of invertebrates to the biofouling layers (Zardus et al, 2008).…”

Section: Discussionsupporting

confidence: 87%

Characterization of the archaeal community fouling a membrane bioreactor

Luo

Zhang

Tan

et al. 2015

Journal of Environmental Sciences

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Biofilm formation, one of the primary causes of biofouling, results in reduced membrane flux or increased transmembrane pressure and thus represents a major impediment to the wider implementation of membrane bioreactor (MBR) technologies for water purification. Most studies have focused on the role of bacteria in membrane fouling as they are the most dominant and best studied organisms present in the MBR. In contrast, there is limited information on the role of the archaeal community in biofilm formation in MBRs. This study investigated the composition of the archaeal community during the process of biofouling in an MBR. The archaeal community was observed to have lower richness and diversity in the biofilm than the sludge during the establishment of biofilms at low transmembrane pressure (TMP). Clustering of the communities based on the Bray-Curtis similarity matrix indicated that a subset of the sludge archaeal community formed the initial biofilms. The archaeal community in the biofilm was mainly composed of Thermoprotei, Thermoplasmata, Thermococci, Methanopyri, Methanomicrobia and Halobacteria. Among them, the Thermoprotei and Thermoplasmata were present at higher relative proportions in the biofilms than they were in the sludge. Additionally, the Thermoprotei, Thermoplasmata and Thermococci were the dominant organisms detected in the initial biofilms at low TMP, while as the TMP increased, the Methanopyri, Methanomicrobia, Aciduliprofundum and Halobacteria were present at higher abundances in the biofilms at high TMP.

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Section: Discussionsupporting

confidence: 87%

Characterization of the archaeal community fouling a membrane bioreactor

Luo

Zhang

Tan

et al. 2015

Journal of Environmental Sciences

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“…Microbial biofilms affect adhesion of larvae and spores of fouling organisms. In the study of Zardus et al (2008) settlement of the ascidian Phallusia nigra, the polychaete H. elegans, the bryozoan B. neritina and the barnacle Balanus amphitrite was investigated in the laboratory. Only adhesion of B. neritina larvae was unaffected, while adhesion of the other species was facilitated.…”

Section: Antilarval Activity Heterotrophic Bacteriamentioning

confidence: 99%

“…In contrast, the bacterium Cobetia marina inhibited the adhesion strength of spores of Ulva linza (Mieszkin et al 2012). It is not clear how bacteria facilitate or inhibit adhesion of other species but it is possible that multiple biochemical, behavioural and physical mechanisms may be involved (Zardus et al 2008).…”

Section: Antilarval Activity Heterotrophic Bacteriamentioning

confidence: 99%

Mini-review: Inhibition of biofouling by marine microorganisms

2013

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Any natural or artificial substratum exposed to seawater is quickly fouled by marine microorganisms and later by macrofouling species. Microfouling organisms on the surface of a substratum form heterogenic biofilms, which are composed of multiple species of heterotrophic bacteria, cyanobacteria, diatoms, protozoa and fungi. Biofilms on artificial structures create serious problems for industries worldwide, with effects including an increase in drag force and metal corrosion as well as a reduction in heat transfer efficiency. Additionally, microorganisms produce chemical compounds that may induce or inhibit settlement and growth of other fouling organisms. Since the last review by the first author on inhibition of biofouling by marine microbes in 2006, significant progress has been made in the field. Several antimicrobial, antialgal and antilarval compounds have been isolated from heterotrophic marine bacteria, cyanobacteria and fungi. Some of these compounds have multiple bioactivities. Microorganisms are able to disrupt biofilms by inhibition of bacterial signalling and production of enzymes that degrade bacterial signals and polymers. Epibiotic microorganisms associated with marine algae and invertebrates have a high antifouling (AF) potential, which can be used to solve biofouling problems in industry. However, more information about the production of AF compounds by marine microorganisms in situ and their mechanisms of action needs to be obtained. This review focuses on the AF activity of marine heterotrophic bacteria, cyanobacteria and fungi and covers publications from 2006 up to the end of 2012.

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“…This assemblage of microorganisms and EPS is referred to as a biofilm, or slime. The presence of biofilms on surfaces may influence the settlement of propagules of higher organisms such as algal spores (Joint et al 2002, Marshall et al 2006, Mieszkin et al 2013, Patel et al 2003, larvae of barnacles (Dobretsov et al 2013, Hadfield & Paul 2001 and tubeworms (Hadfield 2011, Zardus et al 2008. The colonization by these organisms on surfaces leads to economic and environmental costs, which have been widely reported (Callow & Callow 2011, Fitridge et al 2012, Schultz et al 2011).…”

Section: Introductionmentioning

confidence: 99%