Nitric Oxide Treatment for the Control of Reverse Osmosis Membrane Biofouling

Barnes, Robert J.; Low, Jiun Hui; Bandi, Ratnaharika R.; Tay, Martin; Chua, Felicia; Aung, Theingi; Fane, Anthony G.; Kjelleberg, Staffan; Rice, Scott A.

doi:10.1128/aem.03404-14

Cited by 48 publications

(40 citation statements)

References 47 publications

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“…The question of reproducibility will also apply to more complex models of biofilm community interactions, which while more challenging, are arguably still tractable. For example, we have shown that an enrichment culture of a mixed microbial community can be used in repeated studies to foul water purification membranes, where the biofouling process and community composition are reproducible within certain limits (Barnes et al ., 2015). Similarly, a highly species rich community undergoing granulation shows a strongly reproducible shift in community composition, driven by quorum sensing, highlighting that high complexity is not a barrier to reproducibility (Tan et al ., 2015).…”

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confidence: 99%

Next‐generation studies of microbial biofilm communities

Rice

Wuertz

Kjelleberg

2016

Microbial Biotechnology

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SummaryAs we look into the future of microbial biofilm research, there is clearly an emerging focus on communities rather than populations. This represents an essential change in direction to more accurately understand how and why microorganisms assemble into communities, as well as the functional implications for such a life style. For example, current research studies shows that communities display emergent properties or functions that are not predicted from the individual single species populations, including elevated stress tolerance and resistance to antibiotics. Models for mixed species biofilms can be very simple, comprised only a handful of species or can be extremely species rich, with hundreds or thousands of species present. The future holds much promise for this area of research, where investigators will increasingly be able to resolve, at the molecular and biochemical levels, interspecies relationships and mechanisms of interaction. The outcome of these studies will greatly enhance our understanding of the ecological and evolutionary factors that drive community function in natural and engineered systems.

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mentioning

confidence: 99%

Next‐generation studies of microbial biofilm communities

Rice

Wuertz

Kjelleberg

2016

Microbial Biotechnology

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“…); this suggests that NO may be useful for treating biofilms in a variety of medical and industrial applications (Barnes et al . ). NO also forms part of a stress‐surveillance system in diatoms (Vardi et al .…”

Section: Challenge 2: Marine Biofilmsmentioning

confidence: 97%

“…Furthermore, because unrestricted use of antibiotics often results in acquired antibiotic resistance that can be dangerous to human health, the development of nature-inspired strategies, including companion cropping, can potentially overcome current limitations in the control of pathogens. Scientists have only now begun to elucidate the molecular mechanisms controlling bacterial biofilm dispersal (Kaplan 2010), but the targeted delivery of the biogenic infochemical nitric oxide (NO) to such biofilms has been shown to stimulate the dispersal of bacteria from an existing biofilm matrix (Barraud et al 2015); this suggests that NO may be useful for treating biofilms in a variety of medical and industrial applications (Barnes et al 2015). NO also forms part of a stresssurveillance system in diatoms (Vardi et al 2006), and recent results suggest that signaling interference might also be a strategy to control diatom biofilm formation.…”

Section: Challenge 2: Marine Biofilmsmentioning

confidence: 99%

Using chemical language to shape future marine health

Saha

Berdalet

Carotenuto

et al. 2019

Frontiers in Ecol & Environ

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“Infochemicals” (information‐conveying chemicals) dominate much of the underwater communication in biological systems. They influence the movement and behavior of organisms, the ecological interactions between and across populations, and the trophic structure of marine food webs. However, relative to their terrestrial equivalents, the wider ecological and economic importance of marine infochemicals remains understudied and a concerted, cross‐disciplinary effort is needed to reveal the full potential of marine chemical ecology. We highlight current challenges with specific examples and suggest how research on the chemical ecology of marine organisms could provide opportunities for implementing new management solutions for future “blue growth” (the sustainable use of ocean resources) and maintaining healthy marine ecosystems.

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“…Bacterial existence in the wild is predominated by life in spatially structured groups, termed biofilms (1,2), which inhabit environments ranging from the rhizosphere (3), to chronic infections (4,5), to the pipes of industrial and wastewater flow systems (6,7), to the surfaces of marine snow (8)(9)(10)(11)(12)(13). Although living in groups correlates with 45 increased tolerance to many exogenous threats, including antibiotic exposure (14-16), biofilm-dwelling cells also experience intense competition for space and resources (2, 17,18).…”

Section: Introductionmentioning

confidence: 99%

Filamentation ofVibrio choleraeis an adaptation for surface attachment and biofilm architecture

Wucher

Bartlett

Persat

et al. 2018

Preprint

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Collective behavior in spatially structured groups, or biofilms, is the norm among microbes in their natural environments. Though microbial physiology and biofilm formation have been studied for decades, tracing the 25 mechanistic and ecological links between individual cell properties and the emergent features of cell groups is still in its infancy. Here we use single-cell resolution confocal microscopy to explore biofilm properties of the human pathogen Vibrio cholerae in conditions closely mimicking its marine habitat. We find that some -but not allpandemic isolates produce filamentous cells than can be over 50 µm long. This filamentous morphotype gains a profound competitive advantage in colonizing and spreading on particles of chitin, the material many marine Vibrio 30 species depend on for growth outside of hosts. Furthermore, filamentous cells can produce biofilms that are independent of all currently known secreted components of the V. cholerae biofilm matrix; instead, filamentous biofilm architectural strength appears to derive from the entangled mesh of cells themselves. The advantage gained by filamentous cells in early chitin colonization and growth is counter-balanced in longer term competition experiments with matrix-secreting V. cholerae variants, whose densely packed biofilm structures displace 35 competitors from surfaces. Overall our results reveal a novel mode of biofilm architecture that is dependent on filamentous cell morphology and advantageous in environments with rapid chitin particle turnover. This insight provides concrete links between V. cholerae cell morphology, biofilm formation, marine ecology, and -potentially -the strain composition of cholera epidemics. 40We discovered that some pandemic isolates of V. cholerae, and in particular strain CVD112 of the O139 serogroup, 75filaments aggressively under nutrient-limited conditions, including on particles of chitin in sea water. Filamentation confers markedly altered chitin colonization and biofilm architecture relative to shorter cells. Differences in chitin colonization and biofilm architecture, in turn, strongly influence competition for space and resources, suggesting that normal-length and filamentous morphotypes are fundamentally adapted to different regimes of chitin particle turnover in the water column. Overall, our results highlight a novel mode of biofilm assembly and yield new insights 80into the fundamental roles of cell shape in the marine ecology of V. cholerae. 500surface attachment and biofilm architecture

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Nitric Oxide Treatment for the Control of Reverse Osmosis Membrane Biofouling

Cited by 48 publications

References 47 publications

Next‐generation studies of microbial biofilm communities

Next‐generation studies of microbial biofilm communities

Using chemical language to shape future marine health

Filamentation ofVibrio choleraeis an adaptation for surface attachment and biofilm architecture

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