Factors Affecting Biofilm Formation in<i>in vitro</i>and in the Rhizosphere

Ansari, Firoz Ahmad; Jafri, Huma; Ahmad, Iqbal; Abulreesh, Hussein H.

doi:10.1002/9781119246329.ch15

Cited by 32 publications

(13 citation statements)

References 62 publications

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“…Ten of the 28 atypical A. salmonicida isolates only showed the potential to form biofilm in the presence of antibiotic, demonstrating that numerous culture conditions may need to be tested if seeking to determine the biofilm‐forming potential of a particular bacterium. In addition to antibiotics, many other environmental factors can influence biofilm formation including temperature, nutrient availability, surface properties (e.g., charge, texture, material) and the presence of salt, chelating agents and membrane‐perturbating compounds (Ansari, Jafri, Ahmad, & Abulreesh, 2017; Cai, De La Fuente, & Arias, 2013; Chenia & Duma, 2017; Talagrand‐Reboul et al., 2017). All of the isolates showed evidence for being able to form biofilm in vitro under at least one of the culture conditions employed in this present study, thus further confirming fish pathogenic isolates of atypical A. salmonicida to be capable of this phenotype.…”

Section: Discussionmentioning

confidence: 99%

“…This present study was performed in vitro and under a specific set of conditions, and whether the observations described herein occur in aquaculture facilities under operating conditions remains to be confirmed. The environmental conditions on a fish farm, such as salt concentrations, nutrient concentrations and temperature, as well as the physical nature of the surface structures to which the bacteria can adhere, will exert a great influence on biofilm produced by the bacteria (Ansari et al., 2017; Carballo et al., 2000). Furthermore, natural biofilms consist of many different species of bacteria and other organisms and the effects of being in such a diverse community on biofilm formation in the absence or presence of antibiotics remain unknown.…”

Section: Discussionmentioning

confidence: 99%

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Antibiotics modulate biofilm formation in fish pathogenic isolates of atypical Aeromonas salmonicida

Desbois

Cook

Buba

2020

Journal of Fish Diseases

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Antibiotics modulate biofilm formation in fish pathogenic isolates of atypical Aeromonas salmonicida

Desbois

Cook

Buba

2020

Journal of Fish Diseases

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“…Acid Red 4 The conclusions of this research work include; (a) three and five times higher decomposition ratios for the dead-end system than the cross-flow system, (b) on enhancing catalyst loading and light intensity, the decomposition ratio has enhanced, but at higher catalyst loading it remained constant (c) and with increasing flow rate the decomposition ratio declined Wang et al (2008) transform into planktonic bacteria through a cell-tocell signaling procedure (Webb 2009;Paridah et al 2016). Factors that affect the formation of biofilm are nutrients, pH, temperature, the surface topology of support media, velocity, turbulence, hydrodynamics, production of EPS, and divalent cations (Ansari et al 2017;Krivorot et al 2011). To allocate the attachment surfaces for biofilm development, the Solid Support Media (SSM) is incorporated in the suspended growth reactors.…”

Section: Wastewater Treatment Using Biofilmsmentioning

confidence: 99%

A review on advanced physico-chemical and biological textile dye wastewater treatment techniques

Donkadokula

Kola

Naz

et al. 2020

Rev Environ Sci Biotechnol

352

105

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The utilization of dyes in textile industries has enormously increased in recent years and has created several environmental problems. Currently, several methods are in practice to treat wastewaters. Effective and efficient treatment techniques before the discharge of used water in the environment are the need of the hour. This short review covers the research and recent developments in advanced wastewater treatment techniques such as nanophotocatalysis, ceramic nanofiltration membranes, and biofilms. The primary intent of this review article is to contribute the ready-made references for the active researchers and scientists working in the field of wastewater treatment. This review has mainly focused on advanced physicochemical and biological techniques for the treatment of textile dye wastewaters. Further, the influence of various operating factors on the treatment, advantages, and disadvantages of various techniques was also discussed. The recently developed materials for wastewater treatment are also summarized based on the latest available literature.

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“…(81), which is heavily influenced by physiochemical controls such as pH (82). Moreover, many of these cations influence soil aggregation (18), and biofilm formation (83), so it is not clear if they directly act on nitrifier cellular machinery or indirectly through altering their microhabitats. Ultimately, this section serves to explore literature that supports the findings of this study, and to pose avenues of exploration for future research.…”

Section: Micronutrients Influence On Nitrification and Nitrifiersmentioning

confidence: 99%

Long Term Influence of Fertility and Rotation on Soil Nitrification Potential and Nitrifier Communities

Raglin

Soman

et al. 2022

Front. Soil Sci.

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The agricultural imprints on soil microbial processes manifest at various timescales, leaving many temporal patterns to present slowly. Unfortunately, the lack of long-term continuous agricultural field sites in North America has left gaps in our understanding of agricultural management on biogeochemical processes and their controlling microbiota. Nitrification, ammonium oxidation by bacteria and archaea, is a critical control point in terrestrial nitrogen fluxes by oxidizing cationic ammonium to anionic nitrate, promoting nitrate leaching. Moreover, nitrous oxide is produced during nitrification, contributing to massive nitrous oxide emissions from fertilized agroecosystems. Nitrification is sensitive to many macro and micro-ecological filters, as nitrifiers are obligate aerobes and are sensitive to numerous non-growth substrates and metal ions. This study sought to understand the long-term implications of various rotation and fertilizer regimes on nitrification potential and nitrifying bacterial communities in the Morrow Plots (Urbana, IL). The Morrow Plots was established in 1876 and are the longest continuous field experiments in North America, making it the only site in America capable of assessing the impact of over 140 years of agricultural management on nitrification. The Morrow Plots contrasts fertilizer (manure, inorganic, unfertilized) and rotation (continuous corn, corn-soy, corn-oat alfalfa), allowing us to explore how conventional vs. regenerative agriculture practices impact nitrifier communities. The results of this study suggest that fertilizer and rotation interact to promote distinct bacterial nitrifier communities. Nitrification potential is highest in manure corn-oat-alfalfa plots, suggesting ammonium availability is not solely responsible for active nitrifier communities. Various soil chemical variables, like CEC, Mg, and Ca, significantly influenced nitrifier community beta-diversity, using 16S rRNA amplicon sequencing, suggesting long-term accumulation of specific cations diverge microbial community assembly. While this study only uses nitrification potential enzyme activity instead of isotope analyses, it sheds light on the importance of various physiochemical drivers on nitrification potential and communities. The results support the need for a more precise exploration of the mechanisms controlling field-scale nitrification rates over large temporal scales. Put together, this study supports the importance of long-term field sites for understanding agricultural manipulations of microbial biogeochemical cycling and sheds light on the micronutrients influencing nitrifier communities and potential activity.

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Factors Affecting Biofilm Formation inin vitroand in the Rhizosphere

Cited by 32 publications

References 62 publications

Antibiotics modulate biofilm formation in fish pathogenic isolates of atypical Aeromonas salmonicida

Antibiotics modulate biofilm formation in fish pathogenic isolates of atypical Aeromonas salmonicida

A review on advanced physico-chemical and biological textile dye wastewater treatment techniques

Long Term Influence of Fertility and Rotation on Soil Nitrification Potential and Nitrifier Communities

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