Modeling of Symbiotic Bacterial Biofilm Growth with an Example of the Streptococcus–Veillonella sp. System

Abstract

We present a multi-dimensional continuum mathematical model for modeling the growth of a symbiotic biofilm system. We take a dual-species namely, the Streptococcus–Veillonella sp. biofilm system as an example for numerical investigations. The presented model describes both the cooperation and competition between these species of bacteria. The coupled partial differential equations are solved by using an integrative finite element numerical strategy. Numerical examples are carried out for studying the evolution and distribution of the bio-components. The results demonstrate that the presented model is capable of describing the symbiotic behavior of the biofilm system. However, homogenized numerical solutions are observed locally. To study the homogenization behavior of the model, numerical investigations regarding on how random initial biomass distribution influences the homogenization process are carried out. We found that a smaller correlation length of the initial biomass distribution leads to faster homogenization of the solution globally, however, shows more fluctuated biomass profiles along the biofilm thickness direction. More realistic scenarios with bacteria in patches are also investigated numerically in this study.

Effects of high-grain diet feeding on mucosa-associated bacterial community and gene expression of tight junction proteins and inflammatory cytokines in the small intestine of dairy cattle

“…This study also found an increase in the abundance of potential intestinal pathogenic bacteria, such as Veillonella and Selenomonas, in the jejunal mucosa. Of these 2 genera, Veillonella are strictly anaerobic and parasitize in the intestine and respiratory tract of animals, which can produce endotoxins and therefore play a role in various mixed infections (Feng et al, 2021). Gomez et al (2017) characterized the fecal microbiota between healthy and diarrheic calves within each farm.…”

The Role of Microbiota in Infant Health: From Early Life to Adulthood

“…The genus Veillonella are strictly anaerobic and parasitizes in the mouth, intestine, and respiratory tract of humans and animals (155). They can produce endotoxins and therefore play a role in various mixed infections.…”

“…They can produce endotoxins and therefore play a role in various mixed infections. They are often detected from soft tissue abscesses and blood and are usually normal microbiota (155). The genus Veillonella is also common in the intestine of infants.…”

Symbiotic Bacteria System of Locusta migratoria Showed Antifungal Capabilities against Beauveria bassiana

“…The interactions between insect symbiotic bacteria and invading microbes dictate the type of influence they have on the host [ 19 ]. Almost all interaction patterns known in macroscopic creatures, including rivalry and cooperation, may also be present in microbes [ 20 ]. Many studies have revealed that invasive microorganisms, particularly pathogens, must alter the host’s natural symbiotic microbiome’s homeostasis during colonization [ 21 , 22 ].…”