![]() ![]() The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm Study. %T The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm Study ![]() %0 Turkish Journal of Biology The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm Study More recently, Geoff was the Director of LabX, a public engagement program at the National Academy of Sciences. Geoff then worked at the American Society for Biochemistry and Molecular Biology, first as the Senior Science Fellow and then as head of the Public Outreach Department. N1 - DO - T2 - Turkish Journal of Biology in molecular biology from Princeton University in 2009. T1 - The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm StudyĪU - Yalavarthi NagaKoteswarı, RavichandranRamanıbaı "The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm Study". "The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm Study" The Effect of Tannery Effluent on the Colonization Rate of Plankters: A Microcosm Study “Biofilms will grow and be very sturdy, sometimes in places that we don’t want them, whether that’s in patients with disease that are immunocompromised, or in water treatment plants, or on the hulls of ships.Title = “We’re motivated to study them because they intersect with the human world,” says Asp. “Bacterial organisms, by biomass, are the most predominant life form on the earth,” says Patteson, acknowledging this overlap in interest with Welch, from whose lab they procured the strains of bacteria. count : something (such as a place or an event) that is seen as a small version of something much larger. We don’t exactly know why in the case of the biofilms, but it makes sense that they’re able to exert more force and move faster.” Britannica Dictionary definition of MICROCOSM. ![]() Populations are dynamic, they grow, decline, colonize new populations, and go extinct. Defined as groups of organisms that are genetically and spatially distinct from other such groups, the population is the fundamental unit of evolution. “It makes sense, in a way,” says Patteson, “if you tried to climb a sticky wall instead of a slippery wall, you could exert more force on it. Like the individual organism, the population is a real and functional unit in biology. ![]() Indeed, by mapping the stress, the team was able to show how biofilms exert more pressure on a stiff surface than on a softer one. Unlike with the less controllable agar, Patteson’s team can now make calculations to measure the forces that the biofilms are putting on the gels. “We study mechanics and soft matter systems, so we have equations that describe how something deforms under certain amounts of stress,” says Patteson. To the right, a mathematical model of an elastic solid is used to calculate the stress exerted by the bacteria.īesides design and manipulation of the gels, Patteson and Asp apply physics to biology in the ways that they process the images, measure the boundaries of the biofilms, and calculate how quickly the boundaries expand. The left image depicts how each small part of the hydrogel moved based on the movement of embedded fluorescent beads. In Escherichia coli and Salmonella typhimurium -Cellular and Molecular Biology. “Are they sensing the solid part or the fluid part?” she says. Microbial, Ecology, Ciliates, SAR, Molecular biology, DGGE, High through put sequencing, Marine, Ocean, Microcosm, Microorganisms, Food chains (Ecology). “We call it a complex material because it is a solid but has properties like a fluid.” This mixture of properties, she explains, means that teasing out exactly which aspects make the bacteria behave a certain way more difficult. “It’s a substance popular in culinary applications because it makes things gelatinous and adds texture,” says Patteson. In the past, scientists investigating this question typically grew the colonies on gels made from agar, an extract of red algae. Patteson and her team wanted to investigate what makes a biofilm-or a colony of microorganisms that bond together-grow and flourish on some kinds of surfaces but not others. In a paper published by PNAS Nexus, a new journal from Oxford Academic, Patteson and graduate student Merrill Asp, along with the collaboration of Professor Roy Welch of the biology department, describe the surprising findings from their recent work with bacterial colonies that has potential to help shape further understanding of all living systems and improve outcomes in medicine and health. These images reveal the conclusion that biofilms grow faster as substrate stiffness increases. Serratia marcescens biofilms grown on soft (left) and stiff (right) polyacrylamide (PAA) hydrogels. ![]()
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