Microbial Physiology
Microbial Physiology - Related Videos
10:20
Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
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Cited by 6 •
2013
We present methods to evaluate how predation risk can alter the chemical quality of herbivore prey by inducing dietary changes to meet demands of heightened stress, and how the decomposition of carcasses from these stressed herbivores slows subsequent plant litter decomposition by soil microbes.
14:42
Biology of Microbial Communities - Interview
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Cited by 3 •
2007
21:02
Investigating the Microbial Community in the Termite Hindgut - Interview
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2007
Jared Leadbetter explains why the termite-gut microbial community is an excellent system for studying the complex interactions between microbes. The symbiotic relationship existing between the host insect and lignocellulose-degrading gut microbes is explained, as well as the industrial uses of these microbes for degrading plant biomass and generating biofuels.
05:33
Physiology of the Circulatory System - Concepts
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2019
Homeostasis Conditions in the external environment of an organism can change rapidly and drastically. To survive, organisms must maintain a fairly constant internal environment, which involves continuous regulation of temperature, pH, and other factors. This balanced state is known as homeostasis, which describes the processes by which organisms maintain their optimal internal conditions. To maintain homeostasis, organisms have developed structures with distinct functions. Physiology is the...
FAQs
Microbial physiology connects substrate use to two linked outputs: ATP, which supports cellular work, and reducing power, which supports chemical transformations in metabolism. The relevant pathways determine how efficiently a microorganism converts available nutrients into usable energy. Examining these outputs helps explain why changing substrates can alter growth and broader cellular performance.
Environmental conditions influence physiology partly by changing gene expression. When oxygen, temperature, pH, or nutrient availability shifts, microorganisms can adjust which cellular functions they emphasize. This regulatory response links external conditions to metabolism, growth, and maintenance, making gene-expression changes important for interpreting why the same organism may behave differently across environments.
These variables provide the context in which microbial functions operate. A change in oxygen or nutrient availability can affect energy conversion, while temperature and pH changes can alter cellular performance and growth. Considering the conditions alongside observed physiology helps distinguish an organism’s general capabilities from responses that arise specifically within a particular environment.
Researchers can relate several observations rather than examining growth in isolation. They can consider how the microorganism obtains nutrients, converts substrates into ATP and reducing power, maintains cellular function, and changes gene expression as conditions shift. Connecting these features provides a functional picture that links environmental inputs with cellular outcomes and supports comparisons among growth conditions.
Physiological information identifies how environmental conditions and available nutrients influence microbial growth and cellular performance. That knowledge can guide cultivation by clarifying conditions that support useful activity, while also informing engineering efforts aimed at producing desired functions. The result is a stronger basis for selecting and optimizing microorganisms for biological applications.
Understanding how microorganisms generate energy, maintain cellular function, and respond to changing conditions can reveal physiological processes relevant to antimicrobial research. In disease biology, the same framework helps explain microbial behavior in host-associated ecosystems. These insights connect cellular activity with survival and function in biologically important environments, supporting more informed investigation of microbial effects.