Growth Phenotypes
Growth Phenotypes - Related Videos
09:34
Identification of Growth Inhibition Phenotypes Induced by Expression of Bacterial Type III Effectors in Yeast
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Cited by 33 •
2010
In this video, we describe a procedure for the expression of bacterial type III effectors in yeast and the identification of effector-induced growth inhibition phenotypes. Such phenotypes can be subsequently exploited to elucidate effector functions and targets.
09:40
RNAi Screening to Identify Postembryonic Phenotypes in C. elegans
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Cited by 9 •
2012
We describe a sensitized method to identify postembryonic regulators of protein expression and localization in C. elegans using an RNAi-based genomic screen and an integrated transgene that expresses a functional, fluorescently tagged protein.
10:45
In Situ Visualization of Axon Growth and Growth Cone Dynamics in Acute Ex Vivo Embryonic Brain Slice Cultures
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Cited by 4 •
2021
This protocol demonstrates a straightforward and robust method to study in situ axon growth and growth cone dynamics. It describes how to prepare ex vivo physiologically relevant acute brain slices and provides a user-friendly analysis pipeline.
09:21
Multipronged Phenotyping Approaches to Characterize Sugarcane Root Systems
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Cited by 1 •
2022
Characterizing root system traits is one of the areas of research that is still in its infancy, particularly in sugarcane. Integrating multiple approaches to precisely phenotype sugarcane roots leads to comprehensive and holistic results, enabling the utilization of identified traits and mechanisms for conventional and molecular breeding.
11:46
Axon Stretch Growth: The Mechanotransduction of Neuronal Growth
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Cited by 30 •
2011
A unique tissue engineering method was developed to elongate numerous nerve fibers in culture by recapitulating axon stretch growth; a form of nervous system growth whereby nerves elongate in conjunction with growth of the enlarging body.
FAQs
Growth phenotypes emerge when genetic programs operate within particular environmental conditions. Genes can influence cell division, nutrient use, development, and stress responses, while the environment can alter how those processes proceed. Consequently, the same organism may show different growth behavior across conditions, and contrasting phenotypes can reveal interactions between inherited biology and surroundings.
Different measurements capture different aspects of biological change. Growth rate describes how quickly increase occurs, population density reflects the amount present, colony size can support comparisons among microbial samples, and morphology records changes in form. Survival provides another outcome when conditions impair growth. Together, these measures provide a more informative comparison than one measurement alone.
Nutrient use affects whether cells or organisms can sustain increases in size, number, or biomass, while stress responses can redirect biological activity under unfavorable conditions. These influences may change growth rate, survival, morphology, or final population density. Measuring such outcomes under defined conditions helps connect an environmental challenge with its biological effect.
Researchers compare strains by observing their growth under the same defined conditions and recording comparable outcomes over time. Differences in rate, density, colony size, morphology, or survival can indicate that genetic background affects a biological process. This approach helps identify altered gene function while reducing the likelihood that differing environments explain the observed contrast.
A basic workflow begins by establishing defined conditions, selecting the growth outcome to monitor, and following samples over time. Researchers may record growth rate, population density, colony size, morphology, or survival, then compare the resulting patterns among organisms or conditions. The selected measurement should match the biological question, such as growth impairment or altered development.
Growth phenotypes provide quantitative evidence of how organisms respond to altered conditions, including drug exposure or environmental changes. Researchers can examine shifts in growth rate, density, morphology, or survival to determine whether a condition affects biological performance. These measurements support comparisons across treatments and help characterize the nature of the observed response.
The same measurement framework can address different biological questions. In microbial physiology, growth patterns can indicate changes in nutrient use or stress responses. In development, altered growth can reflect disrupted developmental processes. In disease biology, comparisons of growth or survival can provide evidence for mechanisms affecting cells or populations. This flexibility makes growth phenotyping useful across biological systems.