Related Experiment Video
Updated: May 8, 2026
07:56
A Set of In Situ Informed Simulated Medium Formats for Culturing Environmentally Acquired Anaerobic Microorganisms
Published on: January 12, 2024
The phenomenon of microbial uncultivability
1Department of Biology, Northeastern University, Boston, MA 02115, USA.
Current Opinion in Microbiology
|September 10, 2013
Summary
Most microbes remain unculturable. A new scout model suggests that the transition from dormancy to activity is a random process, potentially explaining why many microbes resist cultivation and guiding future research efforts.
Area of Science:
- Microbiology
- Theoretical Biology
Background:
- Vast microbial diversity remains unculturable, limiting scientific understanding.
- Recent innovations have improved microbial recovery but haven't fully explained cultivation failures.
Purpose of the Study:
- To explore the reasons behind the inability to cultivate many microbial species.
- To propose a theoretical model that explains microbial dormancy and activation.
Main Methods:
- Review of current cultivation techniques and challenges.
- Application of the recently proposed scout model of microbial life cycle.
Main Results:
- The scout model offers a potential explanation for microbial cultivation difficulties.
- The model posits that the transition from dormancy to activity is a stochastic, noise-driven bistable process.
Conclusions:
- The scout model provides insights into why many microbes are difficult to culture.
- This model can inform and improve future microbial cultivation strategies and research.
Related Concept Videos
01:22Introduction to the Human Microbiota
Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
01:19Key Techniques in Microbiology
Aseptic techniques prevent contamination, ensure experimental accuracy, and protect researchers and microbial cultures. These techniques are essential in clinical, industrial, and research settings where sterility is required.Maintaining Sterility in Laboratory PracticesScientists maintain sterility by sterilizing tools with heat or chemicals, disinfecting work surfaces, and handling cultures in controlled environments. Working near an open flame or within a laminar flow hood reduces the risk...
01:29Need for Obtaining Pure Cultures
Pure cultures, defined as the growth of a single microorganism species isolated from mixed populations, are fundamental tools in microbiological research and practical applications. These cultures ensure genetic and physiological uniformity, allowing researchers to study microbial traits under controlled conditions.Isolation and Maintenance of Pure CulturesObtaining a pure culture involves isolating a single microbial type from a mixed sample through techniques such as serial dilutions, streak...
01:24iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...
01:28Introduction to Microbial Ecology
Microbial ecology examines the complex web of interactions and diversity among microorganisms within various ecosystems. This field seeks to understand how microbial populations adapt to and influence their environments and how these interactions shape broader ecological processes. Microbes are integral to ecosystem function, participating in nutrient cycling, energy flow, and the maintenance of environmental homeostasis.An ecosystem represents a dynamic interaction between living organisms...
01:26Microbial Interactions: Competition
Microbial competition is an ecological interaction in which microorganisms vie for limited resources within shared environments. These resources may include nutrients, space, or light, depending on the system. The intensity and outcome of competition are influenced by the environmental context, such as nutrient availability, spatial constraints, and the diversity of microbial species present. These competitive interactions significantly influence the structure, function, and resilience of...