Bacterial Predator Life Cycle
Bacterial Predator Life Cycle - Related Videos
08:56
Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy
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Cited by 6 •
2020
Presented here is a protocol that describes monitoring of the complete life cycle of predatory bacterium Bdellovibrio bacteriovorus using time-lapse fluorescence microscopy in combination with an agarose pad and cell-imaging dishes.
02:39
The Angiosperm Life Cycle
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2020
Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte. Today, most plants grow from seeds and produce flowers and fruit; such plants are called angiosperms. Angiosperms begin as seeds—structures consisting of a protective seed coat, a nutrient...
01:10
Retrovirus Life Cycles
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2019
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
01:26
The Life-Cycle Hypothesis
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2025
The Life-Cycle Hypothesis (LCH), formulated by Franco Modigliani, offers a framework for understanding how individuals allocate consumption and saving across their lifespan to optimize financial well-being. Instead of linking consumption strictly to current income, the LCH posits that individuals plan intertemporally, aiming for consumption smoothing by balancing saving and dissaving in accordance with expected changes in income over time.Intertemporal Consumption SmoothingThe hypothesis...
01:23
Characteristics of Life
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2026
Biology is a natural science that studies life and living organisms, including their structure, function, development, interactions, evolution, distribution, and taxonomy. The field's scope is extensive and divided into several specialized disciplines, such as anatomy, physiology, ethology, genetics, and many more. All living things share a few key traits, including cellular organization, heritable genetic material and the ability to adapt/evolve, metabolism to regulate energy needs, the...
FAQs
The attack phase prepares motile predator cells to find and recognize susceptible prey before intracellular growth begins. Once a suitable host is encountered, the predator penetrates the prey’s outer membrane and enters the periplasm. This stage-specific transition is essential because it links environmental searching with the protected growth phase inside a transformed prey cell.
The bdelloplast is the rounded form produced after prey invasion and remodeling. It provides the structural setting in which the predator grows within the prey’s periplasm while using nutrients derived from the host. Formation of this compartment marks a shift from invasion to exploitation and helps organize the events that precede predator replication and release.
After entering the prey, the predator converts host-derived nutrients into the material needed for growth and coordinated division. Replication therefore depends on successful exploitation of the prey rather than on an independent external growth phase. The resulting progeny remain associated with the consumed host until division is completed and envelope rupture releases them.
A useful examination separates attack-phase motility and prey recognition from membrane penetration, periplasmic growth, bdelloplast formation, replication, coordinated division, and progeny release. Treating these as distinct stages helps researchers connect visible changes in the prey cell with specific biological events. It also supports clearer comparisons among experiments addressing invasion, growth, or lysis.
Completion is indicated by rupture of the prey envelope and release of newly formed predator cells. Earlier observations, such as a rounded bdelloplast, show that invasion and intracellular growth have occurred but do not by themselves demonstrate completion. Tracking the sequence from host remodeling through lysis allows researchers to distinguish an ongoing cycle from a finished one.
This life cycle provides a model for studying microbial interactions, bacterial evolution, and biological control. Because the predator locates, invades, exploits, and lyses another bacterium, researchers can examine how one microbial population affects another across defined stages. The system also informs investigations of antimicrobial strategies and possible alternatives to conventional antibiotics.