Iron-limiting Conditions
Iron-limiting Conditions - Related Videos
03:06
Culturing Mycobacterium tuberculosis Under Iron-Limited Conditions
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2025
Source: Gupta, S., et al. Isolation and Characterization of Extracellular Vesicles Produced by Iron-limited Mycobacteria. J. Vis. Exp. (2019)This video demonstrates the procedure for culturing Mycobacterium tuberculosis under iron-limited conditions to induce iron stress and promote the secretion of siderophores that support bacterial survival.
07:40
A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions
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Cited by 1 •
2017
This protocol proposes a novel biaxial testing system used on a resistance heating uniaxial tensile test machine in order to determine the forming limit diagram (FLD) of sheet metals under hot stamping conditions.
08:27
Isolation and Characterization of Extracellular Vesicles Produced by Iron-limited Mycobacteria
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Cited by 6 •
2019
Mycobacterium tuberculosis shows increased production and release of extracellular vesicles in response to low iron conditions. This work details a protocol for generating low iron conditions and methods for the purification and characterization of mycobacterial extracellular vesicles released in response to iron deficiency.
08:45
Quantitating Iron Transport Across the Mouse Placenta In Vivo Using Nonradioactive Iron Isotopes
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Cited by 3 •
2022
This article demonstrates how to prepare and administer transferrin-bound nonradioactive isotopic iron for studies of iron transport in mouse pregnancy. The approach for quantifying isotopic iron in fetoplacental compartments is also described.
08:24
Using Mycobacterium smegmatis as a Bioindicator for Zinc-Limited Growth Conditions in Mycobacteria
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Cited by 1 •
2024
This protocol details preparation of Zn2+-limited media, growth vessels, and seed cultures to produce Zn2+-limited ribosomes in mycobacteria. Traces of Zn2+ lead to Zn2+-limiting growth and we describe morphogenic features used as bioindicators to verify Zn2+ limitation in vitro in the model bacterium, Mycobacterium smegmatis, and the human pathogen M. tuberculosis.
FAQs
Cells can increase iron uptake when available supplies no longer support normal demands. They may also produce siderophores, which are chelators associated with iron acquisition, or redirect metabolism toward pathways that use available resources differently. These responses help explain how organisms maintain growth-related functions while adjusting to restricted iron access.
Iron supports electron transport and the activity of iron-dependent enzymes. When scarcity limits these functions, cells may experience reduced capacity for energy production and biosynthesis, which can constrain growth. The resulting metabolic pressure provides a mechanistic link between environmental iron availability and changes in cellular physiology.
Siderophore production represents an active response to restricted iron availability. These molecules act as chelators and support iron-acquisition strategies, allowing cells to address the shortage rather than relying only on existing intracellular supplies. Studying this response helps researchers examine how organisms adapt metabolically and compete for an essential resource.
Researchers commonly model them with iron-depleted media or with chelating agents that reduce biologically available iron. These experimental systems provide a way to examine how cells alter uptake, siderophore production, and metabolism when iron becomes scarce. The approach is useful for connecting a controlled environmental change with measurable physiological responses.
Iron limitation is relevant when researchers investigate how pathogens and hosts respond to restricted access to iron. Experimental models can reveal changes in microbial physiology and iron-acquisition behavior under conditions that challenge growth. This context helps clarify how iron availability influences interactions between organisms and supports research into strategies for controlling organisms that depend on iron acquisition.
In plant biology, iron-limiting conditions support research on plant nutrition and responses to inadequate iron availability. In ecology, they help researchers examine competition among organisms seeking the same resource. Together, these applications connect cellular iron-acquisition mechanisms with larger questions about growth, adaptation, resource use, and biological interactions.