Ever since the days of Holger W. Jannasch, the great deep sea microbiologist, the culturing and isolation of barophiles have come to existence. But using high pressure chemostat facilities are hard and high priced. We discuss a simple lab make barophile enrichment apparatus to culture and study deep sea microbes. We also isolate deep sea microbes that corrodes iron from sunken ships.
Table of Contents
1. Introduction
2. Materials and Methods
3. Results
4. Discussion
Research Objective and Topics
This paper aims to design and implement a cost-effective, laboratory-scale enrichment apparatus to culture and study deep-sea barophilic microbes, while specifically investigating their role in the corrosion of metallic iron from sunken ships.
- Development of a low-cost, pressure-capable Winogradsky-based system.
- Methodology for simulating deep-sea environmental conditions in the laboratory.
- Study of sulfate-reducing bacteria and their metabolic interactions with iron.
- Analysis of microbial community dynamics under elevated pressure and temperature gradients.
Excerpt from the Book
Introduction
Different microorganisms exist in different strata of the column and that some live in the aerobic and some in anaerobic zones. However, this is really where the discovery begins rather than ends! Explaining the complexity that lies within the depths of the ecosystem allows deeper insights into the microbial world (Rogan et al., 2005).
The Winogradsky column was developed and named after Sergei Winogradsky (1856-1953), a Russian microbiologist. He studied the complex interactions between environmental conditions and microbial activities using soil enrichment to isolate pure bacterial cultures (Madigan et al., 2000)
He studied the microbial organisms inhabiting sulphide-rich black mud ecosystems and pioneered our understanding of chemolithotrophy through his experiments with sulphate and nitrate reducing organisms(Tanner et al., 2000)
Summary of Chapters
Introduction: This chapter provides a background on deep-sea microbiology, the history of the Winogradsky column, and the scientific rationale for studying barophilic microbes and iron corrosion.
Materials and Methods: This section details the practical design of the pressurized Winogradsky apparatus, including the use of specific valves, filters, and monitoring equipment to maintain constant pressure.
Results: This chapter presents the experimental findings, highlighting the formation of biofilms and anaerobic zones, and the identification of microbial species like Desulphovibrio and purple non-sulphur bacteria.
Discussion: The final chapter evaluates the effectiveness of the proposed apparatus and suggests future improvements, such as the use of high-pressure resistant materials for more advanced simulations.
Keywords
Barophile, corrosion, chemostat, enrichment culture, barometer, one way valve, Winogradsky column, deep sea, microorganisms, sulphate-reducing bacteria, biofilm, pressure, iron, chemolithotrophy, marine biology
Frequently Asked Questions
What is the primary focus of this study?
The study focuses on creating an affordable laboratory apparatus to culture barophilic microbes and examine their interaction with iron, particularly regarding deep-sea corrosion.
What are the central thematic fields covered?
The core themes include deep-sea microbial ecology, environmental engineering for culturing, chemolithotrophy, and the mechanisms of anaerobic corrosion in marine environments.
What is the main goal of the research?
The primary goal is to overcome the high costs and complexity of traditional high-pressure chemostats by designing a simple, accessible "lab-make" alternative.
Which scientific methodology is utilized?
The author uses an adapted Winogradsky column setup, incorporating one-way valves, pressure monitoring via an Eco-celli barometer, and specific environmental control measures to simulate deep-sea pressures.
What topics are discussed in the main body?
The main body covers the historical context of high-pressure studies, the specific technical design of the enrichment vessel, and the resulting observations of microbial growth patterns on iron.
Which keywords characterize this work?
Key terms include barophiles, iron corrosion, enrichment culture, Winogradsky column, and marine microbial interactions.
How is the required pressure maintained in the system?
Pressure is maintained by closing the outlet and pumping air into the system through an inlet equipped with a pipette bulb and a one-way valve.
How is the temperature of the deep sea simulated?
The experiment utilizes algal growth chambers equipped with air coolers to replicate the cold environmental conditions typically found in deep-sea strata.
What is the role of the iron rod within the apparatus?
The iron rod serves as a specific substrate to facilitate the enrichment and study of corrosive, deep-sea, sulfate-reducing microbes.
- Quote paper
- T.S. Amar Anand Rao (Author), 2011, Designing a Barophile Enrichment Apparatus to Culture Deep Sea Microbes, Munich, GRIN Verlag, https://www.hausarbeiten.de/document/184271
