Georgii Frantsevich Gause
Encyclopedia
Georgii Frantsevich Gause, was a Russian
Russians
The Russian people are an East Slavic ethnic group native to Russia, speaking the Russian language and primarily living in Russia and neighboring countries....

 biologist who proposed the competitive exclusion principle
Competitive exclusion principle
In ecology, the competitive exclusion principle, sometimes referred to as Gause's law of competitive exclusion or just Gause's law, is a proposition which states that two species competing for the same resources cannot coexist if other ecological factors are constant...

, fundamental to the science of ecology
Ecology
Ecology is the scientific study of the relations that living organisms have with respect to each other and their natural environment. Variables of interest to ecologists include the composition, distribution, amount , number, and changing states of organisms within and among ecosystems...

. He would devote most of his later life to the research of antibiotic
Antibiotic
An antibacterial is a compound or substance that kills or slows down the growth of bacteria.The term is often used synonymously with the term antibiotic; today, however, with increased knowledge of the causative agents of various infectious diseases, antibiotic has come to denote a broader range of...

s.

Early life

Gause was born December 27, 1910 in Moscow
Moscow
Moscow is the capital, the most populous city, and the most populous federal subject of Russia. The city is a major political, economic, cultural, scientific, religious, financial, educational, and transportation centre of Russia and the continent...

, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

 to parents Frants Gause, a professor of architecture at Moscow State University
Moscow State University
Lomonosov Moscow State University , previously known as Lomonosov University or MSU , is the largest university in Russia. Founded in 1755, it also claims to be one of the oldest university in Russia and to have the tallest educational building in the world. Its current rector is Viktor Sadovnichiy...

, and Galina Gause, an industrial worker at an automotive steel plant. As a boy and into his teenage years, Gause and his extended family took summer vacations to the Caucasus Mountains
Caucasus Mountains
The Caucasus Mountains is a mountain system in Eurasia between the Black Sea and the Caspian Sea in the Caucasus region .The Caucasus Mountains includes:* the Greater Caucasus Mountain Range and* the Lesser Caucasus Mountains....

 in southern Russia for months at a time. Although his family was not wealthy, they were allowed these respites because his father, being a government architect, helped to build many structures at the university. It was during these trips to the Caucasus Mountains that Gause grew fond of nature, often chronicling the lives and behavior of several organisms including the Siberian Grasshopper (Aeropus sibiricus).
The Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n university system requires a faculty advisor for all undergraduate and graduate students. His chosen advisor for his undergraduate career was Vladimir Alpatov. Alpatov, in the mid 1920s, was very impressed by the work of Raymond Pearl
Raymond Pearl
Raymond Pearl was an American biologist, regarded as one of the founders of biogerontology. He spent most of his career at Johns Hopkins University in Baltimore....

, a U.S. demographer who became well-known through his advocacy of the logistic curve. Alpatov brings back a fascination for American science that is very influential on Gause. Gause argued that field work, with too many variables, could never adequately explain this relationship and only in the simplified laboratory environment, where variables could be controlled, would it be possible to determine precisely how a specific ecological factor influences a population. Eager to pursue this mechanistic direction of study and influenced by his advisor, Gause contacted Pearl to see if the American would take on another Russian student. He applied for a fellowship through the Rockefeller Foundation
Rockefeller Foundation
The Rockefeller Foundation is a prominent philanthropic organization and private foundation based at 420 Fifth Avenue, New York City. The preeminent institution established by the six-generation Rockefeller family, it was founded by John D. Rockefeller , along with his son John D. Rockefeller, Jr...

 but was denied, perhaps because he was only 22 years old. He then published The Struggle for Existence in 1934 to improve his chances but he was still denied.
Gause earned his BSc
BSC
BSC is a three-letter abbreviation that may refer to:Science and technology* Bachelor of Science , an undergraduate degree* Base Station Controller, part of a mobile phone network; see: Base Station subsystem...

 at Moscow University in 1931 and his DBiolSc in 1940.

The struggle for existence by competitive exclusion

In 1932, Gause published what has become known as the competitive exclusion principle
Competitive exclusion principle
In ecology, the competitive exclusion principle, sometimes referred to as Gause's law of competitive exclusion or just Gause's law, is a proposition which states that two species competing for the same resources cannot coexist if other ecological factors are constant...

, based on experimental work done with mixed cultures of both yeast and Paramecium
Paramecium
Paramecium is a group of unicellular ciliate protozoa, which are commonly studied as a representative of the ciliate group, and range from about 0.05 to 0.35 mm in length. Simple cilia cover the body, which allow the cell to move with a synchronous motion at speeds of approximately 12 body...

 species. The principle asserts that no two species with similar ecological niche
Ecological niche
In ecology, a niche is a term describing the relational position of a species or population in its ecosystem to each other; e.g. a dolphin could potentially be in another ecological niche from one that travels in a different pod if the members of these pods utilize significantly different food...

s can coexist in a stable equilibrium, meaning that when two species compete for exactly the same requirements, one will be slightly more efficient than the other and will reproduce at a higher rate as a result. The fate of the less efficient species is local extinction.

The search for new antibiotics

Gause focuses his research on practical applications for his new principle. Working with a strain of Bacillus brevis
Bacillus brevis
Aneurinibacillus migulanus , formerly known as Bacillus brevis is a Gram-positive aerobic spore-forming bacillus commonly found in soil, air, water, and decaying matter. It is rarely associated with infectious diseases...

, he noticed an inhibition on the growth of Staphylococcus aureus
Staphylococcus aureus
Staphylococcus aureus is a facultative anaerobic Gram-positive coccal bacterium. It is frequently found as part of the normal skin flora on the skin and nasal passages. It is estimated that 20% of the human population are long-term carriers of S. aureus. S. aureus is the most common species of...

when the two were in mixed culture. The inhibition of S. aureus was caused by a metabolite
Metabolite
Metabolites are the intermediates and products of metabolism. The term metabolite is usually restricted to small molecules. A primary metabolite is directly involved in normal growth, development, and reproduction. Alcohol is an example of a primary metabolite produced in large-scale by industrial...

 produced by B. brevis. Gause isolated this product and named it Gramicidin S
Gramicidin S
Gramicidin S or Gramicidin Soviet is an antibiotic effective against some Gram positive and Gram negative bacteria as well as some fungi. It is a derivative of gramicidin, produced by the Gram positive bacterium Bacillus brevis...

. The antibiotic went into mass production during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 and saved many Russian lives. For his part in its development, Gause was awarded the Stalin Prize and named director of the Institute for New Antibiotics in Moscow
Moscow
Moscow is the capital, the most populous city, and the most populous federal subject of Russia. The city is a major political, economic, cultural, scientific, religious, financial, educational, and transportation centre of Russia and the continent...

 in 1946. As director, Gause helped to design and manufacture many novel antibiotics of which a few had anti-tumor capacities.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK