MICROBIAL INTERACTION:

MICROBIAL INTERACTION:

Interaction is a kind of action that occurs as two or more objects have an effect upon one another. The idea of a two-way effect is essential in the concept of interaction.

MICROBIAL INTERACTION:

Organisms do not exist alone in nature but in a matrix (atmosphere) of other organism of many species.

CLASSIFICATION OF MICROBIAL INTERACTION:

Positive interaction:

1.     Neutralism

2.     Commensalism

3.     Synergism

4.     Mutualism

Negative interaction:

1.     Competition

2.     Amensalism

3.     Parasitism

4.     Predation

Positive microbial interaction:

1. Neutralism (no interaction)

Implies lack of interaction, in this both the species are unaffected.

Example: Rabbits, deer, frogs, live together in grassland with no interaction between them.

2. Commensalism:

In commensalism one species benefits and the other remains unaffected.

Example: the removal of oxygen from a habitat, as a result of the metabolic activities of a population of facultative anaerobes, creates an environment that is favorable for the growth of obligately anaerobic population.

3. Synergism:

Both the populations’ benefits

Example: bacteria live in the intestines of humans, the human can not digest all of the food that it eats. The bacteria eat the food that the human can not digest and partially digest it. The bacteria benefit by getting food, and the human benefits by being able to digest the food it eats. 

4.Mutualism:

Both species benefits same as synergism.

Negative microbial interaction:

1.     Competition: Neither species benefits.

Example: At low temperature, psychrophilic organism grows and under moderately high temperature mesophilic organism grow. At high substrate concentration, competition occur.

2.     Amensalism: one species benefit, the other is affected.

Example: Production of oxygen by algae may alter the habitat that can prove detrimental to obligate anaerobes.

3.    Parasitism: one species benefit the other is harmed.

Example: Fleas Harm Their Hosts Such As Dogs By Biting Their Skin, Sucking Their Blood, And Causing Them To Itch.

4.     Predation: it is another kind of relationship wherein one organism engulfs the other.

Example: Predator Engulfs The Prey.