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Home >> Microbiology >> Microbial Associations >> Microbial Associations Introduction

Microbial Association

Many microbial populations interact and establish associations with each other and with higher organisms.

Usually the association is nutritional, although other benefits may accrue and the association can become crucial to the survival of one or both partners. In 1879, de Bary coined the term ‘symbiosis’ to describe any situation where two different organisms live together.

Confusingly, some biologists then used the same term specifically to mean the association where both the partners benefited.

The term ‘symbiosis’ will be used in its original non-specific sense in this text. There are


Microbial Associations and Fundamentals of their Interactions

Microbial Associations and Fundamentals of their Interactions



many sorts of symbiotic relationship such as mutualism, parasitism, amensalism and competition, predation, protocooperation (synergism) and commensalism between the organisms.

The interactions between the two populations are classified as above according to whether both populations or one of them benefit from the associationship,

or one or both populations are negatively affected

Mutualism and parasitism have been most extensively studied in microbial relationships.

In view of their enormous biological, medical, and agricultural implications,

the mutualism and parasitism will attract greater concentration in this chapter though other will be considered briefly.

 

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