Growth of organisms using AUTOTROPHIC PROCESSES for obtaining nutrients and chemotrophic processes for obtaining a primary energy supply. Chemotrophic processes are involved in deriving a primary energy supply from exogenous chemical sources. Chemotrophic autotrophs (chemoautotrophs) generally use inorganic chemicals as energy sources and as such are called chemolithoautotrophs. Most chemoautotrophs live in hostile environments, such as deep sea vents. They are mostly BACTERIA and ARCHAEA, and are the primary producers for those ecosystems.

Descriptor ID	D052837
MeSH Number(s)	G02.111.071.314 G03.087.314
Concept/Terms	Chemoautotrophic Growth Chemoautotrophic Growth Growth, Chemoautotrophic Chemolithotrophic Growth Growth, Chemolithotrophic Chemolithoautotrophic Growth Chemolithoautotrophic Growth Growth, Chemolithoautotrophic Chemolithoautotrophy Chemolithoautotrophy Chemoautotrophy Chemoautotrophy Chemolithotrophy

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