Thus, the name spores and endospores are synonymously used to mean the same thing in this section.Įndospores therefore are formed by certain groups of bacteria during the process of sporulation ( Figure 1), and they connote the lifeless or inactive but viable states of bacteria. Spores are generally the resting forms of bacteria, and they typically continue living as endospores in the environment until when normal growth conditions are formally restored. In such harsh environmental conditions, bacteria transform into a dormant state from their original vegetative (growing) state to form spores. They are formed by bacteria especially the Gram-positive organisms when their environmental becomes too harsh for survival such as the loss of nutrients or food scarcity in their normal habitat. Spore formation is a unique characteristic of bacteria and fungi. Spores are the resistant inactive structures formed by some prokaryotic and eukaryotic organisms.
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