Spores are highly resistant structures, which can withstand harsh conditions like high temperature, pH, salt concentration etc. Spores exist in variable shapes, sizes and numbers. The process of spore formation is called sporulation, and the phenomena where it germinates to form new vegetative bodies is called spore germination.

Spores can be classified in several ways such as by their spore producing structure, function, origin during life cycle, and mobility. Below is a table listing the mode of classification, name, identifying characteristic, examples, and images of different spore species.

Jul 25, 2017 · Spore is metabolically dormant structure produced during unfavorable condition by the process called sporulation; Sporulation occur during late log phase or early stationary phase; Under favorable condition spores germinate to give vegetative cell. Size: 0.2 µm; Spore are resistant to nutrition starvation, temperature, extreme pH, antibiotics etc

spore, a reproductive cell capable of developing into a new individual without fusion with another reproductive cell. Spores thus differ from gametes , which are reproductive cells that must fuse in pairs in order to give rise to a new individual.

The basic structure of spores and morphological stages are conserved among all spore-forming bacteria. The spore structures contribute to the dormant microorganism to sustain in a variety of environmental stresses like high temperature, pressure, extreme pH, and radiation until the spore finds itself in more favorable condition for vegetative ...

Spore develops from a portion of protoplasm (forespore) near one end of the cell. The remaining part of the cell is called sporangium. Spore-forming bacilli form endospores during unfavorable conditions (especially when carbon and nitrogen become depleted or unavailable).

Both the coat and the exosporium have roles in protection of the spore and in its environmental interactions. Assembly of both structures is a function of the mother cell, one of two cellular compartments of the developing sporangium.

May 28, 2021 · Spore wall: It is the innermost layer surrounding the core and lies outside the core cytoplasmic membrane. It contains normal peptidoglycan and becomes the cell wall of the germinating vegetative cell.

Jul 18, 2024 · Bacterial spores are latent, highly resistant structures (that is, without metabolic activity) that form in response to adverse environmental conditions. They help the survival of organisms in adverse environmental conditions; they have no role in reproduction. Spores of fungi have a reproductive role.

For example, Santo and Doi (3) provided beautiful thin-section electron microscopy images that revealed the details of spore internal structure and the changes that occur during germination and outgrowth, as the spore returns to vegetative growth.