Tetrapora (plant)

Tetrapora is a genus of green algae belonging to the family Tetrasporaceae. It is characterized by its palmelloid colonies, meaning that the cells are embedded within a gelatinous matrix. These colonies are often macroscopic and visible to the naked eye.

Description: Tetrapora colonies are typically irregular in shape, sometimes spherical, and can vary in size from a few millimeters to several centimeters. The cells within the matrix are spherical or slightly oval, and each cell contains a single chloroplast with one or more pyrenoids (structures involved in starch storage). Flagella are present in the motile stages of the life cycle, but absent in the vegetative, colony-forming stage. Reproduction occurs asexually through zoospores (motile spores) or fragmentation of the colony. Sexual reproduction, if present, is not well-documented in all species.

Habitat and Distribution: Tetrapora species are commonly found in freshwater habitats, such as ponds, lakes, ditches, and slow-moving streams. They are distributed worldwide, although the specific distribution of individual species may vary.

Taxonomy: The taxonomic classification of Tetrapora has been subject to revisions over time. It belongs to the division Chlorophyta (green algae), class Chlorophyceae, and order Chlamydomonadales.

Ecological Significance: Tetrapora serves as a primary producer in freshwater ecosystems, contributing to the food web. Its gelatinous colonies can also provide habitat for small invertebrates. The presence and abundance of Tetrapora can be influenced by water quality parameters, such as nutrient levels.