2018 Small World in Motion Competition

Nitella sp. (green algae), cytoplasmic streaming

Charles B. Krebs

Affiliation
Charles Krebs Photography
Issaquah, Washington, USA
Technique

Brightfield, Differential Interference Contrast

Magnifaction
5x, 10x, 40x (objective lens magnification)

Nitella is a green algae with very large cells within which active fluid motion can be observed. This flow helps with the movement of nutrients, organelles and genetic material. It was first described in 1774. The causes for this motion are complex, and while much has been learned, the phenomenon is still not fully understood.