Green alga (Haematococcus pluvialis), SEM

Green alga (Haematococcus pluvialis), SEM

C032/1294 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 25.0MB

Downloadable file size: 568.9KB

Price image Pricing

Please login to use the price calculator


Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Coloured scanning electron micrograph (SEM) of green alga (chlorophyte) vegetative stage (Haematococcus pluvialis). A unicellular, microscopic green alga that has two flagella. It contains a single, cup-shaped chloroplast, with several pyrenoids. This alga occurs in many different aquatic environments including fresh and brackish water. It is believed to be the world's richest known source of astaxanthin. Astaxanthin is a natural carotenoid pigment and a biological antioxidant. When environmental conditions become adverse (i.e. when nutrients start becoming scarce, the water environment starts to dry out and the algae are increasingly exposed to direct sunlight), they enter a resting phase (cyst phase) that allows them to survive for prolonged periods, until the environment becomes much more favourable for growth. In the resting phase the alga accumulates high amounts of astaxanthin. Magnification: x600 when shortest axis printed at 25

Release details: Model release not required. Property release not required.

Keywords: 99177c, alga, algae, antioxidant, aquatic, astaxanthin, brackish, carotenoid, chlamydomonadales, chlorophyceae, chlorophyta, chlorophyte, colored, coloured, cyst, electron, eukaryote, false-colored, false-coloured, flagella, flagellum, fresh, green, haematococcaceae, haematococcus, micrograph, oleoresin, phase, phytoplankton, pigment, plankton, pluvialis, protista, protozoa, protozoan, resting, scanning, sem, stage, vegetative, water

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.