Slide 1

The Eukaryotes 12c: Algae Slide 2 Note: this is just a few of the algal groups Slide 3 Chlorophyta = green algae Chlamydomonas spp. Chlamydomonas nivalis (6.6) snow algae Slide 4 Marine green algae Ulva = sea lettuce Alternation of generation adult Slide 5 Codium fragile = dead mans fingers Other local marine green algae Enteromorpha Slide 6 Spirogyra spp. (1.6a) Trebouxia spp. Slide 7 Protothecosis, caused by Prototheca wickerhamii or P. zopfii, is a rare infection in the US, mostly from the southwest (seen worldwide but still is rare). Treatment has not been standardized but amphotericin B & ketoconazole have been used. On skin Slide 8 Rhodophyta = Red algae Chondrus crispus = irish moss carrageenan Gracilaria (& Gelidium) agar Slide 9 Porphyra = nori, laver Slide 10 Antithamnion Palmaria palmata Slide 11 Phaeophyta = brown algae Stramenopiles? Slide 12 Egregia = feather boa kelp Kelp harvesting: a local industry alginic acid/alginate Macrocystis = giant kelp Undaria = wakame Slide 13 Laminaria One use Sterilized Laminaria digitatum & L. japonicum is inserted in its dry state (top of image) into the cervix. Mucopolysaccharides absorb water gradually, and the stick expands within the cervix. The lower laminaria stick shows the increase in size. The cervix dilates and the contents of the uterus can be more readily removed (such as in curettage). Slide 14 Bacillariophyta = diatoms centric pennate arrangement Stephanodiscus (1.6b) Slide 15 Slide 16 Diatom cell division Slide 17 -> ASP Slide 18 Oomycota = water molds biflagellated spores sexual structures Slide 19 1845 Phytophthora infestans Late blight of potato Phytophthora ramorum sudden oak death