Brown Algae Anatomy Revisited:

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Presentation transcript:

Brown Algae Anatomy Revisited: Cortex and Medulla Figs. 17.15 in Lee 1999 Medulla Cortex

Cell Wall 2 1

Commercial Use 13 12 11

Cell Wall Components I Mg2+ K+ 4 Ca2+ Na+

Cell Wall Components II 3

Cell Wall Components III

PLASTIDS Fig. 12.5 in Graham et al. 2008

Pigments Chlorophyll a 6 Fucoxanthin B Carotene Violaxanthin 27

Pigment Absorption Spectrum 7

Chloroplast Origin 34

Storage Product 3 : 1

(Chrysolaminarin) 11 : 1

Pyrenoid 8

Cell Division

Semi-Closed Mitosis

Cytokinesis

Isomorphic Alternation of Generations (Ectocarpus) Sporophyte (2n) Gametophyte (n) Spore (n) Ectocarpus Ectocarpus Zygote (2n) Gametes (n) Fig. 14.23 in Graham et al. 2008

Gametophyte Sporophyte Unilocular Sporangium 11 Pleurilocular Gametangium 12

Male Gametangium Female Gametangium (e.g., Ectocarpene) Pheremone (= Sex Hormone) (e.g., Ectocarpene)

Mixture of Sexual, Asexual Reproduction: Pleurilocular Sporangia Ectocarpus

Ectocarpus Summary Gametophyte (n) Sporophyte (2n)

Heteromorphic Alternation of Generations (Laminaria) Sporophyte (2n) Gametophyte (n) 14 13 Zygote (2n) Gametes (n)

Unilocular Sporangium Gametophyte (n) Sporophyte (2n) Gametangia

(Air Bladders, Receptacles) Fucus (Air Bladders, Receptacles) 15

Diplontic (2n) Gametes (n) Zygote (2n)

Conceptacles, Ostiole, Female Gametangia, Male Gametangia 16 17 18 Male Gametangia Female Gametangia Gametes (n)

Sporophyte (2n) Gametophyte (n) X

Stramenopiles: Phaeophyceae 18 19

1 http://www.botany.ubc.ca/Biol320/ultra/x7.jpg 2 http://www.ccap.ac.uk/news/images/Eu05_EcCaro_10dai_Ex97_bar20microns_ web_000.jpg 3 http://www.greenspirit.org.uk/resources/cellulose.gif 4 http://www.aapspharmscitech.org/articles/pt0803/pt0803051/pt0803051_figure1.jpg 5 http://www.scielo.br/img/revistas/aabc/v77n4/a07fig04.gif 6 http://www.nature.com/nbt/journal/v18/n8/thumbs/nbt0800_888_F4.gif 7 http://www.angelo.edu/faculty/kboudrea/molecule_gallery/04_aromatics/ chlorophyll-a_01.gif 8 http://www.botany.ubc.ca/Biol320/ultra/iii1.jpg 9 http://www.ne.jp/asahi/marine/algae/Ectocarpus3.jpg 10 http://io.uwinnipeg.ca/~simmons/2152web/2152/l5fig5.jpg 11 http://image40.webshots.com/40/7/24/93/304372493JEvCwL_ph.jpg 12 http://plantphys.info/organismal/lechtml/images/ectocarpusgam.jpg

13 http://www.dkimages.com/discover/previews/889/85001718.JPG 14 http://www.jochemnet.de/fiu/bot4404/Br_Laminaria_gametophyte.jpg 15 http://upload.wikimedia.org/wikipedia/commons/c/c9/Fucus_vesiculosus_ closeup.jpg 16 http://botit.botany.wisc.edu/images/130/Protista_I/Phaeophyta_Images/ Fucus_Images/Conceptacle_receptacle_MC.low.jpg 17 http://botit.botany.wisc.edu/courses/botany_130/Diversity/ Protista/images/Oogonia.jpg 18 http://api.ning.com/files/y8l6PSTl4ba9-W6ejDMaJKFF30sF6fB6Typ Nupyxdt73eX6CpKCTnrU3WH5-0i1SFxfWQwdcA4KgW2-8xnnpLsU9hHP wX*jz/kelpfish.jpg 27 http://www.holocaust-history.org/auschwitz/zyklonb/Sample3-diatomaceousearth.jpg