Yellow-green algae

Yellow-green algae
	Examples of xanthophytes (repair the unequal flagella in the cells)
Scientific classification
Domain:	Eukaryota
Clade:	Diaphoretickes
Clade:	SAR
Phylum:	Ochrophyta
Class:	Xanthophyceae; Allorge, 1930, emend. Fritsch, 1935
Synonyms
	Heterokontae Luther, 1899; Heterochloridia Pascher, 1912; Tribophyceae Hibberd, 1981; Heteromonadida Leedale, 1983; Xanthophyta Hibberd, 1990;

Yellow-green algae are the Xanthophyceae (xanthophytes).

They are a group of heterokont algae. Most live in fresh water, but some live in marine and soil habitats. They vary from single-celled flagellates to simple colonial and filamentous forms.

Xanthophyte chloroplasts contain the photosynthetic pigments chlorophyll a, chlorophyll c, β-carotene, and the carotenoid diadinoxanthin.^[7]

Unlike other heterokonts, their chloroplasts do not have fucoxanthin, which accounts for their lighter colour. Xanthophyte cell walls are made of cellulose and hemicellulose.^[7] They may be the closest relatives of the brown algae.

References

↑ Allorge, P (1930). "Heterocontées ou Xanthophycées?". Rev. Alg. 5: 230.
↑ Fritsch, F.E. (1935) The Structure and Reproduction of the Algae. Volume I. Introduction, Chlorophyceae, Xanthophyceae, Chrysophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chloromonadineae, Euglenineae, Colourless Flagellata. Cambridge University Press, Cambridge.^{[page needed]}
↑ Lüther, A. (1899). "Über Chlorosaccus eine neue Gattung der Süsswasseralgen". Bihang Til Kongliga Svenska Vetenskaps-Akademiens Handlingar. 24: 1–22. OCLC 178060545.
↑ Hibberd, D. J. (February 1981). "Notes on the taxonomy and nomenclature of the algal classes Eustigmatophyceae and Tribophyceae (synonym Xanthophyceae)". Botanical Journal of the Linnean Society. 82 (2): 93–119. doi:10.1111/j.1095-8339.1981.tb00954.x.
↑ Leedale, G.F. (1985). "Order 5, Heteromonadida Leedale, 1983". In Lee, John J.; Hutner, Seymour Herbert; Bovee, Eugene C. (eds.). An illustrated Guide to Protozoa. Lawrence, Kansas: Society of Protozoologists. pp. 70–.^{[page needed]}
↑ Hiberd, D. J. (1990). "Phylum Xanthophyta". In Margulis, L.; Corliss, J. O.; Melkonian, M.; et al. (eds.). Handbook of Protoctista. Boston, Massachusetts, USA: Jones and Bartlett Publishers. pp. 686–97.
↑ ^7.0 ^7.1 Stace, Clive A. (1991). Plant taxonomy and biosystematics. Cambridge University Press. ISBN 978-0-521-42785-2.

[1] Allorge, P (1930). "Heterocontées ou Xanthophycées?". Rev. Alg. 5: 230.

[2] Fritsch, F.E. (1935) The Structure and Reproduction of the Algae. Volume I. Introduction, Chlorophyceae, Xanthophyceae, Chrysophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chloromonadineae, Euglenineae, Colourless Flagellata. Cambridge University Press, Cambridge.^{[page needed]}

[3] Lüther, A. (1899). "Über Chlorosaccus eine neue Gattung der Süsswasseralgen". Bihang Til Kongliga Svenska Vetenskaps-Akademiens Handlingar. 24: 1–22. OCLC 178060545.

[4] Hibberd, D. J. (February 1981). "Notes on the taxonomy and nomenclature of the algal classes Eustigmatophyceae and Tribophyceae (synonym Xanthophyceae)". Botanical Journal of the Linnean Society. 82 (2): 93–119. doi:10.1111/j.1095-8339.1981.tb00954.x.

[5] Leedale, G.F. (1985). "Order 5, Heteromonadida Leedale, 1983". In Lee, John J.; Hutner, Seymour Herbert; Bovee, Eugene C. (eds.). An illustrated Guide to Protozoa. Lawrence, Kansas: Society of Protozoologists. pp. 70–.^{[page needed]}

[6] Hiberd, D. J. (1990). "Phylum Xanthophyta". In Margulis, L.; Corliss, J. O.; Melkonian, M.; et al. (eds.). Handbook of Protoctista. Boston, Massachusetts, USA: Jones and Bartlett Publishers. pp. 686–97.

[Stace-7] 7.0 ^7.1 Stace, Clive A. (1991). Plant taxonomy and biosystematics. Cambridge University Press. ISBN 978-0-521-42785-2.

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