Abstract
Desmarestia antarctica Moe & Silva, a new species from the Antarctic Peninsula and the Scotia Arc, is distinguished from all other ligulate members of the genus by the arrangement of zoosporangia, which are produced together with paraphyses in a raised sorus. Among all species in the genus, onlyD. anceps Montagne shares this feature.Desmarestia antarctica is the first species of the genus for which an endophytic gametophyte is demonstrated, the usual host beingCurdiea racovitzae De Wildeman, a red alga of the familyGracilariaceae. The sporophyte contains only a moderate concentration of acid compared to Northern Hemisphere ligulate species, while physodes that probably contain polyphenolic compounds form noticeable speckles and dark margins in preserved plants. Often more than one axis arises from a single holdfast, probably as the result of compounding rather than proliferation.
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References
Anderson, R. J., 1985: Morphological and taxonomic relationships among branched, ligulate members of the genusDesmarestia (Phaeophyceae, Desmarestiales), with special reference to South AfricanD. firma. — Canad. J. Bot.63: 437–447.
Blinks, L., 1951: Physiology and biochemistry of algae. — InSmith, G. M., (Ed.): Manual of phycology, pp. 263–291. — Waltham, Mass.: Chronica Botanica.
Brawley, S. H., Wetherbee, R., 1981: Cytology and ultrastructure. — InLobban, C. S., Wynne, M. J., (Eds.): The biology of seaweeds, pp. 248–299. — Berkeley, Los Angeles: University of California Press.
Chapman, A. R. O., 1972: Morphological variation and its taxonomic implications in the ligulate members of the genusDesmarestia occurring on the west coast of North America. — Syesis5: 1–20.
Drew, E. A., 1977: The physiology of photosynthesis and respiration in some Antarctic marine algae. — Brit. Antarc. Surv. Bull.46: 59–76.
Dube, M. A., Ball, E., 1971:Desmarestia sp. associated with the sea penPtilosarcus gurneyi. — J. Phycol.7: 218–220.
Gain, L., 1912: La flore algologique des régions antarctiques et subantarctiques. — Deuxième Expédition Antarctique Française (1908–1910) commandée par le DrJean Charcot: Sciences naturelles. — Paris: Masson.
Gmelin, S. G., 1768: Historia fucorum. — St. Petersburg.
Hariot, P., 1907: Algues. — Expédition Antarctique Française (1903–1905) commandée par le DrJean Charcot: Botanique. 1 (2). — Paris: Masson.
Kornmann, P., Sahling, P.-K., 1977: Meeresalgen von Helgoland. Benthische Grün-, Braun- und Rotalgen. — Helgoländer Wiss. Meeresuntersuch.29: 1–289.
Lamb, I. M., Zimmerman, M. H., 1977: Benthic marine algae of the Antarctic Peninsula. — Antarc. Res. Ser. (Amer. Geophysical Union)23: 130–229.
Lightfoot, J., 1777: Flora scotica. — London.
Moe, R. L., Delaca, T. E., 1976: Occurrence of macroscopic algae along the Antarctic Peninsula. — Antarc. J. U.S.11: 20–24.
—, 1977: Sporangia in the brown algal genusDesmarestia with special reference to the AntarcticD. ligulata. — Bull. Jap. Soc. Phycol. Suppl.25: 159–167.
—, 1981: Morphology and taxonomy ofHimantothallus (includingPhaeoglossum andPhyllogigas), an Antarctic member of theDesmarestiales (Phaeophyceae). — J. Phycol.17: 15–29.
Nakahara, H., 1984: Alternation of generations of some brown algae in unialgal and axenic cultures. — Sci. Pap. Inst. Algol. Res. Hokkaido Univ.7: 77–194.
Neushul, M., 1965: Diving observations of sub-tidal Antarctic marine vegetation. — Bot. Mar.8: 234–243.
Peters, A. F., Müller, D. G., 1986: Life-history studies—a new approach to the taxonomy of ligulate species ofDesmarestia (Phaeophyceae) from the Pacific coast of Canada. — Canad. J. Bot.64: 2192–2196.
Ramirez, M. E., Müller, D. G., Peters, A. F., 1986: Life history and taxonomy of two populations of ligulateDesmarestia (Phaeophyceae) from Chile. — Canad. J. Bot.64: 2948–2954.
Reinsch, P. F., 1890: Zur Meeresalgenflora von Süd-Georgien. — InNeumayer, G., (Ed.): Die Internationale Polarforschung 1882–1883. Die Deutschen Expeditionen 2, pp. 366–449. — Berlin.
Skottsberg, C., 1907: Zur Kenntnis der subantarktischen und antarktischen Meeresalgen. 1. Phaeophyceen. — Schwed. Südpolar-Exped. 1901–1903, Wiss. Ergebn.4 (6): 1–172.
—, 1921: Botanische Ergebnisse der Schwedischen Expedition nach Patagonien und dem Feuerlande 1907–1909. 8. Marine algae 1.Phaeophyceae. — Kongl. Svenska Vetenskapsakad. Handl.61 (11): 1–56.
—, 1923: Botanische Ergebnisse der Schwedischen Expedition nach Patagonien und dem Feuerlande 1907–1909. 9. Marine algae. 2.Rhodophyceae. — Kongl. Svenska Vetenskapsakad. Handl.63 (8): 1–70.
—, 1953: On two collections of Antarctic marine algae. — Ark. Bot., ser. 2,2: 531–566.
Stackhouse, J., 1809: Tentamen marino-cryptogamicum. — Mém. Soc. Imp. Naturalistes Moscou2: 50–97.
Thompson, T. E., 1988: Acidic allomones in marine organisms. — J. Mar. Biol. Assoc. U.K.68: 499–517.
Vreeland, V., Laetsch, W. M., 1989: Identification of associating carbohydrate sequences with labelled oligosaccharides: localization of alginate gelling subunits in brown algal cell walls. — Planta (in press).
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Dedicated to Prof. DrLothar Geitler on the occasion of the 90th anniversary of his birthday.
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Moe, R.L., Silva, P.C. Desmarestia antarctica (Desmarestiales, Phaeophyceae), a new ligulate Antarctic species with an endophytic gametophyte. Plant Syst Evol 164, 273–283 (1989). https://doi.org/10.1007/BF00940443
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DOI: https://doi.org/10.1007/BF00940443