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Plant Systematics and Evolution

, Volume 141, Issue 3–4, pp 299–311 | Cite as

The sporoderm ultrastructure inPersea, Nectandra, Hernandia, Gomortega and some other Lauralean genera

  • Michael Hesse
  • Klaus Kubitzki
Article

Abstract

The sporoderm ultrastructure of some genera in theLauraceae, Hernandiaceae andGomortegaceae (Laurales) was re-investigated. This and a comparison with some Zingiberalean genera (Canna, Heliconia, Strelitzia) leads to a re-interpretation of the peculiar pollen wall structure of the Lauralean families recently described in this journal (Kubitzki 1981). Their pollen is now interpreted as being nearly exine-less: The (sporopollenin-containing) exine consists only of a thin, skin-like, coherent layer ornamented with spines and globules. The (cellulosic) intine is composed of an unstratified inner and a thick, channelled outer layer. The striking similarity of the pollen ultrastructure between theLaurales studied and some members of theZingiberales can be interpreted as an example of convergent evolution in angiosperm pollen walls.

Key words

Laurales Persea Nectandra Hernandia Gomortega Pollen morphology sporoderm exine intine convergent evolution 

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References

  1. Brown, C. A., 1960: Palynological Techniques. — Baton Rouge: published by the author.Google Scholar
  2. Heslop-Harrison, J., 1976: The adaptive significance of the exine. — InFerguson, I. K., Muller, J., (Eds.): The Evolutionary Significance of the Exine, pp. 27–37. — Linn. Soc. Symp. Series1. — London: Academic Press.Google Scholar
  3. Hesse, M., Waha, M., 1983: The fine structure of the pollen wall inStrelitzia reginae (Musaceae). — Pl. Syst. Evol.141, 285–298.Google Scholar
  4. Kress, W. J., Stone, D. E., Sellers, S. C., 1978: Ultrastructure of exine-less pollen:Heliconia (Heliconiaceae). — Amer. J. Bot.65, 1064–1076.Google Scholar
  5. Kubitzki, K., 1969: Monographie der Hernandiaceen. — Bot. Jahrb.89, 78–148.Google Scholar
  6. —, 1981: The tubular exine ofLauraceae andHernandiaceae, a novel type of exine structure in seed plants. — Pl. Syst. Evol.138, 139–146.Google Scholar
  7. Le Thomas, A., 1980: Ultrastructural characters of the pollen grains of AfricanAnnonaceae and their significance for the phylogeny of primitive angiosperms. — Pollen et Spores22, 267–342.Google Scholar
  8. Muller, J., 1979: Form and function in angiosperm pollen. — Ann. Missouri Bot. Garden66, 593–632.Google Scholar
  9. —, 1981: Exine architecture and function in someLythraceae andSonneratiaceae. — Rev. Palaeobot. Palynol.35, 93–123.Google Scholar
  10. Pettitt, J. M., 1980: Reproduction in Seagrasses: nature of the pollen and receptive surface of the stigma in theHydrocharitaceae. — Ann. Bot.45, 257–271.Google Scholar
  11. —, 1981: Reproduction in Seagrasses: pollen development inThalassia hemprichii, Halophila stipulacea andThalassodendron ciliatum. — Ann. Bot.48, 609–622.Google Scholar
  12. —, Ducker, S. C., Knox, R. B., 1978:Amphibolis pollen has no exine. — Helobiae Newsletters2, 19–22.Google Scholar
  13. Praglowski, J., 1971: Reticulate and allied exines. — Grana11, 79–86.Google Scholar
  14. Sedgley, M., 1979: Structural changes in the pollinated and unpollinated avocado stigma and style. — J. Cell. Sci.38, 49–60.PubMedGoogle Scholar
  15. Skvarla, J. J., Rowley, J. R., 1970: The pollen wall ofCanna and its similarity to the germinal apertures of other pollen. — Amer. J. Bot.57, 519–529.Google Scholar
  16. Stone, D. E., Sellers, S. C., Kress, W. J., 1979: Ontogeny of exineless pollen inHeliconia, a banana relative. — Ann. Missouri Bot. Garden66, 701–730.Google Scholar
  17. —, —, —, 1981: Ontogenetic and evolutionary implications of a neotenous exine inTapeinochilos (Zingiberales:Costaceae) pollen. — Amer. J. Bot.68, 49–63.Google Scholar
  18. Straka, H., 1975: Pollen- und Sporenkunde. — Grundbegriffe der modernen Biologie13. — Stuttgart: Gustav Fischer.Google Scholar
  19. VanCampo. M., 1978: La face interne de l'exine. — Rev. Palaeobot. Palynol.26, 301–311.Google Scholar
  20. Wodehouse, R. P., 1932: Tertiary pollen. I. Pollen of the living representatives of the Green River flora. — Bull. Torrey Bot. Club59, 313–340.Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Michael Hesse
    • 1
  • Klaus Kubitzki
    • 2
  1. 1.Institut für Botanik und Botanischer GartenUniversität WienWienÖsterreich
  2. 2.Institut für Allgemeine Botanik und Botanischer GartenUniversität HamburgHamburg 52, Bundesrepublik Deutschland

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