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The pollen metamorphosis phenomenon in Panax ginseng, Aralia elata and Oplopanax elatus; an addition to discussion concerning the Panax affinity in Araliaceae

Published online by Cambridge University Press:  01 February 2009

Arkadiy A. Reunov*
Affiliation:
Department of Embryology, A.V. Zhirmunskiy Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 17 Paltchevskiy Street, Vladivostok 690041, Russia. Department of Embryology, A.V. Zhirmunskiy Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 17 Paltchevskiy Street, Vladivostok 690041, Russia.
Galina D. Reunova
Affiliation:
Group of Plant Molecular Genetics, Institute of Biology and Soil Science, Far Eastern Branch of Russian Academy of Sciences, 159 Stoletiya Street, Vladivostok, 690022, Russia.
Yana N. Alexandrova
Affiliation:
Department of Embryology, A.V. Zhirmunskiy Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 17 Paltchevskiy Street, Vladivostok 690041, Russia.
Tamara I. Muzarok
Affiliation:
Department of Biotechnology, Institute of Biology and Soil Science, Far Eastern Branch of Russian Academy of Sciences, 159 Stoletiya Street, Vladivostok, 690022, Russia.
Yuriy N. Zhuravlev
Affiliation:
Department of Biotechnology, Institute of Biology and Soil Science, Far Eastern Branch of Russian Academy of Sciences, 159 Stoletiya Street, Vladivostok, 690022, Russia.
*
All correspondence to: A.A. Reunov. Department of Embryology, A.V. Zhirmunskiy Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 17 Paltchevskiy Street, 690041, Russia. Tel: +7 4232 311143. Fax: +7 4232 310900. e-mail: [email protected]

Summary

To find more morphological characteristics useful for discussion on aralian or non-aralian Panax affinity, pollen morphological diversity was comparatively analysed in P. ginseng, Aralia elata and Oplopanax elatus collected during their pollination periods. In the anthers of both the buds and open flowers, the pollen average diameter varied between some species-specific maximum and minimal measurement. However, the larger pollen grains were typically found in the buds whereas the smaller pollen prevailed in the open flowers, testifying to the pollen size diminution during anther maturation. Based on this finding, the subsequent examination of pollen according to size decrease was put into operation as a method of pollen modification for the study. The structural mechanisms of pollen metamorphosis were identified as not being species specific but rather universal. These mechanisms are suggested to be the shrinkage of the pollen vegetative cytoplasm, the intine enlargement, the deepening of three colporate apertures provided by exine sunken into enlarged intine areas, the aperture accretion as well as the transformation of the exine from thick/sculptured into thin/less sculptured. During ‘size-reducing metamorphosis’, the pollen grains changed dramatically, going through a species-specific set of intermediate morphs to the final species-specific morphotype. In P. ginseng this morphotype is round (diameter is about 16 μm), in A. elata it is round with a single projection (diameter is about 15 μm) and in O. elatus it is ovoid with a single projection (average diameter is about 18 μm). In addition, every species is peculiar in having the unique vegetative cytoplasm inclusions and individual construction of the largest pollen exine. From a phylogenetic perspective, these findings presumably add support to the option of equal remoteness of P. ginseng from A. elata and O. elatus. The characteristics found seem to be suitable for examination of Panax affinity, by the subsequent study of more Araliaceae representatives.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2008

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References

Artyukova, E.V., Gontcharov, A.A., Kozyrenko, M.M., Reunova, G.D. & Zhuravlev, Yu.N. (2005). Phylogenetic relationships of the Far Eastern Araliaceae inferred from ITS sequences of nuclear rDNA. Russ. J. Genetics 41, 649–58.CrossRefGoogle Scholar
Bai, D., Brandle, J. & Reeleder, R. (1997). Genetic diversity in North American ginseng (Panax quinquefolius L.). grown in Ontario detected by RAPD analysis. Genome 40, 111–5.CrossRefGoogle ScholarPubMed
Bentham, G. (1867). Araliaceae. In Genera Plantarum, (eds. Bentham, G. & Hooker, J.D.), vol. 1, pp. 931–47. London: Lovell Reeve and Co.Google Scholar
Calestani, V. (1905). Contributo alla sistematica delle Ombrellifere d'Europa. Webbia 1, 89280.CrossRefGoogle Scholar
Cooper, R.L, Osborn, J.M. & Philbrick, C.T. (2000). Comparative pollen morphology and ultrastructure of the Callitrichaceae. Amer. J. Bot. 87, 161–75.CrossRefGoogle ScholarPubMed
Cruse-Sanders, J.M. & Hamrick, J.L. (2004). Genetic diversity in harvested and protected populations of wild American ginseng, Panax quinquefolius L. (Araliaceae). Amer. J. Bot. 91, 540–8.CrossRefGoogle ScholarPubMed
Erdtman, G. (1966). Pollen Morphology and Plant Taxonomy, Angiosperms. Stockholm: Almquist and Wiksell.Google Scholar
Harms, H. (1898). Araliaceae. In Die natürlichen Planzenfamilien III. vol. 8. (eds. A. Engler & K. Prantl), pp. 162Leipzig: W. Engelmann.Google Scholar
Henwood, M.J. (1991). Pollen morphology of Polyscias (Araliaceae)., the Malesian and Australian species. Grana 30, 559–76.CrossRefGoogle Scholar
Hong, D.Y.Q., Lau, A.J., Leo, C.L, Liu, X.K., Yang, C.R., Koh, H.L. & Hong, Y. (2005). Genetic diversity and variation of saponin contents in Panax notoginseng roots from a single farm. J. Agric. Food Chem. 53, 8460–7.CrossRefGoogle ScholarPubMed
Hutchinson, J. (1967). The Genera of Flowering Plants, vol. 2. London: Oxford University Press.Google Scholar
Grushvitsky, I.V. (1961). Panax. Aspects of Biology. Leningrad: Nauka Press, (in Russian).Google Scholar
Grushvitsky, I.V., Skvortsova, N.T., Ha, T.D. & Arnautov, N.N. (1985). Konspect semeistva Araliaceae Juss. flori Vietnama. In Novosti systematici Vistsih Rastenii, vol. 22. pp. 153–91. Leningrad: Nauka Press (in Russian).Google Scholar
Koren, O.G., Krylach, T.Yu., Zaytseva, Yu.A. & Zhuravlev, Yu.N. (1998). Floral biology and embryology of Panax ginseng C.A. Meyer. In Ginseng in Europe, (eds. Weber, H.C., Zeuske, D. & Imhof, S.), pp. 221–31. Marburg. Philipps Universität.Google Scholar
Koren, O.G., Potenko, V.V. & Zhuravlev, Yu.N. (2003). Inheritance and variation of allozymes in Panax ginseng C.A. Meyer (Araliaceae). Int. J. Plant Sci. 164, 189–95.CrossRefGoogle Scholar
Lanza, B., Marsilio, V. & Martinelli, N. (1996). Olive pollen ultrastructure, characterization of exine pattern through image analysis-scanning electron microscopy (IA-SEM). Scientia Horticulturae 65, 283–94.CrossRefGoogle Scholar
Lee, C. & Wen, J. (2004). Phylogeny of Panax using chloroplast trnC-trnD intergenic region and the utility of trnC-trnD in interspecific studies of plants. Mol. Phylogen. Evol. 31, 894903.CrossRefGoogle ScholarPubMed
Petrovskaya-Baranova, T.P. (1959). Embryological investigation of ginseng. Embryological investigation of angiosperm. In Works of the State Botanical Garden in Moscow, vol. 4, pp. 211–25. (in Russian). Moscow: Nauka Press.Google Scholar
Plunkett, G.M., Wen, J. & Lowry, P.P. II (2004). Infrafamilial classification and characters in Araliaceae, insights from the phylogenetic analysis of nuclear (ITS) and plastid (trnL-trnF) sequence data. Plant Syst. Evol. 245, 139.CrossRefGoogle Scholar
Proceedings of the International Ginseng Conference (1994). In The Challenges of the 21st Century, (eds Bailey, W.G, Whitehead, C., Proctor, J.T.A. & Kyle, J.T.). pn: Fraser University.Google Scholar
Proceedings of the 1st European Ginseng Congress (1998). In Ginseng in Europe (eds Weber, H.C., Zeuske, D. & Imhof, S.). Marburg Philipps Universität.Google Scholar
Proceedings of the 8th International Symposium on Ginseng (2002). Advances in Ginseng Research, (ed. Baek, Nam-In). Seoul: Korean Society of Ginseng.Google Scholar
Proceeding of the 9th International Symposium on Ginseng (2006). Advances in Ginseng Research, (eds. Oh, S., & Choi, K-T.). Geumsan: Korean Society of Ginseng.Google Scholar
Schols, P., Furness, C.A., Wilkin, P., Smets, E., Cielen, V. & Huysmans, S. (2003). Pollen morphology of Dioscorea (Dioscoreaceae) and its relation to systematics. Bot. J. Linnean Soc. 143, 375–90.CrossRefGoogle Scholar
Shang, C.B. & Callen, D. (1988). Pollen morphology of the family Araliaceae in China. Bull. Bot. Res. (China) 8, 1335 (in Chinese with English summary).Google Scholar
Stafford, P. & Knapp, S. (2006). Pollen morphology and systematics of the zygomorphic-flowered nightshades (Solanaceae; Salpiglossideae sensu D'Arcy, 1978 and Cestroideae sensu D'Arcy, 1991, pro parte): a review. Systematics Biodiversity 4, 173201.CrossRefGoogle Scholar
Takhtadjan, A.L. (1987). The System of Magnoliophitov. Leningrad: Nauka Press, (in Russian).Google Scholar
Till-Bottraud, I., Joly, D., Lachaise, D., Snook, R.R. (2005). Pollen and sperm heteromorphism: convergence across kingdoms? J. Evol. Biol. 18, 118.CrossRefGoogle ScholarPubMed
Tseng, C.C. (1971). Light and scanning electron microscopic studies pollen of Tetraplasandra (Araliaceae) and relatives. Amer. J. Bot. 58, 505–16.CrossRefGoogle Scholar
Tseng, C.C., Chuang, T.I. & Hsieh, W.C. (1983). Pollen morphology of Acanthopanax (Araliaceae). Grana 22, 1117.CrossRefGoogle Scholar
Tseng, C.J. & Hoo, G. (1982) A new classification scheme for the family Araliaceae. Acta Phytotax Sinica 20, 125–30.Google Scholar
Tseng, C.C. & Shoup, J.R. (1978). Pollen morphology of Schefflera (Araliaceae). Amer. J. Bot. 65, 384–94.CrossRefGoogle Scholar
Wen, J. & Nowicke, J.W. (1999). Pollen ultrastructure of Panax (the ginseng genus, Araliaceae), an eastern Asian and eastern North American disjunct genus. Amer. J. Bot. 86, 1624–36.CrossRefGoogle ScholarPubMed
Wen, J. & Zimmer, E.A. (1996). Phylogeny and biogeography of Panax L. (the ginseng genus, Araliaceae): inferences from ITS sequences of nuclear ribosomal DNA. Mol. Phylogen. Evol. 6, 167–77.CrossRefGoogle ScholarPubMed
Yong-quan, L. & Jia-heng, S. (1989) Embryological studies on ginseng (Panax ginseng C.A. Meyer). Acta Botanica Sinica 31, 653–60.Google Scholar
Zhuravlev, Yu.N. & Kolyada, A.S. (1996). Araliaceae: Ginseng and Others. Vladivostok: Dalnauka Press, (in Russian with English abstract).Google Scholar
Zhuravlev, Yu.N., Artyukova, E.V., Kozyrenko, M.M. & Reunova, G.D. (2003) Genetic relationships among far eastern species of the family Araliaceae inferred by RAPD analysis. Russ. J. Genet. 39, 4651.CrossRefGoogle ScholarPubMed
Zhuravlev, Yu.N., Reunova, G.D., Kats, I.L. & Muzarok, T.I. (2006). Analysis of genetic variability in populations of Panax ginseng C.A. Meyer using RAPD, ISSR and AFLP markers. In Advances in Ginseng Research (eds Oh, S. & Choi, K-T.), pp. 423432. Geumsan: Korean Society of Ginseng.Google Scholar