Abstract
ITS1 sequence data was obtained for fireweed (Senecio madagascariensis) andS. lautus from Australia,S. madagascariensis andS. inaequidens from South Africa andS. madagascariensis from Madagascar. Despite the low level of variation (0.0–3.4%), these data further resolve the controversy concerning the identity and origin of fireweed. They confirm that fireweed is part of the South AfricanS. madagascariensis/S. inaequidens complex, and indicate that the infestation in Australia originated from South Africa as opposed to Madagascar. This will facilitate a resumption of biological control efforts in Australia and will direct surveys for control agents to South Africa.
Similar content being viewed by others
References
Ali, S. I., 1969:Senecio lautus complex in Australia V: taxonomic interpretations. — Austral. J. Bot.17: 161–176.
Bain, J. F., Jansen, R. K., 1995: A phylogenetic analysis of the aureoidSenecio (Asteraceae) complex based on ITS sequence data. — Pl. Syst. Evol.195: 209–219.
Chichiricco, G., Frizzi, G., Tammaro, R., 1979: Numeri cromosomici per la Flore Italiana. — Inform. Bot. Ital.11: 3–35.
Harland, S. C., 1955: The experimental approach to the species problem. — InLousley, J. E., (Ed.): Species studies in the British Flora, pp. 16–20. — London: Botanical Society of the British Isles.
Hillis, D. M., Davis, S. K., 1988: Ribosomal DNA: intraspecific polymorphism, concerted evolution and phylogeny reconstruction. — Syst. Zool.37: 63–66.
—, 1991: Ribosomal DNA: molecular evolution and phylogenetic inference. — Quart. Rev. Biol.66: 411–453.
Lawrence, M. E., 1980:Senecio L. (Asteraceae) in Australia: chromosome numbers and the occurrence of polyploidy. — Austral. J. Bot.17: 161–176.
Marohasy, J. J., 1989: A survey of fireweed (Senecio madagascariensis Poir.) and its natural enemies in Madagascar with a view to biological control in Australia. — Pl. Protect. Quart.4: 139–140.
—, 1993: Are we justified in considering fireweed (Senecio madagascariensis) an exotic? — InSwarbrick, C. W. L., Jettner, R. J., Streit, L., Walker, S. R., (Eds): Proceedings, II. 10th Australian and 14th Asian-Pacific weed conference, pp. 122–127. — Brisbane: Incitec.
Michael, P. W., 1981: Alien plants. — InGroves, R. H., (Ed.): Australian vegetation, p. 44. — Cambridge: Cambridge University Press.
Radford, I. J., 1997: Impact assessment for the biological control ofSenecio madagascariensis Poir. (Fireweed). — Thesis, University of Sydney.
—, 1995: Chormosome counts for the Australian weeds known asSenecio madagascariensis (Asteraceae). — Austral. Syst. Bot.8: 1029–1033.
Sindel, B. M., 1986: The ecology and control of fireweed (Senecio madagascariensis Poir.). — Pl. Protect. Quart.1: 163–172.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Scott, L.J., Congdon, B.C. & Playford, J. Molecular evidence that fireweed (Senecio madagascariensis, Asteraceae) is of South African origin. Pl Syst Evol 213, 251–257 (1998). https://doi.org/10.1007/BF00985204
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00985204