Molecular evidence that fireweed (Senecio madagascariensis, Asteraceae) is of South African origin |
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| Authors: | L. J. Scott B. C. Congdon J. Playford |
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| Affiliation: | (1) Cooperative Research Centre for Tropical Pest Management, University of Queensland, 4072 Brisbane, Australia;(2) Cooperative Research Centre for Tropical Pest Management, University of Queensland, 4072 Brisbane, Australia;(3) Department of Botany, University of Queensland, 4072 Birsbane, Australia |
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| 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. |
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| Keywords: | Asteraceae Senecioneae Senecio S. madagascariensis S. inaequidens S. lautus Weed genetics internal transcribed spacer ITS biological control |
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