Abstract
Six different floral morphologies can be found among the ca. 146 species of Streptocarpus occurring in Africa and Madagascar. One of these, a simple, small pouch type, was found to be plesiomorphic for the genus after mapping these floral types onto a molecular phylogeny. The breeding systems and population structure of three species possessing the plesiomorphic small floral morphology, S. micranthus, S. ibityensis and S. lanatus, have been investigated using nuclear microsatellite markers. Significant deviations from panmixia were found both at the between and within population level (S. micranthus θ = 0.708, f = 0.786; S. ibityensis, θ = 0.173, f = 0.138; S. lanatus, θ=0.539, f = 0.646). As a florally diverse genus, Streptocarpus is unusual in having a predominantly selfing, mixed mating breeding system as a plesiomorphic condition.
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References
R. Allard S. K. Jain P. L. Workman (1969) ArticleTitleGenetics of inbreeding populations Advances Genet. 14 55–137 Occurrence Handle10.1016/S0065-2660(08)60425-3
J. A. Dole (1992) ArticleTitleReproductive assurance methods in three taxa of the Mimulus guttata complex (Scrophulariaceae) Amer. J. Bot. 79 605–659 Occurrence Handle10.2307/2444881
G. C. French R. A. Ennos A. J. Silverside P. M. Hollingsworth (2005) ArticleTitleThe relationship between flower size, inbreeding coefficient and inferred selfing rate in British Euphrasia species Heredity 94 44–51 Occurrence Handle15316556 Occurrence Handle1:STN:280:DC%2BD2cnisFKrsg%3D%3D Occurrence Handle10.1038/sj.hdy.6800553
V. Grant (1981) Plant Speciation Columbia University Press New York, USA
Goudet J. (2001) FSTAT, a Program to estimate and test gene diversities and fixation indices. Version 2.9.3. Available from http://www.unil.ch/izea/softwares/fstat.html.
C. J. Harrison M. Möller Q. C. B. Cronk (1999) ArticleTitleEvolution and development of floral diversity in Streptocarpus and Saintpaulia Ann. Bot. 84 49–60 Occurrence Handle10.1006/anbo.1999.0887
O. M. Hilliard B. L. Burtt (1971) Streptocarpus. An African plant study University of Natal Press Pietermaritzburg
M. Hughes M. Möller D. U. Bellstedt T. J. Edwards M. Woodhead (2004) ArticleTitleEST and random genomic nuclear microsatellite markers for Streptocarpus Molec. Ecol. Notes 4 36–38 Occurrence Handle1:CAS:528:DC%2BD2cXitlymu7k%3D Occurrence Handle10.1046/j.1471-8286.2003.00561.x
H. Humbert (1971) Gesnériacées, fam. 180 J. F. Leroy (Eds) Flore de Madagascar et des Comores Natural History Museum Paris
Lewis P. O., Zaykin D. (2001) Genetic Data Analysis: Computer program for the analysis of allelic data. Version 1.0 (d16c). Free software distributed by the authors over the internet from http://lewis.eeb.uconn.edu/lewishome/software. html.
G. MacMaster M. Möller M. Hughes T. J. Edwards D. U. Bellstedt (2005) ArticleTitleA new species of Streptocarpus endemic to Madagascar Adansonia 27 131–136
D. R. Maddison W. P. Maddison (2003) MacClade, Version 4.06 Sinauer Associates Massachusetts
M. Möller Q. C. B. Cronk (1997) ArticleTitleOrigin and relationships of Saintpaulia (Gesneriaceae) based on ribosomal internal transcribed spacer (ITS) sequences Amer. J. Bot. 84 956–965 Occurrence Handle10.2307/2446286
Möller M., Cronk Q. C. B. (2001a) Evolution of morphological novelty: a phylogenetic analysis of growth patterns in Streptocarpus (Gesneriaceae). Evolution 55: 918–929.
Möller M., Cronk Q. C. B. (2001b) Phylogenetic studies in Streptocarpus (Gesneriaceae): reconstruction of biogeographic history and distribution patterns. Syst. Geogr. Pl. 71(2): 545–555.
Park S. D. E. (2001) Trypanotolerance in west african cattle and the population genetic effects of selection. Ph.D. thesis, University of Dublin. Code available from: http://oscar.gen.tcd. ie/~ sdepark/ms-toolkit/
M. Perret A. Chautems R. Spichiger G. Kite V. Savolainen (2003) ArticleTitleSystematics and evolution of tribe Sinningieae (Gesneriaceae): evidence from phylogenetic analyses of six plastid DNA regions and nuclear ncPGS1 Amer. J. Bot. 90 445–460 Occurrence Handle1:CAS:528:DC%2BD3sXivFegsrk%3D
C. J. Potgieter T. J. Edwards (2005) ArticleTitleThe Stenobasipteron wiedemanni (Diptera, Nemestrinidae) pollination guild in eastern South Africa Ann. Missouri Bot. Gard. 92 254–267
W. R. Rice (1989) ArticleTitleAnalyzing tables of statistical tests Evolution 43 487–498 Occurrence Handle10.2307/2409177
E. H. Roalson A. E. Senters L. E. Skog E. A. Zimmer (2002) ArticleTitleA morphological cladistic analysis of the neotropical flowering plant genus Gasteranthus (Gesneriaceae) Syst. Bot. 27 573–591
G. L. Stebbins (1970) ArticleTitleAdaptive radiation of reproductive characteristics in angiosperms, I: Pollination mechanisms Annual Rev. Ecol. Syst. 1 307–326 Occurrence Handle10.1146/annurev.es.01.110170.001515
Martin-Gajardo I. San M. Sazima (2004) ArticleTitleNon-Euglossine bees also function as polliniators of Sinningia species (Gesneriaceae) in Southern Brazil Pl. Biol. 6 506–512 Occurrence Handle10.1055/s-2004-820979
N. Takebayashi P. L. Morrell (2001) ArticleTitleIs self-fertilization an evolutionary dead end? Revisiting an old hypothesis with genetic theories and a macroevolutionary approach Amer. J. Bot. 88 1143–1150
B. S. Weir C. C. Cockerham (1984) ArticleTitleEstimating F-statistics for the analysis of population structure Evolution 38 1358–1370 Occurrence Handle10.2307/2408641
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Hughes, M., MacMaster, G., Möller, M. et al. Breeding system of a plesiomorphic floral type: an investigation of small flowered Streptocarpus (Gesneriaceae) species. Plant Syst. Evol. 262, 13–24 (2006). https://doi.org/10.1007/s00606-006-0453-6
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DOI: https://doi.org/10.1007/s00606-006-0453-6