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Laboratory of Plant Systematics

 

Steven Janssens - Publications

2011

• Janssens, S.B., Dessein, S. & E. Smets. (2011). Portrayal of Impatiens nzabiana (Balsaminaceae): a morphological, molecular and biogeographic study of a new Gabonese species. Systematic Botany 36, 2: 440-448, 5 figs.

• Shui, Y.M., Janssens, S., Huang, S.H., Chen, W.H. & Z.G. Yang. (2011). Three new species of Impatiens L. from China and Vietnam: preparation of flowers and morphology of pollen and seeds. Systematic Botany 36, 2: 428-439, 6 figs.

2010

• Janssens, S.B., Fischer, E. & T. Stévart. (2010). New insights into the origin of two new epiphytic Impatiens species (Balsaminaceae) from West Central Africa based on molecular phylogenetic analyses. Taxon 59, 5: 1508-1518, 5 figs.

2009

• Ntore, S., Lachenaud, O., Janssens, S. & S. Dessein. (2009). Four new Pauridiantha species (Rubiaceae) reflect the richness of Gabon’s rainforests. Belgian Journal of Botany 142, 2: 177-193, 7 figs.

• Viaene, T., Vekemans, D., Irish, V.F., Geeraerts, A., Huysmans, S., Janssens, S., Smets, E. & K. Geuten. (2009). Pistillata-Duplications as a mode for floral diversification in (basal) asterids. Molecular Biology and Evolution 26, 11: 2627-2645, 5 figs.

• Janssens, S., Knox, E., Huysmans, S., Smets, E. & V. Merckx. (2009). Rapid radiation of Impatiens (Balsaminaceae) during Pliocene and Pleistocene: Result of global climate change. Molecular Phylogenetics and Evolution 52, 3: 806-824, 8 figs.

• Janssens, S., Knox, E., Dessein, S. & E. Smets. (2009). Impatiens msisimwanensis (Balsaminaceae): Description, pollen morphology and phylogenetic position of a new East African species. South African Journal of Botany 75, 1: 104-109, 4 figs

2008

• Janssens, S., Viaene, T., Huysmans, S., Smets, E. and K. Geuten. (2008). Selection on length mutations after frameshift can explain the origin and retention of the AP3/DEF-like paralogues in Impatiens. Journal of Molecular Evolution 66: 424-435. (pdf)

2007

• Janssens, S., Geuten, K., Viaene, T., Yuan, Y.-M., Song, Y., and E. Smets. (2007). Phylogenetic utility of the AP3/DEF K-domain and its molecular evolution in Impatiens (Balsaminaceae). Molecular Phylogenetics and Evolution 43, 1: 225-239, 8 figs. (pdf)

2006

• Geuten, K., Becker, A., Kaufmann, K., Caris, P., Janssens, S., Viaene, T., Theissen, G. & E. Smets. (2006). Petaloidy and petal identity MADS-box genes in the balsaminoid genera Impatiens and Marcgravia. The Plant Journal 47: 501-518, 13 figs. (pdf)

• Janssens, S., Geuten, K., Yuan, Y.-M., Song, Y., Küpfer, P. & E. Smets. (2006). Phylogenetics of Impatiens and Hydrocera (Balsaminaceae) using chloroplast atpB-rbcL spacer sequences. Systematic Botany 31, 1: 171-180, 3 figs. (pdf)

• Caris, P., Geuten, K., Janssens, S. & E. Smets. (2006). Floral development in three species of Impatiens (Balsaminaceae). American Journal of Botany 93, 1: 1-14, 8 figs.

2005

• Janssens, S., Lens, F., Dressler, S., Geuten, K., Smets, E. & S. Vinckier. (2005). Palynological variation in balsaminoid Ericales. II Balsaminaceae, Tetrameristaceae, Pellicieraceae and general conclusions. Annals of Botany 96, 6: 1061-1073, 5 figs. (pdf)

• Lens, F., Dressler, S., Vinckier, S., Janssens, S., Dessein, S., Van Evelghem, L. & E. Smets. (2005). Palynological variation in balsaminoid Ericales. I Marcgraviaceae. Annals of Botany 96, 6: 1047-1060, 6 figs. (pdf)

2004

• Schols, P., D’hondt, C., Geuten, K., Merckx, V., Janssens, S. & E. Smets. (2004). MorphoCode: coding quantitative data for phylogenetic analyses. Phyloinformatics 4: 1-4, 2 figs. (pdf)

• Geuten, K., Smets, E., Schols, P., Yuan, Y.-M., Janssens, S., Küpfer, P. & N. Pyck. (2004). Conflicting phylogenies of Balsaminoid families and the polytomy in Ericales: combining data in a Bayesian framework. Molecular Phylogenetics and Evolution 31: 711-729, 5 figs. (pdf)

ABSTRACTS

2011

• Appelhans, M.S., Janssens, S.B., Smets, E. & P.J.A. Keßler. (2011). Age and historical biogeography of the pantropically distributed and species poor subfamily Spathelioideae (Rutaceae). In: XVIII International Botanical Congress, Melbourne Australia, 23-30 July 2011, Abstracts: 303. www.ibc2011.com, 752 p.

• Smets, E., Melzer, S., Janssens, S., Eeckhout, S. & F. Lens. (2011). Habit shifts within Balsaminaceae, with special emphasis on the origin of woodiness and the underlying genetic background mechanism. In: XVIII International Botanical Congress, Melbourne Australia, 23-30 July 2011, Abstracts: 180-181. www.ibc2011.com, 752 p.

• Appelhans, M.S., Janssens, S.B., Smets, E. & P.J.A. Keßler. (2011). The Spathelioideae: Molecular phylogeny and historical biogeography of a subfamily of Rutaceae (Sapindales) with remarkable morphological diversity. In: Borsch, T., Giere, P., Hoffmann, J., Jahn, R., Löhne, C., Nordt, B. & M. Ohl (eds.), BioSystematics Berlin, 21 – 27 February 2011, Programme and Abstracts: 39-40. Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, Germany. 434 p. ISBN 978 3 921800 68 3

2010

• Appelhans, M., Janssens, S., Smets, E. & P.J.A. Kessler. (2010). The Spathelioideae: molecular phylogeny and historical biogeography of a subfamily of Rutaceae (Sapindales) with remarkable morphological diversity. In: 17th PhD day, 6 December 2010. Program, abstracts and addresses: 4. Onderzoeksschool Biodiversiteit. 16 p.

• Janssens, S.B., Knox, E.B. & E. Smets. (2010). Rapid diversification of African Impatiens: a biogeographical study. In: Jeannoda, V.H., Razafimandimbison, S.G., & P. De Block. (eds.) XIXIth AETFAT Congress Madagascar, 25-30 April 2010. Abstracts: 222. Scripta Botanica Belgica 46. National Botanic Garden of Belgium, Meise. 510 p.

2009

• Janssens, S., Knox, E., Huysmans, S., Smets, E. & V. Merckx. (2009). Rapid diversification of Impatiens: result of a global climate change. In: Systematics 2009. 1st meeting of BioSyst EU. Program and Abstract: 72. National Herbarium of the Netherlands, Leiden branch and National Museum of Natural History Naturalis. 142 p.

 

2007

• Janssens, S., Geuten, K., Huysmans, S. & E. Smets. (2007). Evolution of AP3/DEF C-terminal domain in Impatiens (Balsaminaceae). In: Abstracts of the Young Botanists Day 2006 “Tropical botany in the Benelux”, Belgian Journal of Botany 140, 2: 252.

• Geuten, K., Janssens, S., Viaene, T., Vekemans, D., Huysmans, S. & E. Smets. (2007). The role of lineage specific birth and death of homeotic transcriptional regulators in angiosperm flower diversification. In: Buys, N., Callaerts, P., Keulemans, W., Van Dijck, P. & F. Volckaert (eds.) Centre of Evolutionoary Biology – Leuven. Kick off meeting (7 September 2007). K.U.Leuven.

• Janssens, S., Geuten, K., Huysmans, S. & E. Smets. (2007). Molecular evolution of the C-terminus in AP3/DEF-like genes of Impatiens. In: Systematics – The Sixth Biennial Conference of the Systematics Association, 28-31 August 2007. Celebrating the tercentenary of the birth of Carl Linnaeus: 55. Royal Botanic Garden Edinburgh. 80 p.

2006

• Janssens, S., Geuten, K., Huysmans, S. & E. Smets. (2006). Evolution of AP3/DEF C-terminal domain in Impatiens (Balsaminaceae). In: Young Botanists’ Day, 24 November 2006: 6. Leuven. 16 p.

• Geuten, K., Becker, A., Kaufmann, K., Caris, P., Janssens, S., Viaene, T., Theissen, G. & E. Smets. (2006). A petal identity crisis – MADS-domain proteins and the evolution of petaloidy in balsaminoid Ericales. In: European Society for Evolutionary Developmental Biology – The First and Founding Meeting, August 2006: 102-103. Prague, Czech Republic. 363 p.

• Janssens, S., Geuten, K., Huysmans, S. & E. Smets. (2006). Evolution of the AP3/DEF K-domain and C-terminal domain in Impatiens. In: Botany 2006. Looking to the future – Conserving the past, July 29-August 2, 2006. Scientific Meeting Abstracts 337: 154. Chico, California. 394 p.

2005

• Geuten, K., Janssens, S., Viaene, T., Caris, P., Kaufmann, K., Becker, A., Theissen, G. & E. Smets. (2005). What you see is what you get? B-class MADS-box genes and petal identity in the basal asterid balsaminoid families. In: International workshop on MADS-box transcription factors. 23-26 October 2005: 44. Gargnano, Italy. 57 p.

• Van Evelghem, L., Lens, F., Dressler, S., Vinckier, Janssens, S., Dessein, S. & E. Smets. (2005). Palynological variation of Marcgraviaceae. In: XVII International Botanical Congress, Abstracts: P1108, p. 414. Vienna. 728 p.

• Janssens, S., Geuten, K., Yuan, Y.-M., Song, Y., Küpfer, P. & E. Smets. (2005). Phylogenetics of Balsaminaceae based on atpB-rbcL spacer sequences.In: XVII International Botanical Congress, Abstracts: P1104, p. 413. Vienna. 728 p.

2003

• Janssens, S., Geuten, K., Yuan, Y.-M., Pyck, N. & E. Smets. (2003). Systematic relations in Balsaminaceae: preliminary analyses of atpB-rbcL spacer sequence data. In: Fourth Biennial Conference of the Systematics Association, 18-22 August 2003. Programme and Abstracts: 56. Trinity College, Dublin, Ireland. 75 p.

• Geuten, K., Smets, E., Schols, P., Janssens, S., Yuan, Y.-M., Küpfer, P. & N. Pyck. (2003). Conflicting phylogenies of Balsaminoid families and the polytomy in Ericales: combining data in a Bayesian framework. In: Fourth Biennial Conference of the Systematics Association, 18-22 August 2003. Programme and Abstracts: 55. Trinity College, Dublin, Ireland. 75 p.