Dr. B. Gravendeel
Assistant professor (PITA)
- Contact information
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Tel: +31 (0) 71 527 3578
Fax: +31 (0) 71 527 3522
E-mail: .(JavaScript must be enabled to view this email address)
- Main research interests
Evolution and Development of Flowers
How fundamental novelties of changes in body plans originate during evolution is still controversial. The Modern Synthesis theory explains how gradual processes by natural selection can be responsible for evolution. Homeotic mutants, however, that are able to establish stable populations in a natural environment, so-called “hopeful monsters”, prove that a saltatational mode of character change is a potential alternative mechanism for speciation. Homeosis is a result of changes in developmental genes. I investigate homeotic mutants in which different perianth whorls changed organ identity compared to the wildtypes. These morphological changes seem to be caused by a different expression of genes involved in floral development. Gene expression is investigated using RT PCR and in situ hybridisation techniques. Implications of gene duplication and subfunctionalization for the origin of major key innovations during plant evolution and co-evolution with functional groups of pollinators are also investigated.
- Publications
Articles in refereed SCI journals:
Gravendeel, B. 1998. Phylogeny of Coelogyne Lindl. (Orchidaceae) based on morphology and cpDNA RFLP data. Acta Bot. Neerl. 47: 23-264.
Gravendeel, B. & E.F. de Vogel 1999. Revision of Coelogyne sect. Speciosae (Orchidaceae). Blumea 44: 253-320.
Pelser, P.B., B. Gravendeel & E.F. de Vogel. 2000. Revision of Coelogyne sect. Fuliginosae (Orchidaceae). Blumea 45: 253-273.
Sierra, S.E.C., B. Gravendeel & E.F. de Vogel. 2000. Revision of Coelogyne sect. Verrucosae (Orchidaceae): a new sectional delimitation based on morphological and molecular evidence. Blumea 45: 275-318.
Gravendeel, B., M.W. Chase, E.F. de Vogel, M.C. Roos, T.H.M. Mes & K. Bachmann. 2001. Molecular phylogeny of Coelogyne (Epidendroideae, Orchidaceae) based on plastid RFLPs, matK, and nuclear ribosomal ITS sequences: evidence for polyphyly. American Journal of Botany 88: 1915-1927.
Gravendeel, B. & E.F. de Vogel. 2002. Revision of Coelogyne sect. Moniliformes (Orchidaceae) based on morphology, plastid and nrDNA ITS sequences. Blumea 47: 409-462.
Pelser, P.B., B. Gravendeel & R. v.d. Meijden. 2002. Tackling speciose genera: species composition and phylogenetic position of Senecio sect. Jacobaea (Asteraceae) based on plastid and nrDNA sequences. Am. Journ. of Bot. 89: 929-939.
Grob, G.B.J., B. Gravendeel, M.C.M. Eurlings & W.L.A. Hetterscheid. 2002. Phylogeny of the Tribe Thomsonieae (Araceae) Based on Chloroplast matK and trnL Intron Sequences. Systematic Botany 27(3) 453-467.
Pelser, P.B., B. Gravendeel & R. van der Meijden. 2003. Phylogeny reconstruction in the gap between too little and too much divergence: the closest relatives of Senecio jacobaea (Asteraceae) according to DNA sequences and AFLPs. Mol. Phyl.Evol. 29(1): 613-628.
Wilde, W.J.J.O., B.E.E. Duyfjes, B. Gravendeel, R.W.J.M. van der Ham, B.C. Ho, Rugayah, and G.T.P. Vo. 2003. Callitriche nana (Callitrichaceae), a new species from Java, Indonesia. Floribunda 2(3): 57-66.
Grob, G.B.J., G. Gravendeel & M.C.M. Eurlings. 2004. Potential phylogenetic utility of the nuclear FLORICAULA/LEAFY second intron: comparison with three chloroplast DNA regions in Amorphophallus (Araceae). Mol. Phyl. Evol. 30(1): 13-23.
Pelser, P.B., K. van den Hof, B. Gravendeel & R. van der Meijden. 2004. The systematic value of morphological characters in Senecio sect. Jacobaea (Asteraceae) as compared to DNA sequences. Systematic Botany 29: 790-805.
Mols, J.B., B. Gravendeel, L.W. Chatrou, M.D. Pirie, P.C. Bygrave, M.W. Chase & P.J.A. Kessler. 2004. Identifying clades in Asian Annonaceae: monophyletic genera in the polyphyletic Miliuseae. Am. Journ. of Bot. 91: 590-600.
Gravendeel, B., M.C.M. Eurlings, C. van den Berg & P.J. Cribb. 2004. Phylogeny of Pleione (Orchidaceae) and Parentage Analysis of its Wild Hybrids Based on Plastid and Nuclear Ribosomal ITS Sequences and Morphological Data. Systematic Botany 29(1): 50-63.
Pedersen, H.A., B. Gravendeel & D. Mudiana. 2004. Three new species of Dendrochilum (Orchidaceae) and their phylogenetic positions according to plastid and nuclear ribosomal ITS sequences. Blumea 49(2-3): 351-360.
Gravendeel, B., A. Smithson, F.J.W. Slik & A. Schuiteman. 2004. Epiphytism and pollinator specialization: drivers for orchid diversity? Phil. Trans. R. Soc. Lond. B. 359: 1523-1535.
Den Bakker, H.C., B. Gravendeel & T.W. Kuyper. 2004. An ITS phylogeny of Leccinum and an analysis of the evolution of minisatellite-like sequences within ITS1. Mycologia 96(1): 102-118.
Hsu, S.C, B. Gravendeel & E.F. de Vogel. 2005. Taxonomic revision of Geesinkorchis (Coelogyninae; Epidendroideae; Orchidaceae). Blumea 50: 505-517.
Eurlings, M.C.M. & B. Gravendeel. 2005. TrnL-trnF sequence data imply paraphyly of Aquilaria and Gyrinops (Thymelaeaceae) and provide new perspectives for agarwood identification. Plant Systematics and Evolution 254 (1-2): 1-12.
Gravendeel, B. 2006. Molecular phylogenies: why orchidologists should love them. Malayan Orchid Review 40: 66-70.
Fischer, G.A., B. Gravendeel, A. Sieder, J. Adriantiana, P. Heiselmayer, P.J. Cribb, E. Camargo Smidt, R. Samuel & M. Kiehn. 2007. Evolution of resupination in Malagasy species of Bulbophyllum (Orchidaceae). Mol. Phyl. and Evol. 45: 358-376.
Ramirez, S.R., B. Gravendeel, R.B. Singer, C.R. Marshall & N.E. Pierce. 2007. Dating the origin of the Orchidaceae from a fossil orchid with its pollinator. Nature 448: 1042-1045.
Van Geel, B., A. Aptroot, C. Baittinger, H.H. Birks, I.D. Bull, H.B. Cross, R.P. Evershed, B. Gravendeel, E.J.O. Kompanje, P. Kuperus, D. Mol, K.G.J. Nierop, J.P. Pals, A.N. Tikhonov, G. van Reenen & P.H. van Tienderen. 2008. The ecological implications of a Yakutian mammoth’s last meal. Quaternary Research 69(3): 361-376.
Kocyan, A., E.F. de Vogel, E. Conti & B. Gravendeel. 2008. Molecular phylogeny of Aerides (Orchidaceae) based on one nuclear and two plastid markers: a step forward in understanding the evolution of the Aeridinae. Mol. Phyl. Evol. 48: 422-443.
Van den Hof, K., T. Marcussen, R.G. van den Berg & B. Gravendeel. 2008. Chalcone Synthase Gene Lineage Diversification confirms Allopolyploid Evolutionary Relationships of European Rostrate Violets. Mol. Biol. Evol. 25 (10): 2099-2108.
Singer, R.B., B. Gravendeel, H.B. Cross & S.R. Ramirez. 2008. The use of orchid pollinia for taxonomic identification. Selbyana 29(1): 6-19.
Sedayu, A., M.C.M. Eurlings, B. Gravendeel and W. Hetterscheid. Submitted. Morphological character evolution of Amorphophallus (Araceae) based on a combined analysis of trnL, rbcL and LEAFY second intron sequences. Botanical Studies
Eurlings, M.C.M., H. Heuveling van Beek and B. Gravendeel. In review. Polymorphic microsatellites for forensic identification of agarwood. Forensic Science International
