A5064330391- Plant Diversity and Evolution
- Plant and Fungal Species Descriptions
- Plant and animal studies
- Genomics and Phylogenetic Studies
- African Botany and Ecology Studies
- Plant Parasitism and Resistance
- Species Distribution and Climate Change
- Genetic diversity and population structure
- Cocoa and Sweet Potato Agronomy
- Traditional and Medicinal Uses of Annonaceae
- Ecology and Vegetation Dynamics Studies
- Evolution and Paleontology Studies
- Botanical Research and Applications
- Phytoplasmas and Hemiptera pathogens
- Plant Taxonomy and Phylogenetics
- Mediterranean and Iberian flora and fauna
- Amphibian and Reptile Biology
- Scarabaeidae Beetle Taxonomy and Biogeography
- Forest ecology and management
- Natural product bioactivities and synthesis
- Complementary and Alternative Medicine Studies
- Ethnobotanical and Medicinal Plants Studies
- Botanical Studies and Applications
- Plant Ecology and Taxonomy Studies
- Agroforestry and silvopastoral systems
Ghent University
2018-2025
Ghent University Hospital
2020-2024
Wageningen University & Research
2008-2018
Naturalis Biodiversity Center
2010-2012
Netherlands Organisation for Applied Scientific Research
2008
Utrecht University
1997-2007
Prognosys Biosciences (United States)
1994-2007
To study the inter‐ and infrafamilial phylogenetic relationships in order Caryophyllales sensu lato (s.l.), ∼930 base pairs of matK plastid gene have been sequenced analyzed for 127 taxa. In addition, these sequences combined with rbcL 53 taxa atpB genes as well nuclear 18S rDNA 26 to provide increased support deeper branches. The red pigments Corbichonia , Lophiocarpus Sarcobatus tested shown belong betacyanin class compounds. Most are clearly grouped into two main clades (i.e., “core”...
Plastid matK gene sequences for 374 genera representing all angiosperm orders and 12 of gymnosperms were analyzed using parsimony (MP) Bayesian inference (BI) approaches. Traditionally, slowly evolving genomic regions have been preferred deep-level phylogenetic in angiosperms. The evolves approximately three times faster than the widely used plastid genes rbcL atpB. MP BI trees are highly congruent. robustness strict consensus tree supercedes individual analyses is comparable only to...
The pantropical flowering plant family Annonaceae is the most species-rich of Magnoliales. Despite long-standing interest in systematics Annonaceae, no authoritative classification has yet been published light recent molecular phylogenetic analyses. Here, using largest, representative, dataset compiled on to date, we present, for first time, a robust family-wide tree and subsequent classification. We used supermatrix up eight plastid markers sequenced from 193 ingroup seven outgroup species....
Angiosperms are the cornerstone of most terrestrial ecosystems and human livelihoods
Magnoliids are a strongly supported clade of angiosperms. Previous phylogenetic studies based primarily on analyses limited number mostly plastid markers have led to the current classification magnoliids into four orders and 18 families. However, uncertainty remains regarding placement several For first comprehensive phylogenomic analysis as whole, we sampled 235 species from 199 (74%) genera representing all families most subfamilies tribes. We analyzed newly generated data Angiosperms353...
Annonaceae are a pantropically distributed family found predominantly in rainforests, so they megathermal taxa, whereas Rhamnaceae cosmopolitan that tend to be xeric regions and may classified as mesothermal. Phylogenetic analyses of these families presented based on rbcL trnL-F plastid DNA sequences. Likelihood ratio tests revealed rate heterogeneity both phylogenetic trees were therefore made ultrametric using non-parametric smoothing penalized likelihood. Divergence times then estimated...
Aim Rain forest-restricted plant families show disjunct distributions between the three major tropical regions: South America, Africa and Asia. Explaining these disjunctions has become an important challenge in biogeography. The pantropical family Annonaceae is used to test hypotheses that might explain diversification distribution patterns biota: museum hypothesis (low extinction leading steady accumulation of species); dispersal Asia via Indian rafting versus boreotropical geodispersal....
Tropical rain forests are the most diverse terrestrial ecosystems on planet. How this diversity evolved remains largely unexplained. In Africa, situated in two geographically isolated regions: West-Central Guineo-Congolian region and coastal montane regions of East Africa. These have strong floristic affinities with each other, suggesting a former connection via an Eocene pan-African forest. High levels endemism observed both been hypothesized to be result either 1) single break-up followed...
DNA sequences of nine genes (plastid: atpB, matK, and rbcL; mitochondrial: atp1, matR, mtSSU, mtLSU; nuclear: 18S 26S rDNAs) from 100 species basal angiosperms gymnosperms were analyzed using parsimony, Bayesian, maximum likelihood methods. All these analyses support the following consensus relationships among angiosperms. First, Amborella, Nymphaeaceae, Austrobaileyales are strongly supported as a grade in angiosperm phylogeny, with either Amborella or Nymphaeales sister to all other An...
Tropical rainforest hyperdiversity is often suggested to have evolved over a long time-span (the 'museum' model), but there also evidence for recent radiations. The mahoganies (Meliaceae) are prominent plant group in lowland tropical rainforests world-wide occur all other ecosystems. We investigated whether diversity Meliaceae has accumulated time or more recently evolved. inferred the largest time-calibrated phylogeny family date, reconstructed ancestral states habitat and deciduousness,...
Magnoliales, consisting of six families tropical to warm-temperate woody angiosperms, were long considered the most archaic order flowering plants, but molecular analyses nest them among other eumagnoliids. Based on separate and combined a morphological matrix (115 characters) multiple data sets (seven variable chloroplast loci five more conserved genes; 14 536 aligned nucleotides), phylogenetic relationships investigated simultaneously within Magnoliales Myristicaceae, using Laurales,...
Abstract Aim We test biogeographical hypotheses regarding the origin of Andean‐centred plant groups by reconstructing phylogeny in short‐branch clade (SBC) Annonaceae, and estimating timing diversifications four apparently genera: Cremastosperma R.E.Fr., Klarobelia Chatrou, Malmea R.E.Fr. Mosannona Chatrou. The SBC includes species distributed both Old New World tropics. A number Neotropical genera display ‘Andean‐centred’ distribution patterns, with high richness on sides Andes mountain...
Convolvulaceae is a family of c. 2,000 species, distributed across 60 currently recognized genera. It includes species high economic importance, such as the crop sweet potato (Ipomoea batatas L.), ornamental morning glories bindweeds (Convolvulus and dodders, parasitic vines (Cuscuta L.). Earlier phylogenetic studies, based predominantly on chloroplast markers or single nuclear region, have provided framework for systematic studies family, but uncertainty remains at level relationships among...
The tribe Miliuseae (Annonaceae) comprises six genera distributed in Asia: Alphonsea , Mezzettia Miliusa Orophea Platymitra and Phoenicanthus . A phylogenetic study to investigate the putative monophyly of intergeneric relationships is presented here. Nucleotide sequences plastid gene rbcL, trnL intron, ‐ trnF intergenic spacer were analyzed from 114 Annonaceae taxa, including 24 species two outgroups using maximum parsimony Bayesian inference. data sets ( rbcL regions) separately...
Abstract Annonaceae is a major tropical plant family particularly diverse in rain forests of the world. Although classification and systematics has significantly improved over past decade, most recent was based on reduced set plastid markers incomplete genus‐level taxon sampling. This recognised 4 subfamilies 20 tribes. Yet, several important problems persisted, especially phylogenetic placement African genus Meiocarpidium , resolution intertribal relationships within subfamily Malmeoideae,...
Myco-heterotrophy evolved independently several times during angiosperm evolution. Although many species of myco-heterotrophic plants are highly endemic and long-distance dispersal seems unlikely, some genera widely dispersed have pantropical distributions, often with large disjunctions. Traditionally this has been interpreted as evidence for an old age these taxa. However, due to their scarcity reduced plastid genomes our understanding about the evolutionary histories groups is poor. We...
Age and the greenness of leaves have been frequently used as indicators for selecting herbarium specimens molecular studies.Although plant DNA extraction amplification common lab procedures past 20 years, no studies specifically investigated success these indicators.Here predictive value age is assessed, using a large number from different groups.the investigation important because material precious commodity, often only remaining floral record now extinct ecosystems.In cases where little...
Guatteria (Annonaceae) is with ca. 265 species one of the largest genera Neotropical trees together Inga and Ocotea . Use in evolutionary studies has been hampered by taxonomic problems caused lack morphological variability genus. This study focuses on molecular phylogenetic relationships within its satellites Guatteriopsis, Guatteriella Heteropetalum , implications these for classification character evolution. Results show that should be merged Guatteria. may recognized at subgeneric level...
The tropical rain forests (TRF) of Africa are the second largest block this biome after Amazon and exhibit high levels plant endemism diversity. Two main hypotheses have been advanced to explain speciation processes that led level biodiversity: allopatric linked geographic isolation ecological gradients. Both these rely on ecology: in former conservation niches through time is implied, while latter adaptation via selection alternative would be a prerequisite. Here, we investigate role...
• Premise of the study: Tribe Miliuseae (∼25 genera and ∼510 species) includes a substantial part species generic diversity in pantropical flowering‐plant family Annonaceae (∼108 ∼2400 species). Previous molecular phylogenetic analyses have failed to resolve backbone phylogeny tribe, impeding biogeographical evolutionary studies. We use dense taxon sample (∼89% Miliuseae) plastid DNA sequence data (∼7 kb) clarify relationships within tribe. Methods: Parsimony Bayesian reconstructions...