A5007603668- Plant and animal studies
- Plant and Fungal Species Descriptions
- Biological and pharmacological studies of plants
- Botany, Ecology, and Taxonomy Studies
- Ecology and Vegetation Dynamics Studies
- Plant Diversity and Evolution
- Plant Parasitism and Resistance
- Genetic diversity and population structure
- Botany and Plant Ecology Studies
- Species Distribution and Climate Change
- Flowering Plant Growth and Cultivation
- Plant Pathogens and Fungal Diseases
- Fern and Epiphyte Biology
- Biological Control of Invasive Species
- Plant Pathogens and Resistance
- Forest Ecology and Biodiversity Studies
- Ecology and Conservation Studies
- Lichen and fungal ecology
- Plant Taxonomy and Phylogenetics
- Peatlands and Wetlands Ecology
- Historical Influence and Diplomacy
- Actinomycetales infections and treatment
- Plant Toxicity and Pharmacological Properties
- Forest Insect Ecology and Management
- Garlic and Onion Studies
University of Copenhagen
2012-2023
Natural History Museum Aarhus
2011-2023
Royal Botanic Gardens, Kew
2021
Natural History Museum of Denmark
2001-2016
Lund University
2007-2016
American Museum of Natural History
2015
Prince of Songkla University
2013
Swedish University of Agricultural Sciences
2007
Aarhus University
1992-1995
Cypripedium calceolus, although widespread in Eurasia, is rare many countries which it occurs. Population genetics studies with nuclear DNA markers on this species have been hampered by its large genome size. Plastid are used here to gain an understanding of variation within and between populations biogeographical patterns. Thirteen length-variable regions (microsatellites insertions/deletions) were identified non-coding plastid DNA. These a previously complex microsatellite the trnL-trnF...
The purpose of this study was to investigate the incidence, clinical presentation, and prognosis Actinotignum bacteremia in southern Sweden. isolates blood cultures were identified retrospectively between 1st January 2012 31st March 2016 through searches microbiology laboratory database. population covered by is approximately 1.3 million. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) used for species determination. Etests minimum inhibitory...
Reliable taxonomy underpins communication in all of biology, not least nature conservation and sustainable use ecosystem resources. The flexibility taxonomic interpretations, however, presents a serious challenge for end-users concepts. Users need standardised continuously harmonised reference systems, as well high-quality complete data sets, but these are generally lacking non-specialists. solution is dynamic, expertly curated web-based tools. Pan-European Species-directories Infrastructure...
The breeding system is expected to strongly influence the genetic structure of plant populations. In present study, isozyme variation documented in Danish populations three species Epipactis, varying from allogamy obligate autogamy. allogamous and widespread E. helleborine subsp. shows high levels polymorphism. Most found within local A hierarchical analysis indicates significant among-population differentiation, but no regional differentiation helkborine apparent. This may be due higher...
In order to prepare for a biosystematic treatment of Dactylorhiza , search is made applicable taxonomic concepts (species, subspecies, variety)–aiming at hierarchical system in which unique kind biological unity applies each level the hierarchy. The degree reproductive isolation between D. purpurella s.str. and maculata s.str., majalis ssp. majaliformis (delimitation nomenclature according Løjtnant 1993) assessed from morphometric data. These three cases represent putative levels...
Polyploidy is common in higher plants, and speciation polyploid complexes usually the result of reticulate evolution. We examined variation nuclear AFLP fingerprints, isozymes, hypervariable plastid DNA loci to describe patterns species relationships Dactylorhiza incarnata/maculata complex (marsh orchids; Orchidaceae) Greece. Several endemic taxa with restricted distribution have been described from this area, propose meaningful conservation priorities, detailed need be known. identified...
With a reduced need for photosynthesis, the plastome of parasitic and mycoheterotrophic plants degrades. In tiny, fully plant Sciaphila thaidanica, we find one smallest plastomes yet encountered. Its size is just 12,780 bp it contains only 20 potentially functional housekeeping genes. Thus S. thaidanica fits proposed model gene loss in achlorophyllous plants. The most astonishing feature its extremely compact nature, with more than half genes having overlapping reading frames. Additionally,...
Abstract Background and Aims Fully mycoheterotrophic plants derive carbon other nutrients from root-associated fungi have lost the ability to photosynthesize. While mycoheterotroph plastomes are often degraded compared with green plants, effect of this unusual symbiosis on mitochondrial genome evolution is unknown. By providing first complete organelle data Polygalaceae, one only three eudicot families that developed mycoheterotrophy, we explore how both organellar genomes evolved after loss...
Seeds of 21 taxa the genera Dactylorhiza (incl. Coeloglossum), Gymnadenia Nigritella) and Pseudorchis were examined by light microscope SEM. Qualitative quantitative characters analyzed. In Dactylorhiza, seeds are fusiform, but some populations D. viridis show clavate seeds. According to ornamentation periclinal walls, 3 types recognized in this genus. The considerable variation seed coat pattern belonging majalis, maculata, praetermissa groups genus is congruent with genetic processes that...
A phylogenetic hypothesis for tribe Podochileae with emphasis on subtribe Eriinae s.s. is based nucleotide sequences of the nuclear ITS and four plastid regions (matK, trnL-F spacer, trnL intron ycf1). The strict consensus tree parsimony largely congruent maximum likelihood a few major differences; most importantly, monophyly as recently circumscribed strongly supported by but not recovered in analysis. Monophyly Thelasiinae (without Ridleyella) s.l. (including Podochilinae) supported,...
The European–Mediterranean–Oriental Dactylorhiza romana/sambucina polyploid complex was studied with regard to genetic and morphological variation patterns. Allozyme morphometric data were collected from 24 19 populations, respectively, initially identified as D. flavescens, insularis, markusii, romana, sambucina, an indeterminate taxon. Genetic distances calculated illustrated by unweighted pair-group method using arithmetic averages (UPGMA) dendrogram, principal components analyses (PCAs)...
Introduction Ptaquiloside (PTA) is a noxious carcinogen found widespread in Bracken (Pteridium sp.) but with scattered and unresolved distribution outside the genus. The causes Bovine Enzootic Haematuria among cattle all-over World under suspicion of causing human cancers. Objective To set-up methodology for large-scale qualitative studies on PTA ferns using already available herbarium specimens as source. Methodology main degradation product pterosin B (PtB) were quantified aqueous frond...
The tropical Asian Brachycorythis helferi complex has presented serious identification problems, even after the genus was monographed in 1955. In present study, morphological variation summarized by principal components analysis (PCA) performed on data from herbarium specimens and probable misidentifications were detected cluster combined with information protologues type specimens. Species delimitations are revised accordingly, leading to recognition of five species: B. henryi, neglecta...
Knowledge about the healing properties of plant substances is probably as old humankind, and this can be demonstrated by botanical finds in archaeological contexts. Southern Scandinavia has a long tradition supplying deceased persons with vegetal material for use their afterlife, shown single seeds or processed plants form foods, drinks medicines. A wellknown example small container made birch bark most filled kind mead produced from honey, Egtved girl's coffin find which been dated to Early...
The systematically difficult genus Epipactis (Orchidaceae) is often subdivided into two sections: and Arthrochilium. Until now, the latter has attracted much less taxonomic attention than former, but here we reassess alleged distinction of rare nationally endangered taxa from tropical Asia (E. flava, E. atromarginata), based on morphological examination live plants in situ northern Thailand herbarium specimens entire range complex (Thailand, Laos Vietnam). As variation vegetative floral...
Eleven Danish populations of the diploid Dactylorhiza incarnata s.lat. have been examined for allozyme variation in DIA, PGD, PGI, PGM, SKD, TP1, and UGPP. The results reveal a deficiency heterozygotes several populations. Possible reasons this are considered. also indicate that no genetic barrier seems to prevent gene flow between D. var. , dunensis ochrantha — some indication exists considerable amount exchange takes place sympatric . On other hand, there is sign recent introgression any...
Morphometric and allozyme data were collected from 11 populations of Dactylorhiza majalis s.l. in the Ardennes (Belgium, France) North Jutland (Denmark). All study growing obviously acid habitats. Genetic distances calculated illustrated by UPGMA dendrograms, while principal components analyses (PCAs) used to summarize morphological variation patterns. Based on PCAs, probability each character distinguish correctly between main groups was estimated. The Danish island Læsø seem agree with...
Apochromic forms of the Eurasian Dactylorhiza incarnata s.l. were studied in northern Europe to reveal their genetic (allozyme) and morphological diversity assess systematic significance. The study included eight localities with sympatric populations plants anthocyanin-pigmented apochromic flowers. Parallel samples two morphs taken from each locality. Genetic variation was only found at allozyme loci pgd, pgi ugpp. Statistically significant differences allele frequencies between colour...
The following nine new additions to the orchid flora of Laos PDR are reported based on surveys in country conducted during period 2012-2017: Bulbophyllum alcicorne, B. meson, Coelogyne suaveolens, Cyrtosia nana, Dendrobium phuketense, Oberonia rhizoides, Phaius columnaris, Thelasis khasiana and Zeuxine longilabris. taxonomy a further 15 taxa (Bulbophyllum guttulatum, moniliforme, sarcophyllum, scabratum, seidenfadenii, tipula, Cleisostoma lecongkietii, ovalis, chapaense, D. crepidatum,...