Lars Chatrou- PhD
- Professor at Ghent University
Lars Chatrou
- PhD
- Professor at Ghent University
About
248
Publications
59,261
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Introduction
Lars Chatrou currently works at Ghent University, dept. of Biology. Lars does research in phylogenetic systematics, biogeography and phylogeography. He tests hypotheses on the origin and demise of tropical woody plants, on changes in their geographical distribution and ecological preferences, and on the evolution of life history features such as floral odours.
Current institution
Additional affiliations
Education
March 1993 - October 1998
Publications
Publications (248)
Tropical rainforest hyperdiversity is often suggested to have evolved over a long time-span (the 'museum' model), but there is also evidence for recent rainforest radiations. The mahoganies (Meliaceae) are a prominent plant group in lowland tropical rainforests world-wide but also occur in all other tropical ecosystems. We investigated whether rain...
Tribe Miliuseae (∼25 genera and ∼510 species) includes a substantial part of the species and generic diversity in the pantropical flowering-plant family Annonaceae (∼108 genera and ∼2400 species). Previous molecular phylogenetic analyses have failed to resolve the backbone phylogeny of the tribe, impeding biogeographical and evolutionary studies. W...
The pantropical flowering plant family Annonaceae is the most species-rich family of Magnoliales. Despite long-standing interest in the systematics of Annonaceae, no authoritative classification has yet been published in the light of recent molecular phylogenetic analyses. Here, using the largest, most representative, molecular dataset compiled on...
Remarkably little is known about the evolution of the emblematic genus Amorphophallus. To shed new light on phy-logenetic relationships between species of Amorphophallus and test its current classification, the first well-sampled molecular phylogenetic analysis is presented here, comprising 157 species for which we generate nuclear (ITS1) and plast...
Premise
Magnoliids are a strongly supported clade of angiosperms. Previous phylogenetic studies based primarily on analyses of a limited number of mostly plastid markers have led to the current classification of magnoliids into four orders and 18 families. However, uncertainty remains regarding the placement of several families.
Methods
For the fi...
Seven nomenclatural novelties in the genus Distimake Raf. are here proposed: five species, two from the Neotropics and three from Eastern Africa, which were incertae sedis following revisionary work of Merremia Dennst. ex Endl. s.l., are here combined in Distimake based on recent taxonomic and phylogenetic progress; and two nomenclatural novelties...
Aim: We investigated the potential resilience to climatic change of nine species of weeds in Convolvulaceae, using predictive spatial modeling across two contrasting biomes in Southeastern Brazil: Cerrado (=Savanna) and Mata Atlantica (=Atlantic Forest). We inferred future changes in distribution area, the climatic variables that will be most impac...
Annonaceae is a major tropical plant family particularly diverse in tropical rain forests of the world. Although the classification and systematics of the family has significantly improved over the past decade, the most recent classification was based on a reduced set of plastid markers and incomplete genus‐level taxon sampling. This classification...
Premise
Hybridization capture kits are now commonly used for reduced representation approaches in genomic sequencing, with both universal and clade‐specific kits available. Here, we present a probe kit targeting 799 low‐copy genes for the plant family Annonaceae.
Methods
This new version of the kit combines the original 469 genes from the previous...
Angiosperms are the cornerstone of most terrestrial ecosystems and human livelihoods1,2. A robust understanding of angiosperm evolution is required to explain their rise to ecological dominance. So far, the angiosperm tree of life has been determined primarily by means of analyses of the plastid genome3,4. Many studies have drawn on this foundation...
Background
The use of medicinal plants is integral to global healthcare systems, with Sub-Saharan Africa maintaining a robust tradition of herbal medicine alongside Western-oriented healthcare. As migrant communities tend to continue traditional herbal practices after migration, documenting this use is vital to develop culturally sensitive healthca...
Premise
Magnoliidae are a strongly supported clade of angiosperms. Previous phylogenetic studies based primarily on analyses of a limited number of mostly plastid markers have led to the current classification of magnoliids into four orders and 18 families. However, uncertainty remains regarding the placement of several families.
Methods
Here we p...
PREMISE: The development of RNA baiting kits for reduced representation approaches of genomic sequencing is popularized, with universal and clade-specific kits for flowering plants available. Here, we provided an updated version of the Annonaceae bait kit targeting 799 low copy genes, known as Annonaceae799.
METHODS: This new version of the kit com...
A proposal to change the conserved type of Ipomoea was published in December 2020, and recommended by the Nomenclature Committee in 2023. This was done in the light of the possible negative consequences for a name change in the crop sweetpotato, which risk our proposal would significantly minimize. Recently, Muñoz‐Rodríguez & al. have published a r...
Distimake vitifolius comb. nov. (Convolvulaceae), currently treated as Camonea vitifolia, is a common and widespread species in South-East Asia. A recent study on the re-delimitation of the genus Merremia classified its species into six genera. The results of molecular phylogenetic analyses and the presence of hexazonocolpate pollen informed the tr...
On the island of Hispaniola, five endemic species of Magnolia occur, all of which are threatened with extinction. Little is known about their distribution and genetic health, hampering targeted conservation actions. The objective of this study is to assess the potential distribution and the genetic health of the Magnolias of Hispaniola, to inform c...
The Annonaceae family contains important tropical crops, but the number of species used commercially is limited, and development of other promising species for cultivation is hindered by a lack of genomic resources to support the building of breeding programmes. The family is part of the magnoliids, an ancient lineage of angiosperms for which evolu...
Convolvulaceae is a family of c. 2,000 species, distributed across 60 currently recognized genera. It includes species of high economic importance, such as the crop sweet potato (Ipomoea batatas L.), the ornamental morning glories (Ipomoea L.), bindweeds (Convolvulus L.), and dodders, the parasitic vines (Cuscuta L.). Earlier phylogenetic studies,...
This taxonomic revision of the continental African species of Monanthotaxis ( Annonaceae ) includes 79 species and one variety. Thirteen new species ( M. aestuaria , M. bidaultii , M. confusa , M. glabra , M. hexamera , M. mcphersonii , M. quasilanceolata , M. sterilis , M. submontana , M. suffruticosa , M. ursus , M. vulcanica and M. wieringae ) a...
The Caribbean islands provide an ideal setting for studying biodiversity, given their complex geological and environmental history, and their historical and current geographical proximity to the American mainland. Magnolia, a flagship tree genus that has 15 endemic and threatened taxa (12 species and 3 subspecies) on the Caribbean islands, offers a...
Decalobanthus is a genus of woody climbers of Convolvulaceae, recently expanded from a monotypic genus to including 17
species, mainly distributed in Asia and the Pacific. Despite the monophyly and the strong morphological and geographical
coherence of the genus, only five of its species have been sampled in a molecular phylogenetic study and their...
The flowering plant family Annonaceae includes important commercially grown tropical crops, but development of promising species is hindered by a lack of genomic resources to build breeding programs. Annonaceae are part of the magnoliids, an ancient lineage of angiosperms for which evolutionary relationships with other major clades remain unclear....
Proposal to change the conserved type of Ipomoea, nom. cons. (Convolvulaceae)
The recent revisionary work of “Merremieae” has resulted in the segregation of the c. 100 species of the pantropical genus Merremia into six genera. Thus, the formerly monotypic genus Decalobanthus was expanded, aggregating 13 species of Merremia s.l. The genus delimitation is coherent, with strong molecular phylogenetic and morphological support....
As a result of concerted efforts of the community of Annonaceae taxonomists, increasingly detailed knowledge of the diversity of the Neotropical genera has been documented. With the exception of just two large genera, Annona and Xylopia, all Neotropical Annonaceae have been revised within the last 25 years. Subsequent to these publications, many ne...
Deep relationships and the sequence of divergence among major lineages of angiosperms (magnoliids, monocots and eudicots) remain ambiguous and differ depending on analytical approaches and datasets used. Complete genomes potentially provide opportunities to resolve these uncertainties, but two recently published magnoliid genomes instead deliver fu...
Aim
Long‐distance dispersal has contributed to the disjunct biogeographical distribution of rain forest plants—something that has fascinated biogeographers since Humboldt's time. However, the dispersal agent for these tropical plant lineages remains puzzling. Here, we investigate which frugivory‐related traits may have facilitated past intercontine...
We present a taxonomic revision of Cremastosperma , a genus of Neotropical Annonaceae occurring in lowland to premontane wet forest, mostly in areas surrounding the Andean mountain chain. We recognise 34 species, describing five as new here: from east of the Andes, C.brachypodum Pirie & Chatrou, sp. nov. and C.dolichopodum Pirie & Maas, sp. nov. ,...
A file incorporating the georeferenced part of this data that can be opened in Google Earth
Full tables of Cremastosperma collections data (CSV, XLS and DBF formats)
This paper provides a linear sequence of four subfamilies, 15 tribes and 106 genera of the magnoliid
family Annonaceae, based on state-of-the-art and stable phylogenetic relationships. The linear sequence facilitates
the organisation of Annonaceae herbarium specimens.
Simplification by reduction has occurred many times independently in the floral evolution of
angiosperms. These reductions have often been attributed to changes in reproductive biology. In the
angiosperm plant family Annonaceae, most species have flowers with six petals, and many stamens and
carpels. In the genus Monanthotaxis several deviations fr...
Much of the immense present day biological diversity of Neotropical rainforests originated from the Miocene onwards, a period of geological and ecological upheaval in South America. We assess the impact of the Andean orogeny, drainage of Lake Pebas and closure of the Panama isthmus on two clades of tropical trees (Cremastosperma, ca 31 spp.; and Mo...
Androdioecy is the rarest sexual system among plants. The majority of androdioecious species are herbaceous plants that have evolved from dioecious ancestors. Nevertheless, some woody and androdioecious plants have hermaphrodite ancestors, as in the Annonaceae, where androdioecious genera have arisen several times in different lineages. The majorit...
This preprint has been reviewed and recommended by Peer Community In Evolutionary Biology (http://dx.doi.org/10.24072/pci.evolbiol.100033). Much of the immense present day biological diversity of Neotropical rainforests originated from the Miocene onwards, a period of geological and ecological upheaval in South America. We assess the impact of the...
Xylopia Linnaeus (1759: 1250) is a monophyletic and widely distributed pantropical genus of Annonaceae (Kessler 1993, Dias & Kinoshita 1998, Lopes & Mello-Silva 2014, Stull et al. 2017). Stull et al. (2017) recently revised the infrageneric classification of the genus on the basis of combined data from seed characters and four plastid markers. Thre...
Premise of the study:
The Irano-Turanian region harbors three biodiversity hotspots and ∼25% of Brassicaceae species are endemic to the region. Aethionema (∼61 species) is the sister lineage to the core Brassicaceae and occurs mainly in the Irano-Turanian region. The evolutionary important position of Aethionema makes it an ideal reference for bro...
The molecular clock hypothesis is an important concept in biology. Deviations from a constant rate of nucleotide substitution have been found widely among lineages, genomes, genes and individual sites. Phylogenetic research can accommodate for these differences in applying specific models of evolution. Lineage-specific rate heterogeneity however ca...
Among the endemic biota of Madagascar, skinks are a diverse radiation of lizards that exhibit a striking ecomorphological variation, and could provide an interesting system to study body-form evolution in squamate reptiles. We provide a new phylogenetic hypothesis for Malagasy skinks of the subfamily Scincinae based on an extended molecular dataset...
Friesodielsia and the closely related genera Dasymaschalon, Desmos, Exellia, Gilbertiella and Monanthotaxis (Annonaceae subfamily Annonoideae tribe Uvarieae) are taxonomically problematic, with obscure generic delimitations and poorly known phylogenetic relationships. The present study addresses the polyphyletic status of Friesodielsia, using two n...
As part of an ongoing revision of the genus Monanthotaxis Baill. (Annonaceae), nine new species are described and one variety is reinstated to species rank. Two new species from West Africa (Monanthotaxis aquila P.H.Hoekstra, sp. nov. and Monanthotaxis atewensis P.H.Hoekstra, sp. nov.), four new species from Central Africa (Monanthotaxis couvreurii...
A replacement generic name, Huberantha Chaowasku, is proposed for the recently described genus
Hubera Chaowasku segregated from Polyalthia Blume because the name Hubera has been recommended to be
treated as a later homonym of Huberia DC. (Melastomataceae) by the nomenclature committee for vascular
plants. Consequently, new combinations of twenty-se...
Chapter 3 presents the taxonomic revision of the continental African species of the genus Campylospermum. It comprises 48 species, with C. auriculatum, C. gabonense, C. louisii and C. occidentale being strictly endemic to Gabon. A key to all taxa was constructed. Vegetative characters such as the leaf shape and venation, as well as inflorescence st...
