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Journal article
Endopolyploidy in Plants
Leitch, I. J. ; Dodsworth, S.
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Book chapter
“BIFloraExplorer”: A Taxonomic, Genetic, and Ecological Data Resource for the Vascular Plants of Britain and Ireland.
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Journal article
Interactions between plant genome size, nutrients and herbivory by rabbits, molluscs and insects on a temperate grassland
Angiosperm genome sizes (GS) vary ca 2400-fold. Recent research has shown that GS influences plant abundance, and plant competition. There are also tantalizing reports that herbivores may select plants as food dependent on their GS. To test the hypothesis that GS plays a role in shaping plant communities under herbivore...Guignard, Maïté ; Crawley, Michael ; Kovalenko, Dasha ; Nichols, Richard ; Trimmer, Mark …
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Journal article
Remarkable variation of ribosomal DNA organization and copy number in gnetophytes, a distinct lineage of gymnosperms
INTRODUCTION: Gnetophytes, comprising the genera Ephedra, Gnetum and Welwitschia, are an understudied, enigmatic lineage of gymnosperms with a controversial phylogenetic relationship to other seed plants. Here we examined the organization of ribosomal DNA (rDNA) across representative species. METHODS: We applied high-throughput sequencing approaches to isolate and reconstruct rDNA units and...Wang, W ; Wan, T ; Becher, H ; Kuderova, A ; Leitch, Ilia …
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Journal article
The Application of Flow Cytometry for Estimating Genome Size, Ploidy Level Endopolyploidy, and Reproductive Modes in Plants
Over the years, the amount of DNA in a nucleus (genome size) has been estimated using a variety of methods, but increasingly, flow cytometry (FCM) has become the method of choice. The popularity of this technique lies in the ease of sample preparation and in the large number of particles... -
Master's dissertation
Genome size in the UK Fabaceae flora and how this relates to their nitrogen and water tolerance
Genome size (GS) is defined as the total DNA amount in the unreplicated nucleus of an organism, often used synonymously with ‘1C value’. GS varies greatly in flowering plants. Nitrogen (N) and water are considered major limiting factors for plant growth, and their availability could correlate with plants’ GS. Nitrogen...Pollitt, Lauren
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Journal article
The Plant DNA C‐values database (release 7.1): an updated online repository of plant genome size data for comparative studies
In recent decades, interest in plant genome size (i.e. the total amount of DNA in the unreplicated haploid nucleus; Greilhuber et al., 2005) has been growing exponentially as the biological, evolutionary and ecological significance of this key biodiversity trait is increasingly recognized (e.g. see reviews by Greilhuber & Leitch, 2013;...Pellicer, Jaume ; Leitch, Ilia J.
algae , flow cytometry, C‐values, land plants, and plant DNA C‐values database
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Journal article
Evolutionary dynamics of transposable elements and satellite DNAs in polyploid Spartina species
Repeated sequences and polyploidy play a central role in plant genome dynamics. Here, we analyze the evolutionary dynamics of repeats in tetraploid and hexaploid Spartina species that diverged during the last 10 million years within the Chloridoideae, one of the poorest investigated grass lineages. From high-throughput genome sequencing, we annotated...Giraud, Delphine ; Lima, Oscar ; Huteau, Virginie ; Coriton, Olivier ; Boutte, Julien …
Transposable elements, Genome dynamics , Polyploidy, Spartina, and Satellite DNA
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Doctoral thesis
Molecular and Genome Evolution in the Malesian Slipper Orchids (Paphiopedilum section Barbata).
Paphiopedilum section Barbata (Cypripedioideae: Orchidaceae) is an evolutionarily young and charismatic group of terrestrial orchids native to the Himalayas, Indochina and Malesia. It contains several interesting species complexes, variable chromosome numbers (2n=28-42) and genome sizes (2C=55-70 pg) with hybrid speciation suspected on the basis of morphological data. In Chapter 1,...Yap, Jing Wei
Molecular evolution, Paphiopedilum section Barbata, Malesia, and Genome evolution
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Master's dissertation
Does climate influence genome size diversity? A study of genome size-environment associations across the Madagascar grass flora
Repetitive DNA accumulation and whole genome duplication are common across angiosperm lineages, resulting in some of the largest ever-recorded genomes, yet the majority of angiosperm species have small genomes. This suggests selection may be acting to reduce genome size (GS), and there is growing evidence of environmental factors influencing GS...Morton, Joseph
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Journal article
Giant Fern Genomes Show Complex Evolution Patterns: A Comparative Analysis in Two Species of Tmesipteris (Psilotaceae).
Giant genomes are rare across the plant kingdom and their study has focused almost exclusively on angiosperms and gymnosperms. The scarce genetic data that are available for ferns, however, indicate differences in their genome organization and a lower dynamism compared to other plant groups. Tmesipteris is a small genus of...
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