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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
Resistance of Multiple Diploid and Tetraploid Perennial Ryegrass (Lolium perenne L.) Varieties to Three Projected Drought Scenarios for the UK in 2080
Forage plants underpin the livestock industry. Selective breeding, including polyploidization, where genome size is increased by whole genome duplication, changes the productivity and stress tolerance of new varieties. We conducted a growth chamber experiment to investigate the likely responses of Lolium perenne L. to drought, testing four diploid and four...Lee, Mark A. ; Howard-Andrews, Victoria ; Chester, Michael
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Journal article
Pycreus rubidomontanus (Cyperaceae), a widespread but undescribed species from tropical West Africa
Pycreus rubidomontanus is described as a new species. It is relatively widespread in tropical West Africa where it had been confused up to present with P. atrorubidus, a very rare endemic species from Zambia in south-central Africa that probably is known only from the type gathering. Differences between these and...Verloove, Filip ; Browning, Jane ; Mesterhazy, Attila
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Journal article
Progress, challenges and opportunities for Red Listing
Despite its recognition as an important global resource for conservation, the International Union for Conservation of Nature's (IUCN) Red List of Threatened Species only provides assessments of extinction risk for a small and biased subset of known biodiversity. A more complete Red List can better support species-level conservation by indicating...Bachman, Steven ; Field, Richard ; Reader, Tom ; Raimondo, Domitilla ; Donaldson, John …
Conservation, IUCN Red List, Vascular plants, and Extinction risk
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Journal article
Prediction of pathogenicity genes involved in adaptation to a lupin host in the fungal pathogens Botrytis cinerea and Sclerotinia sclerotiorum via comparative genomics
Narrow-leafed lupin is an emerging crop of significance in agriculture, livestock feed and human health food. However, its susceptibility to various diseases is a major obstacle towards increased adoption. Sclerotinia sclerotiorum and Botrytis cinerea – both necrotrophs with broad host-ranges - are reported among the top 10 lupin pathogens. Whole-genome...Mousavi-Derazmahalleh, Mahsa ; Chang, Steven ; Thomas, Geoff ; Derbyshire, Mark ; Bayer, Phillip …
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Journal article
Polyploidy in the Conifer Genus Juniperus: An Unexpectedly High Rate
Recent research suggests that the frequency of polyploidy may have been underestimated in gymnosperms. While there are few reports of polyploids in the genus Juniperus, data are still missing for most species. In this study, we evaluated the extent of polyploidy in Juniperus by conducting the first comprehensive screen across...Farhat, Perla ; Hidalgo, Oriane ; Robert, Thierry ; Siljak-Yakovlev, Sonja ; Leitch, Ilia …
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Journal article
900. Rudbeckia maxima: Compositae.
Rudbeckia maximaNutt. (Compositae: Heliantheae: Rud-beckiinae) is described and illustrated. Cultivation, propagation andavailability notes are provided. The genusRudbeckiais discussed, and theposition ofR. maximacommented on, as well as the somewhat uniquekey character (the reflectiveness of the leaves under UV light) that hasbeen used to distinguish this and two other species. The relationships...Hind, Nicholas
Vernacular names, Descriptors, Rudbeckia maxima, Etymology, Cultivation, Geographical distribution, Conservation status, Phenology, and Habitats
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Journal article
901. Helianthus salicifolius: Compositae.
Helianthus salicifolius A. Dietr. (Compositae: Heliantheae:Helianthinae) is described and illustrated. Cultivation, propagation,pests and diseases and availability notes, of both the species and cultivars,are provided. The genusHelianthus, and the position ofH. salicifoliusiscommented on, as well as its similarity toH. angustifolius. Distinguishingcharacters between these two species are given. Comments are providedon types...Hind, Nicholas ; Smith, Alison
Vernacular names, Descriptors, Helianthus salicifolius, Phenology, Cultivation, Geographical distribution, Conservation status, Etymology, and Habitats
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Journal article
898. Helichrysum ‘Sun Burst’ Compositae.
A new cultivar, Helichrysum‘Sun Burst’ (Compositae: Inuleae:Gnaphaliinae), is introduced, described, and illustrated, based on mate-rial derived from a cross between a Turkish collection of H. orientale and H. arwae from the Yemen Arab Republic, growing in the Melon Yard,Alpine Nursery at the Royal Botanic Gardens, Kew. Cultivation andpropagation notes are...Hind, Nicholas ; Strange, Kit
Geographical distribution, Cultivation, Descriptors, Helichrysum, and Phenology