196 Works

Age-related pharmacodynamics in a bumblebee-microsporidian system mirror similar patterns in vertebrates

Arran J. Folly, Philip C. Stevenson & Mark J. F. Brown
Immune systems provide a key defence against diseases. However, they are not a panacea and so both vertebrates and invertebrates co-opt naturally occurring bioactive compounds to treat themselves against parasites and pathogens. In vertebrates this co-option is complex, with pharmacodynamics leading to differential effects of treatment at different life stages, which may reflect age-linked differences in the immune system. However, our understanding of pharmacodynamics in invertebrates is almost non-existent. Critically, this knowledge may elucidate broad...

Sustainable yam markets for conservation and food security in Madagascar?

Mamy Tiana Rajaonah

Fitahirizana Ny Oviala. Azo Atao Tsara Ny Mitahiry Ny Oviala Rehefa Matoa Tsara Ny Vokatra.

Mamy Tiana Rajaonah

Ostropales: Thelenellaceae, including the genus Thelenella.

A. Orange & Paul Cannon

Peltigerales: Pannariaceae, including the genera Fuscopannaria, Leptogidium, Nevesia, Pannaria, Parmeliella, Pectenia, Protopannaria and Psoroma.

Paul Cannon, A. Aptroot, B. Coppins, N. Sanderson & J. Simkin

Orchid Research Newsletter no. 72

Andre Schuiteman

Orchid Research Newsletter no. 74

Andre Schuiteman

ColFungi: Colombian resources for fungi made accessible

Ester Gaya

Orchid Research Newsletter no. 61

Alec Pridgeon

Orchid Research Newsletter no. 58

Alec Pridgeon

Orchid Research Newsletter no. 59

Alec Pridgeon

Orchid Research Newsletter no. 57

Alec Pridgeon

Orchid Research Newsletter no. 55

Alec Pridgeon

Orchid Research Newsletter no. 56

Alec Pridgeon

Orchid Research Newsletter no. 50

Alec Pridgeon

Orchid Research NEwsletter no. 46

Phillip Cribb

Do functional and floral uniqueness vary with environmental stress gradients?

Michael Rees

A green deal for seeds might not be a good deal.

Rida Ajmal

Data from: Phylogenetic systematics of subtribe Spiranthinae (Orchidaceae: Orchidoideae: Cranichideae) based on nuclear and plastid DNA sequences of a nearly complete generic sample

Gerardo A. Salazar, Joao A.N. Batista, Lidia I. Cabrera, Cassio Van Den Berg, W. Mark Whitten, Eric C. Smidt, Cristiano R. Buzatto, Rodrigo B. Singer, Gunter Gerlach, Rolando Jimenez-Machorro, Jose A. Radins, Irma S. Insaurralde, Leonardo R.S. Guimaraes, Fabio De Barros, Francisco Tobar, Jose L. Linares, Ernesto Mujica, Robert L. Dressler, Mario A. Blanco, Eric Hagsater & Mark W. Chase
Subtribe Spiranthinae is the most species-rich lineage of terrestrial Neotropical orchids, encompassing > 500 species and 40 genera. We conducted maximum parsimony and maximum likelihood phylogenetic analyses of DNA sequence data of plastid matK-trnK and trnL-trnF and nuclear ribosomal ITS sequences for 36 genera and 182 species of Spiranthinae plus appropriate outgroups. The results strongly support monophyly of Spiranthinae (minus Discyphus, Discyphinae and Galeottiella, Galeottiellinae) and five major lineages, namely monospecific Cotylolabium (sister to the...

Data from: Genetic diversity maintained among fragmented populations of a tree undergoing range contraction

James S. Borrell, Nian Wang, Richard A. Nichols & Richard J. A. Buggs
Dwarf birch (Betula nana) has a widespread boreal distribution but has declined significantly in Britain where populations are now highly fragmented. We analysed the genetic diversity of these fragmented populations using markers that differ in mutation rate: conventional microsatellites markers (PCR-SSRs), RADseq generated transition and transversion SNPs (RAD-SNPs), and microsatellite markers mined from RADseq reads (RAD-SSRs). We estimated the current population sizes by census and indirectly, from the linkage disequilibrium found in the genetic surveys....

Data from: The search for loci under selection: trends, biases and progress

Collin W. Ahrens, Paul D. Rymer, Adam Stow, Jason Bragg, Shannon Dillon, Kate D. L. Umbers & Rachael Y. Dudaniec
Detecting genetic variants under selection using FST outlier analysis (OA) and environmental association analyses (EAA) are popular approaches that provide insight into the genetic basis of local adaptation. Despite the frequent use of OA and EAA approaches and their increasing attractiveness for detecting signatures of selection, their application to field-based empirical data have not been synthesized. Here, we review 66 empirical studies that use Single Nucleotide Polymorphisms (SNPs) in OA and EAA. We report trends...

Data from: A new generic system for the pantropical Caesalpinia group (Leguminosae)

Edeline Gagnon, Anne Bruneau, Colin E. Hughes, Luciano Paganucci De Queiroz, Gwilym P. Lewis & Luciano De Queiroz
The Caesalpinia group is a large pantropical clade of ca. 205 species in subfamily Caesalpinioideae (Leguminosae) in which generic delimitation has been in a state of considerable flux. Here we present new phylogenetic analyses based on five plastid and one nuclear ribosomal marker, with dense taxon sampling including 172 (84%) of the species and representatives of all previously described genera in the Caesalpinia group. These analyses show that the current classification of the Caesalpinia group...

Data from: Ecological speciation in sympatric palms: 2. pre- and post-zygotic isolation

H. Hipperson, L.T. Dunning, W.J. Baker, R.K. Butlin, I. Hutton, A.S.T. Papadopulos, C.M. Smadja, T.C. Wilson, C. Devaux, Vincent Savolainen, R. K. Butlin, T. C. Wilson, W. J. Baker & A. S. T. Papadopulos
We evaluated reproductive isolation in two species of palms (Howea) that have evolved sympatrically on Lord Howe Island (LHI, Australia). We estimated the strength of some pre- and post-zygotic mechanisms in maintaining current species boundaries. We found that flowering time displacement between species is consistent across in and ex situ common gardens and is thus partly genetically determined. On LHI, pre-zygotic isolation due solely to flowering displacement was 97% for H. belmoreana and 80% for...

Data from: Origin of angiosperms and the puzzle of the Jurassic gap

Hong-Tao Li, Ting-Shuang Yi, Lian-Ming Gao, Peng-Fei Ma, Ting Zhang, Jun-Bo Yang, Matthew A. Gitzendanner, Peter W. Fritsch, Jie Cai, Yang Luo, Hong Wang, Michelle Van Der Bank, Shu-Dong Zhang, Qing-Feng Wang, Jian Wang, Zhi-Rong Zhang, Chao-Nan Fu, Jing Yang, Peter M. Hollingsworth, Mark W. Chase, Douglas E. Soltis, Pamela S. Soltis & De-Zhu Li
Angiosperms are by far the most species-rich clade of land plants, but their origin and early evolutionary history remain poorly understood. We reconstructed angiosperm phylogeny based on 80 genes from 2,881 plastid genomes representing 85% of extant families and all orders. With a well-resolved plastid tree and 62 fossil calibrations, we dated the origin of the crown angiosperms to the Upper Triassic, with major angiosperm radiations occurring in the Jurassic and Lower Cretaceous. This estimated...

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