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Seed Cone Anatomy of Cheirolepidiaceae (Coniferales): Reinterpreting Pararaucaria patagonica Wieland

Creator:: Escapa, Ignacio H., Rothwell, Gar W., Stockey, Ruth A., and Cuneo, N. Ruben
Abstract:: Premise of the study: Seed cone morphology and anatomy reflect some of the most important changes in the phylogeny and evolutionary biology of conifers. Reexamination of the enigmatic Jurassic seed cone Pararaucaria patagonica reveals previously unknown systematically informative characters that demonstrate affinities with the Cheirolepidiaceae. This paper documents, for the...
Resource Type:: Article
Full Text:: / © 2012 Botanical Society of America Throughout the evolutionary history of conifers phylogeneti

Host jumping onto close relatives and across kingdoms by Tyrannicordyceps (Clavicipitaceae) gen. nov. and Ustilaginoidea_(Clavicipitaceae)

Creator:: Kepler, Ryan M., Sung, Gi-Ho, Harada, Yukio, Tanaka, Kazuaki, Tanaka, Eiji, Hosoya, Tsuyoshi, Bischoff, Joseph F., and Spatafora, Joseph W.
Abstract:: Premise of study: This research seeks to advance understanding of conditions allowing movement of fungal pathogens among hosts. The family Clavicipitaceae contains fungal pathogens exploiting hosts across three kingdoms of life in a pattern that features multiple interkingdom host shifts among plants, animals, and fungi. The tribe Ustilaginoideae potentially represents...
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Full Text:: Botanical Society of America The tendency of fungal pathogens to switch hosts remains an important fi

Evolutionary relationships among Pinus (Pinaceae) subsections inferred from multiple low-copy nuclear loci

Creator:: Syring, John, Willyard, Ann, Cronn, Richard, and Liston, Aaron
Abstract:: Sequence data from nrITS and cpDNA have failed to fully resolve phylogenetic relationships among Pinus species. Four low‐copy nuclear genes, developed from the screening of 73 mapped conifer anchor loci, were sequenced from 12 species representing all subsections. Individual loci do not uniformly support either the nrITS or cpDNA hypotheses...
Resource Type:: Article
Full Text:: ; Cronn et al., 2003; Small et al., 2004). The large nuclear genome of pines (22– 37 pg/2C; Grotkopp et al

Genetic diversity of the narrow endemic Astragalus oniciformis (Fabaceae)

Creator:: Alexander, J. Andrew, Liston, Aaron, and Popovich, Steve J.
Abstract:: Astragalus oniciformis Barneby is a narrow endemic xerophyte of the upper Snake River Plain of central Idaho, USA, where it inhabits stabilized, aeolian sand deposits and previously burned, sandy sites over Quaternary basalt flows. The objective of this study was to determine the levels and distribution of genetic differentiation within...
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Full Text:: .) Gaertn. Biological Journal of the Linnean Society 70: 147– 160. KOJIMA, T., T. NAGAOKA, K. NODA, AND Y

Internal transcribed spacer region evolution in Larix and Pseudotsuga (Pinaceae)

Creator:: Gernandt, David S. and Liston, Aaron
Abstract:: The nuclear ribosomal DNA (nrDNA) internal transcribed spacer (ITS) region has been characterized in the sister genera Larix and Pseudotsuga (Pinaceae). Complete sequences were obtained for seven species of Larix from North America and Eurasia and five species of Pseudotsuga from western North America and eastern Asia. ITS region lengths...
Resource Type:: Article
Full Text:: were obtained for seven species of Larix from North America and Eurasia and five species of Pseudotsuga

Population structure and genetic diversity of Botrychium pumicola (Ophioglossaceae) based on inter-simple sequence repeats (ISSR)

Creator:: Camacho, Francisco J. and Liston, Aaron
Abstract:: Species of Botrychium reproduce by spores that form subterranean gametophytes and a few, like B. pumicola, also reproduce asexually with subterranean sporophytic gemmae. The goal of this study was to examine the genetic diversity of B. pumicola populations and to better understand the role of gemmae. Ninety-nine individuals from three...
Resource Type:: Article
Full Text:: . Ophioglossaceae. In Flora of North America Editorial Committee [eds.], Flora of North America, vol. 2, 84–106

Repeat intercontinental dispersal and Pleistocene speciation in disjunct Mediterranean and desert Senecio (Asteraceae)

Creator:: Coleman, Max, Liston, Aaron, Kadereit, Joachim W., and Abbott, Richard J.
Abstract:: To explore the biogeographic history of Mediterranean/arid plant disjunctions, Old and New World Senecio sect. Senecio were analyzed phylogenetically using nuclear ribosomal DNA sequences (ITS). A clade corresponding to sect. Senecio was strongly supported. Area optimization indicated this clade to be of southern African origin. The Mediterranean and southern African...
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Full Text:: : evidence from cpDNA RFLPs. Botanical Journal of the Linnean Society 136: 379– 392. COLEMAN, M., D. G

Chloroplast DNA characters, phylogeny, and classification of Lathyrus (Fabaceae)

Creator:: Asmussen, Conny B. and Liston, Aaron
Abstract:: Mapped cpDNA restriction site characters were analyzed cladistically and the resulting phylogenetic hypotheses were used to test monophyly and relationships of the infrageneric classification of Lathyrus (Fabaceae) proposed by Kupicha (1983, Notes from the Royal Botanic Garden Edinburgh 41: 209–244). The validity of previously proposed classification systems and questions presented...
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Full Text:: and The University of Arizona, USA; University of California Botanical Garden, Berkeley, USA; Botanic

Exploring the fossil history of pleurocarpous mosses: Tricostaceae fam. nov. from the Cretaceous of Vancouver Island, Canada

Creator:: Shelton, Glenn W. K., Stockey, Ruth A., Rothwell, Gar W., and Tomescu, Alexandru M. F.
Abstract:: PREMISE OF THE STUDY: Mosses, very diverse in modern ecosystems, are currently underrepresented in the fossil record. For the pre-Cenozoic, fossil mosses are known almost exclusively from compression fossils, while anatomical preservation, which is much more taxonomically informative, is rare. The Lower Cretaceous of Vancouver Island (British Columbia, Canada) hosts...
Resource Type:: Article
Full Text:: American Journal of Botany Exploring the fossil history of

Middle Jurassic evidence for the origin of Cupressaceae: A paleobotanical context for the roles of regulatory genetics and development in the evolution of conifer seed cones

Creator:: Spencer, Alan R. T., Mapes, Gene, Bateman, Richard M., Hilton, Jason, and Rothwell, Gar W.
Abstract:: Premise of the study: Triassic and Jurassic fossils record structural changes in conifer seed cones through time, provide the earliest evidence for crown-group conifer clades, and further clarify sister-group relationships of modern conifer families. A new and distinct seed-cone from the Isle of Skye in western Scotland provides the oldest...
Resource Type:: Article
Full Text:: .1500121 10.3732/ajb.1500121 Botanical Society of America Version of Record http

ScholarsArchive@OSU

Seed Cone Anatomy of Cheirolepidiaceae (Coniferales): Reinterpreting Pararaucaria patagonica Wieland

Host jumping onto close relatives and across kingdoms by Tyrannicordyceps (Clavicipitaceae) gen. nov. and Ustilaginoidea_(Clavicipitaceae)

Evolutionary relationships among Pinus (Pinaceae) subsections inferred from multiple low-copy nuclear loci

Genetic diversity of the narrow endemic Astragalus oniciformis (Fabaceae)

Internal transcribed spacer region evolution in Larix and Pseudotsuga (Pinaceae)

Population structure and genetic diversity of Botrychium pumicola (Ophioglossaceae) based on inter-simple sequence repeats (ISSR)

Repeat intercontinental dispersal and Pleistocene speciation in disjunct Mediterranean and desert Senecio (Asteraceae)

Chloroplast DNA characters, phylogeny, and classification of Lathyrus (Fabaceae)

Exploring the fossil history of pleurocarpous mosses: Tricostaceae fam. nov. from the Cretaceous of Vancouver Island, Canada

Middle Jurassic evidence for the origin of Cupressaceae: A paleobotanical context for the roles of regulatory genetics and development in the evolution of conifer seed cones

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