Results 11 to 20 of about 668 (175)
A two-photon fluorescence micro-spectroscopy method for chemotaxonomic characterization of fossil resins. [PDF]
Appl Plant SciAbstract Premise Amber, a fossilized chemical defensive exudate, is important for understanding ancient plant–insect/pathogen interactions, yet its botanical origins, especially for Cretaceous amber, remain enigmatic. Here, we develop and apply a fluorescence micro‐spectroscopy approach within the context of a larger study on the provenance of amber ...
McCoy VE +6 more
europepmc +2 more sources
Leaf Size in Conifers: Global Associations With Climate and Evolutionary History. [PDF]
Glob Chang BiolGlobal patterns in leaf size are linked to climatic trade‐offs, so we explore these relationships in a major group of plants, the conifers. Using contemporary phylogenetic methods, we show that conifers display a strong pattern of evolutionary conservatism in the association of leaf size with climate, and highlight that these relationships are driven ...
Bandow KI +5 more
europepmc +2 more sources
Drought avoidance and vulnerability in the Australian Araucariaceae [PDF]
Tree Physiology, 2015 The Araucariaceae is an iconic tree family. Once globally important, the Araucariaceae declined dramatically over the Cenozoic period. Increasing aridity is thought to be responsible for extinction and range contraction of Araucariaceae in Australia, yet little is known about how these trees respond to water stress.
Zimmer, Heidi C. +4 more
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Species-level determination of closely related araucarian resins using FTIR spectroscopy and its implications for the provenance of New Zealand amber [PDF]
PeerJ, 2015 Some higher plants, both angiosperms and gymnosperms, can produce resins and some of these resins can polymerize and fossilize to form ambers. Various physical and chemical techniques have been used to identify and profile different plant resins and have
Leyla J. Seyfullah +2 more
doaj +2 more sources
Novel and Conserved miRNAs Among Brazilian Pine and Other Gymnosperms
Frontiers in Genetics, 2019 The knowledge about plant miRNAs has increased exponentially, with thousands of miRNAs been reported in different plant taxa using high throughput sequencing technologies and bioinformatic tools.
José Henrique Galdino +5 more
doaj +1 more source
Phylogenetic biogeography of Araucaria (Araucariaceae)
Проблемы ботаники южной сибири и монголии, 2020 The analysis of molecular data of all 19 recent species of the genus Araucaria Juss. (Araucariaceae) wascarried out and original cladogramm was build. Based on the cladogramm, the map of correlations of the phylogeneticrelationships and the distribution of all recent Araucaria species is proposed.
A. A. Mikhaylova +3 more
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Revealing the diversity of amber source plants from the Early Cretaceous Crato Formation, Brazil
BMC Evolutionary Biology, 2020 Background Amber has been reported from the Early Cretaceous Crato Formation, as isolated clasts or within plant tissues. Undescribed cones of uncertain gymnosperm affinity have also been recovered with amber preserved in situ.
Leyla J. Seyfullah +7 more
doaj +1 more source
Evolutionary diversification of new Caledonian Araucaria.
PLoS ONE, 2014 New Caledonia is a global biodiversity hotspot. Hypotheses for its biotic richness suggest either that the island is a 'museum' for an old Gondwana biota or alternatively it has developed following relatively recent long distance dispersal and in situ ...
Mai Lan Kranitz +11 more
doaj +1 more source
Revista Eletrônica Científica da UERGS, 2020 Os dados fazem parte de uma tese de doutorado que objetivou desenvolver uma metodologia para avaliar por métodos físicos e químicos os lenhos carbonizados artificialmente de três espécimes da família Araucariaceae: Araucaria angustifolia, Araucaria ...
Daniela Mueller de Lara, Simone Stulp
doaj +1 more source
Arachidonic and eicosapentaenoic acids in Araucariaceae, a unique feature among seed plants
Oléagineux, Corps gras, Lipides, 2000 It is generally admitted that seed plants (spermaphytes) are unable to synthesize either arachidonic or eicosapentaenoic acids (AA and EPA), the classic essential fatty acids in animals.
Wolff Robert L. +6 more
doaj +1 more source