The role of cone volatiles and thermogenesis in the pollination of Encephalartos cycads with particular reference to E.villosus [PDF]
, 2011 Includes abstract.Includes bibliographical references.Pollination systems of cycads usually involve obligate mutualisms in which the cycad taxa depend on between one and three insect pollinators.
Suinyuy, Terence Nkwanwir
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Climate Predictions Accelerate Decline for Threatened Macrozamia Cycads from Queensland, Australia
Biology, 2012 Changes in the potential habitat of five allopatric species of threatened Macrozamia cycads under scenarios of increased ambient temperature were examined.
Paul I. Forster, Melinda J. Laidlaw
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Cycad forensics: tracing the origin of poached cycads using stable isotapes, trace element concentrations and radiocarbon dating techniques [PDF]
, 2013 In South Africa, the greatest threat to cycad populations is the illegal removal of wild plants for landscaping purposes and collector's gardens, resulting in declining populations that are already threatened with extinction.
Retief, Kirsten
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Characterization of the complete chloroplast genome of endangered Cycads Zamia fischeri Miq. ex Lem
Mitochondrial DNA. Part B. Resources, 2018 The whole chloroplast (cp) genome sequence of Zamia fischeri has been characterized. The cp genome length was 164,767 bp in length, with a GC content of 39.7%, containing a large single copy (LSC) of 90,226 bp, a small single copy (SSC) of 23,223 bp, and
Jin-Yan Lei +2 more
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G-fibers and Florin ring-like structures in Dioon (Zamiaceae)
Botanical Sciences, 2016 Cuticle information and epidermal characters have great potential in systematic studies. However, micromorphology and anatomical studies on cycads are relatively scarce in comparison to similar studies on other gymnosperms.
Andrew P. Vovides, Sonia Galicia
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Phylogenomics and coalescent analyses resolve extant seed plant relationships. [PDF]
PLoS ONE, 2013 The extant seed plants include more than 260,000 species that belong to five main lineages: angiosperms, conifers, cycads, Ginkgo, and gnetophytes. Despite tremendous effort using molecular data, phylogenetic relationships among these five lineages ...
Zhenxiang Xi +2 more
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Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae) [PDF]
, 1991 Bibliography: leaves 123-134.This thesis deals with host relationships in an enigmatic and seemingly primitive group of weevils belonging to the genus Antliarhinus (Coleoptera: Brentidae).
Donaldson, John Sidney
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Perspectives on Endosymbiosis in Coralloid Roots: Association of Cycads and Cyanobacteria
Frontiers in Microbiology, 2019 Past endosymbiotic events allowed photosynthetic organisms to flourish and evolve in terrestrial areas. The precursor of chloroplasts was an ancient photosynthetic cyanobacterium.
Aimee Caye G. Chang +5 more
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Frontiers in Ecology and Evolution, 2020 Biogeographically, cycads were once widely distributed but the extant cycads are restricted to tropical and subtropical regions. They originated ∼ 300 Ma and re-diversified recently around 12 Ma, with the genus Cycas being the most rapidly diversified ...
Ledile T. Mankga +3 more
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