ash , (genus Fraxinus ), genus of 45-65 species of trees or shrubs (family Oleaceae ) primarily distributed throughout the Northern Hemisphere. (britannica.com)
In this study, the genetic diversity within 'Ca. P. asteris' and 'Ca. P. fraxini' was studied in five urban tree species: Croton species (Euphorbiaceae), Fraxinus uhdei (Oleaceae), Magnolia grandiflora (Magnoliaceae), Populus nigra (Salicaceae) and Quercus humboldtii (Fagaceae). (uibk.ac.at)
Fraxinus uhdei, commonly known as tropical ash or Shamel ash, is a species of tree native to Mexico and Central America. (wikipedia.org)
Shamel Ash (Fraxinus uhdei) is a severe allergen. (pollenlibrary.com)
The Shamel ash (Fraxinus uhdei), also called the evergreen ash or Mexican ash, grows in the low desert and is semi-deciduous in colder climates. (gardenguides.com)
Shamel Ashes (Fraxinus uhdei) at the Makawao Forest Reserve. (lifetrips.net)
Species4
Like other species in the section Melioides, Fraxinus uhdei is dioecious, with male and female flowers produced on separate individuals. (wikipedia.org)
The tropical ash was originally described as a variety of Fraxinus americana (white ash) by Theodor Wenzig [es] in 1883 and was separated as a different species in 1907 by Alexander von Lingelsheim. (wikipedia.org)
In Bogotá 'Candidatus Phytoplasma asteris' and ' Candidatus Phytoplasma fraxini', infect 11 species of urban trees, weeds, grass, potato and strawberry. (uibk.ac.at)
Two species-specific hydrolysis probes, AJ-16SrI-Cy5.5 and AJ-16SrVII-TexRed, were designed to detect 'Ca. P. asteris' and 'Ca. P. fraxini' respectively, using the AJ-16Sr-F/AJ-16Sr-R primers. (uibk.ac.at)
Candidatus Phytoplasma1
Candidatus Phytoplasma asteris' and 'Candidatus Phytoplasma fraxini' are the major groups of phytoplasma in the area of Bogotá. (uibk.ac.at)
Phytoplasma1
Ca. P. fraxini' isolates belonged to a new subgroup named 16SrVII-G, with a restriction pattern similar to that of 16SrVII-A. To complement the identification of the phytoplasma strains, we amplified nonribosomal genes such as leuS and secA. (uibk.ac.at)
The most important of these are the white ash ( Fraxinus americana ) and the green ash ( F. pennsylvanica ), which grow throughout the eastern and much of the central United States and northward into parts of Canada. (britannica.com)
Unexpectedly, it was observed that in 16 trees in which 16S rRNA gene analysis showed the presence of 'Ca. P. fraxini' only, the leuS or secA primers amplified sequences exclusively affiliated to 'Ca. P. asteris. (uibk.ac.at)
Specific2
The specific epithet uhdei refers to Carl Uhde, a German plant collector who explored Mexico in the 1840s. (wikipedia.org)
Multiplex reactions allowed the specific quantification of 'Ca. P. asteris', 'Ca. P. fraxini' in comparison to the normalizer. (uibk.ac.at)
Genus2
The cosmopolitan genus Fraxinus , which comprises about 40 species of temperate trees and shrubs occupying various habitats in the Northern Hemisphere, represents a useful model to study speciation in long-lived angiosperms. (plos.org)
In Greek mythology , the Meliai were nymphs of the ash, perhaps specifically of the Manna Ash ( Fraxinus ornus ), as dryads were nymphs of the oak. (academickids.com)
Refers1
The specific epithet uhdei refers to Carl Uhde, a German plant collector who explored Mexico in the 1840s. (wikipedia.org)
Section1
Another intercontinental dispersal originating from the Eurasian section of Fraxinus could be dated from the Miocene and resulted in the speciation of F. nigra in North America. (plos.org)