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L H Melville - One of the best experts on this subject based on the ideXlab platform.

  • biology of the ectomycorrhizal genus rhizopogon iii influence of co cultured conifer species on mycorrhizal specificity with the arbutoid hosts Arctostaphylos uva ursi and arbutus menziesii
    New Phytologist, 1997
    Co-Authors: Randy Molina, Donaraye Mckay, Jane E. Smith, L H Melville
    Abstract:

    Seedlings of Pseudotsuga menziesii (Mirb.) Franco, Pinus ponderosa Dougl. ex Laws, Arbutus menziesii Pursh., and cuttings of Arctostaphylos uva-ursi (L.) Spreng were grown in monoculture and in conifer-hardwood dual-culture combinations in the glasshouse and inoculated with spore slurries of six Rhizopogon species. The primary objectives were to assess and compare the pattern of host specificity between symbionts and to study the influence of co-cultured plants on ectomycorrhiza development. The Rhizopogon spp. ranged from genus-specific to multiple-host compatible. In monoculture, four Rhizopogon sp. (R. ellenae Smith, R. occidentalis Zeller & Dodge, R. smithii Hosford and R. subcaerulescens Smith) formed ectomycorrhizas with Pinus ponderosa, and two Rhizopogon sp. (R. parksii Smith and R. vinicolor Smith) formed ectomycorrhizas with Pseudotsuga menziesii. None of the fungi tested developed ectomycorrhizas on Arbutus menziesii or Arctostaphylos uva-ursi in monoculture. In dual culture, three of the four Rhizopogon species (R. ellenae, R. occidentalis and R. subcaerulescens) that formed ectomycorrhizas on Pinus ponderosa, formed some ectomycorrhizas on Arbutus menziesii and Arctostaphylos uva-ursi. Rhizopogon parksii and R. vinicolor only formed ectomycorrhizas on Pseudotsuga menziesii.

  • iii influence of co cultured conifer species on mycorrhizal specificity with the arbutoid hosts Arctostaphylos uva ursi and arbutus menziesii
    1997
    Co-Authors: Randy M Olina, Ane J E S Mith, L H Melville
    Abstract:

    summary Seedlings of Pseudotsuga menziesii (Mirb.) Franco, Pinus ponderosa Dougl. ex Laws, Arbutus menziesii Pursh., and cuttings of Arctostaphylos uva-ursi (L.) Spreng were grown in monoculture and in conifer-hardwood dual-culture combinations in the glasshouse and inoculated with spore slurries of six Rhizopogon species. The primary objectives were to assess and compare the pattern of host specificity between symbionts and to study the influence of co-cultured plants on ectomycorrhiza development. The Rhizopogon spp. ranged from genus-specific to multiple-host compatible. In monoculture, four Rhizopogon sp. (R. ellenae Smith, R. occidentalis Zeller & Dodge, R. smithii Hosford and R. subcaerulescens Smith) formed ectomycorrhizas with Pinus ponderosa, and two Rhizopogon sp. (R. parksii Smith and R. vinicolor Smith) formed ectomycorrhizas with Pseudotsuga menziesii. None of the fungi tested developed ectomycorrhizas on Arbutus menziesii or Arctostaphylos uva-ursi in monoculture. In dual culture, three of the four Rhizopogon species (R. ellenae, R. occidentalis and R. subcaerulescens) that formed ectomycorrhizas on Pinus ponderosa, formed some ectomycorrhizas on Arbutus menziesii and Arctostaphylos uva-ursi. Rhizopogon parksii and R. vinicolor only formed ectomycorrhizas on Pseudotsuga menziesii.

Thomas V Parker - One of the best experts on this subject based on the ideXlab platform.

  • seed bank divergence between Arctostaphylos adans ericaceae and ceanothus l rhamnaceae suggests different seed predator interactions
    Ecologia mediterranea: Revue internationale d'écologie méditerranéenne = International Journal of Mediterranean Ecology, 2015
    Co-Authors: Thomas V Parker
    Abstract:

    francaisDeux genres d’arbustes dominants dans le chaparral de Californie, Arctostaphylos et Ceanothus, utilisent les banques persistantes de semences dans le sol pour le retablissement de leurs populations apres un incendie. La production de semences et la pluie de semences est sujette a une predation considerable par la communaute animale. Ces genres different de maniere significative dans la taille de leur semence. Contrairement a la theorie de banque de semences, les Arctostaphylos, avec les semences les plus grosses, peuvent accumuler des banques de semences sensiblement plus grandes. Des donnees provenant de la litterature et du terrain sont utilisees afin de proposer un modele permettant d’expliquer les differences dans les densites de banque de semences, et notamment le fait que la communaute animale impliquee dans la predation de semences differe entre les deux genres. EnglishTwo of the dominant shrub genera in California chaparral, Arctostaphylos and Ceanothus, utilize persistent soil seed banks for post-fire recovery of their populations. Seed production and seed rain is subject to considerable predation by the animal community. These genera differ significantly in their seed size, and contrary to seed bank theory, Arctostaphylos with the larger seeds are able to accumulate substantially larger seed banks. Literature and field data are used to propose a model to account for these differences in seed bank densities, specifically, that the animal community involved in seed predation differs between the two genera.

  • Number of fruit stored in caches.
    2015
    Co-Authors: Thomas V Parker
    Abstract:

    (A) The average number of fruit per cache was slightly over 4 fruit (4.1 + 0.32 fruit [mean and standard error]; dark line shows median). (B) The histogram illustrates the range and distribution of fruit number per cache. Arctostaphylos fruit range in seed number and viability, but average between 3 and 7 viable seed per fruit as a way of assessing potential cache size.

  • phylogeny and biogeography of the arbutoideae ericaceae implications for the madrean tethyan hypothesis
    Systematic Botany, 2009
    Co-Authors: Lena C Hileman, Michael C Vasey, Thomas V Parker
    Abstract:

    Abstract Phylogenetic relationships within subfamily Arbutoideae (Ericaceae) were estimated using parsimony and maximum likelihood analyses of sequence data from the ITS region and part of the large subunit of nuclear ribosomal DNA. The data support the monophyly of Arctostaphylos, Arctous, and Comarostaphylis, but suggest that Arbutus is not monophyletic, with Mediterranean Basin species more closely related to the clade containing Arctostaphylos, Arctous, Comarostaphylis, Ornithostaphylos, and Xylococcus than to the western North American species of Arbutus. Calibration of branch lengths with the fossil record suggests that a vicariance event occurred among members of the Arbutoideae between western North America and the Mediterranean Basin at the Paleogene/Neogene boundary, consistent with the Madrean-Tethyan hypothesis. Communicating Editor: Kathleen A. Kron

  • taxonomic revisions in the genus Arctostaphylos ericaceae
    Madroño, 2007
    Co-Authors: Thomas V Parker, Michael C Vasey, Jon E Keeley
    Abstract:

    Changes are made in the nomenclature of species and subspecies in the genus Arctostaphylos (Ericaceae). In this study, the focus is on species found in the coast ranges of California. Changes are made in A. nortensis from the area around the Oregon border with California, in the A. nevadensis complex in the North Coast Ranges, in the A. nummularia complex of the north to central coast, in the A. tomentosa complex of the central coast to the Channel Islands, and in the A. hookeri and A. pilosula complex of the central coast. Also discussed are other changes presented elsewhere that will affect the Arctostaphylos treatment in the next edition of the Jepson Manual.

  • ectomycorrhizal fungi associated with Arctostaphylos contribute to pseudotsuga menziesii establishment
    Botany, 1999
    Co-Authors: Thomas R Horton, Thomas D Bruns, Thomas V Parker
    Abstract:

    Chaparral on the central coast of California can occur as relatively stable patches of ectomycorrhizal Arctostaphylos directly adjacent to arbuscular mycorrhizal Adenostoma. Vegetation surveys and ...

J. F. Bain - One of the best experts on this subject based on the ideXlab platform.

  • megacephalus
    2019
    Co-Authors: 307 K. Mcfadyen, J. F. Bain, B. Barungan, J. Golden
    Abstract:

    Senecio megacephalus Nutt.séneçon à grands capituleslarge-flowered ragwortLocality, associated species and coordinates withheld (rare); contact the University of Lethbridge Herbarium (bain@uleth.ca) for more information.T. ChisholmN.E. facing grassy slope intersepersed with rocks; Arctostaphylos uva-ursi and Juniperus horizontalis as groundcover1788Locality, associated species and coordinates withheld (rare); contact the University of Lethbridge Herbarium (bain@uleth.ca) for more information.>2

  • elegans
    2019
    Co-Authors: 474 K. Mcfadyen, T. Chisholm, J. F. Bain
    Abstract:

    Anticlea elegans (Pursh) Rydb.zigadène glauquemountain death camasMount Ptolemy TrailT. ChisholmTrailside; clearing of mainly Pinus contorta forest; rocky shrubby ground covering1626Shepherdia canadensis, Juniperus communis, Hedysarum sulphurescens, Populus tremuloides, Rosa sp., Castilleja hispida, Arctostaphylos uva-ursi, Packera cana, Allium cernuum, Solidago multiradiata, Dasiphora fruticosa>2

  • vexilliflexus
    2019
    Co-Authors: 281 K. Mcfadyen, J. F. Bain, B. Barungan, J. Golden
    Abstract:

    Astragalus vexilliflexus E. Sheldastragale à étendard courbébent-flowered milk-vetchWhitney Creek RidgeT. ChisholmRocky ridge1930 to 1887Pinus flexilis, Arctostaphylos uva-ursi, Juniperus horizontalis>3

  • michauxiana
    2019
    Co-Authors: 306a K. Mcfadyen, J. F. Bain, B. Barungan, J. Golden
    Abstract:

    Artemisia michauxiana Besserarmoise de MichauxMichaux's wormwoodWhitney Creek RidgeT. ChisholmS.E. facing scree slope; sparse vegetation1821Penstemon nitidus, Dasiphora fruticosa, Arctostaphylos uva-ursi, Oxytropis sp., Erigeron compositu

  • scopulorum
    2019
    Co-Authors: 474 K. Mcfadyen, T. Chisholm, J. F. Bain
    Abstract:

    Juniperus scopulorum Sarg.genévrier des RocheusesRocky Mountain juniperMount Ptolemy TrailT. ChisholmTrailside in old mixed conifer forest; partially shaded1520Shepherdia canadensis, Chamaenerion angustifolium, Arctostaphylos uva-ursi, Rubus parviflorus, Thalictrum venulosum, Astragalus robbinsii2.5 m tall by 1 m wid

Randy Molina - One of the best experts on this subject based on the ideXlab platform.

  • biology of the ectomycorrhizal genus rhizopogon iii influence of co cultured conifer species on mycorrhizal specificity with the arbutoid hosts Arctostaphylos uva ursi and arbutus menziesii
    New Phytologist, 1997
    Co-Authors: Randy Molina, Donaraye Mckay, Jane E. Smith, L H Melville
    Abstract:

    Seedlings of Pseudotsuga menziesii (Mirb.) Franco, Pinus ponderosa Dougl. ex Laws, Arbutus menziesii Pursh., and cuttings of Arctostaphylos uva-ursi (L.) Spreng were grown in monoculture and in conifer-hardwood dual-culture combinations in the glasshouse and inoculated with spore slurries of six Rhizopogon species. The primary objectives were to assess and compare the pattern of host specificity between symbionts and to study the influence of co-cultured plants on ectomycorrhiza development. The Rhizopogon spp. ranged from genus-specific to multiple-host compatible. In monoculture, four Rhizopogon sp. (R. ellenae Smith, R. occidentalis Zeller & Dodge, R. smithii Hosford and R. subcaerulescens Smith) formed ectomycorrhizas with Pinus ponderosa, and two Rhizopogon sp. (R. parksii Smith and R. vinicolor Smith) formed ectomycorrhizas with Pseudotsuga menziesii. None of the fungi tested developed ectomycorrhizas on Arbutus menziesii or Arctostaphylos uva-ursi in monoculture. In dual culture, three of the four Rhizopogon species (R. ellenae, R. occidentalis and R. subcaerulescens) that formed ectomycorrhizas on Pinus ponderosa, formed some ectomycorrhizas on Arbutus menziesii and Arctostaphylos uva-ursi. Rhizopogon parksii and R. vinicolor only formed ectomycorrhizas on Pseudotsuga menziesii.

Donaraye Mckay - One of the best experts on this subject based on the ideXlab platform.

  • biology of the ectomycorrhizal genus rhizopogon iii influence of co cultured conifer species on mycorrhizal specificity with the arbutoid hosts Arctostaphylos uva ursi and arbutus menziesii
    New Phytologist, 1997
    Co-Authors: Randy Molina, Donaraye Mckay, Jane E. Smith, L H Melville
    Abstract:

    Seedlings of Pseudotsuga menziesii (Mirb.) Franco, Pinus ponderosa Dougl. ex Laws, Arbutus menziesii Pursh., and cuttings of Arctostaphylos uva-ursi (L.) Spreng were grown in monoculture and in conifer-hardwood dual-culture combinations in the glasshouse and inoculated with spore slurries of six Rhizopogon species. The primary objectives were to assess and compare the pattern of host specificity between symbionts and to study the influence of co-cultured plants on ectomycorrhiza development. The Rhizopogon spp. ranged from genus-specific to multiple-host compatible. In monoculture, four Rhizopogon sp. (R. ellenae Smith, R. occidentalis Zeller & Dodge, R. smithii Hosford and R. subcaerulescens Smith) formed ectomycorrhizas with Pinus ponderosa, and two Rhizopogon sp. (R. parksii Smith and R. vinicolor Smith) formed ectomycorrhizas with Pseudotsuga menziesii. None of the fungi tested developed ectomycorrhizas on Arbutus menziesii or Arctostaphylos uva-ursi in monoculture. In dual culture, three of the four Rhizopogon species (R. ellenae, R. occidentalis and R. subcaerulescens) that formed ectomycorrhizas on Pinus ponderosa, formed some ectomycorrhizas on Arbutus menziesii and Arctostaphylos uva-ursi. Rhizopogon parksii and R. vinicolor only formed ectomycorrhizas on Pseudotsuga menziesii.