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Trichomanes speciosum Willd. (Hymenophyllaceae, Pteridophyta) dans le Massif armoricain / Sandrine Loriot in E.R.I.C.A., n°19 (Année 2005)
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Titre : Trichomanes speciosum Willd. (Hymenophyllaceae, Pteridophyta) dans le Massif armoricain Type de document : Livre Auteurs : Sandrine Loriot, Auteur ; Julien Geslin, Auteur Année de publication : 2005 Article en page(s) : pp. 3-22 Langues : Français Catégories : [ZG] BASSE-NORMANDIE (25)
[ZG] BRETAGNE (53)
[ZG] PAYS-DE-LA-LOIRE (52)
[Espèces (in biblio)] Trichomanes speciosum Willd.Mots-clés : ptéridophyte sporophyte gamétophyte distribution abondance écologie conservation Résumé : "Afin d'établir un plan de conservation pour la fougère rare et menacée Trichomanes speciosum Willd. dans le Massif armoricain, le Conservatoire botanique national de Brest a mené un travail de terrain pour mettre à jour et améliorer les connaissances sur la répartition, l'abondance et l'écologie, à la fois du sporophyte et du gamétophyte de cette espèce." (source : auteur) Type de publication : périodique Référence biblio : Loriot S., Geslin J., 2005 - Trichomanes speciosum Willd. (Hymenophyllaceae, Pteridophyta) dans le Massif armoricain. E.R.I.C.A., 19 : 3-22. ID PMB : 21797 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=21797
in E.R.I.C.A. > n°19 (Année 2005) . - pp. 3-22[article]Exemplaires
Cote Localisation Disponibilité P0203-1 Brest Exclu du prêt P0203-1 Caen Exclu du prêt P0203-1 Nantes Exclu du prêt Documents numériques
Accès Libre
DocumentAdobe Acrobat PDFMycorrhiza-like interaction between the achlorophyllous gametophyte of Lycopodium clavatum L. and its fungal endophyte studied by light and electron microscopy / E. Schmid in New phytologist, vol. 124, n°1 (Année 1993)
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Titre : Mycorrhiza-like interaction between the achlorophyllous gametophyte of Lycopodium clavatum L. and its fungal endophyte studied by light and electron microscopy Type de document : Livre Auteurs : E. Schmid, Auteur ; F. Oberwinkler, Auteur Année de publication : 1993 Article en page(s) : pp. 69-81 Langues : Anglais Catégories : [Espèces (in biblio)] Lycopodium clavatum L. Mots-clés : gamétophyte mycorhize ultrastructure spindle-pole body Résumé : "The mycorrhiza-like association of mature gametophytes of Lycopodium clavatum and an endophytic fungus was studied by means of light and electron microscopy. Fine aseptate hyphae of the fungus formed very regular dense hyphal coils and numerous small vesicles of different stages in the cortical cells. Extended infections occurred within preformed spaces between the cells of the storage tissue. These spaces probably arose by degeneration of the host cells. Several hyphae grew within them and were partly swollen or irregularly lobed and branched. They were embedded in a heterogeneous material, probably of host origin. Arbuscles were not established during the interaction. All fungal structures degenerated in the older host tissues that remained intact. The fungus contained bacterium-like organelles. Elliptic interphase spindle-pole bodies of the fungus were attached to the outer nuclear envelope. The host-fungus interaction in the gametophyte of L. clavatum cannot be related to any type of mycorrhizal association described to date. It is therefore called the ‘Lycopodioid mycothallus interaction’." (source : auteurs) Type de publication : périodique Référence biblio : Schmid E., Oberwinkler F., 1993 - Mycorrhiza-like interaction between the achlorophyllous gametophyte of Lycopodium clavatum L. and its fungal endophyte studied by light and electron microscopy. New phytologist, 124 (1) : 69-81. ID PMB : 58051 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=58051
in New phytologist > vol. 124, n°1 (Année 1993) . - pp. 69-81[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire Phylogenetic Relationships among Sphagnum Sections : Hemitheca, Isocladus, and Subsecunda / Jonathan Shaw in The Bryologist, vol. 107, n°2 (Eté 2004)
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Titre : Phylogenetic Relationships among Sphagnum Sections : Hemitheca, Isocladus, and Subsecunda Type de document : Livre Auteurs : Jonathan Shaw, Auteur ; C. Cox, Auteur ; Sandra Boles, Auteur Année de publication : 2004 Article en page(s) : pp. 189-196 Langues : Anglais Mots-clés : Plant cells Taxa Phylogenetics Phylogeny population génétique Hyalin Branches Genetic loci Solar fibrils gamétophyte Résumé : "Sphagnum macrophyllum, S. pylaesii, and S. cyclophyllum are morphologically atypical in the genus Sphagnum and their systematic placement has been a source of controversy. The first is generally classified in the mono-specific section Isocladus, and the second as section Hemitheca. Sphagnum cyclophyllum is classified in the section Subsecunda, but several authors have hypothesized a close relationship between all three species. Nucleotide sequences from eight nuclear and chloroplast loci were obtained to test hypotheses about relationships among these taxa. Phylogenetic analyses resolve these species (along with S. microcarpum, closely related to S. cyclophyllum) in a well-supported monophyletic group within the section Subsecunda. Sphagnum macrophyllum is sister to S. cyclophyllum, S. microcarpum, and S. pylaesii. Sphagnum cyclophyllum and S. microcarpum form a clade that is sister to S. pylaesii. Two mutually monophyletic groups of populations are resolved within S. pylaesii, one including the European populations and the other including populations from eastern North America and South America. The European populations are almost identical at the nucleotide sequence level whereas the American populations are genetically diverse. Short, delicate pseudopodia; exceptionally large opercula; and an absence or near absence of pseudostomata appear to be synapomorphies for the clade containing S. macrophyllum, S. microcarpum, S. cyclophyllum, and S. pylaesii." Type de publication : périodique Référence biblio : Shaw J., Cox C., Boles S., 2004 - Phylogenetic Relationships among Sphagnum Sections : Hemitheca, Isocladus, and Subsecunda. The Bryologist, 107 (2) : 189-196. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66079
in The Bryologist > vol. 107, n°2 (Eté 2004) . - pp. 189-196[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire