1,721,010 research outputs found
Anthracoidea transberingiana, a new smut species on Carex pauciflora from Beringia
No full textPiątek, Marcin (2014): Anthracoidea transberingiana, a new smut species on Carex pauciflora from Beringia. Phytotaxa 174 (2): 105-110, DOI: 10.11646/phytotaxa.174.2.5, URL: http://dx.doi.org/10.11646/phytotaxa.174.2.
Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest
No full textPiątek, Jolanta, Piątek, Marcin (2014): Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest. Phytotaxa 174 (5): 261-271, DOI: 10.11646/phytotaxa.174.5.2, URL: http://dx.doi.org/10.11646/phytotaxa.174.5.
FIGURE 1 in Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest
No full textFIGURE 1. Location of the sampling site in Cameroon and the general view of a lake enclosed by the Guineo-Congolian rainforest (phot. M. Piątek).Published as part of Piątek, Jolanta & Piątek, Marcin, 2014, Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest, pp. 261-271 in Phytotaxa 174 (5) on page 262, DOI: 10.11646/phytotaxa.174.5.2, http://zenodo.org/record/515171
FIGURES 14–19 in Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest
No full textFIGURES 14–19. Stomatocyst #49, Piątek J. observed in SEM: mature stomatocyst. Note the well developed the first collar and the second collar indicated by white and grey arrows respectively.Published as part of Piątek, Jolanta & Piątek, Marcin, 2014, Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest, pp. 261-271 in Phytotaxa 174 (5) on page 266, DOI: 10.11646/phytotaxa.174.5.2, http://zenodo.org/record/515171
FIGURE 1 in Anthracoidea transberingiana, a new smut species on Carex pauciflora from Beringia
No full textFIGURE 1. Anthracoidea transberingiana on Carex pauciflora (holotype BPI 171459). A. Sorus in the ovary. B–F. Spores seen by LM, median and superficial views, note internal swellings indicated by arrows. G–I. Spores seen by SEM. J. Spore wall seen by SEM. Bars: A = 1 mm, B–F, H = 10 µm, G = 20 µm, I = 5 µm, J = 2 µm.Published as part of Piątek, Marcin, 2014, Anthracoidea transberingiana, a new smut species on Carex pauciflora from Beringia, pp. 105-110 in Phytotaxa 174 (2) on page 107, DOI: 10.11646/phytotaxa.174.2.5, http://zenodo.org/record/515058
Thecaphora melandrii: The IUCN Red List of Threatened Species 2020: e.T176460743A176931846
No full textFIGURE 2 in Emended description and geographical distribution of Sporisorium elegantis (Ustilaginaceae), a species shared between West Africa and India
No full textFIGURE 2. Sporisorium elegantis on Thelepogon elegans seen by light microscopy (KRAM F-56853). A–C. Peridial cells. D. Disintegrating spore ball. E–F. Spores, median and superficial views. G–H. Sterile cells. Bars = 10 µm.Published as part of Piątek, Marcin, Piątek, Jolanta & Yorou, Nourou S., 2014, Emended description and geographical distribution of Sporisorium elegantis (Ustilaginaceae), a species shared between West Africa and India, pp. 148-154 in Phytotaxa 175 (3) on page 151, DOI: 10.11646/phytotaxa.175.3.4, http://zenodo.org/record/514386
The distribution and host range of <i>Thecaphora melandrii</i>, with first records for Britain
No full textThecaphora melandrii (Syd.) Vánky & M.Lutz infects species in the Caryophyllacaeae forming sori with spore balls in the floral organs. We report new finds from Britain, supported by phylogenetic analysis, that confirm its occurrence on Silene uniflora Roth. We review published and web accessible records and note the relatively few records of this smut, its sparse distribution, confined to Europe but scattered predominantly from central to eastern Europe. Analysis of the rDNA ITS and 28S sequences demonstrates little variability among specimens, even those parasitising different host genera, which suggests that the species has evolved relatively recently. Some Microbotryum species infect the same host plants, and we found two species, M. lagerheimii Denchev and M. silenes-inflatae (DC. ex Liro) G.Deml & Oberw., in the same locations as T. melandrii, identified by morphology and molecular phylogenetic analysis. These species may form a stable multi-species community of parasites of Silene uniflora.</p
FIGURE 3 in Emended description and geographical distribution of Sporisorium elegantis (Ustilaginaceae), a species shared between West Africa and India
No full textFIGURE 3. Sporisorium elegantis on Thelepogon elegans seen by scanning electron microscopy (KRAM F-56853). A. Spore balls. B–C. Spores. D. Spore ornamentation. E. Spores and chains of sterile cells. F. Group of sterile cells. Bars: A = 50 µm, E = 30 µm, B, F = 10 µm, C = 5 µm, D = 3 µm.Published as part of Piątek, Marcin, Piątek, Jolanta & Yorou, Nourou S., 2014, Emended description and geographical distribution of Sporisorium elegantis (Ustilaginaceae), a species shared between West Africa and India, pp. 148-154 in Phytotaxa 175 (3) on page 152, DOI: 10.11646/phytotaxa.175.3.4, http://zenodo.org/record/514386
Anther smuts of Silene acaulis and S. uniflora in the Outer Hebrides, including an assessment of ITS genotypes of Microbotryum silenes-acaulis
No full textAnther smuts on Silene acaulis and S. uniflora from the Outer Hebrides, Scotland, UK), are analysed using morphological and molecular techniques, and found to represent Microbotryum silenes-acaulis and M. silenes-inflatae, respectively. This is the first identification of caryophyllaceous anther smuts in the Outer Hebrides according to modern species concepts and the first report of Microbotryum silenes-acaulis confirmed by molecular analysis from the British Isles. Additionally, the genetic structure of Microbotryum silenes-acaulis, based on all currently available ITS sequences, is analysed and discussed. Seven ITS genotypes are determined for Microbotryum silenes-acaulis, including three genotypes in North America and four genotypes in Europe. Compared to European accessions, all North American accessions share specific nucleotides and are genetically divergent
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