scholarly journals Contributions to the smut fungi of Africa. 7. First records of Tilletia brachypodii-ramosi and Ustilago constantineanui

MYCOBIOTA ◽  
2021 ◽  
Vol 11 ◽  
pp. 11-16
Author(s):  
Teodor T. Denchev ◽  
◽  
Cvetomir M. Denchev ◽  
Keyword(s):  
Smut Fungi ◽  
First Time

Two poorly known smut fungi are recorded for the first time from Africa: Tilletia brachypodii-ramosi on Brachypodium retusum (from Morocco) and Ustilago constantineanui on Sporobolus schoenoides (from Algeria). Descriptions and illustrations are provided for these taxa.

scholarly journals Microbotryum bardanense and M. polygoni-alati —new records from Nepal

Mycotaxon ◽  
2021 ◽  
Vol 136 (2) ◽  
pp. 491-496
Author(s):  
Teodor T. Denchev ◽  
Suk-Pyo Hong ◽  
Cvetomir M. Denchev
Keyword(s):  
New Records ◽  
Smut Fungi ◽  
First Time

Two smut fungi, Microbotryum bardanense and M. polygoni-alati, are reported for the first time from Nepal. Descriptions, illustrations, and taxonomic notes are provided for these taxa.

Emended description and geographical distribution of Sporisorium elegantis (Ustilaginaceae), a species shared between West Africa and India

Phytotaxa ◽  
2014 ◽  
Vol 175 (3) ◽  
pp. 148 ◽  
Author(s):  
Marcin Piątek ◽  
Jolanta Piątek ◽  
Nourou S. Yorou
Keyword(s):  
West Africa ◽  
Distribution Pattern ◽  
Geographical Distribution ◽  
Rare Species ◽  
Smut Fungus ◽  
Smut Fungi ◽  
Western Africa ◽  
Emended Description ◽  
First Time

Sporisorium elegantis, a smut fungus on Thelepogon elegans, is reported for the first time from Benin (West Africa). Based on this collection, an emended description and illustration of this rare species are provided. The geographical distribution of Sporisorium elegantis is documented for Benin, Nigeria and India. The disjunctive occurrence of this species between (western) Africa and India is interesting, though not exceptional in smut fungi. The mechanisms responsible for such a distribution pattern are not known.

scholarly journals New records of smut fungi from Venezuela: Anthracoidea uleana, Sporisorium panici-petrosi and Ustilago schroeteriana

2013 ◽  
Vol 43 (2) ◽  
pp. 153-159 ◽  
Author(s):  
Marcin Piątek
Keyword(s):  
New Records ◽  
Smut Fungi ◽  
Type Collection ◽  
First Time ◽  
Second World

Three smut fungi from Venezuela are described, illustrated and discussed based on newly studied collections. <em>Ustilago schroeteriana</em> Henn. is reported for the first time from the country. <em>Anthracoidea uleana</em> (Syd. & P. Syd.) Vánky is confirmed in Venezuela on Carex longii Mack., which is an accessory host for this smut. <em>Sporisorium panici-petrosi</em> (Syd. & P. Syd.) M. Piepenbr. is reported on <em>Thrasya</em> sp. from a second world locality in northern Venezuela, its description is slightly expanded and issues concerning typification of this name and the nomenclature of the host in the type collection are clarified and corrected.

scholarly journals New records of Microbotryum (Microbotryaceae) from the Balkan Peninsula

2021 ◽  
Vol 45 (2) ◽  
pp. 285-291
Author(s):  
Teodor Denchev ◽  
Boris Assyov ◽  
Cvetomir Denchev
Keyword(s):  
Bosnia And Herzegovina ◽  
New Records ◽  
Balkan Peninsula ◽  
Smut Fungus ◽  
Smut Fungi ◽  
Italian Alps ◽  
New Host ◽  
Balkan Countries ◽  
First Time ◽  
Distribution In Europe

Seven smut fungi belonging to the genus Microbotryum are reported for the first time from the following Balkan countries: M. heliospermatis, M. piperi, M. scabiosae, M. silenes-dioicae, and M. silenes-saxifragae from Bulgaria, M. reticulatum, M. silenes-saxifragae, and M. stygium from Greece, and M. silenes-saxifragae from Bosnia and Herzegovina and Croatia. The finding of M. piperi represents the first Balkan record of this smut fungus which, elsewhere in Europe, is only known from the French Pyrenees and the Italian Alps. The finding of M. stygium in Crete considerably extends its distribution in Europe. Rumex tuberosus subsp. creticus is reported as a new host for M. stygium.

scholarly journals Additions to the smut fungi of the Iberian Peninsula

2021 ◽  
Vol 78 (1) ◽  
pp. e109
Author(s):  
Teodor T. Denchev ◽  
María P. Martín ◽  
Martin Kemler ◽  
Cvetomir M. Denchev
Keyword(s):  
Iberian Peninsula ◽  
Dna Sequences ◽  
New Record ◽  
Royal Botanic Garden ◽  
Smut Fungi ◽  
Species Relationships ◽  
Botanic Garden ◽  
New Host ◽  
First Time ◽  
New Distribution

After examination of specimens, mainly from the herbarium (MA) and the mycological collection (MA-Fungi) of the Royal Botanic Garden of Madrid, we report several novelties on smut fungi within Europe. Two species of smut fungi, Sporisorium egyptiacum and Tilletia viennotii, are reported for the first time from Europe. A finding of Sphacelotheca polygoni-serrulati represents a second record for Europe. Six species of smut fungi, Moreaua kochiana, Schizonella elynae, Sporisorium egyptiacum, Thecaphora thlaspeos, Tilletia viennotii, and Ustanciosporium majus, are recorded for the first time from the Iberian Peninsula. Five species of smut fungi, Moreaua kochiana, Schizonella elynae, Sporisorium egyptiacum, Thecaphora thlaspeos, and Ustanciosporium majus, are newly recorded from Spain. Three species, Moreaua kochiana, Sphacelotheca polygoni-serrulati, and Tilletia viennotii, are new for Portugal. A specimen of Moreaua kochiana represents a new record for France. Arabis serpillifolia is reported as a new host of Thecaphora thlaspeos. New distribution records from the Iberian Peninsula are given for Anthracoidea arenariae, Microbotryum minuartiae, M. silenes-saxifragae, and Tranzscheliella sparti. We also include a phylogenetic analysis of DNA sequences of Moreaua kochiana, generated in this study, to understand this species’ relationships within its genus.

scholarly journals New data about smut fungi of Nurata Range

2015 ◽  
Author(s):  
Ilyor Mustafaev
Keyword(s):  
Vascular Plants ◽  
Host Plants ◽  
Seasonal Distribution ◽  
Smut Fungi ◽  
Autumn Period ◽  
First Time

The article presents data about 14 species of smut fungi that occur in the Nurata ridge. During analyzes confinement them to host plants revealed that they parasitize on 16 species of vascular plants belonging to 5 families. On family Poaceae was observed 10 species of smut fungi that constitute 71.4 % of the total of smuts of Nurata. 14 species of smut fungi observed in seasonal distribution were studied. Among them 2 species (Vankya heufleri, Antracoidea eleocharidis) found in the spring, only 1 species (Ustilago cyno-dontis) in spring-autumn period. Also smut fungi first time found on host plants of Carex stenophylla, Tulipa turkestanica, Thalictrum sultanabadense, Stipa capillata and Stipa lipskyi in Uzbekistan. Refs 7. Figs 5. Tables 3.

Aspects of teliospore germination in North American smut fungi. II.

1972 ◽  
Vol 50 (12) ◽  
pp. 2569-2574 ◽  
Author(s):  
Ruben Duran
Keyword(s):  
North America ◽  
Exotic Species ◽  
North American ◽  
New World ◽  
New Records ◽  
Smut Fungi ◽  
Additional Species ◽  
Teliospore Germination ◽  
First Time

Teliospore germination is described for 28 additional species of smut fungi, most of which were recently collected in Mexico.Germination for most species is reported here for the first time. Included are some rarely collected species, some recently described by the author, and some previously unknown to exist in the New World. Where new records of exotic species for North America are indicated, germination was used to verify diagnoses, even though reported by previous workers in some instances. In demonstrating germination, family and generic affinities for most species were corroborated, although one required generic transfer.

Annulate lamellae in the Sertoli cells of guinea pig testis after unilateral torsion of the spermatic cord

1984 ◽  
Vol 42 ◽  
pp. 196-197
Author(s):  
J. Chakraborty ◽  
A. P. Sinha Hikim ◽  
J. S. Jhunjhunwala
Keyword(s):  
Sertoli Cells ◽  
Guinea Pigs ◽  
Spermatic Cord ◽  
Present Report ◽  
Cell Types ◽  
Annulate Lamellae ◽  
Spermatogenic Cells ◽  
Electron Microscopic ◽  
Structural Details ◽  
First Time

Although the presence of annulate lamellae was noted in many cell types, including the rat spermatogenic cells, this structure was never reported in the Sertoli cells of any rodent species. The present report is based on a part of our project on the effect of torsion of the spermatic cord to the contralateral testis. This paper describes for the first time, the fine structural details of the annulate lamellae in the Sertoli cells of damaged testis from guinea pigs.One side of the spermatic cord of each of six Hartly strain adult guinea pigs was surgically twisted (540°) under pentobarbital anesthesia (1). Four months after induction of torsion, animals were sacrificed, testes were excised and processed for the light and electron microscopic investigations. In the damaged testis, the majority of seminiferous tubule contained a layer of Sertoli cells with occasional spermatogonia (Fig. 1). Nuclei of these Sertoli cells were highly pleomorphic and contained small chromatinic clumps adjacent to the inner aspect of the nuclear envelope (Fig. 2).

Electron spectroscopic imaging and diffraction

1991 ◽  
Vol 49 ◽  
pp. 706-707
Author(s):  
M. Rühle ◽  
J. Mayer ◽  
J.C.H. Spence ◽  
J. Bihr ◽  
W. Probst ◽  
...  
Keyword(s):  
Materials Science ◽  
Electron Spectroscopic Imaging ◽  
Magnetic Filter ◽  
Magnetic Imaging ◽  
Illumination System ◽  
Probe Size ◽  
Diffraction Patterns ◽  
Fritz Haber ◽  
Koehler Illumination ◽  
First Time

A new Zeiss TEM with an imaging Omega filter is a fully digitized, side-entry, 120 kV TEM/STEM instrument for materials science. The machine possesses an Omega magnetic imaging energy filter (see Fig. 1) placed between the third and fourth projector lens. Lanio designed the filter and a prototype was built at the Fritz-Haber-Institut in Berlin, Germany. The imaging magnetic filter allows energy-filtered images or diffraction patterns to be recorded without scanning using efficient area detection. The energy dispersion at the exit slit (Fig. 1) results in ∼ 1.5 μm/eV which allows imaging with energy windows of ≤ 10 eV. The smallest probe size of the microscope is 1.6 nm and the Koehler illumination system is used for the first time in a TEM. Serial recording of EELS spectra with a resolution < 1 eV is possible. The digital control allows X,Y,Z coordinates and tilt settings to be stored and later recalled.

A Novel TEM Technique for Characterizing As-Grown CVD Diamond Films

1991 ◽  
Vol 49 ◽  
pp. 956-957 ◽  
Author(s):  
Z.L. Wang ◽  
J. Bentley ◽  
R.E. Clausing ◽  
L. Heatherly ◽  
L.L. Horton
Keyword(s):  
Diamond Films ◽  
Chemical Vapor ◽  
Growth Direction ◽  
Dark Field ◽  
Growth Surface ◽  
Specimen Preparation ◽  
Transmission Electron ◽  
Diffraction Patterns ◽  
First Time ◽  
Microstructural Studies

Microstructural studies by transmission electron microscopy (TEM) of diamond films grown by chemical vapor deposition (CVD) usually involve tedious specimen preparation. This process has been avoided with a technique that is described in this paper. For the first time, thick as-grown diamond films have been examined directly in a conventional TEM without thinning. With this technique, the important microstructures near the growth surface have been characterized. An as-grown diamond film was fractured on a plane containing the growth direction. It took about 5 min to prepare a sample. For TEM examination, the film was tilted about 30-45° (see Fig. 1). Microstructures of the diamond grains on the top edge of the growth face can be characterized directly by transmitted electron bright-field (BF) and dark-field (DF) images and diffraction patterns.

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