scholarly journals Contribution to the systematic knowledge of endemic Aubrieta pinardii Boiss. (Brassicaceae) from Turkey

2020 ◽  
Vol 27 (1) ◽  
pp. 27-35
Author(s):  
Emrah Şirin ◽  
Mehmet Cengiz Karaismailoğlu
Keyword(s):  
Electron Microscope ◽  
Chromosome Number ◽  
Scanning Electron Microscope ◽  
Geographical Distribution ◽  
Anatomical Structures ◽  
Seed Surface ◽  
Cytological Data ◽  
Surface Ornamentation ◽  
Systematic Knowledge ◽  
Scanning Electron

The aim of this study was to document the taxonomical, morphological, anatomical, palynological and cytological characters, and geographical distribution of endemic Aubrieta pinardii Boiss. (Brassicaceae) from Turkey. The description of the taxon was revised as a consequence of comprehensive assessments of many specimens. The surface pictures belonging to seed and pollen of the taxon were obtained by Scanning Electron Microscope. The seed surface ornamentation was rugose. The pollen was radially and isopolar and prolate in forms, with polar axes of 19.52 ± 0.29 μm and equatorial axes of 13.04 ± 0.22 μm, with oval outlines in the equatorial axes, and elliptical in the polar axes. They were three–colpate and colpus sizes varied between 12.98 μm and 13.29 μm in length, and between 1.33 and 2.09 μm in width. Also, the anatomical structures of the root, stem and leaf of species were studied. In cytological studies, the chromosome number of species was found as 2n = 16 (x =8). This was the first work including taxonomical, morphological (macro and micro), anatomical and cytological data of endemic Aubrieta pinardii. Bangladesh J.Plant Taxon. 27(1): 27-35, 2020 (June)

Pattern of the Seed Surface of Goodenia and Related Genera

1980 ◽  
Vol 28 (1) ◽  
pp. 123 ◽  
Author(s):  
RC Carolin
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscope ◽  
Evolutionary Trends ◽  
Seed Surface ◽  
Taxonomic Description ◽  
Surface Patterns ◽  
Scanning Electron

The surface patterns of seeds of 88 species of Goodenia and related genera were examined under scanning electron microscope and light microscope. With use of sections as well, the patterns were resolved into six attributes of which each was present in one of at least two states. Certain combinations of states of attributes are used to define terms which are used for purposes of taxonomic description. Six such terms are defined in this way. The results indicate that previous taxonomic arrangements are unsatisfactory. A brief commentary on possible evolutionary trends is provided and the relationships of the various satellite genera to Goodenia are discussed.

Perimicropylar filaments in eggs of Cyprinodontidae (Pisces, Teleostei)

1992 ◽  
Vol 70 (5) ◽  
pp. 1064-1068 ◽  
Author(s):  
Omar Thiom Thiaw ◽  
Xavier Mattei
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Animal Pole ◽  
Surface Ornamentation ◽  
Scanning Electron

We used a scanning electron microscope to observe the eggs of eight species of fishes belonging to the Cyprinodontidae: Aphyosemion geryi, Aphyosemion riggenbachi, Aphyosemion splendopleure, Epiplatys ansorgei, Epiplatys chaperi, Epiplatys fasciolatus, Epiplatys spilargyreus, and Fundulosoma thierryi. The secondary envelope organizes ornamentations on its surface, except for a localized zone at the animal pole that corresponds to the micropylar region. In certain species the micropyle closes on contact with water but can be identified by the absence of surface ornamentation in the area. The eggs of these fishes possess adhesive filaments that seem to be distributed over the whole surface. In the species studied here, the adhesive filaments are almost exclusively perimicropylar. In F. thierryi, the filaments are even present in the vestibule.

Surface ornamentation of the echinoid test and its ecologic significance

Paleobiology ◽  
1976 ◽  
Vol 2 (2) ◽  
pp. 122-130 ◽  
Author(s):  
Susan C. Oldfield
Keyword(s):  
Growth Rate ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Outer Surface ◽  
High Growth ◽  
High Energy ◽  
Low Energy ◽  
Plate Surface ◽  
Surface Ornamentation ◽  
Scanning Electron

A scanning electron microscope survey of the regular echinoid test reveals that the outer surface of its component coronal plates may be sculptured with a fine-relief ornament that is species-characteristic for those species presently surveyed. Structural resemblances in surface ornamentation are more marked in species living in similar habitats than in those species that are apparently phyletically related. Plate ornament is related to skeletal magnesium levels. It is tentatively suggested that low growth rate echinoids that inhabit “low-energy” environments (and exhibit low total skeletal magnesium levels) and “high-energy” habitat-exploiting species with high growth rates (and relatively high skeletal magnesium levels) may have differential patterns of plate growth that can be distinguished by the degree of ornamentation of the plate surface.

Glugea hertwigi. [Descriptions of Fungi and Bacteria].

2019 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Electron Microscope ◽  
North America ◽  
Scanning Electron Microscope ◽  
Freshwater Fish ◽  
Rough Surface ◽  
Geographical Distribution ◽  
Fish Parasite ◽  
Brackish Waters ◽  
The Family ◽  
Scanning Electron

Abstract This article describes the morphology, morphometrics, and geographical distribution of the freshwater fish parasite Glugea hertwigi infecting fish of the family Osmeridae (smelts) in freshwater of north temperate to boreal Europe and North America and nearby seas and brackish waters. Using a scanning electron microscope, spores of this species have a rough surface with loose folds and longitudinal wrinkles. This distinguishes them from spores of G. anomala. This parasite can be found in Canada, USA, Finland, Germany, and Russia.

Circumscription of the genus Medicago (Leguminosae) by seed characters

1990 ◽  
Vol 68 (3) ◽  
pp. 613-629 ◽  
Author(s):  
Ernest Small ◽  
Brenda Brookes ◽  
Per Lassen
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Wide Sense ◽  
Seed Surface ◽  
Light Line ◽  
Seed Characters ◽  
Close Relatives ◽  
Scanning Electron

Delimitation of Medicago from its close relatives in tribe Trifolieae subtribe Trigonellinae remains controversial. Scanning electron microscope studies of the seed surface of Medicago, Trigonella, and Melilotus showed consistent differences between Medicago and the other two genera. Smooth and rough seeds occur in all three genera, the rough seeds proving taxonomically useful. The roughness of Medicago seeds is due to rugose surface bumps (usually wrinkled, always with rounded sides), except in the monotypic section Orbiculares. The roughness of seeds of Trigonella, Melilotus, and Medicago section Orbiculares is due to tuberculate surface bumps. The structure of the Malpighian layer shows completely parallel taxonomic differences. The Malpighian cells are traversed by the light line, and the length of the portion of the cell above the light line (a) and that below the light line (b) distinguishes smooth, rugose, and tuberculate seeds. In smooth seeds (of Medicago, Melilotus, and Trigonella), a and b are constant. In rugose seeds (in Medicago only), a is constant while b is greater under the testa bumps, varying with the height of the portion of the bump occupied. In tuberculate seeds (in Medicago section Orbiculares, and in Trigonella and Melilotus), b is constant while a is greater under the testa bumps. These studies confirm the appropriateness of circumscribing Medicago in a wide sense, except for the inclusion of Medicago section Orbiculares.

SEM and stereoscope microscope observations on the seeds of some Ornithogalum (Hyacinthaceae) species

Biologia ◽  
2008 ◽  
Vol 63 (5) ◽  
Author(s):  
Leszek Bednorz ◽  
Aneta Czarna
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Morphological Characters ◽  
Seed Morphology ◽  
Similar Species ◽  
Specific Level ◽  
Seed Surface ◽  
Taxonomic Criterion ◽  
Micromorphological Characters ◽  
Scanning Electron

AbstractThe paper presents the results of the study on seed morphology of four following Ornithogalum species: O. boucheanum Asch., O. nutans L., O. pyrenaicum L., and O. umbellatum L. Several macro-and micro-morphological characters were observed using stereoscope and scanning electron microscope. Differences were found especially in micromorphological characters of the seed surface, the shape of raphe and micropylar pole. These characters can be used as an additional taxonomic criterion at specific level for this genus. Only the seeds of O. boucheanum and O. nutans — two closely related and morphologically very similar species are practically undistinguished.

HAIR TYPES, POLLEN, AND SEED SURFACES OF SOLANUM MACROCARPON COMPLEX AND SOLANUM LINNAEANUM (SOLANACEAE)

1994 ◽  
Vol 42 (1) ◽  
pp. 41-50
Author(s):  
Z.R. Bukenya ◽  
J.F. Carasco
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Prolate Spheroidal ◽  
Seed Surface ◽  
Pollen Characters ◽  
Surface Patterns ◽  
Scanning Electron

Hair types, pollen, and seed surfaces of Solanum macrocarpon L. complex and Solanum linnaeanum Hepper ex Jaeger were studied using a light and scanning electron microscope. The different hair types occurring in the S. macrocarpon complex and S. linnaeanum can be used to differentiate the various groups in S. macrocarpon complex, and S. macrocarpon from S. linnaeanum. Pollen of S. macrocarpon complex was tricolporate, prolate spheroidal, and the surface ornamented. Pollen characters could not be used to differentiate groups belonging to S. macrocarpon complex. Seed surface patterns were found to be similar in S. macrocarpon complex and S. linnaeanum, and hence of little taxonomic value.

Roeslerina gen. nov. (Caliciales, Caliciaceae), an ally of Roesleria and Coniocybe

1984 ◽  
Vol 62 (12) ◽  
pp. 2514-2519 ◽  
Author(s):  
S. A. Redhead
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Morphological Features ◽  
Surface Ornamentation ◽  
Scanning Electron

Rosleria subterranea (Weinmann) Redhead comb, nov., commonly cited as R. hypogaea Thüm. & Pass, or R. pallida (Pers.) Sacc, is shown to have septate, pigmented ascospores. Roeslerina gen. nov. is proposed for R. radicella sp. nov. and R. microspora sp. nov., species with aseptate pigmentless spores. Scanning electron microscope photographs of all three reveal surface ornamentation that supports the inclusion of the species in the Caliciaceae based on other gross morphological features.

scholarly journals Chromosome and pollen morphology of the rare endemic Centaurae lycopifolia Boiss. & Kotschy

2011 ◽  
Vol 39 (2) ◽  
pp. 223-228 ◽  
Author(s):  
AN Gomurgen ◽  
I Potoglu Erkara ◽  
H Altnozlu
Keyword(s):  
Electron Microscope ◽  
Chromosome Number ◽  
Scanning Electron Microscope ◽  
Pollen Morphology ◽  
Chromosome Length ◽  
Exine Ornamentation ◽  
Karyotype Formula ◽  
Rare Endemic ◽  
Haploid Karyotype ◽  
Scanning Electron

Chromosome and pollen morphology of Centaurea lycopifolia Boiss. & Kotschy were studied. The chromosome number is 2n = 34 with haploid karyotype formula 9m + 9sm. Metaphase chromosome length ranging from 6.16 to 2.23 μm and the total haploid chromosome length was 65, 85 μm. The light and scanning electron microscope investigations revealed spheroidal-subprolate, the amb triangular and tricolporatae pollens in the taxon. Exine ornamentation was tectatae and microechinate-scabrate. Key words: Centaurea lycopifolia; Chromosome; Pollen morphology; Endemic; Turkey DOI: 10.3329/bjb.v39i2.7484 Bangladesh J. Bot. 39(2): 223-228, 2010 (December)

Glugea anomala. [Descriptions of Fungi and Bacteria].

2019 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Freshwater Fish ◽  
Rough Surface ◽  
Geographical Distribution ◽  
Central Portion ◽  
Fish Parasite ◽  
Scanning Electron

Abstract This article describes the morphology, morphometry, and the geographical distribution of the freshwater fish parasite, Glugea anomala. Infections resulted in tumours (also known as xenomas), mainly in the central portion of lateral flank musculature, under the host skin and in the intestines, tumours filled with spores, spores colourless or nearly so. Using a scanning electron microscope, spores of G. anomala species have a highly rugose surface. This distinguishes them from spores of G. plecoglossi which are smooth rugose, and from spores of G. hertwigi which have a rough surface with loose folds and longitudinal wrinkles. This parasite could be found in Canada, USA, Belgium, France, Germany, Poland, Russia, Sweden, and UK.

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