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EN
Five taxa: Trachelomoas volvocina, T. volvocina var. subglobosa, T. hispida var. hispida, T. obovata, and T. intermedia fo. papillata. were found in puddles in Warszawa and Ko?obrzeg. From among them T. intermedia fo. papillata was for the first time recorded in Poland; while T. obovata and T. volvocina var. subglobosa are rarely recorded in Poland. All of them are briefly described; and accompanied by SEM photographs.
EN
This work presents electrophoretic seed globulin data obtained fro 173 accessions representing nine Vicia species of the section Faba, whivh were already investigated for electrophoretic seed albumin patterns.Electrophoretic analysis of seed globulins was performed using sodium dodecyl suphate-polyacrylamide gel electrophoresis (SDS-PAGE).In the examined material totally 38 well-defined polypeptide bands, in the relative molecular mass range of 19-61 kD, were distinguished.The presence/absence of particular bands was recorded for each analysed individual.The electrophoretic data were used for hierarchical grouping of the examined taxa, based on calculated Bhattacharya distances.V bithynica proved to be the most distinctive member of Vicia section Faba.In turn, V.faba was clearly different from species of the V.narbonensis varieties and another - of the remaining species.In the latter group, V.serratifolia appeared to be rather distantly related to V.eristaliodes, V.galilaea, V.hyaeniscyamus, V.johannis and V.kalakhensis.The obtained results are compared with the corresponding seed albumin data and discussed with reference to taxonomic relatioships in Vicia section Faba.
Folia Biologica
|
2002
|
vol. 50
|
issue 3-4
199-202
EN
The first pair of legs in males of some groups of diplopods is modified, having a large coxa and oral projecting prefemoral process; in the family Spirostreptidae (Spirostreptida) this structure has relevance on the genus level. This paper discusses the shape, presence, and absence of the prefemoral process in the genus Pseudonannolene (Pseudonannolenidae, Spirostreptida) and suggests that this structure is an important taxonomic character in this genus and can be used for distinguishing some species.
EN
Symbiotic associations are of wide significance in evolution and biodiversity. The green hydra is a typical example of endosymbiosis. In its gastrodermal myoepithelial cells it harbors the individuals of a unicellular green algae. Endosymbiotic algae from green hydra have been successfully isolated and permanently maintained in a stable clean lab culture for the first time.We reconstructed the phylogeny of isolated endosymbiotic algae using the 18S rRNA gene to clarify its current status and to validate the traditional inclusion of these endosymbiotic algae within the Chlorella genus. Molecular analyses established that different genera and species of unicellular green algae could be present as symbionts in green hydra, depending on the natural habitat of a particular strain of green hydra.
EN
The genus Arthrospira includes filamentous cyanobacteria with multicellular cylindrical trichomes arranged in an open helix. The biomass of Arthrospira is composed of protein (50-70%), carbohydrates, lipids and minerals. It also contains carotenoids, phycocyanin and vitamins. Arthrospira species are found in tropical and semitropical regions. Arthrospira is industrially cultivated because of its high nutritional values as well as of its therapeutic properties. Commercial production of Arthrospira is carried out in open ponds and closed bioreactors. The biomass is sold by the incorrect name ?Spirulina' as a result of confusion in nomenclature regarding the genus Arthrospira.
EN
Electrophoretic analysis of seed albumins covered 201 accessions representing six subspecies of Vicia sativa L.: nigra, amphicarpa, incisa, sativa, macrocarpa and cordata. At least five individuals of each accession were examined separately. All the taxa under study showed variation with respect to albumin banding patterns, which was due to differences between accessions and individual variation within accessions. The number of albumin bands distinguished in particular taxa varied from 13 to 19. The statistical analysis of the electrophoretic data consisted in hierarchical grouping by the UPGMA method based on EUCLIDEAN distances. In the case of subsp. nigra and subsp. sativa, accessions originating from North Africa tended to form a group showing some distinctness from the remaining accessions. As to relationships among the studied taxa, subsp. nigra and subsp. cordata were shown to be the most closely related and their affinities to other members of the V. sativa aggregate were decreasing in the following order: subsp. macrocarpa, subsp. sativa, subsp. amphicarpa, subsp. incisa. The obtained results are discussed with reference to taxonomic relationships among the members of the V. sativa aggregate.
EN
The studied material covered 58 accessions representing Vicia faba of section Faba, V. bithynica of section Bithynicae and seven species of section Narbonensis. Proteins of individual seeds were separated by polyacrylamide gel electrophoresis and the gels were stained for inhibitory activity against trypsin. The number of trypsin inhibitor (TI) bands recorded in particular species varied from three in V. eristalioides and V. galilaea to 15 in V. narbonensis; in total, 30 bands were distinguished in the examined material. Except for V. eristalioides, the studied species showed intraspecific variation with respect to electrophoretic TI patterns. A statistical analysis of the data, using hierarchical UPGMA grouping, resolved the studied taxa into three main clusters. V. faba subspecies/varieties formed one cluster. The second cluster consisted of V. narbonensis varieties and the rather distantly related V. eristalioides. The third cluster comprised V. bithynica as a peripheral species and the more closely associated V. galilaea, V. hyaeniscyamus, V. johannis, V. kalakhensis and V. serratifolia. The obtained results are discussed with reference to taxonomic relationships of the species under study.
EN
The genus Isophya represents one of the largest orthopteran genera with about 45 species occurring in Europe. All over its range the genus includes groups of sibling species, the recognition of which is hampered by their morphological similarity. In part, some species were grouped according to their morphology: the Isophya straubei-group, the I. amplipennis-group and the I. major-group. Nevertheless,many species have not been studied using newmethods. This is particularly true for 15 taxa described from the Balkans, more or less resembling I. modesta, known mostly from old, unsatisfactorily informative descriptions. Chromosomal analysis of 25 species/subspecies of the genus Isophya showed the karyotypic evolution among species. The karyotype of 18 species/subspecies was investigated for the first time. The most remarkable changes in the sex chromosomes were the ancient acrocentric X chromosome inversions in 19 species and an X chromosome/autosome mutual tandem translocation, from which the sex determination system neo-XY originated in I. hemiptera. Karyotype differentiation has been less rapid in autosomes than in sex chromosomes, in this case interspecific autosomal differentiation has involved the distribution and quantity of C-heterochromatin as well as the number of NORs. Cytogenetic analysis revealed some changes reflecting the level of genomic organization,andtheresultssuggestsomeassociationofrelatedtaxafrombiogeographicregions.
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