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You searched for: Journal name Biologia Remove constraint Journal name: Biologia Publication year rev 7991-2009 Remove constraint Publication year rev: 7991-2009 Source 2009 v.64 no.5 Remove constraint Source: 2009 v.64 no.5
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1. Ancient oak wood-pasture as a habitat for the endangered tree pipit Anthus trivialis

Author:
Cosmin Moga; Tibor Hartel; Kinga Öllerer
Source:
Biologia 2009 v.64 no.5 pp. 1011-1015
ISSN:
1336-9563
Subject:
Anthus; Quercus; adverse effects; biodiversity; canopy; forests; habitat preferences; habitats; landscapes; shrubs; tree and stand measurements; trees; viability; Romania
Abstract:
... Ancient wood-pastures are facing a major decline in several European countries. These habitats are of great importance for biodiversity because of their special semi-natural character that increases landscape variability and connectivity. In this paper we examine the habitat preferences of the tree pipit Anthus trivialis in an ancient oak wood-pasture, the Breite Natural Reserve, central Romania, ...
DOI:
10.2478/s11756-009-0167-7

2. Annuals sprouting adventitiously from the hypocotyl: their compensatory growth and implications for weed management

Author:
Vít Latzel; Lucie Dospělová; Jitka Klimešová
Source:
Biologia 2009 v.64 no.5 pp. 923-929
ISSN:
1336-9563
Subject:
carbon sequestration; shoots; weed control; perennials; longevity; hypocotyls; harrowing; sprouting; meristems; compensatory growth; organic production; annuals; buds; cutting; fruit growing; biomass; Euphorbia peplus; Anagallis arvensis; Kickxia; habitats
Abstract:
... Habitats, disturbed severely at least once a year, are often dominated by annual plants, which avoid disturbance by means of a short life span and massive production of seeds. Contrary to perennials, they lack pools of reserve meristems on and storage carbon in below-ground organs necessary for vegetative regeneration after disturbance. However, some annuals are able to initiate a bud bank on the ...
DOI:
10.2478/s11756-009-0174-8

3. Antioxidant defense mechanisms of cereal aphids based on ascorbate and ascorbate peroxidase

Author:
Iwona Łukasik; Sylwia Goławska; Agnieszka Wójcicka
Source:
Biologia 2009 v.64 no.5 pp. 994-998
ISSN:
1336-9563
Subject:
Rhopalosiphum padi; Sitobion avenae; antioxidants; ascorbate peroxidase; caffeic acid; defense mechanisms; larvae; morphs; tissues
Abstract:
... Effects of plant o-dihydroxyphenols on ascorbate (ASA) content and ascorbate peroxidase (APOX) activity in the tissues of the grain aphid Sitobion avenae and the bird cherry-oat aphid Rhopalosiphum padi were studied. Among the aphid morphs, the highest ASA content and APOX activity were noted for larvae and the lowest for wingless apterae. When exposed to o-dihydroxyphenols, aphids of both species ...
DOI:
10.2478/s11756-009-0164-x

4. Cloning and expression analysis of hsp70 gene from freshwater planarian Dugesia japonica

Author:
Ke-Xue Ma; Guang-Wen Chen; Hao Lou; Li-Na Fei
Source:
Biologia 2009 v.64 no.5 pp. 1018-1024
ISSN:
1336-9563
Subject:
amputation; freshwater; complementary DNA; open reading frames; stress response; Dugesia; phylogeny; reverse transcriptase polymerase chain reaction; peptides; amino acid sequences; rapid amplification of cDNA ends; temperature; heat-shock protein 70; introns; starvation
Abstract:
... Heat shock protein 70 (HSP70) is an important member of the heat shock protein family. It plays a key role in the process of protecting cells by facilitating the folding of nascent peptides as well as the cellular stress response. We isolated and sequenced a full-length HSP70 cDNA from planarian Dugesia japonica (designated Djhsp70) using rapid amplification of cDNA ends (RACE). Djhsp70 cDNA is hi ...
DOI:
10.2478/s11756-009-0158-8

5. DNA photolyase of enterococci: possible explanation for its low sunlight inactivation rate

Author:
Mushtaq Hussain; Syeda Qamarunnissa; Saboohi Raza; Javed Qureshi; Abdul Wajid; Sheikh Rasool
Source:
Biologia 2009 v.64 no.5 pp. 852-858
ISSN:
1336-9563
Subject:
DNA; Enterococcus faecalis; Escherichia coli; binding sites; crystal structure; energy efficiency; energy transfer; folic acid; genome; models; prokaryotic cells; sequence alignment; solar radiation
Abstract:
... DNA photolyase is perhaps the most ancient and direct arsenal in curing the UV-induced dimers formed in the microbial genome. Out of two cofactors of the enzyme, catalytic and light harvesting, differences in the latter have provided basis for categorizing photolyases of prokaryotes as folate and deazaflavin types. In the present study, the homology modeling of DNA photolyase of Enterococcus faeca ...
DOI:
10.2478/s11756-009-0168-6

6. Diversity of subalpine and alpine vegetation of the eastern part of the Nízke Tatry Mts in Slovakia: major types and environmental gradients

Author:
Lucia Sekulová; Michal Hájek
Source:
Biologia 2009 v.64 no.5 pp. 908-918
ISSN:
1336-9563
Subject:
Bryopsida; Festuca; Junco; Vaccinium; cluster analysis; correspondence analysis; data collection; grasslands; lichens; mountains; national parks; non-vascular plants; nutrient availability; phytosociology; plant communities; soil; species diversity; topographic slope; Slovakia
Abstract:
... Changes in composition and structure of alpine and subalpine plant communities in relation to ecological factors were analysed in the Nízke Tatry Mts, Slovakia. Species cover values of vascular and non-vascular plants in each vegetation plot were recorded on the nine-degree scale. A data set of 156 relevés of alpine and subalpine vegetation was sampled recently during one year in the eastern part ...
DOI:
10.2478/s11756-009-0176-6

7. Ethanol and urea affect insulin secretion from islets and insulinoma cells by different mechanisms

Author:
Roman Hafko; Martina Orecna; Zuzana Bacova; Jana Kirchnerova; Dušan Chorvat; Vladimír Strbak
Source:
Biologia 2009 v.64 no.5 pp. 1039-1045
ISSN:
1336-9563
Subject:
calcium; ethanol; glucose; insulin; insulin secretion; islets of Langerhans; neoplasm cells; signal transduction; urea
Abstract:
... Secretion of insulin could be stimulated by several ways. Comparison of glucose- and swelling-induced mechanisms in pancreatic islets revealed the involvement of a novel signal transduction pathway with specific features of osmotically stimulated peptide hormone release including Ca2+ independence and resistance to noradrenalin (NA) inhibition. Cell swelling can be induced by hypotonicity or small ...
DOI:
10.2478/s11756-009-0149-9

8. Evaluation of Fe(III) reduction by mitochondria induced with a respiratory substrate NADH or succinate, using a Fe(II)-specific chelator bathophenanthroline disulfonate in Saccharomyces cerevisiae

Author:
Daisuke Tsugama; Shenkui Liu; Tetsuo Takano
Source:
Biologia 2009 v.64 no.5 pp. 877-880
ISSN:
1336-9563
Subject:
NAD (coenzyme); Saccharomyces cerevisiae; adenosine triphosphate; chelating agents; electron transport chain; iron; iron absorption; mitochondria; succinic acid
Abstract:
... Mitochondria are the centers of the cellular iron metabolism. Iron utilization by mitochondria is deeply related to their respiratory chain activity. We isolated mitochondria from Saccharomyces cerevisiae and examined Fe(III) reduction induced by a respiratory substrate (NADH or succinate), using a Fe(II)-specific chelator (bathophenanthroline disulfonate). In the presence of either 50 μM NADH or ...
DOI:
10.2478/s11756-009-0150-3

9. First videotaped infanticide in the common pochard Aythya ferina

Author:
Pavol Prokop; Róbert Trnka; Alfréd Trnka
Source:
Biologia 2009 v.64 no.5 pp. 1016-1017
ISSN:
1336-9563
Subject:
Aythya; birds of prey; breeding; ducklings; females; males; predation
Abstract:
... A growing body of literature suggests that infanticide is common in a variety of animals. However, most reports are concerned with infanticide by males and these evidences are often indirect or questionable. Here we describe the first videotaped non-parental infanticide by a female common pochard (Aythya ferina) which killed one conspecific duckling. Our observation does not suggest that this atta ...
DOI:
10.2478/s11756-009-0162-z

10. Galactoglucomannan oligosaccharides inhibition of elongation growth is in pea epicotyls coupled with peroxidase activity

Author:
Karin Kollárová; Ľudmila Slováková; Edita Kollerová; Desana Lišková
Source:
Biologia 2009 v.64 no.5 pp. 919-922
ISSN:
1336-9563
Subject:
2,4-D; auxins; cell walls; epicotyls; galactose; oligosaccharides; peas; peroxidase
Abstract:
... The effect of galactoglucomannan oligosaccharides — GGMOs, GGMOs-r (GGMOs with reduced reducing ends), and GGMOs-g (GGMOs with reduced number of d-galactose units) on peroxidase activity was determined in pea epicotyls. GGMOs didn’t significantly modify the activity of soluble peroxidases. However, cell wall-associated peroxidases activity increased after GGMOs and GGMOs-r treatment, while in the ...
DOI:
10.2478/s11756-009-0159-7

11. Genetic structure of three marine fishes from the Gulf of Pagasitikos (Greece) based on allozymes, RAPD, and mtDNA RFLP markers

Author:
Apostolos Apostolidis; Katerina Moutou; Costas Stamatis; Zissis Mamuris
Source:
Biologia 2009 v.64 no.5 pp. 1005-1010
ISSN:
1336-9563
Subject:
Mullus barbatus; Mullus surmuletus; Pagellus; allozymes; demersal fish; design for environment; founder effect; genetic markers; genetic variation; heterozygosity; marine fish; mitochondrial DNA; random amplified polymorphic DNA technique; restriction fragment length polymorphism; Greece
Abstract:
... In the present work we used three molecular techniques (allozymes, RAPDs and mtDNA RFLPs) in order to study the genetic structure of three commercial marine species (Mullus surmuletus, Mullus barbatus, and Pagellus erythrinus). Each species was sampled from three locations within the Gulf of Pagasitikos, Greece and from two neighbouring locations outside the Gulf (Trikeri and Alonissos). Values of ...
DOI:
10.2478/s11756-009-0161-0

12. How many heteropteran species can live on alien goldenrods Solidago canadensis and S. gigantea in Europe?

Author:
Magdaléna Roháčová; Pavel Drozd
Source:
Biologia 2009 v.64 no.5 pp. 981-993
ISSN:
1336-9563
Subject:
Nysius senecionis; Orius minutus; Solidago canadensis; habitats; invasive species; species diversity; vegetation; Czech Republic
Abstract:
... During the vegetation periods of 2001–2003 Heteroptera associated with the invasive alien tall goldenrods Solidago canadensis and S. gigantea were studied in seven model habitats in the north-eastern part of the Czech Republic. Heteropterans associated with adjacent growths were also studied in 2002–2003. A set of 3,042 specimens of 127 samples was analyzed with the aim of estimating average speci ...
DOI:
10.2478/s11756-009-0151-2

13. Insect fauna in nests of the Eurasian griffon vulture (Gyps fulvus) in Croatia

Author:
Tvrtko Dražina; Maria Špoljar
Source:
Biologia 2009 v.64 no.5 pp. 969-973
ISSN:
1336-9563
Subject:
Diptera; fauna; islands; nests; Gyps; Dermestidae; Formicidae; Aphidoidea; insects; Blattodea; Adriatic Sea; Croatia
Abstract:
... Qualitative, quantitative and trophic structure of insects found in Eurasian griffon vulture nests were analysed. A total of 249 insects belonging to six orders were found in 18 griffon vulture nests, collected in three colonies on the islands Cres and Plavnik (Adriatic Sea). Eudominant orders were beetles (64.26%) and ants (22.49%). Dermestid beetles were present in all examined nests and compris ...
DOI:
10.2478/s11756-009-0147-y

14. Involvement of cysteine 306 and alanine 63 in the thermostability and oligomeric organization of glucose isomerase from Streptomyces sp. SK

Author:
Mohamed Borgi; Moez Rhimi; Nushin Aghajari; Mamdouh Ben Ali; Michel Juy; Richard Haser; Samir Bejar
Source:
Biologia 2009 v.64 no.5 pp. 845-851
ISSN:
1336-9563
Subject:
Streptomyces; active sites; alanine; cysteine; electrophoresis; glucose; half life; hydrogen bonding; hydrophobicity; models; oligomerization; site-directed mutagenesis; thermal stability
Abstract:
... The implication of the original alanine 63 (Ala63) and the unique cysteine 306 (Cys306) residues in the thermostability of the Streptomyces sp. SK glucose isomerase (SKGI) were investigated by site-directed mutagenesis and homology modelling. The Cys306 to Ala mutation within SKGI dramatically affected its thermal stability by decreasing the half-life from 80 to 15 min at 90°C while the Ala63 to S ...
DOI:
10.2478/s11756-009-0155-y

15. Modulation of biocidal activity of Calothrix sp. and Anabaena sp. by environmental factors

Author:
Balasubramanian Radhakrishnan; Radha Prasanna; Pranita Jaiswal; Saswati Nayak; Prem Dureja
Source:
Biologia 2009 v.64 no.5 pp. 881-889
ISSN:
1336-9563
Subject:
Anabaena; Calothrix; Macrophomina phaseolina; Pythium debaryanum; Synechococcus; Synechocystis; antifungal properties; biocides; biological control agents; environmental factors; ethyl acetate; filtrates; lawns and turf; light intensity; pH; photons; plant pathogenic fungi; temperature; toxicity
Abstract:
... An investigation was undertaken to evaluate a set of cyanobacterial strains in terms of production of biocidal compounds exhibiting allelochemical and fungicidal properties. Two cyanobacterial strains — Anabaena sp. and Calothrix sp. were selected for further investigation, on the basis of their larger inhibition zones on the lawn of Synechocystis and Synechococcus sp. and two phytopathogenic fung ...
DOI:
10.2478/s11756-009-0169-5

16. Molecular identification of mycorrhizal fungi in Dactylorhiza sambucina (Orchidaceae)

Author:
Giuseppe Pellegrino; Francesca Bellusci
Source:
Biologia 2009 v.64 no.5 pp. 893-897
ISSN:
1336-9563
Subject:
Dactylorhiza; Rhizoctonia; color; databases; internal transcribed spacers; mycorrhizal fungi; roots
Abstract:
... We amplified and sequenced internal transcribed spacer (ITS) region of the nuclear ribosomal repeat from fungi in roots of Dactylorhiza sambucina (Orchidaceae) and used the extended database to identify the mycorrhizal fungi. We molecularly identified three ITS recovered from D. sambucina roots, one belonging to Rhizoctonia group, and two to ascomycetes, for the first time in Orchidoidae. In many ...
DOI:
10.2478/s11756-009-0175-7

17. Nutlet surface micromorphology of Turkish Satureja (Lamiaceae)

Author:
Ayla Kaya; Fatih Satil; Fatih Gogel
Source:
Biologia 2009 v.64 no.5 pp. 902-907
ISSN:
1336-9563
Subject:
Satureja; fruits; microstructure; scanning electron microscopy; texture; uncertainty; Turkey (country)
Abstract:
... There are some taxonomic uncertainties within the Turkish members of Satureja. It is extremely difficult to distinguish some of Satureja species because of their great morphological similarity. They are represented by fifteen species in Turkey. In this study, the nutlet surface features of species were examined using both stereoscopic and scanning electron microscopy (SEM). The investigated specie ...
DOI:
10.2478/s11756-009-0156-x

18. Predatory mites of the Phytoseiidae family in integrated and ecological pest management systems in orchards in Slovakia

Author:
Ján Praslička; Andrea Barteková; Janka Schlarmannová; Radovan Malina
Source:
Biologia 2009 v.64 no.5 pp. 959-961
ISSN:
1336-9563
Subject:
Amblyseius andersoni; Euseius; Phytoseiulus; Phytoseius; Typhlodromus pyri; apples; integrated pest management; management systems; orchards; pears; predatory mites; Slovakia
Abstract:
... During 2005–2007, 1,332 individuals of predatory mites were found in integrated and ecological orchards in Slovakia. Seven predatory mite species of the family Phytoseiidae, namely Phytoseius echinus, Phytoseiulus macropilis, Euseius finlandicus, Typhlodromus pyri, Paraseiulus triporus, Amblyseius andersoni and Neoseiulella tiliarum, were identified. Out of 1,332 individuals, 519 (39.0%) were foun ...
DOI:
10.2478/s11756-009-0163-y

19. A new parasitoid (Hymenoptera: Braconidae) of Monochamus alternatus (Coleoptera: Cerambycidae) in China

Author:
Yiping Wang; Xuexin Chen; Hong Wu; Junhua He
Source:
Biologia 2009 v.64 no.5 pp. 942-946
ISSN:
1336-9563
Subject:
Braconidae; Bursaphelenchus xylophilus; Monochamus alternatus; forest pests; immatures; parasitoids; rearing; scientific illustration; taxon descriptions; China
Abstract:
... Bracomorpha ninghais sp. n. (Hymenoptera: Braconidae) is described and illustrated based on individuals reared from the immature stages of the pine sawyer Monochamus alternatus (Coleoptera: Cerambycidae) in Zhejiang of China, which is considered a notorious forest pest associated with the main vector of the pine wood nematode Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae) in China. ...
DOI:
10.2478/s11756-009-0166-8

20. A new subspecies of Centaurea cassia (Asteraceae) from Turkey

Author:
Muhittin Dinç; Ahmet Duran; Bilgehan Bilgili
Source:
Biologia 2009 v.64 no.5 pp. 898-901
ISSN:
1336-9563
Subject:
Abies; Centaurea; biogeography; conservation status; ecology; forests; new subspecies; scientific illustration; taxon descriptions; Turkey (country)
Abstract:
... A new subspecies in sect. Jacea (Mill.) DC., Centaurea cassia Boiss. subsp. dumanii M. Dinç, A. Duran & B. Bilgili subsp. nov., collected by the authors from South Anatolia, is described and illustrated. The new subspecies is restricted to Abies cilicica (Ant. & Kotschy) Carr. subsp. cilicica forest above Göller Yaylası (C6 Adana-Kozan). Diagnostic morphological characters from C. cassia subsp. ca ...
DOI:
10.2478/s11756-009-0172-x