Wyniki wyszukiwania - Biblioteka Nauki

1

Receptory związane z białkami G w odporności wrodzonej bezkręgowców

100%

Andrejko M. , Mizerska-Kowalska M. , Zdzisińska B.

Kosmos

|

2017

|

tom 66

|

nr 4

553-562

PL

Receptory związane z białkami G (GPCRs) stanowią najliczniejszą i bardzo zróżnicowaną grupę receptorów błonowych odpowiedzialnych za przekazywanie sygnałów ze środowiska zewnętrznego do wnętrza komórki. GPCRs uczestniczą niemal w każdym aspekcie życia organizmów, regulując m. in. mechanizmy związane z odpowiedzią immunologiczną, zarówno u kręgowców, jak i bezkręgowców. W pracy opisano ogólną budowę i klasyfikację GPCRs, mechanizmy aktywacji i przekazywania sygnału przez te receptory oraz sposoby regulacji ich aktywności. Ponadto zamieszczono podstawowe informacje na temat mechanizmów rozpoznawania patogenów przez bezkręgowce. W zasadniczej części pracy zaprezentowano wyniki najnowszych badań dotyczące zaangażowania GPCRs w reakcje obronne bezkręgowców, na przykładzie wybranych organizmów modelowych, tj. skrzypłocza atlantyckiego (Limulus polyphemus), muszki owocowej (Drosophila melanogaster) oraz nicienia (Caenorhabditis elegans).

EN

The G-protein-coupled receptors (GPCRs) form the largest and most diverse group of membrane receptors engaged in extracellular signals transduction. GPCRs are involved in almost all aspects of vertebrates and invertebrates' life, including regulation of the immune response mechanisms. The paper describes the general structure and classification of GPCRs. Moreover, it presents the mechanisms of GPCR activation and signal transduction as well as the regulation of GPCR activity. Furthermore, basic information about the mechanisms of pathogen recognition by invertebrates is included. The main part of this review shows the most recent data about the involvement of GPCRs in defense mechanisms of invertebrates such as the horseshoe crab (Limulus polyphemus), fruit fly (Drosophila melanogaster), and nematode (Caenorhabditis elegans).

2

Germline cysts formation in Clitellata

100%

Swiatek P. , Kubrakiewicz J. , Klag J.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2008

|

tom 50

|

nr 1

3

Invertebrates of three small ponds located in stream-pond system

100%

Czerniawski R. , Popko R. , Krepski T. , Domagala J.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

|

2013

|

tom 10

4

Endocrine disruptors - ecotoxicological assays

100%

Lebkowska M. , Zaleska-Radziwill M.

|

nr 3

5

Microsporidian parasites of aquatic invertebrates in Poland preliminary record

100%

Ovcharenko M. , Wita I.

Wiadomości Parazytologiczne

|

1998

|

tom 44

|

nr 3

6

Notes on the use of invertebrates, especially ciliates in studies on pollution and toxicity

100%

Komala Z.

Folia Biologica

|

1995

|

tom 43

|

nr 1-2

7

A summary of alien marine benthic invertebrates in Danish waters

100%

Jensen K. R. , Knudsen J.

|

tom 34

|

nr Suppl.1

8

Chemical cues from predators can induce anti-predator defence in freshwater algae and invertebrates

100%

Mikulski A.

Biological Bulletin of Poznań

|

2000

|

tom 37

|

nr 1

9

Jurassic animals and algae in the flooring of Our Lady of Sorrows Church in Poznan

84%

Antczak M.

Biological Letters

|

2015

|

tom 52

|

nr 1-2

10

Genetic diversity of an invasive invertebrate in an urban environment, as exemplified by the harlequin ladybird Harmonia axyridis (Pallas, 1773)

84%

Rutkowski R. , Kosewska A. , Ceryngier P. , Szczepanski S. , Wawer W. , Twardowska K. , Twardowski J.

Annales Zoologici

|

2017

|

tom 67

|

nr 4

EN

Urbanised areas are capable of exerting a strong impact on the distribution of genetic diversity within populations of animals. Urban invertebrate species are currently either relicts from pre-urban ecosystems, or have immigrated during or following urbanisation. We analysed 10 microsatellite loci in 196 specimens of the harlequin ladybird (Harmonia axyridis), an invasive species in Poland sampled in three of the country’s cities. Of Asiatic origin, this ladybird has been spreading through other continents, including Europe. Results showed that the Polish cities are being invaded by harlequin ladybirds that are uniform in terms of their genetic pool, with no significant genetic differentiation present between the urban populations investigated. Rapid spread and what are probably the large numbers of individuals colonising new areas allow this species to maintain high genetic diversity and avoid bottleneck effects. However, we suggest that urban populations differ in terms of genetic diversity. The highest genetic diversity characterises the most recently invaded area of Olsztyn in the north of Poland. Genetic data further suggest that this population could be still in an expansion phase. The earliest colonising population in Wrocław exhibits signs of a Wahlund effect, suggesting that gene flow among local groups within this urban area could be disturbed or impaired. We conclude that, in the case of an urban population of the harlequin ladybird, successful colonisation is followed by the onset of a decline in genetic diversity, with isolation between local sampling sites appearing. Further studies are required, however, if this process is to be elucidated.

11

Arnold Drozdowski (1924-2014) - obituary

84%

Folia Malacologica

|

2015

|

tom 23

|

nr 2

12

Helicosporidia: a genomic snapshot of an early transition to parasitism

84%

Sun Y. , Pombert J.-F.

Acta Societatis Botanicorum Poloniae

|

2014

|

tom 83

|

nr 4

EN

Helicosporidia are gut parasites of invertebrates. These achlorophyllous, non-photosynthetic green algae are the first reported to infect insects. Helicosporidia are members of the green algal class Trebouxiophyceae and are further related to the photosynthetic and non-photosynthetic genera Auxenochlorella and Prototheca, respectively, the latter of which can also turn to parasitism under opportunistic conditions. Molecular analyses suggest that Helicosporidia diverged from other photosynthetic trebouxiophytes less than 200 million years ago and that its adaptation to parasitism is therefore recent. In this minireview, we summarize the current knowledge of helicosporidian genomics. Unlike many well-known parasitic lineages, the Helicosporidium sp. organelle and nuclear genomes have lost surprisingly little in terms of coding content aside from photosynthesis-related genes. While the small size of its nuclear genome compared to other sequenced trebouxiophycean representatives suggests that Helicosporidium is going through a streamlining process, this scenario cannot be ascertained at this stage. Genome expansions and contractions have occurred independently multiple times in the green algae, and the small size of the Helicosporidium genome may reflect a lack of expansion from a lean ancestor state rather than a tendency towards reduction.

13

Invertebrate and fish environmental preferences as the key factor for lowland riverbed biodiversity

84%

Oglecki P.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

|

2008

|

tom 40

14

ANP [Atrial Natriuretic Peptide] presence in the heart of a tunicate, Ciona intestinalis

84%

Lipari L. , Gerbino A. , Lipari D. , Farina E. V.

Folia Histochemica et Cytobiologica

|

2010

|

tom 48

|

nr 1

68-70

15

Hormonal regulation of cephalopod reproduction in the light of comparative endocrinology of invertebrates

84%

Pokora Z.

Folia Malacologica

|

1999

|

tom 07

|

nr 4

16

The effect of chosen riverbed parameters on different biological elements of lowland Wkra River eco-systems

84%

Oglecki P. , Pachuta K.

Annals of Warsaw Agricultural University. Land Reclamation

|

2005

|

tom 36

17

Benthos and drift of invertebrates, particulary Chironomidae, in a selected cross-section profile of the River Widawka (Central Poland)

84%

Grzybkowska M. , Pakulska D. , Jakubowski H.

Acta Hydrobiologica

|

1987

|

tom 29

|

nr 1

18

The shaping of the diversity of invertebrate species in the urban green spaces of Warsaw

84%

Trojan P.

Memorabilia Zoologica

|

1994

|

tom 49

19

Habitat heterogeneity and biodiversity in the shore zone of water bodies

84%

Pieczynska E.

Acta Hydrobiologica

|

1995

|

tom 37

|

nr Suppl.1

20

An evaluation of an urban environment on the basis of faunistic data

84%

Chudzicka E. , Skibinska E.

Memorabilia Zoologica

|

1994

|

tom 49