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    Wyświetlanie 1-5 z 5
    Tytuł:
    Content of glycogen and trehalose and activity of alpha-amylase and trehalase in Galleria mellonella larvae infected with entomopathogenic nematodes Steinernema affinis and S. feltiae
    Autorzy:
    Zoltowska, K
    Lopienska-Biernat, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/839414.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    Galleria mellonella
    Steinernema feltiae
    insect host
    amylase
    trehalase
    host
    parasite
    trehalose
    glycogen
    parasitology
    alpha-amylase
    nematode
    larva
    Steinernema affinis
    entomopathogenic nematode
    Opis:
    Introduction. The influence of infection with two species of entomopathogenic nematodes of Steinernematidae family on metabolism of glycogen and trehalose of the host was studied. Material and methods. Last instar larvae (L₇) of Galleria mellonella were experimentally infected with Steinernema affinis and S. feltiae. At 6, 12, 18 and 24 h after infection concentrations of trehalose and glycogen as well as activity of trehalase and α-amylase were determined. Results. The content of glycogen was lower in insects infected with S. feltiae than in the controls and animals infected with S. affinis. The content of trehalose was higher in insects from both infected groups than in the controls. Its concentration was slightly higher in larvae infected with S. affinis than in those infected with S. feltiae. The activity of α-amylase after infection with S. affinis was low. It was significantly higher in insects infected with S. feltiae. In animals of both infected groups, following a significant reduction at 6 h, the activity of trehalase remained at a similar level, higher than in the controls. In the paper the effects of infection with (i) different species of entomopathogenic nematodes and (ii) the importance of the developmental stage of the insect-host for changes in its metabolism of glycogen and trehalose were discussed.
    Źródło:
    Annals of Parasitology; 2006, 52, 2
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Content of glycogen and trehalose and activity of alpha-amylase and trehalase in Galleria mellonella larvae infected with entomopathogenic nematodes Steinernema affinis and S. feltiae
    Autorzy:
    Żółtowska, K.
    Łopieńska-Biernat, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2144330.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    Galleria mellonella
    Steinernema feltiae
    insect host
    amylase
    trehalase
    host
    parasite
    trehalose
    glycogen
    parasitology
    alpha-amylase
    nematode
    larva
    Steinernema affinis
    entomopathogenic nematode
    Opis:
    Introduction. The influence of infection with two species of entomopathogenic nematodes of Steinernematidae family on metabolism of glycogen and trehalose of the host was studied. Material and methods. Last instar larvae (L₇) of Galleria mellonella were experimentally infected with Steinernema affinis and S. feltiae. At 6, 12, 18 and 24 h after infection concentrations of trehalose and glycogen as well as activity of trehalase and α-amylase were determined. Results. The content of glycogen was lower in insects infected with S. feltiae than in the controls and animals infected with S. affinis. The content of trehalose was higher in insects from both infected groups than in the controls. Its concentration was slightly higher in larvae infected with S. affinis than in those infected with S. feltiae. The activity of α-amylase after infection with S. affinis was low. It was significantly higher in insects infected with S. feltiae. In animals of both infected groups, following a significant reduction at 6 h, the activity of trehalase remained at a similar level, higher than in the controls. In the paper the effects of infection with (i) different species of entomopathogenic nematodes and (ii) the importance of the developmental stage of the insect-host for changes in its metabolism of glycogen and trehalose were discussed.
    Źródło:
    Wiadomości Parazytologiczne; 2006, 52, 2; 103-107
    0043-5163
    Pojawia się w:
    Wiadomości Parazytologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biotechnology for developing host-plant resistance to biotic stresses
    Autorzy:
    Kaniewski, W K
    Beachy, R.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/46582.pdf
    Data publikacji:
    2003
    Wydawca:
    Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
    Tematy:
    weed
    virus
    biotic stress
    host plant
    nematode
    bacteria
    fungi
    resistance
    insect
    biotechnology
    Źródło:
    Acta Scientiarum Polonorum. Agricultura; 2003, 02, 2
    1644-0625
    Pojawia się w:
    Acta Scientiarum Polonorum. Agricultura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological and molecular characterization of entomophthorales (Entomophthoromycota: Entomophthoromycotina) from Argentina
    Autorzy:
    Manfrino, Romina G.
    Castrillo, Louela A.
    López Lastra, Claudia C.
    Toledo, Andrea V.
    Ferrari, Walter
    Jansen, Annette B.
    Powiązania:
    https://bibliotekanauki.pl/articles/11543394.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    morphological characteristics
    molecular characteristics
    Entomophthorales
    Entomophthoromycota
    Entomophthoromycotina
    insect pest
    host range
    Argentina
    Opis:
    We characterized 17 insect-pathogenic entomophthoralean fungal isolates (Entomophthoromycotina: Entomophthorales) using morphological and molecular techniques. We identified four species from various insect hosts: (i) Entomophthora planchoniana, six specimens from aphids; (ii) Pandora neoaphidis, three specimens from aphids; (iii) Zoophthora phalloides from an aphid; and (iv) Z. radicans, seven specimens from insects in the orders Diptera, Hemiptera, and Lepidoptera. Analysis of ITS1 data from E. planchoniana showed clustering in accordance to aphid host species. Entomophthora planchoniana from Macrosiphum euphorbiae clustered together, separate from the isolate from Myzus persicae. The P. neoaphidis specimens clustered with sequences from other aphid-pathogenic Pandora species in GenBank. In this study, Z. phalloides from Brevicoryne brassicae and Z. radicans from an unidentified species of Chironomidae (Diptera) in Argentina were characterized for the first time. The present study was initiated to elucidate the taxonomy of the entomophthoralean fungi in Argentina according to their morphological and molecular characters. The presented results emphasize the significance of the combination of molecular data and information on morphology, ecology, and host range for accurate identification of entomophthoralean and allied genera.
    Źródło:
    Acta Mycologica; 2020, 55, 2; 5522
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Współwystępowanie nicieni owadobójczych i szkodników drzew w zbiorowiskach leśnych w północnej Polsce
    Co-occurrence of entomopathogenic nematodes and tree pests in forest communities of northern Poland
    Autorzy:
    Dzięgielewska, M.
    Skwiercz, A.T.
    Powiązania:
    https://bibliotekanauki.pl/articles/985868.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    metody biologiczne
    nicienie owadobojcze
    Steinernematidae
    Heterorhabidtidae
    zywiciele potencjalni
    owady
    szkodniki roslin
    wspolwystepowanie
    steinernema
    heterorhabditis
    woodland
    insect pests
    host preference
    Opis:
    Repeating outbreaks of the Scots pine pests, effecting in stands damages, are the most important problems of forest protection. In extreme cases they pose a real threat to the stability of stands. Naturally occurring entomopathogenic nematodes are important regulatory factors in insect populations. Many species are employed as biological agents to control the insect pests. The objectives of this research was to describe the influence of potential forest pests on occurrence and abundance of entomopathogenic nematodes. Entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) were studied in woodland soils in northern Poland. Soil samples were collected from 2010 to 2015 from coniferous forests with abundant suitable insect hosts: the beetle grubs of Melolontha melolontha L. living in the soil (Coleoptera: Scarabaeidae) and foliage feeders Diprionidae spp. (Hymenoptera) and the caterpillar of Dendrolimus pini L., Panolis flammea Den. et Schiff. and Bupalus piniarius L. butterflies. Nematodes occurred in all type of forest and 171 soil samples were taken from 40 localities. Each study plot was approximately 100 m2 and 20 cm deep; 50 individual samples were taken using Egner’s stick, making the bulk sample approximately 600 cm3 in volume. The presence of entomopathogenic nematodes in the soil samples were determined using a standard Galleria mellonella baiting technique. Entomopathogenic nematodes were isolated from 52 soil samples (30,4%). Three species of the genus Steinernema (Steinernema feltiae, S. affine, S. silvaticum) and anyone of the genus Heterorhabditis were recorded. S. feltiae was the most common species and distinguished by the largest ecological flexibility especially to hosts. The largest number of S. feltiae samples was isolated in the places of butterfly outbreak P. flammea and also in the places of mass occurrence of beetle grubs of M. melolontha. In the feeding places of beetle of Scarabaeidae a high share of S. affine was noted too. The more rarely noted was S. silvaticum especially in outbreak of Diprionidae spp. The most abundance of entomopathogenic nematodes community was 140 000 ind./m2 in sites with M. melolontha grubs.
    Źródło:
    Sylwan; 2018, 162, 12; 1007-1017
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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