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    Wyświetlanie 1-3 z 3
    Tytuł:
    Monitorowanie chorób wywołanych przez patogeniczne lęgniowce za pomocą analiz DNA
    Monitoring of diseases caused by pathogenic oomycetes using DNA analysis
    Autorzy:
    Nevoigt, F.
    Oszako, T.
    Nowakowska, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008933.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    fitopatologia
    czynniki chorobotworcze
    grzyby
    legniowce
    Oomycetes
    choroby grzybowe
    monitoring
    Phytophthora
    Pythium
    diagnostyka molekularna
    analiza DNA
    metoda real time PCR
    phytophthora spp.
    real time pcr
    its−dna molecular diagnostics
    baiting
    rhododendrons
    Opis:
    Phytophthora species are best known as pathogens of agricultural crops (e.g. P. infestans), but there are also invasive pathogens destroying forest atands (e.g. P. ramorum in the USA) or even whole forest ecosystems (e.g. P. cinnamomi in Australia). Still, little is known about indiginous species, especially in wild ecosystems. Rhododendrons are well known as a reservuar for oomycetes’ development. The main objectives of the present study were to develop the new tool for the identification of pathogenic Phytophthora and Phytium based on DNA sequence analysis of the ITS1, 5.8S gene and ITS2 region. Rhododendrons leaves served as specific plant baits. In order to reach the goal the real time PCR, the nested PCR and the DNA sequencing of the rDNA ITS region were carried out. The genomic DNA was extracted form the symptomatic rhododendron leaves. Three distinct Oomycetes species: Phytophthora cactorum, Pythium mercuriale and em>Pythium recalcitrans were detected in rhododendron leaves and registered in GenBank.
    Źródło:
    Sylwan; 2010, 154, 07; 450-455
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Możliwości biologicznej ochrony roślin przed chorobami w szkółkarstwie, ze szczególnym uwzględnieniem lęgniowców (Oomycetes) i grzybów z rodzaju Fusarium
    The possibilities of biologically protecting plants against diseases in nurseries, with special consideration of Oomycetes and Fusarium fungi
    Autorzy:
    Okorski, A.
    Oszako, T.
    Nowakowska, J.A.
    Pszczółkowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312848.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    szkolkarstwo lesne
    ochrona lasu
    ochrona roslin
    szkolki lesne
    czynniki chorobotworcze
    legniowce
    Oomycetes
    Phytophthora
    Phytium
    Fusarium
    biologiczne metody ochrony roslin
    organizmy antagonistyczne
    zwalczanie chorob roslin
    forest protection
    forest nurseries
    biological control
    Opis:
    Achieving high quality propagative material is difficult today due to the limited number of pesticides recommended for use. Simultaneously, EU regulations on Integrated Pest Management (IPM) in forest nurseries came into a force, requiring a search for alternative plant protection methods that are safe for humans, animals and the environment. In this paper, we present the possibilities of using bio-fungicides against diseases in forest nurseries, their mechanisms of action, as well as the direction of their development (according to IPM rules). We reviewed the results achieved by different research teams presenting the possibilities and trends in combatting Oomycetes and Fusarium spp. pathogens currently having the most important economic impact.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 3; 301-321
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Patogenne lęgniowce z rodzaju Phytophthora - nowe zagrożenie lasów w Europie
    Pathogenic oomycetes of Phytophthora genus - a new threat to forests in Europe
    Autorzy:
    Ajchler, M.
    Łobocka, M.
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/986789.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    fitopatologia lesna
    zagrozenia drzewostanow
    czynniki chorobotworcze
    legniowce
    Oomycetes
    Phytophthora
    fytoftoroza
    identyfikacja
    epidemiologia
    Phytophthora alni
    Phytophthora cactorum
    Phytophthora cambivora
    Phytophthora cinnamomi
    Phytophthora citrophthora
    Phytophthora quercina
    Phytophthora plurivora
    Phytophthora ramorum
    ochrona lasu
    zwalczanie chorob roslin
    oomycetes
    phytophthora
    molecular typing
    plant pathogens
    biocontrol
    Opis:
    Pathogenic oomycetes represented mainly by the species of Phytophthora genus are among the most dangerous plant pathogens. They pose a serious threat for agricultural as well as wild plants, and are involved in forest decline worldwide. Over 140 pathogenic Phytophthora species have been identified so far. The common infection symptoms include rotting of below− and above− ground parts of plants, causing weakness and slow decline of infected trees. The economic losses caused by certain Phytophthora species may rich even 100%. Globalization and border opening have facilitated the transport of plant material between countries and continents, thus increased the risk of transfer of various Phytophthora genus representatives to new geographical locations. Global warming (e.g. mild winters) have facilitated the expansion of species from southern to northern Europe. Among Polish Phytophthora isolates are species that have previously been known only in nurseries (e.g. P. cactorum), but nowadays they are also isolated from forests (e.g. oak stand in the Krotoszyn Plateau). It suggests the pathway from nurseries to stands with plant for plantings and attached soil. There are also new species, that have not been isolated so far in the world (P. polonica) or found far away from Poland (P. fragaliaefolia in Japan on strawberry). The possible natural pathways are birds and water courses. In Mazowsze and Wielkopolska regions (C and W Poland) the polyphagous P. cinnamomi was found on pedunculate oaks (Quercus robur). This species causes significant damage to red oak forest in France, but also threats Jarrah forests in the Australian ecosystem (it attacks ca. 1000 species of plants). Fortunately, in addition to time consuming and laborious classic methods of Phytophthora identification, based on morphology and physiological properties, molecular methods that are based on immunological tests and chromosomal or mito− chondrial DNA markers identification have come into common use. Despite morphological similarity to true fungi, oomycetes are more closely related to diatoms and brown algae, and have several structural features that differentiate them from fungi, including the cell wall composed of cellulose instead of chitin. That is one of the reasons that fungicides have a limited use in the fight with Phytophthora infections. Additionally, type of ecological niches that are settled by pathogenic oomycetes (root remnants in soil, watercourses) hinders the chemical combating. Biocontrol, i.e. the use of interspecies interactions between microorganisms (bacteria, fungi) to limit the growth and development of pathogens, seems to be a reasonable alternative.
    Źródło:
    Sylwan; 2017, 161, 10; 870-880
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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