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Wyszukujesz frazę "Phytophthora plurivora" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Zróżnicowanie izolatów Phytophthora plurivora z czterech rzek przepływających przez tereny leśne
Occurrence and differentiation of Phytophthora plurivora isolates detected from four rivers running through forest areas
Autorzy:
Orlikowski, L.B.
Trzewik, A.
Ptaszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/1006250.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
tereny lesne
rzeki
rzeka Korabiewka
rzeka Okrzesza
rzeka Rawka
rzeka Zwierzynka
woda
mikroorganizmy
grzyby
Phytophthora plurivora
izolaty grzybowe
zroznicowanie genetyczne
wystepowanie
chorobotworczosc
phytophthora plurivora
occurrence
colonization
genomic diversity
Opis:
Phytophthora plurivora was isolated from 4 rivers running through forest areas independently from detection period. All isolates colonized rhododendron leaf blades, but necrosis spread faster when cultures obtained from October to December were used for plant tissues inoculation. Obtained results showed genomic diversity of P. plurivora isolates. The level of genetic similarity between them varied from 54 to 94%. No correlation between genetic differentiation and pathogenicity of tested isolates was found.
Źródło:
Sylwan; 2012, 156, 11; 819-824
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship between source of water, occurrence, and pathogenicity of Phytophthora plurivora
Współzależność pomiędzy źródłem wody a występowaniem i patogenicznością Phytophthora plurivora
Autorzy:
Orlikowski, L.B.
Trzewik, A.
Ptaszek, M.
Orlikowska, T.
Powiązania:
https://bibliotekanauki.pl/articles/67009.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
relationship
water source
occurrence
pathogenicity
Phytophthora plurivora
soil-borne pathogen
bait
detection
pathogen
Opis:
Phytophthora plurivora was the most often detected species from water using rhododendron baits. The species was isolated from water of two rivers, Jasieniec and Korabiewka, a water pond and a drainage canal from March to November, 2008 (in Korabiewka river also in December). The highest population density of P. plurivora was observed in March and April in water pond and canal, and in May in both analysed rivers. In laboratory trials all tested isolates colonized rhododendron and poplar leaves. Isolates from drainage canal were the most pathogenic for rhododendron. Isolates detected in March from water pond and two rivers caused the quickest spread of necrosis on leaf blades. On poplar leaves the fastest development of necrotic spots was observed when isolates obtained in June and November were used for inoculation, while the isolate from September sample was less pathogenic.
Phytophthora plurivora izolowano od marca do listopada 2008 roku z dwóch rzek Jasieniec (RJ) i Korabiewka (RK), zbiornika wodnego (S1) zlokalizowanego na terenie szkółki oraz kanału (C1) odprowadzającego nadmiar wody z kontenerowni. Największą liczbę izolatów uzyskano w marcu i kwietniu z kanału i zbiornika, a w maju z obu rzek. W warunkach laboratoryjnych wszystkie testowane kultury kolonizowały blaszki liściowe różanecznika i topoli. Izolaty z kanału okazały się najbardziej patogenicznymi dla różanecznika. Kultury z marca, uzyskane z trzech źródeł wody (S1, RJ, RK), powodowały szybszy rozwój nekrozy niż pochodzące z prób z innych miesięcy. Najszybsze tempo zasiedlania tkanek liści topoli obserwowano po inokulacji kulturami uzyskanymi z prób z lipca i listopada, a najwolniejsze w przypadku izolatu z września.
Źródło:
Acta Mycologica; 2012, 47, 1
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zagrożenie szkółek leśnych przez gatunki Phytophthora
Menace of forest nurseries by Phytophthora species
Autorzy:
Orlikowski, L.
Oszako, T.
Ptaszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/973651.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Phytophthora
izolaty
Phytophthora cactorum
Phytophthora plurivora
leśnictwo
szkółki leśne
zagrożenia roślin
czynniki chorobotwórcze
występowanie
phytophthora
occurrence
isolates
sources
colonisation
differentiation
Opis:
Occurrence of Phytophthora spp. in soils of 21 forest nurseries and colonisation of Betula pendula, Fagus sylvatica, Picea abies by isolates of P. cactorum, P. cinnamomi and P. plurivora from different host plants and water were studied. The presence of already mentioned species and P. gonapodyides were noticed in 2/3 of surveyed nurseries with domination of P. cactorum and P. plurivora. All isolates used colonised tissues of tested plants in vitro. In greenhouse trial the isolate of. P. cactorum from pansy did not cause any symptoms on spruce and the disease occurred only sporadically on beech seedlings.
Źródło:
Sylwan; 2011, 155, 05; 322-329
0039-7660
Pojawia się w:
Sylwan
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
Tytuł:
Występowanie i ocena chorobotwórczości izolatów Phytophthora spp. uzyskanych z rzek i zbiornika wodnego
Occurrence of Phytophthora spp. in forest rivers and water pond and colonization of plants by isolates of that genera
Autorzy:
Orlikowski, L.B.
Ptaszek, M.
Trzewik, A.
Wierzchowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/972778.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
cieki wodne
rzeki
rzeka Korabiewka
rzeka Rawka
rzeka Skierniewka
rzeka Zwierzynka
zbiorniki wodne
wody stojace
izolaty grzybowe
grzyby chorobotworcze
Phytophthora
wykrywanie
Phytophthora plurivora
Phytophthora cambivora
Phytophthora citrophthora
Phytophthora megasperma
Phytophthora lacustris
chorobotworczosc
detection
rivers
water pond
colonization
plant
Opis:
Using of rhododendron leaf baits, Phytophthora cambivora, P. citrophthora, P. megasperma, P. plurivora and P. lacustris were detected from 4 rivers running through forests as well as in forest water pond. P. plurivora was the most often detected species from all water sources. The genera was detected all over the year with different population densities in relation to month and water source. Isolates of 4 Phytophthora species colonized roots, stem parts and leaves of tested plants. It points them as a potential pathogens for forest and landscape plants.
Źródło:
Sylwan; 2012, 156, 07; 533-541
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ Bacillus subtilis i Trichoderma asperellum na rozwój sadzonek brzóz zainfekowanych patogenem drobnych korzeni Phytophthora plurivora
Influence of Bacillus subtilis and Trichoderma asperellum on the development of birch seedlings infected with fine root pathogen Phytophthora plurivora
Autorzy:
Oszako, T.
Żółciak, A.
Tulik, M.
Tkaczyk, M.
Stocki, M.
Nowakowska, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/985763.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
fitopatologia lesna
brzoza brodawkowata
Betula pendula
sadzonki
fytoftoroza
Phytophthora plurivora
rozwoj roslin
grzyby antagonistyczne
Trichoderma asperellum
bakterie antagonistyczne
Bacillus subtilis
oomycetes
bacterium
fungus
interactions
betula pendula
Opis:
Phytophthora pathogens cannot be controlled with well−known fungicides, because as oomycetes they do not synthesize chitin and ergosterol. Phytopathogenic microorganisms of Phytophthora genus offers an alternative to pesticides. The aim of the study was to understand the interactions among the host silver birch (Betula pendula), a common forest tree species in Polish lowlands and in lower mountain locations, and its primary pathogen Phytophthora plurivora as well as potential Biological Control Agents Bacillus subtilis and Trichoderma asperellum. The 2−year−old silver birch seedlings were selected for this experiment. Interactions between P. plurivora and B. subtilis, producing peptide antibiotics including polymyxin B and subtiline, stimulated growth of birch seedlings. Comparing to the control a stimulation of both height and root collar diameter of plants was observed when B. subtilis was added into the soil of pots. It is a saprophyte, decomposing organic compounds of plant origin. However, the application of bacterium into the rhizosphere soil stimulated more shoots growth than roots. The application of T. asperellum into the soil stimulated development of roots, and in consequences the above−ground parts of plants. However, in the combination with pathogen, T. asperellum protected the roots only partially. The presence of pathogen and its antagonists increases the biomass of birches compared to control plants. Chlorophyll fluorescence studies proved better parameters like total performance index (PI total) after application of B. subtilis, in contrast, interaction between B. subtilis and P. plurivora negatively affected photosynthesis causing weakening of plants. The higher content of carboxylic acids, observed in the variant with T. asperellum + P. plurivora, indicates the initiation of biochemical defence processes in birch leaves cells.
Źródło:
Sylwan; 2019, 163, 12; 1006-1015
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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