GLORIA

GEOMAR Library Ocean Research Information Access

X

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Online-Ressource
    Online-Ressource
    DNA sequence data and morphology define Cryphonectria species in Europe, China, and Japan
    Canadian Science Publishing ; 2004
    In:  Canadian Journal of Botany Vol. 82, No. 12 ( 2004-12-01), p. 1730-1743
    Details
    In: Canadian Journal of Botany, Canadian Science Publishing, Vol. 82, No. 12 ( 2004-12-01), p. 1730-1743
    Kurzfassung: Cryphonectria includes important tree pathogens as well as species believed to be saprophytes. Recent phylogenetic studies have concentrated on North American and southern hemisphere Cryphonectria spp., but little is known about Asian and European taxa. In this study we identify and differentiate among the species occurring in Europe, China, and Japan using morphological and phylogenetic comparisons among the Cryphonectria species. Phylogenetic comparisons were based on sequence data from the ribosomal ITS operon and two regions in the β-tubulin gene. Unknown Japanese and Chinese isolates showing different cultural features than those of Cryphonectria parasitica (Murrill) M.E. Barr from Japan and the USA, grouped with isolates of Cryphonectria nitschkei (G.H. Otth) M.E. Barr from Quercus spp. and Rhus javanica L. Isolates of Cryphonectria havanensis (Bruner) M.E. Barr from Quercus grosseserrata Blume, Castanopsis cuspidata Schottky, Pyrus sinensis Lindl., and Eucalyptus globulus Labill. also grouped in this phylogenetic clade. We propose that Cryphonectria nitschkei and the fungus that has been referred to as Cryphonectria havanensis in Japan should be treated as a single taxon. Phylogenetic and morphological data also suggest that there are two species currently representing Cryphonectria radicalis (Schwein.: Fr.) M.E. Barr in Europe. One of these species is similar to the type specimen of Cryphonectria radicalis, while the other species probably is new.Key words: Cryphonectria parasitica, Cryphonectria radicalis, Cryphonectria havanensis, Cryphonectria macrospora, Cryphonectria nitschkei, Diaporthales.
    Materialart: Online-Ressource
    ISSN: 0008-4026
    URL: Article
    DOI: 10.1139/b04-135
    Sprache: Englisch
    Verlag: Canadian Science Publishing
    Publikationsdatum: 2004
    ZDB Id: 218116-2
    ZDB Id: 1481926-0
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 2
    Online-Ressource
    Online-Ressource
    Double-stranded RNA and associated virulence in South African isolates of Sphaeropsis sapinea
    Canadian Science Publishing ; 1998
    In:  Canadian Journal of Botany Vol. 76, No. 8 ( 1998-08-01), p. 1412-1417
    Details
    In: Canadian Journal of Botany, Canadian Science Publishing, Vol. 76, No. 8 ( 1998-08-01), p. 1412-1417
    Kurzfassung: Sphaeropsis sapinea (Fr.) Dyko & Sutton is an opportunistic pathogen of various Pinus spp., causing severe shoot blight and dieback. Some isolates of S. sapinea display characteristics such as reduced virulence, reduced growth rate, lack of pigmentation, altered colony morphology, and suppressed conidiation. South African isolates of S. sapinea displaying a range of growth patterns, including reduced growth rate and atypical morphology, were screened for the presence of double-stranded RNA (dsRNA). They were also tested for relative virulence in pathogenicity tests. Double-stranded RNA was isolated by means of phenol extraction and cellulose chromatographic purification. A single species of dsRNA (± 4.3 kilobase pairs in size) was obtained from two slow-growing isolates and two isolates with more regular growth. The virulence of these dsRNA-containing isolates was tested on mature Pinus patula Schlecht. et Cham. trees. Although reduced virulence was positively correlated with slower growth in vitro, the presence of dsRNA could not be linked to either of these characteristics.Key words: double-stranded RNA, hypovirulence, Sphaeropsis sapinea.
    Materialart: Online-Ressource
    ISSN: 0008-4026
    URL: Article
    DOI: 10.1139/b98-113
    Sprache: Englisch
    Verlag: Canadian Science Publishing
    Publikationsdatum: 1998
    ZDB Id: 218116-2
    ZDB Id: 1481926-0
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 3
    Online-Ressource
    Online-Ressource
    Molecular identification and phylogeny of Armillaria isolates from South America and Indo-Malaysia
    Informa UK Limited ; 2003
    In:  Mycologia Vol. 95, No. 2 ( 2003-03), p. 285-293
    Details
    In: Mycologia, Informa UK Limited, Vol. 95, No. 2 ( 2003-03), p. 285-293
    Materialart: Online-Ressource
    ISSN: 0027-5514 , 1557-2536
    URL: Article
    DOI: 10.1080/15572536.2004.11833113
    Sprache: Englisch
    Verlag: Informa UK Limited
    Publikationsdatum: 2003
    ZDB Id: 2076341-4
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 4
    Online-Ressource
    Online-Ressource
    Evidence for inter-specific recombination among the mitochondrial genomes of Fusarium species in the Gibberella fujikuroi complex
    Springer Science and Business Media LLC ; 2013
    In:  BMC Genomics Vol. 14, No. 1 ( 2013), p. 605-
    Details
    In: BMC Genomics, Springer Science and Business Media LLC, Vol. 14, No. 1 ( 2013), p. 605-
    Materialart: Online-Ressource
    ISSN: 1471-2164
    URL: Article
    DOI: 10.1186/1471-2164-14-605
    Sprache: Englisch
    Verlag: Springer Science and Business Media LLC
    Publikationsdatum: 2013
    ZDB Id: 2041499-7
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 5
    Online-Ressource
    Online-Ressource
    β-Tubulin and histone H3 gene sequences distinguish Cryphonectria cubensis from South Africa, Asia, and South America
    Canadian Science Publishing ; 2002
    In:  Canadian Journal of Botany Vol. 80, No. 6 ( 2002-06-01), p. 590-596
    Details
    In: Canadian Journal of Botany, Canadian Science Publishing, Vol. 80, No. 6 ( 2002-06-01), p. 590-596
    Kurzfassung: Cryphonectria cubensis (Bruner) Hodges is the causal agent of an important stem canker disease of Eucalyptus. Previous phylogenetic studies based on sequence data have shown that C. cubensis is distinct from other species of Cryphonectria but that C. cubensis isolates reside in two distinct groups, consistent with geographical origin. Thus, isolates of C. cubensis from South America and South Africa grouped together but apart from those originating from Southeast Asia and Australia. These results were in contrast with the symptoms of Cryphonectria canker in South Africa, which are different from those observed elsewhere in the world. The aim of this study was to use more variable regions of the fungal genome to test whether South African isolates of C. cubensis are genetically distinct from those from other parts of the world. For this comparison, β-tubulin and histone H3 gene sequences were used. Specimens from South America, Southeast Asia, Australia, and South Africa were also compared morphologically. The phylogram emerging from the analysis indicated that South American and Southeast Asian Australian isolates resided in two well-resolved but closely related clades. However, isolates from South Africa were distinct from other groups. This is consistent with ecological aspects of the South African fungus, although no obvious morphological differences between the fungi from the various regions could be found. Our results suggest that the South African fungus represents a species distinct from C. cubensis occurring elsewhere in the world.Key words: β-tubulin, histone H3, molecular phylogeny, Cryphonectria cubensis.
    Materialart: Online-Ressource
    ISSN: 0008-4026
    URL: Article
    DOI: 10.1139/b02-039
    Sprache: Englisch
    Verlag: Canadian Science Publishing
    Publikationsdatum: 2002
    ZDB Id: 218116-2
    ZDB Id: 1481926-0
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 6
    Online-Ressource
    Online-Ressource
    Fire impacts bacterial composition in Protea repens (Proteaceae) infructescences
    Oxford University Press (OUP) ; 2021
    In:  FEMS Microbiology Letters Vol. 368, No. 19 ( 2021-10-26)
    Details
    In: FEMS Microbiology Letters, Oxford University Press (OUP), Vol. 368, No. 19 ( 2021-10-26)
    Kurzfassung: The diverse bacterial communities in and around plants provide important benefits, such as protection against pathogens and cycling of essential minerals through decomposition of moribund plant biomass. Biodiverse fynbos landscapes generally have limited deadwood habitats due to the absence of large trees and frequent fire. In this study, we determined the effect of a fire disturbance on the bacterial communities in a fynbos landscape dominated by the shrub Protea repens using 16S ribosomal RNA amplicon sequencing. The bacterial community composition in newly formed fruiting structures (infructescences) and soil at a recently burnt site was different from that in an unburnt site. Bacteria inhabiting P. repens infructescences were similar to well-known taxa from decomposing wood and litter. This suggests a putative role for these aboveground plant structures as reservoirs for postfire decomposer bacteria. The results imply that inordinately frequent fires, which are commonplace in the Anthropocene, are a significant disturbance to bacterial communities and could affect the diversity of potentially important microbes from these landscapes.
    Materialart: Online-Ressource
    ISSN: 1574-6968
    URL: Article
    DOI: 10.1093/femsle/fnab132
    Sprache: Englisch
    Verlag: Oxford University Press (OUP)
    Publikationsdatum: 2021
    ZDB Id: 1501716-3
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 7
    Online-Ressource
    Online-Ressource
    The Ceratocystis species on conifers
    Canadian Science Publishing ; 1998
    In:  Canadian Journal of Botany Vol. 76, No. 8 ( 1998-08-01), p. 1446-1457
    Details
    In: Canadian Journal of Botany, Canadian Science Publishing, Vol. 76, No. 8 ( 1998-08-01), p. 1446-1457
    Kurzfassung: Seven Ceratocystis species are recognized as having conifers as their primary hosts, and these species comprise a monophyletic group. Despite being morphologically similar, these taxa are distinguished by intersterility and isozyme electromorphs. The first described species in the group, Ceratocystis coerulescens (Münch) Bakshi, is neotypified; it causes bluestain of Picea and Pinus in Europe and North America. A similar species, Ceratocystis pinicola sp.nov., also causes bluestain but has thus far been recorded only on Pinus in Britain. In contrast, Ceratocystis resinifera sp.nov. has been recorded from Picea on continental Europe and North America and invades wounds of living trees. Ceratocystis polonica (Siemaszko) C. Moreau is neotypified and distinguished ecologically from Ceratocystis laricicola Redfern & Minter; both species occur across Eurasia and are associated with Ips bark beetles on Picea and Larix, respectively. A key is presented for these species as well as the recently recognized species from North America, Ceratocystis rufipenni Wingfield, Harrington, & Solheim and Ceratocystis douglasii (Davidson) Wingfield & Harrington, which occur on Picea and Pseudotsuga, respectively.Key words: Ceratocystis, Pinaceae, bluestain, Scolytidae.
    Materialart: Online-Ressource
    ISSN: 0008-4026
    URL: Article
    DOI: 10.1139/b98-145
    Sprache: Englisch
    Verlag: Canadian Science Publishing
    Publikationsdatum: 1998
    ZDB Id: 218116-2
    ZDB Id: 1481926-0
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 8
    Online-Ressource
    Online-Ressource
    Approaches to Forecasting Damage by Invasive Forest Insects and Pathogens: A Cross-Assessment
    Oxford University Press (OUP) ; 2023
    In:  BioScience Vol. 73, No. 2 ( 2023-03-06), p. 85-111
    Details
    In: BioScience, Oxford University Press (OUP), Vol. 73, No. 2 ( 2023-03-06), p. 85-111
    Kurzfassung: Nonnative insects and pathogens pose major threats to forest ecosystems worldwide, greatly diminishing the ecosystem services trees provide. Given the high global diversity of arthropod and microbial species, their often unknown biological features or even identities, and their ease of accidental transport, there is an urgent need to better forecast the most likely species to cause damage. Several risk assessment approaches have been proposed or implemented to guide preventative measures. However, the underlying assumptions of each approach have rarely been explicitly identified or critically evaluated. We propose that evaluating the implicit assumptions, optimal usages, and advantages and limitations of each approach could help improve their combined utility. We consider four general categories: using prior pest status in native and previously invaded regions; evaluating statistical patterns of traits and gene sequences associated with a high impact; sentinel and other plantings to expose trees to insects and pathogens in native, nonnative, or experimental settings; and laboratory assays using detached plant parts or seedlings under controlled conditions. We evaluate how and under what conditions the assumptions of each approach are best met and propose methods for integrating multiple approaches to improve our forecasting ability and prevent losses from invasive pests.
    Materialart: Online-Ressource
    ISSN: 0006-3568 , 1525-3244
    URL: Article
    DOI: 10.1093/biosci/biac108
    RVK:
    WA 15000
    Sprache: Englisch
    Verlag: Oxford University Press (OUP)
    Publikationsdatum: 2023
    ZDB Id: 2066019-4
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 9
    Online-Ressource
    Online-Ressource
    Debaryomyces mycophilus sp. nov., a siderophore-dependent yeast isolated from woodlice
    Oxford University Press (OUP) ; 2002
    In:  FEMS Yeast Research Vol. 2, No. 3 ( 2002-08), p. 415-427
    Details
    In: FEMS Yeast Research, Oxford University Press (OUP), Vol. 2, No. 3 ( 2002-08), p. 415-427
    Materialart: Online-Ressource
    ISSN: 1567-1356 , 1567-1364
    URL: Issue
    URL: Article
    DOI: 10.1111/fyr.2002.2.issue-3
    DOI: 10.1111/j.1567-1364.2002.tb00112.x
    Sprache: Englisch
    Verlag: Oxford University Press (OUP)
    Publikationsdatum: 2002
    ZDB Id: 2052068-2
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...