Fitoparasitos en Nothofagus Chilenos

López, Hernán Peredo

doi:10.4206/bosque.1987.v8n2-05

Cited by 4 publications

(2 citation statements)

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“…Patagonian Nothofagus form symbiotic associations with ectomycorrhizal (EM) fungi, but neither arbuscular mycorrhizae (AM) nor other root-fungal associations have been reported (Singer and Morello 1960, Garrido 1985, Peredo 1987, Palfner and Godoy 1996a, 1996b, Godoy and Palfner 1997, Fontenla et al 1998, Diehl 2005. On the other hand, the largely planted P. menziesii forms EM and AM associations at the seedling stage (Cázares and Trappe 1993, Cázares and Smith 1996, Horton et al 1998.…”

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confidence: 97%

Occurrence of dark septate endophytes inNothofagusseedlings from Patagonia, Argentina

Salomón

Barroetaveña

Rajchenberg

2013

Southern Forests: a Journal of Forest Science

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Temperate forests of southern Argentina and Chile cover a wide latitudinal and altitudinal range on both sides of the Andes, with Nothofagus species being one of the main tree species. Most of the larger remnants are protected within the limits of national parks and forest reserves. However, some of these are invaded by exotic conifers such as Pseudotsuga menziesii. In order to better understand the mycorrhizal condition within the Nothofagus-P. menziesii interaction, transects were established at six study sites along the effective recruitment area. Three treatments were established: Nothofagus forest without P. menziesii invasion (Forest), Nothofagus-P. menziesii matrix (Interface) and P. menziesii plantation lacking Nothofagus specimens (Plantation). A 2 kg mixed soil sample was taken at each treatment site and kept in brand-new plastic bags. A soil bioassay with Nothofagus seedlings acting as baits was set to evaluate the mycorrhizal inoculum potential and soil-fungi composition at each sampling treatment. Forty percent of the evaluated seedlings were found to be colonised by dark septate endophytes (DSE) fungi. Ectomycorrhizal colonisation percentage was significantly higher in plants growing in Forest soils (mean  57.77%) when compared with Interface (mean   42.53%) and Plantation (mean   44.65%). The high incidence of DSE in young roots of Nothofagus seedlings in this study supports the hypothesis that DSE might be pioneering colonisers of young tree seedlings in secondary successional environments. For future interventions in the forest, either with productive or protective intentions, it should be taken into account the incidence of these fungi, which may have an important positive role in Nothofagus forest post-invasion recovery.Keywords: dark septate endophytes, invasion, mycorrhizae, Pseudotsuga menziesii forests, Nothofagus forests invaded by P. menziesii, and P. menziesii plantations. Materials and methods Soil bioassay setupA soil bioassay with seedlings acting as baits was set up to evaluate mycorrhizal inoculum potential and DSE

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mentioning

confidence: 97%

Occurrence of dark septate endophytes inNothofagusseedlings from Patagonia, Argentina

Salomón

Barroetaveña

Rajchenberg

2013

Southern Forests: a Journal of Forest Science

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“…Untersuchungen von Peredo (1987) [119] sowie Cwielong und Rajchenberg (1992) [36] zeigen, dass Nothofagus-Stämme von einer Vielzahl von pathogenen Pilzen befallen werden. Zu den häugsten Arten zählen Postia peliculosa, Piptoporus portentosus, Ganoderma applanatum, Phlebium chrysocrea und Phellinus spec.…”

Section: Pathogene Und Phytoparasitenunclassified

Managementmodell für die Analyse von Waldbauszenarien in Nothofagus-Beständen

Schwichtenberg¹

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White rot Basidiomycetes isolated from Chiloé National Park in Los Lagos region, Chile

Ortiz

Navarrete

Oviedo

et al. 2013

Antonie van Leeuwenhoek

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Wood decomposition is an important component in forest ecosystems but information about the diversity of fungi causing decay is lacking. This is especially true for the temperate rain forests in Chile. These investigations show results of a biodiversity study of white-rot fungi in wood obtained from Chiloé National Park in Los Lagos region, Chile. Culturing from white-rotted wood followed by sequencing of the complete internal transcribed spacer region of the ribosomal DNA (rDNA) or partial large subunit region of the rDNA, identified 12 different species in the Basidiomycota. All of these fungi were characterized as white rot fungi and were identified with a BLAST match of 97 % or greater to sequences in the GenBank database. Fungi obtained were species of Phlebia, Mycoacia, Hyphodontia, Bjerkandera, Phanerochaete, Stereum, Trametes, and Ceriporiopsis. This report identifies for the first time in Chile the species Ceriporiopsis subvermispora, Hyphodontia radula, Phlebia radiata, Phanerochaete affinis, Peniophora cinerea, Stereum gausapatum, Phlebia setulosa and Phanerochaete sordida. Scanning electron microscopy was used to characterize the type of decay caused by the fungi that were isolated and a combination of selective lignin degraders and simultaneous white rot fungi were found. Fungi that cause a selective degradation of lignin are of interest for bioprocessing technologies that require modification or degradation of lignin without cellulose removal.

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Fitoparasitos en Nothofagus Chilenos

Cited by 4 publications

References 0 publications

Occurrence of dark septate endophytes inNothofagusseedlings from Patagonia, Argentina

Occurrence of dark septate endophytes inNothofagusseedlings from Patagonia, Argentina

Managementmodell für die Analyse von Waldbauszenarien in Nothofagus-Beständen

White rot Basidiomycetes isolated from Chiloé National Park in Los Lagos region, Chile

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