Species richness and seasonal abundance of ectomycorrhizal fungi in plantations of Eucalyptus dunnii and Pinus taeda in southern Brazil

Abstract

The abundance and diversity of ectomycorrhizal fungi (EMF) was assessed based on the collection of basidiocarps during 12 months comprising the spring of 1995, and the summer, autumn, and winter of 1996, in three stands of young, middle-aged, and rotation age plantations of Pinus taeda and Eucalyptus dunnii, in the state of Santa Catarina, southern Brazil. A total of 3,085 collections yielded 34 presumed EMF taxa in ten genera, including mushroom-like and sequestrate species. Fruiting patterns of EMF differed with host and season, and host specificity was apparent in some. The overall relative importance (RI) and the Shannon diversity index (H) suggested that stands of E. dunnii had a more diverse aboveground EMF community than those of P. taeda. Overall, species of Scleroderma and Laccaria were not only the most abundant but also had the highest biomass values. The results show that a small number of species of abundant biomass and a larger number of species of less-abundant biomass characterize each forest class.

Bacteria associated with ectomycorrhizas of slash pine (Pinus elliottii) in south-eastern Queensland, Australia

“…have also been reported to be associated with Pinus spp. plantation forests in New Zealand (Chu‐Chou & Grace, 1988) and southern Brazil (Giachini et al , 2004). Moreover, ectomycorrhizas with similar morphology to WT have been reported from P. elliottii plantations in its native habitat (Sylvia & Jarstfer, 1997).…”

Taxonomic studies of Amanita muscaria (L.) Lam (Amanitaceae, Agaricomycetes) and its infraspecific taxa in Brazil

“…fl avivolvata occurs in the Brazilian states of Parana, Rio Grande do Sul, Santa Catarina and São Paulo. Specimens collected in Brazil by Guerrero & Homrich (1983), Fusco-Mucci & Yokomizo (1985, Figueiredo et al (1996), Giachini et al (2000Giachini et al ( , 2004, Meijer (2001Meijer ( , 2006 and Sobestiansky (2005) might represent A. muscaria var. fl avivolvata, because the specimens were found primarily in proximity to P. elliottii and P. taeda, two species imported from North America.…”

Influência do óleo essencial na micorrização e no crescimento de mudas de eucalipto

“…Os trabalhos encontrados na literatura sobre a otimização da colonização ectomicorrízica e, consequentemente, sobre o maior desenvolvimento das plantas inoculadas, baseiam-se nos modos de inoculação e dosagens utilizadas (Pêra & Parladé, 2005;Rossi et al, 2007), colonização consorciada (Bonnassis, 2007), especificidade micorrízica (Meijer, 2001;Duñabeitia et al, 2004;Giachini et al, 2004;Mello et al, 2006;Souza et al, 2008) e inoculação das plantas com mais de um isolado (Probanza et al, 2001;Dormenech et al, 2004;Rincón et al, 2005).…”