5 documents found, page 1 of 1
Jardins botânicos portugueses: o antes e o depois de 2020
Espírito-Santo, Dalila; Tavares, Ana Cristina; Crespi, António; Gouveia, António; Lobo, Carlos; Freitas, Cátia; Garcia, César; Frias, Iúri
Evidence of adaptive tolerance to nickel in isolates of Cenococcum geophilum fr...
Gonçalves, Susana C.; Martins-Loução, M. Amélia; Freitas, HelenaSelection for metal-tolerant ecotypes of ectomycorrhizal (ECM) fungi has been reported in instances of metal contamination of soils as a result of human activities. However, no study has yet provided evidence that natural metalliferous soils, such as serpentine soils, can drive the evolution of metal tolerance in ECM fungi. We examined in vitro Ni tolerance in isolates of Cenococcum geophilum from serpentine an...
Genetic diversity and differential in vitro responses to Ni in Cenococcum geoph...
Gonçalves, Susana C.; Portugal, António; Gonçalves, M. Teresa; Vieira, Rita; Martins-Loução, M. Amélia; Freitas, HelenaAmplified fragment length polymorphism (AFLP) analysis was used to investigate the genetic diversity in isolates of the ectomycorrhizal fungus Cenococcum geophilum from serpentine and non-serpentine soils in Portugal. A high degree of genetic diversity was found among C. geophilum isolates; AFLP fingerprints showed that all the isolates were genetically distinct. We also assessed the in vitro Ni sensitivity in ...
Spatial variability of arbuscular mycorrhizal fungal spores in two natural plan...
Carvalho, Luís M.; Correia, Patrícia M.; Ryel, Ronald J.; Martins-Loução, M. AméliaGeostatistical techniques were used to assess the spatial patterns of spores of arbuscular mycorrhizal fungi (AMF) in soils from two contrasting plant communities: a salt marsh containing only arbuscular mycorrhizal and nonmycorrhizal plants in a distinct clumped distribution pattern and a maquis with different types of mycorrhiza where most plants were relatively randomly distributed. Also evaluated was the re...
Response of Salvinia spp. to different nitrogen sources: the acid-base regulati...
Martins-Loução, M. Amélia; Wollenweber, Bernd; Raven, John A.This paper shows the importance of acid-base analyses and ∆13C measurements in the evaluation of the responses of Salvinia species' responses to different N sources. It also highlights the importance of these methodologies as potential tools in the study of differences between habitats and nutrient acquisition, particularly N. This study used three different species of Salvinia cultured in the absence of combin...