Publications by authors named "Guilherme S S S Tonelli"

Two Cerrado rust fungi, and , described in 1993 and 1995 and originally assigned to families Phakopsoraceae and Ochropsoraceae, respectively, were subjected to molecular phylogenetic analyses using fragments of the nuc 28S and 18S rDNA and mitochondrial cytochrome oxidase subunit 3 (CO3) gene. Although both taxa were morphologically well placed in their original genera, they were shown to belong in a strongly supported new lineage within the Raveneliineae distant from the Phakopsoraceae and Ochropsoraceae. Therefore, we properly treated this lineage as the new genus now harboring (type species) and .

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The multicellular discoid convex teliospore heads represent a prominent generic feature of the genus . However, recent molecular phylogenetic work has shown that this is a convergent trait, and that this genus does not represent a natural group. In 2000, a rust fungus infecting the Caesalpinioid species Ce (= ) was described as .

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We isolated and further characterized fibroblasts obtained from skin biopsies of three different Brazilian wild species (-maned wolf, -crab-eating fox, -brown brocket deer). The effects of two cryoprotectants, 10% dimethyl sulfoxide (DMSO) and 5% dimethylformamide (DMF), were assessed to determine the most efficient cryopreservation protocol. Such an investigation promotes the creation of germplasm banks, using samples that would otherwise be rejected and permanently lost following the death of the animals.

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Preserving genetic material in cryogenic conditions presents a viable alternative for the protection of species' gene variability. However, there is an enormous need to establish and test cryopreservation protocols that are suitable for each diverse cell type to guarantee technical success in the long run. Considering this, fibroblasts from jaguar (), oncilla (), and pampas cat () were subjected to cell characterization and then cryopreservation in different cryoprotectant solutions (2.

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