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| Souza,José Ivanildo de; Schoenlein-Crusius,Iracema Helena; Pires-Zottarelli,Carmen Lídia Amorin; Schoenlein,Norberto Carlos. |
| As biomassas secas dos fungos zoospóricos Saprolegnia subterranea e Pythium torulosum foram avaliadas quanto a biossorção de cobre, manganês e cádmio de soluções aquosas por meio da determinação dos índices "q" (mg de metal adsorvido por g de biomassa) e "R%" (remoção percentual). Os mais elevados índices q foram obtidos quando as biomassas foram colocadas em contato com elevadas concentrações de metais, enquanto que os maiores índices R% foram obtidos em condições de baixas concentrações (p<0,05). Comparativamente, a biomassa de S. subterranea SPC 1244 superou as demais quanto a biossorção de cobre (q = 7,48 mg/g; R% = 49,03), a biomassa de P. torulosum SPC 1425 foi a melhor em relação a biossorção de manganês (q = 4,13 mg/g; R% = 26,71), enquanto que... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biossorção; Metais pesados; Oomycetes; Poluição. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000100021 |
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| Rivera Jiménez, Mally Naty. |
| Con el objetivo de estudiar la marchitez del chile Poblano, se colectaron plantas y frutos con síntomas de esta enfermedad en tres localidades de San Martín Texmelucan, Puebla. Durante el ciclo P/V 2007 se evaluaron 5 tratamientos: Glomus intrarradix, Bat Guano, Agrohomeopatía, Control químico tradicional y testigos, como alternativas para reducir el daño causado por los patógenos. De este experimento se aislaron de la base del tallo y cuello de la raíz, cepas patogénicas las cuales se identificaron mediante estudios filogenéticos y morfológicos como Fusarium oxysporum y F. solani species complexes. Mediante microscopía de luz se observó que estos aislamientos causaron daño a nivel histológico en epidermis, parénquima, endodermis y sistema vascular... |
| Tipo: Tesis |
Palavras-chave: Histopatología; Marchitez; Oomycetos; Transmisión; Doctorado; Producción de Semillas; Histopathology; Wilt disease; Oomycetes; Transmission. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1302 |
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| Jung, T.; Scanu, B.; Bakonyi, J.; Seress, D.; Kovács, G.M.; Durán, A.; Sanfuentes von Stowasser, E.; Schena, L.; Mosca, S.; Thu, P.Q.; Nguyen, C.M.; Fajardo, , S.; González, M.; Pérez-Sierra, A.; Rees, H.; Cravador, A.; Maia, C.; Horta Jung, M.. |
| During various surveys of Phytophthora diversity in Europe, Chile and Vietnam slow growing oomycete isolates were obtained from rhizosphere soil samples and small streams in natural and planted forest stands. Phylogenetic analyses of sequences from the nuclear ITS, LSU, β-tubulin and HSP90 loci and the mitochondrial cox1 and NADH1 genes revealed they belong to six new species of a new genus, officially described here as Nothophytophthora gen. nov., which clustered as sister group to Phytophthora. Nothophytophthora species share numerous morphological characters with Phytophthora: persistent (all Nothophytophthora spp.) and caducous (N. caduca, N. chlamydospora, N. valdiviana, N. vietnamensis) sporangia with variable shapes, internal differentiation of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Breeding system; Caducity; Evolution; Oomycetes; Peronosporaceae; Phylogeny. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/635416 |
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| Mideros, M.F.; Turissini, D.A.; Guayazán, N.; Ibarra-Avila, H.; Danies, G.; Cárdenas, M.; Myers, K.; Tabima, J.; Goss, E.M.; Bernal,, A.; Lagos, L.E.; Grajales, A.; Gonzalez, L.N.; Cooke, D.E.L.; Fry, W.E.; Grünwald, N.; Matute, D.R.; Restrepo, S.. |
| Over the past few years, symptoms akin to late blight disease have been reported on a variety of crop plants in South America. Despite the economic importance of these crops, the causal agents of the diseases belonging to the genus Phytophthora have not been completely characterized. In this study, a new Phytophthora species was described in Colombia from tree tomato (Solanum betaceum), a semi-domesticated fruit grown in northern South America. Comprehensive phylogenetic, morphological, population genetic analyses, and infection assays to characterize this new species, were conducted. All data support the description of the new species, Phytophthora betacei sp. nov. Phylogenetic analyses suggest that this new species belongs to clade 1c of the genus... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Host specificity; Microsatellites; Oomycetes; Species delimitation; Tree tomato. |
| Ano: 2018 |
URL: http://www.repository.naturalis.nl/record/643330 |
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| Cock, A.W.A.M. de; Lodhi, A.M.; Rintoul, T.L.; Bala, K.; Robideau, G.P.; Gloria Abad, Z.; Coffey, M.D.; Shahzad, S.; Lévesque, C.A.. |
| The genus Phytopythium (Peronosporales) has been described, but a complete circumscription has not yet been presented. In the present paper we provide molecular-based evidence that members of Pythium clade K as described by Lévesque & de Cock (2004) belong to Phytopythium. Maximum likelihood and Bayesian phylogenetic analysis of the nuclear ribosomal DNA (LSU and SSU) and mitochondrial DNA cytochrome oxidase subunit 1 (COI) as well as statistical analyses of pairwise distances strongly support the status of Phytopythium as a separate phylogenetic entity. Phytopythium is morphologically intermediate between the genera Phytophthora and Pythium. It is unique in having papillate, internally proliferating sporangia and cylindrical or lobate antheridia. The... |
| Tipo: Article / Letter to the editor |
Palavras-chave: COI; LSU; Oomycetes; Oomycota; Peronosporales; Phytopythium; Pythiales; SSU. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/560055 |
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