Nuevos registros de Pucciniales sobre Araceae, Bromeliaceae, Dryopteridaceae, Grossulariaceae, Juncaceae, Lamiaceae y Poaceae en páramos de Antioquia, Colombia

2020 ◽  
Vol 44 (170) ◽  
pp. 227-240
Author(s):  
Katherin Maritza Vanegas-Berrouet ◽  
Mauricio Salazar-Yepes
Keyword(s):  
Puccinia Striiformis ◽  
Puccinia Coronata ◽  
Puccinia Recondita ◽  
Santa Inês

El estudio tuvo como objetivo presentar los nuevos registros de Pucciniales recolectados en el departamento de Antioquia en los páramos de Santa Inés, Serranía de las Baldías, Sonsón y del Sol sobre plantas de las familias Araceae, Bromeliaceae, Dryopteridaceae, Grossulariaceae, Juncaceae, Lamiaceae y Poaceae. Se destacan dos nuevos registros para Colombia (Puccinia pseudoatra y Puccinia pygmaea) y catorce nuevos huéspedes parasitados con roya en el país. Estos nuevos huéspedes evidencian cómo los páramos son refugios de royas de importancia económica tales como Kweilingia divina, Puccinia coronata, Puccinia menthae, Puccinia recondita, Puccinia striiformis y Uredo anthurii.

Isometric virus-like particles encapsidate the double-stranded RNA found in Puccinia striiformis, Puccinia recondita, and Puccinia sorghi

1989 ◽  
Vol 67 (11) ◽  
pp. 3420-3425 ◽  
Author(s):  
Matthew J. Dickinson ◽  
A. Pryor
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Puccinia Striiformis ◽  
Puccinia Recondita ◽  
Wheat Leaf Rust ◽  
Base Pairs ◽  
Double Stranded Rna ◽  
Virus Like Particles ◽  
Puccinia Sorghi ◽  
Wheat Leaf

Isolates of Puccinia striiformis (wheat stripe rust), Puccinia recondita (wheat leaf rust), and Puccinia sorghi (maize rust) contain complexes of double-stranded RNA. In each species, there are at least 12 double-stranded RNAs ranging in size from 150 to 5000 base pairs, and the number, size, and quantitative relationships between the double-stranded RNAs are distinctive for a given species. Most, if not all, of the double-stranded RNAs in each species can be extracted from isometric virus-like particles of 40 nm in diameter purified by sucrose and (or) Cs2SO4 gradients. The data indicate that in these three species of Puccinia the double-stranded RNAs are encapsidated in virus-like particles.

Studies on asexual variation in the virulence of oat crown rust, Puccinia coronata f. sp. avenae, and wheat leaf rust, Puccinia recondita

1969 ◽  
Vol 47 (9) ◽  
pp. 1383-1387 ◽  
Author(s):  
P. Bartos ◽  
G. Fleischmann ◽  
D. J. Samborski ◽  
W. A. Shipton
Keyword(s):  
Leaf Rust ◽  
Cytoplasmic Inheritance ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Puccinia Recondita ◽  
Wheat Leaf Rust ◽  
Unique Form ◽  
Cytological Examination ◽  
Oat Crown Rust ◽  
Wheat Leaf

This study was conducted to determine the nature and extent of variation in cereal leaf rusts. Two different races of oat crown rust, Puccinia coronata f. sp. avenae, were recovered from a mixture of single-spored cultures of races 228 and 393. A further subculturing yielded nine non-parental virulence combinations, which could have resulted from somatic recombination.Single-spore isolates of race 228, avirulent on the oat variety Saia were increased, and screened on Saia. Eighty-seven susceptible infections were obtained from a total of nearly 40 000 infections. This variation could result from a high mutation rate.A unique form of variation was observed when Saia-virulent isolates of race 229 were subcultured. Approximately half the subcultures were virulent and half were avirulent on Saia. Further isolations from the avirulent subcultures were all avirulent. Serial propagation of race 229 continued to give cultures virulent and avirulent on Saia. A stable culture of race 229 virulent on Saia was not obtained. Cytological examination of this race 229 culture showed that most of the spores were dikaryotic. Aneuploidy or cytoplasmic inheritance might account for this variability on Saia.Uredial isolates of wheat leaf rust, Puccinia recondita, differing in virulence and color were also studied for the possible occurrence of recombinants. No recombinants were found in six mixtures, each consisting of two different uredial isolates.

scholarly journals Possibility of cereals protection against rusts by resistant breeding method

2013 ◽  
Vol 55 (1) ◽  
pp. 377-388
Author(s):  
Czesław Zamorski ◽  
Bogdan Nowicki ◽  
Małgorzata Schollenberger ◽  
Wojciech Wakulski
Keyword(s):  
Winter Wheat ◽  
Spring Wheat ◽  
Stem Rust ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Brown Rust ◽  
Puccinia Recondita ◽  
Puccinia Graminis ◽  
Breeding Method ◽  
Breeding Lines

In the years 1999-2001 field trials were run on susceptibility of wheat and triticale genotypes to infection by three rust fungi (<i>Puccinia recondita, Puccinia graminis, Puccinia striiformis</i>). The results of the observation of the infection level in following years have been similar. Among genotypes of winter wheat, breeding lines susceptible to <i>Puccinia striiformis</i> infection were rare, but among spring wheat 50% of genotypes were susceptible to yellow rust infection. A much higher level of sensitivity than in the case of winter wheat has been found in winter triticale genotypes. Wheat genotypes were distinguished by the high sensitivity to <i>Puccinia graminis</i> infection, only a few breeding lines were resistant to stem rust. The susceptibility of wheat to brown rust (<i>Puccinia recondita</i>) was a common feature. Triticale genotypes compared to wheat were affected significantly less and majority of them exhibited high level of resistant to brown rust. The use of the breeding method has justification in control yellow rust of winter wheat. Recommended cultivars are almost all fully resistant to <i>Puccinia striiformis</i> infection. The application of this method in selection of spring wheat and triticale is in large past limited. Some of the registered cultivars of spring wheat and triticale are very susceptible to yellow rust. Using the breeding method to protect wheat from stem rust and brown rust is of little practical benefit in our county at this moment. But it can be effecive to control stem and brown rusts of triticale.

Relação Ômegas 6 e 3 em Ovinos da Raça Santa Inês Alimentados com Diferentes Níveis de Inclusão de Casca de Soja em Substituição ao Milho

2011 ◽  
Vol 13 (1) ◽  
pp. 111-114
Author(s):  
J.I. Simionatto ◽  
L.S. Costa ◽  
R.R. Silva ◽  
M.S. Macedo ◽  
A.P. Lira ◽  
...  
Keyword(s):  
Santa Inês

Composição Tecidual e Medidas do Lombo de Cordeiros Santa Inês Recebendo Água com Diferentes Teores de Salinidade

2012 ◽  
Vol 14 (2) ◽  
pp. 227-230
Author(s):  
D.P.V. Castro ◽  
S.M. Yamamoto ◽  
G.G.L. Araújo ◽  
Í.R.R. Albuquerque ◽  
J.H.A. Moura ◽  
...  
Keyword(s):  
Santa Inês

COMPORTAMENTO INGESTIVO DE OVINOS ALIMENTADOS COM TORTA DE GIRASSOL ORIUNDA DA PRODUÇÃO DE BIODIESEL

2019 ◽  
Vol 21 (1) ◽  
pp. 179-187
Author(s):  
Lidiane Fagundes da Silva Monteiro ◽  
Elanne De Paiva Fonseca ◽  
Aline Moreira Portella de Melo ◽  
Allison Ferreira de Lima ◽  
Valdi De Lima Júnior ◽  
...  
Keyword(s):  
Santa Inês

O objetivo deste estudo foi avaliar os efeitos da inclusão de diferentes níveis da torta de girassol sobre o comportamento ingestivo de cordeiros. Utilizaram-se 36 cordeiros mestiços das raças Santa Inês x Dorper alojados individualmente, de forma aleatória, sendo 9 por tratamento, correspondentes ao tratamento controle (0%) e os demais com inclusões ao nível de 5, 10 e 15%. A avaliação do comportamento ingestivo consistiu no registro do tempo gasto com as atividades de ruminação, ócio e alimentação, mediante observação durante 24 horas. As observações comportamentais foram efetuadas em 3 períodos com intervalos de 15 dias. As variáveis estudadas foram submetidas à análise de regressão em nível de 5% de probabilidade. Para os tempos despendidos em ruminação, ócio e alimentação, não houve efeito significativo (P>0,05). Quanto ao período do dia, o maior tempo de ingestão de ração foi no período entre 8-14h e 14-20h. As maiores frequências de ruminação foram durante a madrugada (20-2h) e início da manhã (2-8h). Já de ócio foi entre 20-2h. É possível adicionar torta de girassol até 15% em dietas de ovinos sem comprometer o comportamento ingestivo, estando sob as condições climáticas submetidas.

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