A Field Trial of Crown Rust (Puccinia coronata f. sp. avenae) as a Biocontrol Agent of Wild Oats on San Clemente Island

2000 ◽  
Vol 19 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Laura D Carsten ◽  
Mareike R Johnston ◽  
Lisa I Douglas ◽  
David C Sands
Keyword(s):  
Field Trial ◽  
Biocontrol Agent ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Wild Oats ◽  
San Clemente Island

INHERITANCE OF CROWN RUST RESISTANCE GENES IN AVENA STERILIS COLLECTIONS FROM ISRAEL, PORTUGAL, AND TUNISIA

1971 ◽  
Vol 13 (2) ◽  
pp. 251-255 ◽  
Author(s):  
G. Fleischmann ◽  
R. I. H. McKenzie ◽  
W. A. Shipton
Keyword(s):  
Resistance Genes ◽  
Rust Resistance ◽  
Dominant Gene ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Avena Sterilis ◽  
Wild Oats ◽  
Puccinia Coronata Avenae ◽  
Dominant Genes ◽  
Rust Resistance Genes

The inheritance of genes in three collections of Avena sterilis wild oats conferring resistance to races 216, 264, 295, 305, 326, 330, 332, and 446 of crown rust, Puccinia coronata avenae, was investigated. C. I. 8081 from Portugal contained a partially dominant gene, designated Pc47, which conferred resistance to all eight races. CW486 from Tunisia had a dominant gene, designated Pc50, which gave resistance to all races except 295, 326, and 446. F158 from Israel had two dominant genes; one, designated Pc48, conferred resistance to all the races but 305, while the second, designated Pc49, conferred resistance to races 216, 326, 330, 332, and 446. Genes Pc47, Pc48, Pc49, and Pc50 were inherited independently of each other and of those genes previously isolated from A. sterilis.

The effectiveness of resistance genes from wild oats, Avena sterilis, against oat crown rust, Puccinia coronata f. sp. avenue, in Canada in 1969

1970 ◽  
Vol 48 (12) ◽  
pp. 2117-2121
Author(s):  
George Fleischmann
Keyword(s):  
Middle East ◽  
Resistance Genes ◽  
Regional Differences ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Western Canada ◽  
Wild Oat ◽  
Avena Sterilis ◽  
Wild Oats ◽  
Oat Crown Rust

All isolates of oat crown rust, Puccinia coronata f. sp. avenae, identified in Canada in 1969 were inoculated onto 12 different lines containing resistance from wild oats, Avena sterilis, collected in Europe and the Middle East. Lines that contain resistance genes Pc-38 and Pc-39, and wild oat collections CI 8081 and F158, provide effective resistance to nearly every culture of crown rust. Regional differences in the level of virulence of crown rust cultures isolated from eastern and western Canada were observed on lines that contain A. sterilis resistance, with cultures of crown rust isolated from the east being generally less virulent than those from western Canada.

scholarly journals Virulence of Oat Crown Rust in Brazil and Uruguay

Plant Disease ◽  
2005 ◽  
Vol 89 (8) ◽  
pp. 802-808 ◽  
Author(s):  
K. J. Leonard ◽  
J. A. Martinelli
Keyword(s):  
Avena Sativa ◽  
Western Siberia ◽  
Specific Resistance ◽  
The United States ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
South American ◽  
Oat Crown Rust ◽  
High Virulence ◽  
Important Disease

Race-specific resistance to crown rust, the most important disease of oat (Avena sativa) in Bra-zil, often fails within a few years of use in Brazilian cultivars. Virulence of 144 isolates of Puccinia coronata from cultivated oat in Brazil in 1997 to 1999 and 36 isolates from Uruguay in 1994-95 and 1998 was tested on a set of 27 oat crown rust differentials lines, each with a different Pc gene for race-specific resistance. Frequencies of virulence and mean virulence complexity were compared among these five collections from Brazil and Uruguay as well as with mean virulence complexity for a collection of 17 isolates from cultivated oat in western Siberia in Russia. Virulence-avirulence for each of the 27 Pc genes was polymorphic in both Brazil and Uruguay. Virulence frequencies were similar for collections from Brazil in 1998 and 1999 and for the collection from Uruguay from 1998, but there were large differences between the 1997 collection and the 1998 and 1999 collections from Brazil. Mean virulence complexity in both Brazil and Uruguay was greater than reported in the United States and much greater than in the Russian collection of P. coronata. A large number of races of P. coronata were found, with no more than five isolates of any race found in a single year in Brazil or Uruguay. The high virulence complexity and great diversity of virulence polymorphisms in Brazil and Uruguay make it unlikely that race-specific resistance can be effective there even though the South American populations of P. coronata are apparently entirely asexual.

scholarly journals Incidence and Distribution of Puccinia coronata and P. graminis on Turfgrass in the Midwestern United States

Plant Disease ◽  
2018 ◽  
Vol 102 (5) ◽  
pp. 955-963
Author(s):  
Brijesh B. Karakkat ◽  
Vonte L. Jackson ◽  
Paul L. Koch
Keyword(s):  
United States ◽  
Stem Rust ◽  
Kentucky Bluegrass ◽  
The United States ◽  
Primary Objective ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Midwestern United States ◽  
Fungal Populations ◽  
Relationship Of

Crown rust (caused by Puccinia coronata) and stem rust (caused by P. graminis) are two common and destructive diseases of turfgrass in the United States. Crown rust has been associated with perennial ryegrass and stem rust with Kentucky bluegrass when identified based solely on fungal morphology. However, recent studies using molecular identification methods have indicated the host–pathogen relationship of rusts on turf to be more complex. Our primary objective was to quickly and accurately identify P. coronata and P. graminis in symptomatic turfgrass leaves over 3 years on turfgrass samples from across the Midwestern United States. Between 2013 and 2015, 413 samples of symptomatic cool-season turfgrass from Wisconsin and surrounding states were screened using real-time polymerase chain reaction. Of these samples, 396 were Kentucky bluegrass and 17% of them contained P. coronata, 69% contained P. graminis, and 13% contained both P. coronata and P. graminis. In addition, both year and location effects were observed on the distribution of Puccinia spp. collected annually from two locations in southern Wisconsin. This research supports previous conclusions that have identified variability among P. graminis and P. coronata host relationships on turfgrass, and further demonstrates that rust fungal populations on Kentucky bluegrass may not be consistent between locations in the same year or over multiple years at the same location. The increasing evidence of variation in the turfgrass rust populations will likely affect future rust management and turfgrass breeding efforts.

scholarly journals CROWN RUST ON PERENNIAL RYEGRASS IN FIELD TRIALS

1989 ◽  
pp. 253-254
Author(s):  
H.S. Easton ◽  
B.M. Cooper ◽  
T.J. Frasers ◽  
K.H. Widdup
Keyword(s):  
Perennial Ryegrass ◽  
Field Trials ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Rust Infection

Crown rust infection of 11 perennial ryegrass cultivars vaned significantly and consistently over 6 sites. 'Grasslands Ariki,' the new cultivar 'Yatsyn' and Grasslands selections G26 and G33 were less infected than 'Grasslands Nui', 'Ellett' or 'Grasslands Ruanui'. 'Droughtmaster' and 'Marathon' proved more susceptible than most. Keywords: Crown rust, Puccinia coronata. perenmal ryegrass

Genetic Diversity in Australasian Populations of the Crown Rust Pathogen of Ryegrasses (Puccinia coronata f.sp. lolii)

2009 ◽  
pp. 275-284 ◽  
Author(s):  
Peter Dracatos ◽  
Jeremy Dumsday ◽  
Alan Stewart ◽  
Mark Dobrowolski ◽  
Noel Cogan ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Rust Pathogen

Genetic Diversity in Australasian Populations of the Crown Rust Pathogen of Ryegrasses (Puccinia coronata f.sp. lolii)

2008 ◽  
pp. 1-10
Author(s):  
Peter Dracatos ◽  
Jeremy Dumsday ◽  
Alan Stewart ◽  
Mark Dobrowolski ◽  
Noel Cogan ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Rust Pathogen
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