scholarly journals Races of Puccinia graminis in the United States During 1995

Plant Disease ◽  
1997 ◽  
Vol 81 (3) ◽  
pp. 306-310 ◽  
Author(s):  
D. V. McVey ◽  
D. L. Long ◽  
J. J. Roberts

Wheat stem rust overwintered in southern Louisiana, southern Texas, southwestern Georgia, northeastern Arkansas, and southwestern South Carolina in the winter of 1994-95. Wheat stem rust caused negligible yield losses in wheat in the United States. Races Pgt-TPMK and QCCJ made up 39 and 31% of all isolates, respectively. Race TPMK comprised 67% of isolates from farm fields. Race Pgt-QCCJ was most common from barley, making up 93% from 47 collections. Six collections from Hordeum jubatum yielded six isolates each of races QCCJ and QFCS, and one isolate of race TPMK. No virulence was found to wheat lines with genes Sr6, 9b, 13, 22, 24, 25, 26, 27, 29, 30, 31, 32, 33, 37, Gt, or Wdl-1. Oat stem rust overwintered in plots at Beeville and Temple, Texas, in a field near San Antonio, and in southern Louisiana. Yield losses due to oat stem rust in 1995 were negligible. Race NA-27, virulent to Pg-1, -2, -3, -4, and -8, was again the predominant race in the United States, comprising 82% of the 225 isolates from 80 collections. NA-5 and NA-16 were the two other races identified from the United States, comprising 11 and 19% of the isolates. Only race NA-29 was found in four collections from Mexico.

Plant Disease ◽  
2002 ◽  
Vol 86 (6) ◽  
pp. 568-572 ◽  
Author(s):  
D. V. McVey ◽  
D. L. Long ◽  
J. J. Roberts

Wheat stem rust caused negligible yield losses in 1997 and 1998. Overwintering sites were found in central and east-central Louisiana in 1997, and in northwestern Florida, northeastern Louisiana, and central Texas in 1998. Race Pgt-TPMK predominated in 1997 with 69% of 100 isolates with race RCRS next at 11%. In 1998, race RCRS predominated with 55% of 132 isolates, and TPMK occurred at 10%. Race QFCS occurred at 8% in 1997 and 31% in 1998. Races QCCS and QTHJ were found in 1997, and races QFBS, RKMQ, RKQQ, and RCMS were found in 1998. Race QCCJ, virulent to barley with the Rpg1 gene for stem rust resistance, was not found from wheat in 1997 or 1998. No virulence was found to wheat lines with Sr 13, 22, 24, 25, 26, 27, 29, 30, 31, 32, 37, Gt, or Wld-1. Oat stem rust was found earlier in 1997 than 1998, but was more widespread in 1998. Race NA27, virulent to Pg-1, -2, -3, -4, and -8, was the predominant race in the United States in 1997 (79% of 116 isolates) and again in 1998 (79% of 116 isolates). NA16, virulent to Pg-1, -3, and -8, was found in the south (1997 and 1998), and NA5, virulent to Pg-2 and -15, and NA10, virulent to Pg-2, -3, and -15, were found in the west (1997).


Plant Disease ◽  
1999 ◽  
Vol 83 (9) ◽  
pp. 871-875 ◽  
Author(s):  
D. V. McVey ◽  
D. L. Long ◽  
J. J. Roberts

Stem rust caused negligible yield losses in 1996 in the United States. Wheat stem rust was first found during the second week of April in a field of soft red winter wheat southwest of Houston, Texas. Race Pgt-TPMK continues to predominate, with 66% of 273 isolates from 100 collections. TPMK represented 76 and 63% of the isolates from wheat in fields and nurseries, respectively. Race QFCS was identified at a frequency of 12 and 29% from farm fields and nurseries, respectively, and 26% overall. Eight other races consisted of 3% or less of the isolates. From barley, race QCCJ, virulent to the Rpg-1 gene for resistance to stem rust, was identified in only 12% of 77 isolates of 27 collections, while TPMK consisted of 64% of the isolates. No virulence was found to wheat lines with genes Sr9b, 13, 22, 24, 25, 26, 27, 29, 30, 31, 32, 37, Gt, or Wld-1. Oat stem rust was first found in late April in southern Louisiana and central Texas. Race NA-27, virulent to Pg-1, -2, -3, -4, and -8, was again the predominant race in the United States, comprising 91% of 93 isolates from 36 collections. NA-5 and NA-16 were the other two races identified, comprising 4% each.


Plant Disease ◽  
2005 ◽  
Vol 89 (2) ◽  
pp. 159-163 ◽  
Author(s):  
P. D. Peterson ◽  
K. J. Leonard ◽  
J. D. Miller ◽  
R. J. Laudon ◽  
T. B. Sutton

A federal and state program operated from 1918 until the 1980s to eradicate common barberry (Berberis vulgaris), the alternate host of Puccinia graminis, from the major areas of cereal production in the United States. Over 500 million bushes were destroyed nationally during the program, approximately 1 million in Minnesota. Some sites in Minnesota where barberry bushes were destroyed remained in the “active” class when eradication was phased out in the 1980s. Active sites were defined as those on which there was still a possibility of emergence of barberry seedlings or sprouts arising from the parent bush. In the present study, from 1998 to 2002, 72 of the approximately 1,200 active sites in Minnesota were surveyed. Areas within 90 m of mapped locations of previously destroyed bushes were searched carefully at each site. Reemerged barberry plants were found on 32 sites. The reproductive status and GPS coordinates were recorded for each reemerged bush. More than 90% of the barberry bushes were found in counties with less than 400 ha of wheat per county, mostly in southeastern Minnesota, but one bush was found in a major wheat-producing county in northwestern Minnesota. Reemergence of barberry may serve as a source of new wheat stem rust races in future epidemics.


Plant Disease ◽  
2005 ◽  
Vol 89 (10) ◽  
pp. 1125-1127 ◽  
Author(s):  
Y. Jin

Stem rust of small grain cereals, caused by Puccinia graminis, is a major disease of wheat, barley, and oat. In order to effectively utilize stem rust resistance in the improvement of small grain cereals, it is necessary to monitor the virulence composition and dynamics in the stem rust population. Races of P. graminis from barberry, wheat, barley, and oat were surveyed across the United States during 2003. Aecial infections on barberry were primarily due to P. graminis f. sp. secalis, as inoculations using aeciospores failed to produce infection on wheat and oat. Race QFCS of P. graminis f. sp. tritici was the most common race identified from wheat and barley. Race QFCS has virulence on stem rust resistance genes Sr5, 8a, 9a, 9d, 9g, 10, 17, and 21 that are used for race identification. Race TTTT was identified in 2003. This race possesses virulence to all 16 stem rust resistance genes present in the wheat stem rust differentials and should be targeted in breeding for stem rust resistance. Race QFCN appeared to be a new race in the U.S. stem rust population. Races QCCJ and MCCF were identified, but at low frequencies. Seven races of P. graminis f. sp. avenae were identified from oat, and races NA-27, NA-29, and NA-67 were the predominant races. Race NA-76 was identified for the first time in the United States.


2019 ◽  
Vol 36 (1) ◽  
Author(s):  
Youssef J. Carter

The Mustafawi Tariqa is a transnational Sufi Order that was initiated in 1966 by the late Cheikh Mustafa Gueye Haydara (d. 1989) in Thiès, Senegal. Yet, only since 1994 has this specific Sufi network reached westward across the water, bringing American Muslims—many of whom are converts—into the larger network. In the United States, the majority of students who have entered the Tariqa and have declared allegiance (bayah) to Shaykh Arona Rashid Faye Al-Faqir are African-Americans who have inserted themselves religiously, culturally, and pedagogically into a West African Sufi tradition which emphasizes religious study and the practice of dhikr (remembrance of God). Shaykh Arona Faye is a Senegalese religious leader who relocated to the southeastern region of the United States from West Africa to spread the religion of Islam and expose American Muslims to the rich West African tradition of spiritual purification and Islamic piety. At the same time, many of those who are African-American members of this tradition have made it a point to travel to Senegal themselves to strengthen transatlantic ties with West African compatriots and visit sacred burial sites in the small city of Thiès. I examine how two sites of pilgrimage for the Mustafawi—Moncks Corner, South Carolina and Thiès, Senegal—play a part in the infrastructure of Black Atlantic Sufi network. Moncks Corner is the central site in which access to the Tariqa’s most charismatic living shaykh, Shaykh Arona Faye, has worked for the past two decades teaching and mentoring those on the Path. On the other hand, Thiès is the location where the Tariqa’s founder is buried and travelers visit the town in order to pay homage to his memory. I show how these sites catalyze mobility and operate as spaces of spiritual refuge for visitors in both local and regional contexts by looking at how a local zawiyah produces movement in relation to a broader tariqa. By looking at pilgrimage and knowledge transmission, I argue that the manner in which esoteric approaches to spiritual care and the embodiment of higher Islamic ethics via the West African Sufi methodology of the Mustafawi informs the manner in which Muslims of varying African descent inhabit a broader diasporic identification of “Black Muslimness.”


2000 ◽  
Vol 36 ◽  
pp. 299-318
Author(s):  
J. R. Oldfield

Some years ago I was invited to spend a day in an elementary school in Columbia, South Carolina. The day began, as I imagine every day began, with the national anthem and the pledge of allegiance to the American flag. The children then sang a song, a ditty really, which began as it ended with the simple refrain: ‘I am special’. Later I was shown some of the work the class had been doing. Across the back of the room were pinned up the children’s attempts to answer a question that had been exercising me, namely what was special about the United States. Some of the responses were fairly predictable. America was special, one seven-year-old wrote, because it was a democracy. Others singled out freedom or liberty as their country’s unique virtue. One brave soul boldly asserted that America was special because Americans were rich, while another thought the secret had something to do with happiness.


Plant Disease ◽  
2018 ◽  
Vol 102 (5) ◽  
pp. 955-963
Author(s):  
Brijesh B. Karakkat ◽  
Vonte L. Jackson ◽  
Paul L. Koch

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.


PEDIATRICS ◽  
1973 ◽  
Vol 51 (6) ◽  
pp. 1095-1099
Author(s):  
Charles U. Lowe ◽  
Gilbert B. Forbes ◽  
Stanley Garn ◽  
George M. Owen ◽  
Nathan J. Smith ◽  
...  

In 1967 the 90th Congress of the United States attached an amendment to the Partnership for Health Act requiring the Secretary of the Department of Health, Education, and Welfare to undertake a survey of "the incidence and location of serious hunger and malnutrition–in the United States." In response to the legislative mandate the Ten-State Nutrition Survey was conducted during the years 1968 through 1970. The sample was selected from urban and rural families living in the following ten states: New York, Massachusetts, Michigan, California, Washington, Kentucky, West Virginia, Louisiana, Texas, and South Carolina. The families selected were those living in some of the census enumeration districts that made up the lowest economic quartiles of their respective states at the time of the 1960 census. During the eight years after the 1960 census the social and economic characteristics found in some of the individual enumeration districts had changed, so that there was a significant numer of families in the surveys with incomes well above the lowest income quartile. Thus, it was possible in analyzing results to make some comparisons on an economic basis. Thirty thousand families were identified in the selection process; 23,846 of these participated in the survey. Data regarding more than 80,000 individuals were obtained through interviews and 40,847 of these individuals were examined. The survey included the following: extensive demographic information on each of the participating families; information regarding food utilization of the family; a 24-hour dietary recall for infants up to 36 months of age, children 10 to 16 years of age, pregnant and lactating women, and individuals over 60 years of age.


PEDIATRICS ◽  
1994 ◽  
Vol 94 (4) ◽  
pp. 544-544
Author(s):  
L. J. Butterfield

On Monday, October 24, 1994 at 2:00 PM, a definitive stamp will be dedicated to Dr Virginia Apgar at the American Academy of Pediatrics (AAP) annual meeting in Dallas. A definitive stamp lasts for years while the commemorative stamp is printed just one year. The United States Postal Service announced the 1994 stamp program on December 7, 1993 during a press conference at the National Postal Museum. Dr Apgar was nominated for a stamp in 1987 by the AAP. The initiative was spawned by the Perinatal Section at the 1985 annual meeting of the AAP in San Antonio.


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