Claviceps Purpurea on Spartina in Coastal Marshes

Mycologia ◽  
1974 ◽  
Vol 66 (6) ◽  
pp. 978-986 ◽  
Author(s):  
Lionel N. Eleuterius ◽  
Samuel P. Meyers
Keyword(s):  
Claviceps Purpurea ◽  
Coastal Marshes

Claviceps purpurea on Spartina in Coastal Marshes

Mycologia ◽  
1974 ◽  
Vol 66 (6) ◽  
pp. 978 ◽  
Author(s):  
Lionel N. Eleuterius ◽  
Samuel P. Meyers
Keyword(s):  
Claviceps Purpurea ◽  
Coastal Marshes

Organochlorine Contaminants in Headwater Peatlands, and Selected Estuary Sites of the Moose River

1986 ◽  
Vol 21 (2) ◽  
pp. 251-256 ◽  
Author(s):  
Robert C. McCrea ◽  
Greg M. Wickware
Keyword(s):  
Atmospheric Deposition ◽  
Organochlorine Pesticides ◽  
River Basin ◽  
Vascular Plants ◽  
Typha Latifolia ◽  
Coastal Marshes ◽  
Surficial Sediments ◽  
Organochlorine Contaminants ◽  
Hexachlorocyclohexane Isomers ◽  
Moose River

Abstract Peatland waters of the Moose River basin, as well as surficial sediments and vascular plants of the estuary were sampled in 1982. Elevated levels of PCBs were found at all five peatland sites; concentrations ranged from 28 to 65 ng/L. Of the seventeen organochlorine pesticides investigated, the hexachlorocyclohexane isomers (a-and y-BHC) were the most prominent with total BHC concentrations ranging from 1.5 to 13.7 ng/L. The presence of these contaminants in ombrotrophic bogs indicated that there was atmospheric deposition of organochlorine contaminants in the basin. Analyses of surficial sediments, collected from tidal flats and coastal marshes, showed that PCBs and organochlorine pesticides were not present. Samples of Triglochin maritima L. seed heads and Typha latifolia L. roots were also free of PCBs.

scholarly journals Ergot Alkaloids in Wheat and Rye Derived Products in Italy

Foods ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 150 ◽  
Author(s):  
Francesca Debegnach ◽  
Simona Patriarca ◽  
Carlo Brera ◽  
Emanuela Gregori ◽  
Elisa Sonego ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Middle Ages ◽  
Plant Pathogen ◽  
Ergot Alkaloids ◽  
Cereal Grains ◽  
Wheat Bread ◽  
Claviceps Purpurea ◽  
Eu Commission ◽  
Ongoing Monitoring ◽  
The Eu

Genus Claviceps is a plant pathogen able to produce a group of toxins, ergot alkaloids (EAs), whose effects have been known since the Middle Ages (ergotism). Claviceps purpurea is the most important representative specie, known to infect more than 400 monocotyledonous plants including economically important cereal grains (e.g., rye, wheat, triticale). EAs are not regulated as such. Maximum limits are in the pipeline of the EU Commission while at present ergot sclerotia content is set by the Regulation (EC) No. 1881/2006 in unprocessed cereals (0.05% as a maximum). This study aimed to investigate the presence of the six principal EAs (ergometrine, ergosine, ergocornine, α-ergocryptine, ergotamine and ergocristine) and their relative epimers (-inine forms) in rye- and wheat-based products. Of the samples, 85% resulted positive for at least one of the EAs. Wheat bread was the product with the highest number of positivity (56%), followed by wheat flour (26%). Rye and wheat bread samples showed the highest values when the sum of the EAs was considered, and durum wheat bread was the more contaminated sample (1142.6 μg/kg). These results suggest that ongoing monitoring of EAs in food products is critical until maximum limits are set.

scholarly journals Assessment of ergot (Claviceps purpurea) exposure in pregnant and postpartum beef cows

2018 ◽  
Vol 98 (4) ◽  
pp. 688-700 ◽  
Author(s):  
T. Grusie ◽  
V. Cowan ◽  
J. Singh ◽  
J. McKinnon ◽  
B. Blakley
Keyword(s):  
Ergot Alkaloid ◽  
Post Partum ◽  
Ergot Alkaloids ◽  
Maximum Size ◽  
Beef Cows ◽  
Plasma Prolactin ◽  
Claviceps Purpurea ◽  
Ambient Temperatures ◽  
Beef Cow ◽  
The Impact

Cows were fed ration for 9 wk containing 5, 48, 201, and 822 μg kg−1 ergot alkaloids. The objective was to evaluate the impact of ergot consumption in beef cow–calf operations. Ergot alkaloids up to 822 μg kg−1 did not alter the weight of peripartum and postpartum beef cows (P = 0.93) or nursing calves (P = 0.08), rectal temperature (P = 0.16), or plasma prolactin concentrations (P = 0.30) at moderate ambient temperatures. Ergot did not influence the time (>1 ng mL−1; P = 0.79) or the progesterone concentration (P = 0.38) at the time of first postpartum rise or the size of the first (14 ± 0.6 mm; P = 0.40) and second (13 ± 0.5 mm; P = 0.41) follicles to ovulate. The maximum size of the first postpartum corpus luteum (CL) was 4 mm larger in the 822 μg kg−1 ergot group compared with the control (P = 0.03) for the first ovulation post partum, but not for the second (P = 0.11). There was no effect of ergot exposure on the number of days until the appearance of the first (43 ± 4 d; P = 0.95) or second (52 ± 4 d; P = 0.98) CL post partum. Ergot alkaloid concentrations up to 822 μg kg−1 did not affect pregnancy rates (X2 = 0.36). In conclusion, ergot alkaloid exposure for 9 wk to concentrations as high as 822 μg kg−1 did not alter performance in pregnant and postpartum beef cattle at moderate ambient temperatures.

VARIATION IN PATHOGENICITY BETWEEN ISOLATES OF CLAVICEPS PURPUREA

1977 ◽  
Vol 57 (3) ◽  
pp. 729-733 ◽  
Author(s):  
L. C. DARLINGTON ◽  
D. E. MATHRE ◽  
R. H. JOHNSTON
Keyword(s):  
Great Plains ◽  
Triticum Aestivum L ◽  
The United States ◽  
Northern Great Plains ◽  
Claviceps Purpurea ◽  
Male Sterile ◽  
Hordeum Vulgare L ◽  
Clear Cut ◽  
Weakly Virulent ◽  
Grass Hosts

Isolates of Claviceps purpurea (Fr.) Tul. originally isolated from many different grass hosts in the northern Great Plains and several other areas in the United States and England were tested for their pathogenicity to selected cultivars or lines of male-sterile wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). While there was a great range in the level of virulence, no clear-cut evidence of specific races was obtained. A few isolates were weakly virulent on two cultivars of male-sterile spring wheat but were highly virulent on the other two cultivars tested. Wheat and barley breeders are advised to use a mixture of isolates in screening germ plasm for resistance to ergot.

scholarly journals Carbon Assimilation by Claviceps purpurea Growing as a Parasite

1976 ◽  
Vol 97 (2) ◽  
pp. 267-276 ◽  
Author(s):  
A. G. DICKERSON ◽  
P. G. MANTLE ◽  
L. J. NISBET
Keyword(s):  
Carbon Assimilation ◽  
Claviceps Purpurea

Claviceps purpurea. [Distribution map].

1973 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
Northern Ireland ◽  
South America ◽  
Uttar Pradesh ◽  
Rio Grande ◽  
Claviceps Purpurea ◽  
Rio Grande Do Sul ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Claviceps purpurea (Fr.). Tul. Hosts: Rye (Seale cereale), other cereals and Gramineae. Information is given on the geographical distribution in AFRICA, Algeria, Canary Islands, Ethiopia, Guinea, Kenya, Malawi, Mauritius, Morocco, Rhodesia, South Africa, Sudan, Tanzania, ASIA, China, India (Punjab, Uttar Pradesh, Madras, Mysore), Iran, Israel, Japan, Korea, Nepal, Philippines, Turkey, USSR (Siberia), AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Belgium, Britain and Northern Ireland, Bulgaria, Czechoslovakia, Denmark, Faroes, Finland, France, Germany, Greece, Hungary, Iceland, Irish Republic, Italy, Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, USSR (general), Yugoslavia, NORTH AMERICA, Canada (general), Mexico, USA, SOUTH AMERICA, Argentina, Brazil (Rio Grande do Sul), Chile, Colombia, Peru, Tristan da Cunha, Uruguay.

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