Pyrenophora erythrospila. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot

Abstract A description is provided for Pyrenophora erythrospila. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agrostis, Hordeum and Triticum. DISEASE: Leaf spot of bent grass and red top. GEOGRAPHICAL DISTRIBUTION: Australia, Europe, New Zealand, North America. TRANSMISSION: By wind-borne conidia.

Entyloma serotinum. [Descriptions of Fungi and Bacteria].

1988 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Infected Plant ◽  
Growing Season ◽  
Republic Of Georgia ◽  
Borago Officinalis ◽  
Plant Remains ◽  
Water Splash

Abstract A description is provided for Entyloma serotinum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Symphytum spp., including S. asperrimum, S. bulbosum, S. cordatum, S. officinale, S. ottomanum and S. tuberosum; Borago officinalis; also recorded on Amsinckia, Lappula and Mertensia spp. (in USA) and Pulmonaria (in Europe, but see 64, 4163). DISEASE: Leaf spot of Symphylum, less frequently (though with similar symptoms) of other members of the Boraginaceae.GEOGRAPHICAL DISTRIBUTION: Africa: Algeria. Asia: Israel, USSR (Republic of Georgia). Australasia: New Zealand. Europe: widespread, including Austria, British Isles, Czechoslovakia, Denmark, France (including Corsica), Germany, Hungary, Italy, Netherlands, Poland, Portugal, Romania, Spain, Switzerland, USSR (Latvia), Yugoslavia. North America: USA. TRANSMISSION: Ustilospores survive on infected plant remains and in soil, and germinate to infect seedlings and the new seasons's leaves. In Europe conidia may also over-winter and initiate new infections in spring (Kaiser, 1936). During the growing season, conidia are disseminated by air currents and water-splash.

Entyloma calendulae. [Descriptions of Fungi and Bacteria].

1984 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
New Zealand ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
New South ◽  
Infected Plant ◽  
South Wales ◽  
Plant Remains ◽  
New Crop

Abstract A description is provided for Entyloma calendulae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Calendula officinarum, also C. aegyptiaca, C. algeriensis, C. arvensis, C. persica. DISEASE: Leaf spot of Calendula. GEOGRAPHICAL DISTRIBUTION: Widely distributed in Europe including Scandinavia and USSR (Latvia); around the Mediterranean (Algeria, Israel, Tunisia, Turkey); North America (USA), South America (Argentina, Chile, Uruguay); Australia (New South Wales, Western Australia), New Zealand. TRANSMISSION: Ustilospores survive on infected plant remains in soil and germinate to infect the new crop. Overwintering on self-sown seedlings is also possible.

Entyloma calendulae f. dahliae. [Descriptions of Fungi and Bacteria].

1984 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
New Zealand ◽  
North America ◽  
South America ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Indies ◽  
Growing Season ◽  
Plant Debris ◽  
Long Period

Abstract A description is provided for Entyloma calendulae f. dahliae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Dahlia variabilis, D. coccinia, D. pinnata; cultivated dahlia. DISEASE: Leaf spot of Dahlia. GEOGRAPHICAL DISTRIBUTION: Widely distributed in Europe including Finland and Sweden; Africa; North America (USA); Central and South America and West Indies (Argentina, Brazil, Colombia, El Salvador, Guatemala, Jamaica, Venezuela); Asia (Burma, India, Indonesia, Israel, Japan, Malaysia, Nepal, Pakistan, Sri Lanka, Papua New Guinea); Australia and New Zealand. CMI Map 114, ed. 4, 1983. TRANSMISSION: Soil-borne. Overwinters as ustilospores buried in plant debris; not transmitted by seed or in tubers, although spread by soil attached to tubers is possible (6, 97; 17, 655; 41, 603; 49, 1050); mature ustilospores are capable of remaining viable for a long period when dry (16, 304). Conidia contribute to dissemination during the growing season (49, 1050).

Cladosporium echinulatum. [Descriptions of Fungi and Bacteria].

1988 ◽  
Author(s):  
J. C. David
Keyword(s):  
South Africa ◽  
New York ◽  
British Columbia ◽  
New Zealand ◽  
North America ◽  
South America ◽  
El Salvador ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Germany

Abstract A description is provided for Cladosporium echinulatum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Dianthus spp., occasionally also on other similar members of the Caryophyllaceae, such as Lychnis and Saponaria. DISEASE: Leaf spot of carnation. GEOGRAPHICAL DISTRIBUTION: Africa: Kenya, Morocco, South Africa, Uganda. Asia: Cyprus, India, Iran, Japan Turkey. Australasia: New Zealand. Europe: Austria, Belgium, Bulgaria, Czechoslovakia, England, Finland, Italy, Iceland, Norway, Romania, Spain, Sweden, Switzerland, West Germany, Yugoslavia. North America: Canada (British Columbia), El Salvador, Mexico, USA (California, Florida, Massachusetts, New York, Oregon, Texas). South America: Argentina, Brazil, Chile, Columbia, Peru. TRANSMISSION: Conidia are dispersed by wind or rain, spreading from leaf to leaf, or to new plants.

Ramularia rubella. [Descriptions of Fungi and Bacteria].

1986 ◽  
Author(s):  
S. Wilson
Keyword(s):  
New Zealand ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Wind Dispersal ◽  
Rumex Acetosa

Abstract A description is provided for Ramularia rubella. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Rumex acetosa, R. aquaticus, R. brownii, R. conglomeratus, R. crispus, R. hymenosepalus, R. longifolius, R. nepalensis, R. obtusifolius, R. pulcher, R. stenophyllus. DISEASE: Leaf spot of Rumex spp. Symptoms occur more frequently on older leaves. Spots are apparent on both sides of leaf. Lesions are irregular, frequently angular or circular, brown with a buff centre often having a dark brown or purple border, sometimes coalescent. Size varies from 1-15 mm (mostly 7 mm) diam. Sporulation begins at centre of lesion, conidia in profusion will give a frosted appearance to spots. GEOGRAPHICAL DISTRIBUTION: North America: USA (Arizona, California, Colorado, Ohio, Washington, Wisconsin); South America: Brazil; Europe: Eire, England, Germany, Romania, Sweden, USSR; Africa: Libya; Asia: India, Iraq; Australasia: Australia (Queensland, Tasmania, Victoria), New Zealand. TRANSMISSION: Probably wind dispersal by air-borne spores.

Ascochyta avenae. [Descriptions of Fungi and Bacteria].

1982 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
New Zealand ◽  
Hordeum Vulgare ◽  
North America ◽  
Geographical Distribution ◽  
Perennial Ryegrass ◽  
Leaf Spot ◽  
Crop Residues ◽  
Wild Oat

Abstract A description is provided for Ascochyta avenae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Avena byzantina (Red or Algerian oat), A. fatua (Spring wild oat), A. sativa (common oat), A. mortoniana, Hordeum vulgare (barley), Loliumperenne (perennial ryegrass) and Triticum (wheat). DISEASE: Leaf spot or blotch of oats. At first lesions start as small purplish or chocolate-brown spots with a distinct margin. With time they enlarge, become elongated, grey brown and finally straw coloured. GEOGRAPHICAL DISTRIBUTION: Australasia & Oceania (New Zealand); Europe (Austria, Czechoslovakia, Germany, UK); North America (Canada, USA, Colorado, Oregon, Washington). TRANSMISSION: No specific studies reported. Presumably spread by air-borne conidia and those carried over in crop residues.

Pyrenophora dictyoides. [Descriptions of Fungi and Bacteria].

1976 ◽  
Author(s):  
M. B. Ellis
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Leaf Blade ◽  
Seed Transmission ◽  
Festuca Pratensis ◽  
Net Blotch ◽  
Meadow Fescue ◽  
Brown Leaf

Abstract A description is provided for Pyrenophora dictyoides. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Festuca, Lolium, Phleum, Poa. DISEASE: Causes net blotch and leaf spot primarily of fescues. Irregular brown leaf lesions with a delicate netted pattern are formed which may result in the withering of the whole leaf blade. Common on meadow fescue (Festuca pratensis) causing net-blotch lesions and occasionally found on Lolium and other grasses. GEOGRAPHICAL DISTRIBUTION: North America, Europe, Australia and New Zealand. TRANSMISSION: By spores, overwintering on leaf bases, crop debris, etc., and by seed transmission (50, 3873).

Phomopsis obscurans. [Descriptions of Fungi and Bacteria].

1970 ◽  
Author(s):  
B. C. Sutton
Keyword(s):  
New Zealand ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Primary Infection ◽  
Central Portion ◽  
Leaf Scorch ◽  
Fragaria Chiloensis ◽  
Mycosphaerella Fragariae

Abstract A description is provided for Phomopsis obscurans. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Fragaria chiloensis, Fragaria chiloensis var. ananassa, F. vesca, F. virginiana. DISEASE: Leaf blight of strawberry. Forming reddish-purple, almost circular lesions on older leaves and calyces which become elliptical or V-shaped when formed along veins, with the central portion drying out and turning brown. Delayed development of symptoms may lead to difficulties in distinguishing lesions in the field from those of leaf spot (Mycosphaerella fragariae (Tul.) Lind.) and leaf scorch (Diplocarpon earliana (Ellis & Everh.) Wolf). GEOGRAPHICAL DISTRIBUTION: Africa (Malawi, Mauritius, Rhodesia, Tanzania, Zambia); Asia (India, Nepal, Pakistan, U.S.S.R.); Australasia & Oceania (Australia, New Zealand, Tonga); North America (Canada, U.S.A.); South America (Argentina). TRANSMISSION: The pathogen overwinters as viable pycnidia in lesions on the old leaves which remain attached to the plant. Primary infection may occur early in the season by rain-splashed conidia.

Drechslera dematioidea. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
South Africa ◽  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
America South

Abstract A description is provided for Drechslera dematioidea. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agrostis, Anthoxanthum, Avena, Cynodon, Dactylis, Eragrostis, Festuca, Hordeum, Lolium, Paspalum, Phleum and Triticum. Also isolated from Iris, Leucospermum, Pinus and Pseudotsuga. DISEASE: Leaf spot of grasses and blight of pincushions. GEOGRAPHICAL DISTRIBUTION: Australia, Europe, New Zealand, North America, South Africa (26, 172; 34, 324, 711; 55, 2077; 65, 4975; 66, 1395). TRANSMISSION: By wind-borne conidia, seed-borne.

Pseudocercospora atromarginalis. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
M. A. J. Williams
Keyword(s):  
Hong Kong ◽  
New Zealand ◽  
Sri Lanka ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Solanum Nigrum ◽  
Rain Splash

Abstract A description is provided for Pseudocercospora atromarginalis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Solanum nigrum; also S. aethiopicum and S. nodiflorum. DISEASE: Leaf spot. GEOGRAPHICAL DISTRIBUTION: Africa: Ethiopia, Kenya, Libya, Malawi, Mauritius, Senegal, Sudan, Uganda, Zambia; Asia: Burma, Hong Kong, India, Japan, Pakistan, Sri Lanka; Australasia and Oceania: Fiji, New Zealand; North America: Barbados, Cuba, Jamaica, Trinidad. TRANSMISSION: Presumably by air-borne or rain-splash dispersed conidia.

Sign in / Sign up

Export Citation Format

Share Document