Septoria carthami. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Siberia ◽  
Carthamus Tinctorius ◽  
Early Symptoms ◽  
White Leaf ◽  
Water Splash

Abstract A description is provided for Septoria carthami. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Carthamus tinctorius and C. mareoticus. DISEASE: White leaf spot of safflower. Early symptoms appear as small distinct brownish lesions which enlarge and become circular or irregular and up to 6 mm wide. As the disease progresses lesions sometimes coalesce to form large blotches. Older lesions are usually bordered by dark brick margins with ash grey centres. GEOGRAPHICAL DISTRIBUTION: Africa (Egypt); Asia (Iraq, Turkey, USSR, West Siberia); Europe (Bulgaria, Rumania); North America (USA, Indiana, Texas). TRANSMISSION: It has been claimed that the fungus was introduced into West Siberia with infected seeds (14, 493-494). Also the fungus is probably disseminated by water-splash or by mechanical means.

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.

Septoria cannabis. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Crop Residues ◽  
New Records ◽  
Cannabis Sativa ◽  
Leaf Blight ◽  
White Leaf ◽  
Rain Splash

Abstract A description is provided for Septoria cannabis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Cannabis sativa (hemp). DISEASE: White leaf spot or leaf blight of hemp. Symptoms usually appear on basal leaves as round or ellipsoidal to polygonal, whitish or ochraceous yellow lesions with a conspicuous dark brown border. Affected leaves become curled and withered up towards the edges and fall prematurely leaving much of the lower part of the stem defoliated (15, 97, 805). GEOGRAPHICAL DISTRIBUTION: Asia, Europe and North America (CMI Map No. 477, ed. 1, 1971). New records not mapped are: Asia (Kashmir, Pakistan). TRANSMISSION: Detailed studies have not been reported but conidia are presumed to be disseminated by rain-splash and wind blown water. The fungus could also be carried over in crop residues.

Phaeoseptoria vermiformis. [Descriptions of Fungi and Bacteria].

1985 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
North America ◽  
East Africa ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Native Grasses ◽  
Natural Conditions ◽  
Water Splash ◽  
Wet Weather

Abstract A description is provided for Phaeoseptoria vermiformis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Triticale (Triticum × Secale), Avena (oats) and Triticum (wheat). DISEASE: Leaf spot of Triticale, wheat and oats. Lesions on leaves are irregular to elliptical, light brown to straw yellow. As infection progresses lesions enlarge to form blotches extending to the margins of leaves. GEOGRAPHICAL DISTRIBUTION: East Africa and North America (Mexico, Patzcuaro). TRANSMISSION: Presumably by conidia dispersed by water splash in wet weather or heavy dews. So far the mode of infection under natural conditions and the spread of the disease have not been investigated. It has been suggested that P. vermiformis might persist on native grasses in the field and this could serve as a source of inoculum in addition to the infected stubble or debris left over from previous years crop.

Septoria humuli. [Descriptions of Fungi and Bacteria].

1985 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
New Hampshire ◽  
Leaf Spot ◽  
Humulus Lupulus ◽  
Water Splash ◽  
Hot Weather

Abstract A description is provided for Septoria humuli. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Humulus lupulus (hop). DISEASE: Leaf spot of hop leading to premature defoliation. The disease has been reported initially to be confined to older and lower leaves and subsequently spreading to younger and upper leaves (Putto, Koul & Saraf, 1975). Female plants have been reported as being more susceptible than male plants. The visible symptoms are minute circular or irregular lesions, 1-3 mm wide and prominent on both surfaces of the leaves. With the progress of infection these lesions enlarge to form well defined spots, up to 6 mm wide, with ash white centres. Occasionally spots coalesce to form leaf blotches. Often severely infected leaves are killed and one report claims leaves on vines up to a height of 2-3 m have been affected (5, 1985). GEOGRAPHICAL DISTRIBUTION: Asia (India, Himachal Padesh, Kashmir); Europe (Czechoslovakia, Belgium, France, Germany, Hungary, USSR); North America (USA, Kansas, New Hampshire). TRANSMISSION: No specific studies reported. Presumably by conidia disseminated by water splash during hot weather.

Mycosphaerella convallariae. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Eastern North America ◽  
Disease Symptoms ◽  
Water Splash ◽  
Necrotic Spots ◽  
Convallaria Majalis

Abstract A description is provided for Mycosphaerella convallariae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Convallaria majalis (lily of the valley). DISEASE: Leaf spot or blotch or blight of lily of the valley. The first disease symptoms appear a few days after rain or a wet period (McKeen & Zimmer, 1964). At first the visible symptoms are minute necrotic spots with halos which later enlarge rapidly to form oblong to circular spots or blotches with concentric layers of light and dark zones. When the infection is severe secondary lesions develop, coalesce and kill the leaf. GEOGRAPHICAL DISTRIBUTION: Europe (Austria, Hungary, Italy, Romania, U.S.S.R.); Eastern North America (Canada, Ontario; U.S.A., Pennsylvania). TRANSMISSION: Conidia are dispersed by water splash. In Ontario, Canada, the fungus is reported to overwinter in the ascomatal state and ascospores are released following a wet period in May or June (McKeen & Zimmer, 1964). It has also been suggested that two to four cycles of the Ascochyta stage are completed in the summer.

Septoria sisymbrii. [Descriptions of Fungi and Bacteria].

2004 ◽  
Author(s):  
T. V. Andrianova
Keyword(s):  
Czech Republic ◽  
Great Britain ◽  
North America ◽  
South America ◽  
Central America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Far East ◽  
West Siberia ◽  
Republic Of Georgia

Abstract A description is provided for Septoria sisymbrii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot, leaf spot of watercress (ANON., 1984), drying of the leaves. HOSTS: Dentaria laciniata, Descurainia incisa, D. richardsonii subsp. incisa, Nasturtium microphyllum, N. officinale, Sisymbrium altissimum, S. columnae, S. irio, S. junceum, S. loeselii, S. officinale, S. orientale, S. polymorphum, S. septulatum, S. sinapistrum, S. strictissimum (Brassicaceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: USA. CENTRAL AMERICA: Cuba. SOUTH AMERICA: Venezuela. ASIA: Armenia, Republic of Georgia [http://www.cybertruffle.org.uk/gruzmaps/index.htm], India, Iran, Kazakhstan, Kirgizstan, Russia (West Siberia, Far East), Tadjikistan, Turkmenistan, Uzbekistan. EUROPE: Austria, Bulgaria, Czech Republic, Estonia, Germany, Great Britain, Latvia, Lithuania, Moldova, Poland, Portugal, Romania, Russia, Serbia, former Yugoslavia. TRANSMISSION: Not reported, but almost certainly by airborne or splash-dispersed conidia.

Cercospora circumscissa. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Fruit Trees ◽  
Stone Fruit ◽  
Prunus Amygdalus ◽  
Adverse Conditions ◽  
Leaf Spots ◽  
Water Splash

Abstract A description is provided for Cercospora circumscissa. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Prunus amygdalus, P. avium, P. cerasus, P. domestica, P. persica, P. spinosa. DISEASE: Leaf spot or 'shot hole' of stone fruit trees. The disease first appears early in the season on the younger leaves as yellowish spots with dark centres. The margin of the spots then becomes thickened and dark or reddish-brown, while the centre becomes grey, dries, shrinks and ultimately falls out. Eventually most of the leaves on the tree become riddled with holes. Shallow circular leaf spots may also form on the branches and the fruit (McAlpine, 1902). GEOGRAPHICAL DISTRIBUTION: Africa: Morocco, Zimbabwe; Asia: Cyprus, India, Iran, Israel, Japan, Palestine, Australasia: Australia (Queensland), Europe: Britain, France, Germany, Italy, Romania Turkey, USSR (Russia), Yugoslavia; North America: USA (Alabama, California, Florida); South America: Argentina. TRANSMISSION: By wind-borne and water splash-dispersed conidia (McAlpine, 1902). The fungus survives adverse conditions in the fallen foliage as stromatic cells or as the teleomorph.

Puccinia carthami. [Distribution map].

1977 ◽  
Author(s):  
Keyword(s):  
Saudi Arabia ◽  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Black Sea ◽  
Carthamus Tinctorius ◽  
Volga Region ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Puccinia carthami Corda. Hosts: Safflower (Carthamus tinctorius) and other C. spp. Information is given on the geographical distribution in AFRICA, Egypt, Ethiopia, Kenya, Morocco, Sudan, ASIA, Afghanistan, China (Kansu), India (Bihar, Delhi, Punjab), Iran, Iraq, Israel, Japan, Lebanon, Pakistan, Saudi Arabia, Syria, Turkey, USSR (Armenia, Azerbaijan, Turkmen SSR, Uzbek SSR, AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Cyprus, Czechoslovakia, France, Germany, Greece, Italy, Malta, Poland, Portugal, Romania, Spain, USSR (Black Sea, Volga Region), NORTH AMERICA, Canada, Mexico, USA.

Septoria lactucae. [Descriptions of Fungi and Bacteria].

1972 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Seed Coat ◽  
Lactuca Sativa ◽  
Leaf Spot ◽  
Early Symptoms ◽  
Leaf Surfaces ◽  
A Minor

Abstract A description is provided for Septoria lactucae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Lactuca sativa. DISEASE: A minor leaf spot of lettuce (Lactuca sativa). Early symptoms are small, numerous, irregularly outlined, chlorotic spots beginning on the outer leaves. They enlarge, becoming brown or somewhat silvery, sometimes with a chlorotic halo, and shot-holes develop. Pycnidia, which may not be conspicuous, are found on both leaf surfaces. Infection spreads to the younger leaves and flowers in severe attacks (20: 193; 21: 182). GEOGRAPHICAL DISTRIBUTION: Widespread (CMI Map 485, ed. 1, 1972). TRANSMISSION: By seed, pycnidia can be found embedded in the seed coat (41: 267).

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.

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