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.

Cercospora carbonacea. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
Puerto Rico ◽  
North America ◽  
South America ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Indies ◽  
Lower Surface ◽  
Leaf Spots ◽  
Rain Splash

Abstract A description is provided for Cercospora carbonacea. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Dioscoria spp. DISEASE: Leaf spot of yams. Causes fairly large, 5-20 mm, angular leaf spots, which are usually delimited by the leaf veins. The dark brown to almost black leaf spots give an almost charred appearance to the leaves, while on the lower surface the spots are grey becoming brown with age. GEOGRAPHICAL DISTRIBUTION: Africa: Ethiopia, Ghana, Guinea, Nigeria, Sierra Leone, Tanzania, Togo, Asia: Burma, India, North America: Canada (Ontario), West Indies (Barbados, Grenada, Jamaica, St. Vincent, Puerto Rico, Trinidad); South America: Venezuela. TRANSMISSION: Presumably by wind-borne and rain-splash dispersed conidia, surviving adverse periods in crop debris.

Cercospora gossypina. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
Puerto Rico ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Indies ◽  
Gossypium Arboreum ◽  
Adverse Conditions ◽  
Rain Splash

Abstract A description is provided for Cercospora gossypina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Gossypium arboreum, G. barbadense, G. herbaceum, G. hirsutum, G. indicum. DISEASE: Leaf spot of cotton. Causes circular to irregular spots, 0.5-15 mm diam., pale brown or grey with a dark brown or purple border, often zonate. Plants of all ages may be infected. GEOGRAPHICAL DISTRIBUTION: Africa: most countries; Asia: Bangladesh, Burma, India, Pakistan, The Yemen, Australasia: Australia (Queensland); North America: West Indies (Puerto Rico, Trinidad); South America: Peru, Uruguay. TRANSMISSION: Presumably by wind-borne and rain-splash dispersed conidia, and by contaminated tools. Survives adverse conditions in crop debris.

Leucostoma cinctum. [Descriptions of Fungi and Bacteria].

1998 ◽  
Author(s):  
V. P. Hayova
Keyword(s):  
Czech Republic ◽  
North America ◽  
Geographical Distribution ◽  
Host Response ◽  
Comparative Anatomy ◽  
Fruit Trees ◽  
Stone Fruit ◽  
Republic Of Georgia ◽  
Conidial State ◽  
Fruit Orchards

Abstract A description is provided for Leucostoma cinctum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leucostoma cinctum, especially in its conidial state, is a well-known pathogen of stone-fruit trees causing necrosis of twigs, perennial Cytospora-canker. The fungus penetrates mainly through the scars, and may result in dieback of branches or even whole trees. Tree susceptibility to L. cinctum is influenced by lesions (Stanova, 1990). Comparative anatomy and host response of peach cultivars inoculated with L. cinctum was studied by Biggs (1986). Resistance of different cultivars of stone-fruit trees to L cinctum has been investigated by many authors (Cociu et al., 1991; Miles et al., 1989; Pedryc & Rozsnyai, 1991). HOSTS: On dead or dying, attached or fallen twigs of the Rosaceae, mainly Prunoideae (Amygdalus, Armeniaca, Cerasus, Persica, Prunus) and rarely other subfamilies of the Rosaceae, including genera such as Cotoneaster, Crataegus, Malus and Pyrus. GEOGRAPHICAL DISTRIBUTION: Asia: Armenia, Republic of Georgia, Iran, Kazakhstan, Russia, Turkmenistan, Uzbekistan. Australasia: Australia. Europe: Czech Republic, France, Germany, Hungary, Italy, Moldova, Rumania, Russia, Slovakia, Spain, Switzerland, Sweden, Turkey, UK, Ukraine, former Yugoslavia. North America: Canada, USA (Idaho, Michigan, New-Jersey, Oregon). TRANSMISSION: Both conidia and ascospores are air-borne, especially under humid conditions. Orange or reddish droplets or tendrils of conidia extruded from conidiomata can be often seen after rain. It is also known that arthropods can carry propagules in stone-fruit orchards (Helton et al., 1988).

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.

Mycosphaerella populorum. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Distribution Map ◽  
Spot Disease ◽  
Mycosphaerella Populorum

Abstract A description is provided for Mycosphaerella populorum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Populus spp. DISEASE: Septoria canker, leaf spot disease. GEOGRAPHICAL DISTRIBUTION: North America: USA (east and central states). South America: Argentina (CMI Distribution Map 540, 1981). TRANSMISSION: By windborne conidia and ascospores.

Cercospora pappaea. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
South America ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
New Guinea ◽  
Leaf Spots ◽  
Fruit Decay

Abstract A description is provided for Cercospora pappaea. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Caricapappaea (pawpaw). DISEASE: Leaf spot of pawpaw. Leaf spots are circular at first, but become irregular with age, 3-10 mm diam., pale brown on the upper surface, indistinct on the lower. The fungus may also cause small shallow black dots on the fruit; these lesions may enlarge up to 3 mm, but do not cause fruit decay (Weber 1973). GEOGRAPHICAL DISTRIBUTION: Africa: Mauritius, Malawi, Sudan Uganda, Asia: Burma, India Indonesia, Nepal; Australasia and Oceania: Papua New Guinea, Tonga; South America: Venezuela.

Pseudocercospora timorensis. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
Sweet Potato ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Ipomoea Batatas ◽  
Leaf Surface ◽  
Solomon Islands ◽  
Leaf Spots ◽  
Brown Leaf Spot ◽  
Water Splash ◽  
Brown Leaf

Abstract A description is provided for Pseudocercospora timorensis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Ipomoea batatas (sweet potato), I. biloba, I. campanulata, I. cordofana, I. muricata, I. peltata, I. setifera.DISEASE: Leaf spot or brown leaf spot of sweet potato. Small circular lesions first form on the leaf borders and tips before spreading over the leaf surface. These leaf spots enlarge becoming brown to dark brown in colour with a verruculose surface. The larger leaf veins may delimit the spots. GEOGRAPHICAL DISTRIBUTION: Africa: most countries; Asia: Hong-Kong, India, Indonesia, Malaysia, Taiwan; Australasia: Fiji, Papua New Guinea, Solomon Islands; North America: West Indies (St Lucia). TRANSMISSION: Presumably by wind-borne and water-splash dispersed conidia.

Mycosphaerella aleuritis. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Hong Kong ◽  
North America ◽  
South America ◽  
Central America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Central African Republic ◽  
Angular Leaf Spot ◽  
Distribution Map ◽  
Rain Splash

Abstract A description is provided for Mycosphaerella aleuritis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Aleurites fordii, A. mollucana, A. montana. DISEASE: Angular leaf spot of tung. GEOGRAPHICAL DISTRIBUTION: Africa: Central African Republic, Malagasy Republic, Malawi, Zaire (probably also Cameroon, Chad, Congo, Gabon). Asia: China, Hong Kong, Japan, Korea, Malaysia, Taiwan. Central America & Caribbean: Cuba, Trinidad. North America: USA. South America: Argentina, Brazil, Paraguay? (CMI Distribution Map 278, ed. 3, 1975). TRANSMISSION: By ascospores and conidia, which are mainly dispersed by rain-splash and wind (45, 1989f).

Anarsia lineatella. [Distribution map].

1959 ◽  
Author(s):  
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Fruit Trees ◽  
Stone Fruit ◽  
Distribution Map ◽  
Anarsia Lineatella ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Anarsia lineatella Zell. (Lep., Tineidae) (Peach Twig Borer) Hosts: Stone-fruit trees, notably peach. Information is given on the geographical distribution in EUROPE (excl. USSR), Austria, Belgium, Bulgaria, Crete, France, Germany, Greece, Hungary, Italy, Malta, Poland, Spain, Sweden, Switzerland, Yugoslavia, ASIA (excl. USSR), China, Cyprus, Iraq, Israel, Kashmir, Lebanon, Pakistan, Persia, Syria, Turkey, USSR, AFRICA, Algeria, Egypt, Libya, Morocco, Tunisia, NORTH AMERICA, Canada, U.S.A.

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.

Sign in / Sign up

Export Citation Format

Share Document