Cercospora duddiae. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
West Indies ◽  
Leaf Surface ◽  
Narrow Band ◽  
Necrotic Tissue ◽  
Leaf Base ◽  
Leaf Spots ◽  
Water Splash

Abstract A description is provided for Cercospora duddiae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Allium ascalonicum, A. cepa, A. fistulosum, A porrum, A. sativum. DISEASE: Leaf spot or withertip on onion and garlic. The symptoms vary on the different host species. On onion circular, chlorotic spots 3-5 mm diam. form mainly on the tip of the leaf, gradually decreasing in number towards the leaf base. The lesions at the leaf tip coalesce, forming a dry greyish-brown area, and in severe cases the entire leaf tip may be killed. The base of the leaf is mottled with brown necrotic leaf spots. Eventually the necrotic tissue may spread down the leaf surface, delimited by a narrow band (3 mm) of chlorotic tissue (Welles, 1923). Rarely does the disease cause much damage (Chupp & Sherf, 1960). GEOGRAPHICAL DISTRIBUTION: Africa: Mauritius, Nigeria, Sierra Leone, Somalia, Uganda; Asia: Borneo, Brunei, Burma, India, Indonesia, Oman, The Yemen; Australasia: Papua New Guinea; North America: West Indies (Barbados, Jamaica). TRANSMISSION: By air-borne or water-splash dispersed conidia, and by transportation with onion parts. The fungus is also reported to be seed borne (Chupp & Sherf, 1960).

Cercospora malayensis. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
Sierra Leone ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Indies ◽  
Leaf Surface ◽  
Euphorbia Pulcherrima ◽  
Leaf Spots ◽  
Brown Leaf Spot ◽  
Brown Leaf ◽  
Rain Splash

Abstract A description is provided for Cercospora malayensis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Hibiscus abelmoschus (musk mallow), H. cannabinus (deccan hemp), H. esculentus (okra), H. fisculatus, H. mutabilis, H. sabdariffa, H. suranensis, Euphorbia pulcherrima, Sphaeralcea cisplaniina. DISEASE: Leaf spot or brown leaf spot of Hibiscus spp. The first symptoms are yellowish patches on the leaf surface. These then become necrotic and gradually expand into irregular greyish brown leaf spots with dark brown to purple borders, surrounded by a pale yellow halo. Ultimately the necrotic areas become shrivelled and crack (30, 445). GEOGRAPHICAL DISTRIBUTION: The fungus is found wherever Hibiscus is cultivated (Chupp & Sherf, 1960). Africa: Ethiopia, Ghana, Mauritius, Sierra Leone, South Africa, Sudan, Tanzania, Uganda, Zimbabwe; Asia: Borneo, India, Indonesia, Japan, Malaysia, Philippines; Australasia: Fiji, Papua New Guinea; North America: West Indies (Jamaica, Trinidad, Cuba); South America: Colombia, Venezuela. TRANSMISSION: Presumably by wind-borne and rain-splash dispersed conidia.

Cochliobolus pallescens. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Hong Kong ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Solomon Islands ◽  
Ear Rot ◽  
Black Point ◽  
Leaf Spots ◽  
Windward Islands

Abstract A description is provided for Cochliobolus pallescens. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Common on many graminicolous and non-graminicolous hosts. Important cereals and grasses include Eleusine, Hordeum, Oryza, Panicum, Paspalum, Pennisetum, Poa, Saccharum, Setaria, Sorghum, Triticum and Zea economically important dicot hosts include Allium (59, 4867), Arachis (53, 1647), Brassica (66, 3075), Canna, Calendula, Calotropis (44, 1832; 66, 3587), Carica (61, 5129), Cinnamomum, Citrus (68, 843), Coriandrum, Dahlia, Fagopyrum (64, 2425), Gaillardia, Hevea (56, 1257; 67, 5560), Musa (54, 4051), Solanum (50, 3484). DISEASE: Leaf spots of cereals, black point of wheat (44, 102), leaf spot and on stems of rubber (56, 1257; 67, 5560), ear rot of barley (62, 1005), rot of garlic (59, 4867). GEOGRAPHICAL DISTRIBUTION: Australia, Bangladesh, Brunei, Burma, Canada, Colombia, Cuba, Denmark, Egypt, Ethiopia, Fiji, Ghana, Guinea, Hong Kong, India, Indonesia, Iran, Jamaica, Japan, Kenya, Malaysia, Malawi, Nepal, Nigeria, Pakistan, Papua New Guinea, Peru, Philippines, Sierra Leone, Singapore, Solomon Islands, Somalia, Sri Lanka, Swaziland, Sudan, Taiwan, Tanzania, Thailand, Trinidad, USA, USSR, Venezuela, Windward Islands, Zambia, Zimbabwe. TRANSMISSION: By wind-borne conidia and seed-borne.

Cochliobolus eragrostidis. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Puerto Rico ◽  
Hong Kong ◽  
New Zealand ◽  
Sri Lanka ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Solomon Islands ◽  
New Guinea ◽  
Leaf Spots

Abstract A description is provided for Cochliobolus eragrostidis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Acacia, Agave, Allium, Alysicarpus, Amorphophallus, Anacardium, Arachis, Areca, Billbergia, Calamus, Callitris, Calotropis, Camellia, Cananga, Capsicum, Citrullus, Citrus, Clerodendron, Cocos, Coffea, Colocasia, Cymbopogon, Dendrobium, Digitaria, Dioscorea, Dracaena, Durio, Elaeis, Eragrostis, Eucalyptus, Euphorbia, Furcraea, Gladiolus, Glycine, Gossypium, Heliconia, Hevea, Hystrix, Ipomoea, Kaempferia, Lycopersicon, Mangifera, Manihot, Mystroxylon, Musa, Neyraudia, Oldenlandia, Opuntia, Oryza, Panicum, Pennisetum, Pentas, Phalaenopsis, Phaseolus, Pinus, Polygala, Pueraria, Raphia, Raphanus, Rhodomyrtus, Rhoeo, Rottboellia, Saccharum, Sesamum, Sorghum, Spinacia, Sporobolus, Stylosanthes, Theobroma, Thrasya, Tradescantia, Trichosanthes, Triplochiton, Triticum, Vanda, Vigna, Zea, Zingiber and soil. DISEASE: Leaf spots. GEOGRAPHICAL DISTRIBUTION: Australia, Bangladesh, Belize, Brazil, Brunei, Burma, Colombia, Cuba, Fiji, Ghana, Guinea, Honduras, Hong Kong, India, Indonesia, Japan, Kenya, Kuwait, Malaysia, New Zealand, Nigeria, Papua New Guinea, Puerto Rico, Sierra Leone, Singapore, Solomon Islands, Sri Lanka, Trinidad, USA, Zambia, Zaire. TRANSMISSION: By wind-borne conidia.

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.

Nigrospora sphaerica. [Descriptions of Fungi and Bacteria].

1991 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
South Africa ◽  
New Zealand ◽  
Central America ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
West Indies ◽  
Peninsular Malaysia ◽  
Plant Debris ◽  
Windward Islands

Abstract A description is provided for Nigrospora sphaerica. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Abelmoschus, Acacia, Acropera, Album, Ananas, Anthurium, Amaranthus, Andropogon, Arachis, Aralia, Araucaria, Areca, Argemone, Artocarpus, Arundinaria, Asparagus, Axonopus, Bambusa, Banhinia, Bridelia, Brassica, Cajanus, Calamus, Calotropis, Camellia, Capsicum, Cardamomum, Carex, Carica, Coriandrum, Cenchrus, Centrosema, Chasmopodium, Chloris, Cicer, Cinnamomum, Citrullus, Citrus, Cocos, Coffea, Coix, Cola, Colea, Coriandrum, Crotalaria, Cucumis, Culcasia, Cupressus, Cymbopogon, Cyperus, Dianthus, Dichanthium, Dioscorea, Elaeis, Emblica, Erianthus, Eriobotrya, Eucalyptus, Euphorbia, Feronia, Ficus, Fragaria, Gladiolus, Glycine, Gomphrena, Gossypium, Hevea, Hibiscus, Hordeum, Hydrangea, Hymantrudae, Hyparrhenia, Ipomoea, Jatropha, Lactuca, Luffa, Lycopersicon, Macadamia, Mormodica, Morus, Lathyrus, Malus, Mangifera, Musa, Nicotiana, Neomarica, Nephelium, Nothofagus, Oncidium, Ophiuros, Oryza, Oxytenanthera, Panicum, Papaver, Pelargonium, Pennisetum, Pueraria, Phalaenopsis, Phaseolus, Phragmites, Physalis, Pinus, Piper, Pistia, Populus, Prunus, Pseudotsuga, Psidium, Psophocarpus, Pyrethrum, Raphanus, Ricinus, Robinia, Rosa, Rottboellia, Saccharum, Salvia, Shorea, Solanum, Sorghum, Sporobolus, Sphenoclea, Stevia, Stigmaphyllon, Strychnos, Tabebuia, Tabemaemontana, Theobroma, Trichosanthes, Trigonella, Triticum, Vicia, Vitex, Xanthosoma, Zea, Zizyphus; also from air, animals (including man and Ceroplastus), soil and plant debris, and stored foods. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. Associated with 'squirter' and 'black end' disease of banana. GEOGRAPHICAL DISTRIBUTION: AFRICA: Cameroon, Egypt, Ethiopia, Ghana, Guinea, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Seychelles, Sierra Leone, South Africa, Spain (Canary Islands), Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe. ASIA: Bangladesh, Brunei, Burma, Hong Kong, India, Indonesia, Iraq, Nepal, Pakistan, Malaysia (Peninsular Malaysia, Sabah), Philippines, Sarawak, Sri Lanka, Syria. AUSTRALASIA & OCEANIA: Australia, Fiji, Guadalcanal, New Zealand, Norfolk Islands, Papua New Guinea, Tonga. EUROPE: Italy, Turkey, UK. NORTH AMERICA: Canada, USA. CENTRAL AMERICA & WEST INDIES: Cuba, Honduras, Jamaica, Trinidad, Windward Islands. SOUTH AMERICA: Argentina, Bolivia, Brazil, Chile, Peru, Venezuela. TRANSMISSION: By unknown means.

Apiospora montagnei. [Descriptions of Fungi and Bacteria].

1991 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
New Zealand ◽  
Central America ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
West Indies ◽  
Solomon Islands ◽  
Peninsular Malaysia ◽  
Plant Debris ◽  
Windward Islands

Abstract A description is provided for Apiospora montagnei. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Acer, Agropyron, Ammophila, Andropogon, Arachis, Areca, Aristida, Arundinaria, Bambusa, Brassica, Capsicum, Carex, Chrysanthemum, Cicer, Cinnamomum, Coffea, Colocasia, Coriandrum, Cortaderia, Cucumis, Cupressus, Cynodon, Cyperus, Dactylis, Dendrocalamus, Desmostachya, Deschampsia, Dioscorea, Dolichos, Donax, Elaeis, Elymus, Eucalyptus, Eugenia, Fagus, Ficus, Fragaria, Fraxinus, Gossypium, Hippocratea, Holcus, Hordeum, Hyparrhenia, Ilex, Lactuca, Lens, Leucaena, Lycopersicon, Malus, Manihot, Musa, Myrica, Nectandra, Nicotiana, Ochlandra, Oryza, Oxytenanthera, Phalaris, Phenacoccus, Phragmites, Pinus, Pisum, Prunus, Psamma, Pseudotsuga, Pyrus, Ricinus, Rottboellia, Saccharum, Sambucus, Sesamum, Solanum, Sorindeia, Spartinia, Spiraea, Stylosanthes, Themeda, Theobroma, Triticum, Urtica, Vigna, Vitis, Zea; also from air, animals, hay, food (bread, dried peas), molasses, soil and plant debris. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Gambia, Ghana, Kenya, Malawi, Mauritius, Namibia, Nigeria, Portugal (Azores), Sierra Leone, Tanzania, Togo, Uganda, Zambia, Zimbabwe. ASIA: Burma, China, Hong Kong, India, Indonesia, Japan, Nepal, Pakistan, Papua New Guinea, Malaysia (Peninsular Malaysia, Sabah), Philippines, Sri Lanka, Thailand. AUSTRALASIA & OCEANIA: Australia, Fiji, New Zealand, Solomon Islands, USA (Hawaii). EUROPE: Belgium, Cyprus, Czechoslovakia, Eire, France, Germany, Greece, Italy, Netherlands, Portugal, Rumania, Spain, Sweden, Turkey, UK, USSR. NORTH AMERICA: Canada, USA. CENTRAL AMERICA & WEST INDIES: Cuba, Jamaica, Windward Islands. SOUTH AMERICA: Argentina, Venezuela. TRANSMISSION: By unknown means.

Pithomyces sacchari. [Descriptions of Fungi and Bacteria].

1991 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
South Africa ◽  
Central America ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
West Indies ◽  
New Caledonia ◽  
Peninsular Malaysia ◽  
Plant Debris ◽  
Stored Grain

Abstract A description is provided for Pithomyces sacchari. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Abrus, Anacardium, Ananas, Andropogon, Areca, Aristida, Arundinella, Borassus, Cajanus, Camellia, Canavalia, Casuarina, Citrus, Coffea, Coix, Cycas, Cynodon, Dioscorea, Elaeis, Eucalyptus, Gladiolus, Imperata, Lolium, Lucerne, Medicago, Musa, Nicotiana, Ophiuros, Oryza, Peltophorum, Rhus, Saccharum, Sesamum, Sorghum, Themeda, Triticum, Vigna, Withania, Zea; also from air, food (milk, stored grain), soil and plant debris, textiles, and wood. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Egypt, Ghana, Guinea, Kenya, Malawi, Mauritius, Sierra Leone, South Africa, Sudan, Tanzania, Uganda, Zambia, Zimbabwe. ASIA: Hong Kong, India, Papua New Guinea, Malaysia (Peninsular Malaysia, Sabah), Philippines, Singapore, Sri Lanka. AUSTRALASIA & OCEANIA: Australia, Guadalcanal, New Caledonia, USA (Hawaii). NORTH AMERICA: USA. CENTRAL AMERICA & WEST INDIES: Jamaica, Trinidad. SOUTH AMERICA: Venezuela. TRANSMISSION: By unknown means.

Cercospora beticola. [Descriptions of Fungi and Bacteria].

1982 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
Wind Speed ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
West Indies ◽  
Cercospora Beticola ◽  
Wind Dispersal ◽  
Chenopodium Ambrosioides ◽  
East Indies ◽  
Spinacea Oleracea

Abstract A description is provided for Cercospora beticola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Beta ciclae, B. maritima (wild sea beet), B. putternulaei, B. trigyna, B. vulgaris (beet, sugar beet), Chenopodium ambrosioides (wormseed), C. beticola, C. murale, C. polyspermi, C. urbicum, Spinacea oleracea (spinach). DISEASE: Causing whitish, grey or pale brown spots usually surrounded by a narrow reddish-purple or brown border on living and wilting leaves. GEOGRAPHICAL DISTRIBUTION: Africa (Ethiopia, Kenya, Libya, Malawi, Mauritius, Nigeria, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe), Asia (Hong Kong, India, Malaya, Nepal, Pakistan), East Indies (Borneo, Papua New Guinea), Europe (Channel Isles, Cyprus, Czechoslovakia, England, France, Germany, Italy, Malta, Poland, Roumania, Switzerland), Middle East (Iran, Iraq, Israel, Jordan, Oman, Turkey), North America (USA), South America (Venezuela), West Indies (Antigua, Cuba, Jamaica). TRANSMISSION: Wind dispersal of conidia showed diurnal periodicity with a peak at 10.00 hrs. The increase in concentration of conidia above the crop coincided with an increase in wind speed and temperature and a decrease in RH. The largest number of conidia were trapped on warm dry days following rain or overnight dew (50, 362). Epiphytotics were proceeded by periods of 6h at more than 90% RH for 3-4 successive days and at a temperature of more than 12.5°C (55, 1205).

Mycosphaerella henningsii. [Descriptions of Fungi and Bacteria].

1987 ◽  
Author(s):  
S. Little
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Leaf Surface ◽  
Lower Leaf Surface ◽  
Leaf Spots ◽  
Brown Leaf Spot ◽  
Water Splash ◽  
Brown Leaf ◽  
Leaf Veins ◽  
Severe Infections

Abstract A description is provided for Mycosphaerella henningsii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Manihot esculenta (cassava, manioc), M. glaziovii (manicoba, ceara rubber), M. palmata and, under laboratory conditions, Ipomoea sp. (36: 82). DISEASE: Brown leaf spot, sometimes referred to as leaf blight of cassava. At first the lesions start as small circular greenish yellow spots. These enlarge and become angular as they are delimited by the major leaf veins; on the upper leaf surface the spots are tan to light tan, 1-8 mm diam. with a dark brown slightly raised border. Minor leaf veins crossing the leaf spot are seen as black necrotic lines. In severe infections the leaf spots are surrounded by a yellow halo caused by a toxin produced by the advancing mycelium (Teri et al., 1977). On the lower leaf surface the spots are less distinct. Eventually the lesions may coalesce, and cause premature defoliation. GEOGRAPHICAL DISTRIBUTION: Generally found wherever cassava is cultivated (Teri, 1977). Africa: most countries; Asia: Jordan, Philippines, Sri Lanka, Thailand; North America: Dominican Republic, USA (Florida); South America: Bolivia, Brazil, Colombia, Peru, Venezuela. TRANSMISSION: Probably by wind-borne and water-splash dispersed conidia. During the dry season the fungus survives on the crop debris.

Mycosphaerella caricae. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
South America ◽  
Central America ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Indies ◽  
Carica Papaya ◽  
Fruit Rot ◽  
Stem Rot ◽  
Water Splash

Abstract A description is provided for Mycosphaerella caricae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Carica papaya. DISEASE: Fruit rot, leaf spot and stem rot of pawpaw. GEOGRAPHICAL DISTRIBUTION: Africa: Ethiopia, Ghana, Kenya, Mauritius, Nigeria, Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe. Asia: Burma, India, Indonesia, Malaysia, Nepal, Philippines, Sri Lanka, Thailand. Australasia & Oceania: Australia, USA (Hawaii), Papua New Guinea, West Irian. Central America & West Indies: Cuba, Honduras, Mexico. South America: Bolivia, Brazil, Ecuador. TRANSMISSION: Presumably by windborne ascospores and conidia, by water splash and contact through natural wounds.

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