Alternaria cucumerina. [Descriptions of Fungi and Bacteria].

Author(s):  
M. B. Ellis

Abstract A description is provided for Alternaria cucumerina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Citrullus lanatus, Cucumis melo, C. sativus, Cucurbita spp. DISEASE: Leaf spot of cucumber and melon (watermelon, musk melon, cantaloupe). Symptoms begin as yellow-brown flecks, 0.5 mm diam., on the upper surface of usually the crown leaves. They have a light green halo and gradually enlarge, becoming coalescent, with concentric ringing more commonly on the upper surface. Death of the leaves can be followed by lesions, several cm diam., forming on ripe fruit. These become covered with a dark, olive-green, conidial mass; they may be sunken and also show the concentric zonation. Infection of fruit in the field may be aggravated by exposure to sunlight (10: 431). Infection of stems or petioles does not occur. The pathogen can also cause decay in transit and storage, especially of melons and squash. GEOGRAPHICAL DISTRIBUTION: Arabia, Australia, Canada, Chile, Cuba, Cyprus, England, France, Japan, Kenya, Libya, Mozambique, New Zealand, Nigeria, Rhodesia, Rumania, Sierra Leone, South Africa, Sudan, Thailand, Trinidad, U.S.A., Venezuela, Zambia. TRANSMISSION: Seed may become contaminated with conidia. Survival from season to season is probably through mycelium in host debris. No air dispersal studies have been reported.

Author(s):  
J. L. Mulder

Abstract A description is provided for Puccinia cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecial stage on species of Plantago. Uredial and telial stages on species of Cynodon, particularly C. dactylon. DISEASE: Leaf rust of Bermuda grass (Cynodon dactylon). GEOGRAPHICAL DISTRIBUTION: Widespread. Africa: Ethiopia, Ghana, Kenya, Libya, Malawi, Mauritius Morocco, Nigeria, Sierra Leone, South Africa, Sudan, Tunisia and Zambia. Americas: Argentina, Barbados, Bermuda, Colombia, Dominica, Dominican Republic, Jamaica, Mexico, Nicaragua, Panama, Puerto Rieo, Salvador, Trinidad, USA (South) and Venezuela. Asia: Cambodia, Ceylon, China, India, Iraq, Pakistan, Turkey and USSR. Australasia & Oceania: Australia, Hawaii, New Caledonia, New Zealand and Papua & New Guinea. Europe: Cyprus, France, Malta and Rumania. TRANSMISSION: No studies appear to have been reported. Since the aecial stage has not been found in USA the urediospores presumably survive during the dormant periods of the tdial host.


Author(s):  
P. M. Kirk

Abstract A description is provided for Arthrinium phaeospermum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agropyron, Ammophila, Anona, Araucaria, Arundinaria, Arachis, Argemone, Arrhenatherum, Arundo, Bambusa, Brassica, Bromus, Calamagrostis, Carex, Cocos, Citrus, Cladium, Coelogyne, Coffea, Cortaderia, Cratueva, Dactylis, Dendrocalamus, Dioscorea, Eleusine, Elymus, Fagus, Fragaria, Glyceria, Gynerium, Hedera, Hordeum, Justicia, Lens, Liriope, Lycopersicon, Magnolia, Malus, Maranta, Musa, Nicotiana, Oryza, Panicum, Persea, Phalaris, Phaseolus, Pinus, Pisum, Phragmites, Phyllostachys, Picea, Pinus, Piper, Prunus, Psamma, Pteridium, Ranwolfia, Saccharum, Smilax, Solanum, Sorghum, Tectona, Theobroma, Trifolium, Triticum, Valeriana, Vigna, Vitis, Zea; also from air, animals (including man), soil and plant debris, straw, silage and wood. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader (of potato tubers) or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Algeria, Kenya, Malawi, Nigeria, Sierra Leone, South Africa Spain (Canary Islands), Sudan, Tanzania, Zambia, Zimbabwe. ASIA: Bangladesh, Bhutan, Hong Kong, India, Iraq, Japan, Nepal, Pakistan, Malaysia (Peninsular Malaysia), Philippines, Thailand. AUSTRALASIA & OCEANIA: Australia, Guadalcanal, New Zealand. EUROPE: Cyprus, Eire, Germany, Greece, Netherlands, Portugal, Spain, Sweden, Turkey, UK. NORTH AMERICA: Canada, USA. SOUTH AMERICA: Argentina. TRANSMISSION: By unknown means.


Author(s):  
P. M. Kirk

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.


Author(s):  
M. B. Ellis

Abstract A description is provided for Alternaria brassicicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Cruciferae, esp. cabbage and cauliflower. DISEASE: On leaves forming dark brown to almost black circular, zonate spots, 1-10 mm diam. More common and causing more severe disease than A. brassicae (CMI Descript. 162) in seed crops. White cabbage and cauliflower are subject to particularly severe attacks; Savoy cabbage is relatively free. May cause considerable damage to cabbage and cauliflower in transit. GEOGRAPHICAL DISTRIBUTION: Widespread and common N.W. Europe; found also in Australia, Burma, Canada, Ceylon, Cyprus, Ethiopia, Ghana, Great Britain, Guinea, Hong Kong, India, Jamaica, Japan, Libya, Malawi, Malaya, Mauritius, Nepal, Netherlands, New Guinea, New Zealand, Nigeria, Rhodesia, Rumania, Sabah, Sierra Leone, South Africa, Sudan, Tanzania, Turkey, Uganda, U.S.A., Zambia. TRANSMISSION: Seed-borne.


Author(s):  
G. C. Kinsey

Abstract A description is provided for Phoma terrestris. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Pink root of Allium spp., principally onion but also affecting leek, shallot, garlic and chive. Possibly also a soil-borne saprobe and opportunistically pathogenic on other plants. HOSTS: From roots of Allium spp. Many other hosts reported, including Agropyron, Agrostis, Andropogon, Apostasia, Arctostaphylos, Artemisia, Arthraxon, Asparagus, Avena, Bambusa, Bouteloua, Bromus, Calamovilfa, Cenchrus, Chrysothamnus, Citrus, Clermontia, Cordia, Cucumis, Cucurbita, Cymbopogon, Cynodon, Dactylis, Dioscorea, Distichlis, Echinochloa, Elymus, Eragrostis, Eucalyptus, Festuca, Fragaria, Gentiana, Glycine, Hebe, Holcus, Hordeum, Ipomoea, Juniperus, Kentia, Koeleria, Lepidium, Linum, Lycospersicon, Medicago, Melilotus, Muhlenbergia, Musa, Oryza, Oryzopsis, Panicum, Phaseolus, Phleum, Pinus, Piper, Pisum, Poa, Populus, Purshia, Ribes, Rumex, Saccharum, Salix, Salvinia, Schedonnardus, Setaria, Sitanion, Solanum, Sorghum, Spinacia, Stipa, Trifolium, Triticum, Verbascum, Vigna, Vulpia and Zea. Also from soil, air, plant debris, cysts of the beet (Beta) cyst-nematode Heterodera and nasal swab of horse (Equus). GEOGRAPHICAL DISTRIBUTION: Worldwide. Records on Allium spp. include AFRICA: Egypt, Senegal, Sierra Leone, South Africa, Sudan, Uganda. NORTH AMERICA: Canada, USA. SOUTH AMERICA: Argentina, Brazil, Venezuela. ASIA: Brunei, China (Hong Kong), Israel, Mauritius, Pakistan. AUSTRALASIA: Australia, New Zealand. EUROPE: Germany, Great Britain, Greece, Netherlands, Poland. TRANSMISSION: Soil-borne.


Author(s):  
E. Punithalingam

Abstract A description is provided for Pyrenochaeta terrestris. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Allium cepa; other species of Allium. DISEASE: Pink root of onion (Allium cepa), and also may cause disease in Welsh onion (A. fistulosum), leek (A. ampeloprasum), shallot (A. cepa var. aggregatum), garlic (A. sativum) and chive (A. schoenoprasum). Also, as a soil inhabitant, it is frequently isolated from the roots of many crops on which no disease is caused (20, 138; 22, 429; 23, 261; 25, 82; 33, 332; 45, 311; 47, 2119; 50, 136). GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Brazil, Canada, Egypt, Germany, Hong Kong, Mauritius, New Zealand, Pakistan, Sierra Leone, South Africa, Uganda, UK, USA, Venezuela. TRANSMISSION: Soil, water and the infected host.


Author(s):  
A. Sivanesan

Abstract A description is provided for Cochliobolus cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cynodon dactylon (very common on this host), other Cynodon spp., Agropyron, Ammi, Arecastrum, Axonopus, Calathea, Chamaedorea, Chrysalidocarpus, Dactyloctenium, Eleusine, Hordeum, Ipomoea, Lycopersicon, Muhlenbergia, Oryza, Panicum, Pennisetum, Poa, Rhapis, Secale and Zea. DISEASE: Leafspot of Bermuda grass end other crops, leaf blight end brown patches of turf, lawns end golflinks. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Bangladesh, Brazil, Brunei, Egypt, Ghana, Guinea, India, Israel, Iraq, Italy, Japan, Kenya, Malaysia, New Zealand, Pakistan, Papua New Guinea, Puerto Rico, Spain, South Africa, Sudan, Tanzania, Trinidad, Turkey, USA, USSR, Venezuela, Yugoslavia and Zambia. TRANSMISSION: By wind-borne conidia and seed-borne.


Author(s):  
J. N. Kapoor

Abstract A description is provided for Podosphaera leucotricha. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Malus spp., chiefly on M. pumila (apple), peach (Prunus persica), quince (Cydonia ualgaris) and Photinia spp. also attacked (Hirata, 1966). Also reported on almond fruit (43, 2544). DISEASE: Powdery mildew of apple. GEOGRAPHICAL DISTRIBUTION: Africa (? Kenya, Rhodaia, South Africa, Tanzania); Asia (China, India, Israel, Japan, U.S.S.R.); Australia and New Zealand, Europe (widely distributed) North America (Canada and U.S.A.); South America (Argentina, Brazil, Chile, Colombia, Peru). (CMI map 118). TRANSMISSION: Overwinters on host as dormant mycdium in blossom buds. The role of deistothecia in overwintering is doubtful. Spread by wind-borne conidia (Anderson, 1956).


Author(s):  

Abstract A new distribution map is provided for Pyrenophora avenae Ito & Kuribay. Hosts: Oats (Avena). Information is given on the geographical distribution in AFRICA, Angola, Egypt, Kenya, Malagasy Republic, Morocco, South Africa, ASIA, China (Kiangsu), India, Israel, Japan, Nepal, Pakistan, Taiwan, Turkey, USSR (Soviet Far East, Tashkent, Tomsk), AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Britain & Northern Ireland, Bulgaria, Cyprus, Denmark, Finland, France, Germany, Irish Republic, Italy, Netherlands, Norway, Romania, Sweden, USSR (Latvia) (Byelorussia), NORTH AMERICA, Canada (general), USA (general), SOUTH AMERICA, Argentina (Buenos Aires), Brazil, Colombia, Guatemala.


Author(s):  

Abstract A new distribution map is provided for Ceroplastes destructor Newst. (Homopt., Coccoidea) (White Wax Scale). Hosts: Citrus, coffee, various fruit and shade trees. Information is given on the geographical distribution in AFRICA, Bechuanaland, Congo, British Cameroons, Kenya, Madagascar, Nyasaland, San Thomé, Southern Rhodesia, Sudan, Tanganyika, Uganda, Union of South Africa, AUSTRALASIA and PACIFIC ISLANDS, Australia, New Guinea, New Zealand, NORTH AMERICA, Mexico, U.S.A.


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