Calonectria spathulata. [Descriptions of Fungi and Bacteria].

1993 ◽  
Author(s):  
P. W. Crous
Keyword(s):  
Geographical Distribution ◽  
Araucaria Angustifolia ◽  
Leaf Spots ◽  
Eucalyptus Viminalis

Abstract A description is provided for Calonectria spathulata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Araucaria angustifolia; Eucalyptus viminalis, E. cloeziana, E. grandis, Pteridium sp. DISEASE: Leaf spots (65, 6198). GEOGRAPHICAL DISTRIBUTION: Brazil. TRANSMISSION: Probably wind and splash dispersed.

Cercostigmina protearum var. protearum. [Descriptions of Fungi and Bacteria].

1999 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
South Africa ◽  
Geographical Distribution ◽  
Leaf Spots ◽  
Brown Leaf

Abstract A description is provided for Cercostigmina protearum var. protearum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Causing round or sometimes irregular, pale brown or greyish-brown leaf spots 5-17 mm diameter. HOSTS: Leucospermum conocarpum, Protea. TRANSMISSION: By air-borne conidia. GEOGRAPHICAL DISTRIBUTION: AFRICA: South Africa.

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.

Pestalotiopsis mangiferae. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
Hong Kong ◽  
Dominican Republic ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Host Plants ◽  
Solomon Islands ◽  
Mangifera Indica ◽  
Brown Spot ◽  
Leaf Spots

Abstract A description is provided for Pestalotiopsis mangiferae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Mangifera indica; also on Anacardium occidentale, Combretum decandrum, Eucalyptus spp., Mimusops spp., Vitis vinifera and many other unrelated host plants. DISEASE: Grey leaf spot of Mangifera indica. The spots vary in size from a few mm to several cm in length, are usually sharply delimited by a dark, raised border, and are silvery grey above and grey to brown below; leaf spots on other hosts are similar. Brown spot or rot of mango fruits is also known. GEOGRAPHICAL DISTRIBUTION: Ghana, Nigeria, Sierra Leone, Tanzania, Uganda, Zaire, Zambia; Bangladesh, Brunei, Burma, Hong Kong, India, Malaysia, Nepal, Sabah, Solomon Islands, Sri Lanka; Australia; Dominican Republic; Venezuela. TRANSMISSION: Inoculation studies with conidia and mycelium have shown P. mangiferae to be a weak parasite, capable of infecting young injured leaves, injured fruits, older uninjured leaves and healthy fruits if in contact with diseased tissue (35, 378; 40, 421). It has been isolated from soil, but the possibility of transmission through soil has not been investigated.

Cochliobolus verruculosus. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Saudi Arabia ◽  
Puerto Rico ◽  
Geographical Distribution ◽  
New Caledonia ◽  
Solomon Islands ◽  
Crown Rot ◽  
Dry Rot ◽  
Leaf Spots ◽  
Seed Decay ◽  
Windward Islands

Abstract A description is provided for Cochliobolus verruculosus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Avena, Buchloë, Chloris, Cynodon, Eleusine, Hordeum, Oryza, Leptochloa, Paspalum, Pennisetum, Saccharum, Sorghum, Triticum, Typha and Zea. Also from many dicotyledenous hosts. DISEASE: Leaf spots, dry-rot of pineapple (61, 6510; 68, 2757), associated with crown rot of banana (54, 4051) and seed decay of sugarcane (63, 3545). GEOGRAPHICAL DISTRIBUTION: Australia, Bangladesh, Burma, Cuba, Egypt, Fiji, Ghana, India, Indonesia, Israel, Jamaica, Japan, Kenya, Malawi, Malaysia, Nepal, New Caledonia, New Zealand, Nicaragua, Nigeria, Pakistan, Peru, Puerto Rico, Saudi Arabia, Solomon Islands, Sri Lanka, Tanzania, Thailand, USA, Venezuela, Windward Islands, Yemen, Zambia. TRANSMISSION: By wind-borne conidia and seed-borne (67, 4997).

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).

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.

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.

Ramularia alba. [Descriptions of Fungi and Bacteria].

1986 ◽  
Author(s):  
J. Ingham
Keyword(s):  
New York ◽  
British Columbia ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Tissue ◽  
Wind Dispersal ◽  
White Mould ◽  
Leaf Spots ◽  
Lathyrus Odoratus ◽  
Sweet Pea

Abstract A description is provided for Ramularia alba. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Lathyrus odoratus, the sweet pea. DISEASE: White blight of sweet pea, also called white mould or Cladosporium blight. Leaf spots vary from yellow flecks to buff coloured dead areas, which may be circular or irregular in shape merging gradually into healthy leaf tissue. Leaf spots may merge together affecting most of the leaf and in such cases defoliation may result (30, 41). GEOGRAPHICAL DISTRIBUTION: Europe (Denmark, England, Sweden). North America (Canada: British Columbia, Ontario; USA: California, Massachusetts, New Jersey, New York, Pennsylvania, Texas). TRANSMISSION: By wind dispersal of air-borne conidia.

Acidovorax avenae subsp. citrulli. [Descriptions of Fungi and Bacteria].

1994 ◽  
Author(s):  
G. S. Saddler
Keyword(s):  
Geographical Distribution ◽  
Cucumis Melo ◽  
Large Firm ◽  
Citrullus Lanatus ◽  
Natural Host ◽  
Seedling Blight ◽  
Infected Seed ◽  
Leaf Spots

Abstract A description is provided for Acidovorax avenae subsp. citrulli. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Citrullus lanatus is the natural host. Cucumis melo (61, 1997) has also been noted and other members of the Cucurbitaceae can produce symptoms following inoculation. DISEASE: Two distinct symptoms have been observed: 1) leaf spots, forming water-soaked lesions on the cotyledons of seedlings; 2) watermelon fruit blotch, forming large, firm, water-soaked lesions with irregular margins on fruit. As lesions age on fruit the periderm can crack and bacterial ooze is produced. The pathogen is thought to enter the fruit through stomata; immature fruits in particular are infected (Frankle et al., 1993). GEOGRAPHICAL DISTRIBUTION: Australia, Guam, Tinian, (possibly Malaysia and Indonesia, IMI records), USA (AR, DE, Florida, GA, IW, IN, MD, NC, SC). TRANSMISSION: The spread of seedling blight appears to be seed borne (Sowell & Schaad, 1979). No information on the spread of watermelon fruit blotch exists at present, though dissemination by infected seed seems likely.

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