Cochliobolus cymbopogonis. [Descriptions of Fungi and Bacteria].

1982 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Geographical Distribution ◽  
Leaf Spots ◽  
Lemon Grass ◽  
Cymbopogon Nardus ◽  
Splash Dispersal

Abstract A description is provided for Cochliobolus cymbopogonis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Andropogoneae. DISEASE: Seed and seedling blights; leaf spots of citronella (Cymbopogon nardus) and lemon grass (C. citratus). GEOGRAPHICAL DISTRIBUTION: Widespread. TRANSMISSION: Splash dispersal of ascospores (60, 2421); through seed.

Drechslera sacchari. [Descriptions of Fungi and Bacteria].

1971 ◽  
Author(s):  
M. B. Ellis
Keyword(s):  
Geographical Distribution ◽  
French Guiana ◽  
Toxin Production ◽  
Saccharum Officinarum ◽  
Pennisetum Purpureum ◽  
Leaf Spots ◽  
Lemon Grass ◽  
Axis Parallel ◽  
Young Leaves ◽  
The Tropics

Abstract A description is provided for Drechslera sacchari[Bipolaris sacchari]. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Saccharum officinarum and also reported causing diseases in Pennisetum purpureum (Napier or elephant grass) and Cymbopogon citratus[Cymbopogon nardus] (lemon grass). DISEASE: Eye spot and seedling blight of sugarcane. Small reddish spots, surrounded by a straw-coloured halo, develop on the leaves; conspicuous on young leaves, becoming 5-12 × 3-6 mm, longer axis parallel to the main veins, coalescing. These spots may develop long chlorotic streaks running towards the leaf tip, 60-90 cm long and possibly due to toxin production. Germinating seed may be killed 12-14 days from sowing and severely attacked young plants show a top rot. On lemon grass the leaf spots have pale centres with a dark purple border, 4-10 × 1.5-2 mm (20: 229). Older leaves of Napier grass are attacked most, severe outbreaks causing death (17: 753; 21: 258). GEOGRAPHICAL DISTRIBUTION: Widespread in the tropics and subtropics (CMI Map 349, 2nd ed. 1968). Additional records not yet mapped: Cambodia, French Guiana, Panama, Salvador and Senegal. TRANSMISSION: Presumably through air-dispersed conidia; seed-borne infection also occurs (36: 350).

Calonectria variabilis. [Descriptions of Fungi and Bacteria].

1993 ◽  
Author(s):  
P. W. Crous
Keyword(s):  
Geographical Distribution ◽  
Theobroma Grandiflorum ◽  
Leaf Spots ◽  
Splash Dispersal

Abstract A description is provided for Calonectria variabilis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Didymopanax morototoni, Eucalyptus spp., Theobroma grandiflorum. DISEASE: Leaf spots. GEOGRAPHICAL DISTRIBUTION: Brazil. TRANSMISSION: Wind and splash dispersal of conidia and ascospores.

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.

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.

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.

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