Cercospora gossypina. [Descriptions of Fungi and Bacteria].

Author(s):  
S. Little

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.

Author(s):  
S. Little

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.


Author(s):  
P. M. Kirk

Abstract A description is provided for Phaeoisariopsis simulata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Species of Cassia including C. marylandica (American senna). DISEASE: Leaf spot. GEOGRAPHICAL DISTRIBUTION: Africa (Tanzania), North America (U.S.A. (IL, KS, MA, AR)), Central America & West Indies (Puerto Rico), South America (Venezuela). TRANSMISSION: Presumably by air borne conidia. Survival mechanisms unknown.


Author(s):  

Abstract A new distribution map is provided for Phaeoisariopsis bataticola (Cif. & Bruner) M.B. Ellis. Host: sweet potato (Ipomoea spp.). Information is given on the geographical distribution in NORTH AMERICA, USA, Florida, CENTRAL AMERICA & WEST INDIES, Cuba, Dominican Republic, Puerto Rico, SOUTH AMERICA, Venezuela.


Author(s):  
A. Sivanesan

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).


Author(s):  
J. C. David

Abstract A description is provided for Pseudocercospora kaki. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot of persimmon. HOSTS: Diospyros hispida, D. kaki, D. lotus, D. texana, D. tupru (Ebenaceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: USA (Louisiana), Bermuda. SOUTH AMERICA: Brazil (São Paolo, Minas Gerais). ASIA: China (Hong Kong, other provinces also, see GUO & HSIEH, 1995), Republic of Georgia (BRAUN & MEL'NIK, 1997), India, Iran (56: 5475), Japan, Nepal, Taiwan. EUROPE: Russia (BRAUN & MEL'NIK, 1997). TRANSMISSION: Conidia are dispersed by rain splash (ZHU et al., 1996).


Author(s):  
E. Punithalingam

Abstract A description is provided for Phomopsis cocoina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cocos nucifera and Corypha umbraculifera. DISEASE: Leaf spot of coconut and recently found to be associated with stem bleeding of coconut palms (personal communication). Also perhaps involved in the rot of coconut husk. GEOGRAPHICAL DISTRIBUTION: Africa (Kenya, Mauritius, Seychelles); Asia (India, Malaysia (Sabah, Sarawak), Nepal, Sri Lanka); Australasia and Oceania (Guam Island, Papua New Guinea, Solomon Islands); West Indies (Jamaica, Puerto Rico, Trinidad). TRANSMISSION: No specific studies reported; presumably by conidia spread by rain splash.


Author(s):  
J. E. M. Mordue

Abstract A description is provided for Entyloma calendulae f. dahliae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Dahlia variabilis, D. coccinia, D. pinnata; cultivated dahlia. DISEASE: Leaf spot of Dahlia. GEOGRAPHICAL DISTRIBUTION: Widely distributed in Europe including Finland and Sweden; Africa; North America (USA); Central and South America and West Indies (Argentina, Brazil, Colombia, El Salvador, Guatemala, Jamaica, Venezuela); Asia (Burma, India, Indonesia, Israel, Japan, Malaysia, Nepal, Pakistan, Sri Lanka, Papua New Guinea); Australia and New Zealand. CMI Map 114, ed. 4, 1983. TRANSMISSION: Soil-borne. Overwinters as ustilospores buried in plant debris; not transmitted by seed or in tubers, although spread by soil attached to tubers is possible (6, 97; 17, 655; 41, 603; 49, 1050); mature ustilospores are capable of remaining viable for a long period when dry (16, 304). Conidia contribute to dissemination during the growing season (49, 1050).


Author(s):  
P. M. Kirk

Abstract A description is provided for Pseudocercospora abelmoschi. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On species of Hibiscus, especially H. esculentus. DISEASE: Causes a leaf spot or blight on Hibiscus spp. GEOGRAPHICAL DISTRIBUTION: Africa (Gabon, Ghana, Guinea, Kenya, Malawi, Nigeria, Sierra Leone, Sudan, Tanzania, Togo, Uganda), Asia (Burma, India, Nepal, Pakistan), East Indies (Brunei, Malaya, New Hebrides, Philippines, Sarawak, Taiwan), Middle East (Yemen), Europe (Italy: San Domingo), North America (USA), West Indies (Antigua, Grenada, Jamaica, St. Vincent, Trinidad), South America (Venezuela). TRANSMISSION: By air-borne conidia.


Author(s):  

Abstract A new distribution map is provided for Sogatodes cubanus (Crawf.) (Hemipt., Delphacidae). Host Plants: Rice, Echinochloa spp. A vector of the virus of 'hoja blanca' disease. Information is given on the geographical distribution in AFRICA, Nigeria, NORTH AMERICA, Mexico, CENTRAL AMERICA and WEST INDIES, Cuba, Puerto Rico, SOUTH AMERICA, Colombia, Surinam, Venezuela.


Author(s):  

Abstract A new distribution map is provided for Phyllachora canafistulae F.L. Stevens & Dalby. Hosts: Cassia spp. Information is given on the geographical distribution in NORTH AMERICA, Bermuda, USA, CENTRAL AMERICA & WEST INDIES, Costa Rica, Cuba, Dominican, Republic, Grenada, Jamaica, Panama, Puerto Rico, Trinidad, SOUTH AMERICA, Brazil.


Sign in / Sign up

Export Citation Format

Share Document