Phomopsis caricae-papayae. [Descriptions of Fungi and Bacteria].

1985 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
South Africa ◽  
Geographical Distribution ◽  
West Indies ◽  
Carica Papaya ◽  
Natural Infection ◽  
Fruit Rot ◽  
Stem Rot ◽  
Advanced Stage ◽  
Water Splash ◽  
Infected Area

Abstract A description is provided for Phomopsis caricae-papayae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Carica papaya (papaw or papaya or pawpaw). DISEASE: Stem rot and fruit rot of Carica papaya. Stem rot starts near the base or higher as well defined lesions spreading rapidly. In severe cases causes death of plants. On fruits the visible symptoms are water-soaked spot on the surface which increases on maturity. The infected area becomes depressed, dark brown to black and revealing cracks at an advanced stage (Dhingra & Khare, 1971). GEOGRAPHICAL DISTRIBUTION: Africa (Nigeria, South Africa), Asia (India, Pakistan), Australasia and Oceania (Australia, Queensland; Hawaii); West Indies (Dominican Republic, St. Lucia); South America (Brazil, Pernambuco; Venezuela). TRANSMISSION: The method of natural infection and factors which favour the spread of the disease have not been thoroughly studied. Presumably by conidia dispersed by water splash and the fungus survives on dry stems and leaf stalks.

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.

Pythium deliense. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
G. M. Waterhouse
Keyword(s):  
Geographical Distribution ◽  
West Indies ◽  
Cucurbita Pepo ◽  
Carica Papaya ◽  
Solanum Melongena ◽  
Saccharum Officinarum ◽  
Fruit Rot ◽  
Damping Off ◽  
Tomato Seedlings ◽  
Hibiscus Esculentus

Abstract A description is provided for Pythium deliense. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Hibiscus esculentus, Lycopersicon esculentum, Nicotiana tabacum and Saccharum officinarum. Also on Capsicum annuum, Carica papaya, Cucumis sativus, Cucurbita pepo, Datura fastuosa, Petunia sp. and Solanum melongena on inoculation (Rangaswami, 1959; Herb. IMI). DISEASE: Causing damping-off of tomato seedlings, stem-burn of tobacco and fruit rot of okra. GEOGRAPHICAL DISTRIBUTION: Asia (Indonesia, Sumatra) and Australasia & Oceania (Australia, New Guinea, Papua); North America (? United States); Central America & West Indies (? N˜caragua). TRANSMISSION: Soil-borne.

Didymella bryoniae. [Descriptions of Fungi and Bacteria].

1972 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Natural Infection ◽  
Seed Transmission ◽  
Stem Canker ◽  
Fruit Rot ◽  
Didymella Bryoniae ◽  
Gummy Stem Blight ◽  
Water Splash ◽  
Characteristic Features

Abstract A description is provided for Didymella bryoniae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Cucurbits (Bryonia, Colocynthis, Cucumis, Cucurbita, Luffa, Momordica and Trichosanthes). DISEASE: Gummy stem blight of Cucurbitaceae, showing a variety of symptoms which are referred to as leaf spot, stem canker, vine wilt and black fruit rot. Lesions on leaves and fruit usually begin as spreading water-soaked areas; in the former these may have a chlorotic halo, become light brown and irregular in outline, leaves can be destroyed. On fruit, dark cracked sunken lesions form, beneath which an extensive rot is found. In the field the first symptoms may be plant collapse where sunken, girdling cankers lead to total loss. Infection also occurs on seedlings. The main characteristic features are the gummy exudate on stem and fruit lesions and the abundant pycnidia followed by perithecia, GEOGRAPHICAL DISTRIBUTION: Widespread (CMI Map 450, ed. 2, 1970). Records not yet mapped are: Brunei, Mexico, Netherlands, Pitcairn Islands, Republic of Ireland, Salvador. TRANSMISSION: Through conidia by water splash and aerially by ascospores which, in glasshouses in England, had a diurnal periodicity with a peak at 1800-2000 hr (46, 825; 48, 672); and in USA occurred mostly at night (50, 2621). Both spore types may serve as primary inoculum and between-crop survival is an important factor in the epidemiology. Reports on seed transmission are conflicting in cucumber, although seed could be inoculated successfully, no evidence for natural infection was found (48, 322). In the glasshouse transmission by pruning knives has been demonstrated (46, 825).

Phytophthora capsici. [Descriptions of Fungi and Bacteria].

1985 ◽  
Author(s):  
D. J. Stamps
Keyword(s):  
Saudi Arabia ◽  
Geographical Distribution ◽  
West Indies ◽  
Direct Contact ◽  
Phytophthora Capsici ◽  
Soft Rot ◽  
Fruit Rot ◽  
Water Splash ◽  
Wide Range ◽  
Stem And Fruit Rot

Abstract A description is provided for Phytophthora capsici. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: A fairly wide range including Capsicum, aubergine, tomato and members of the Cucurbitaceae. DISEASE: Stem and fruit rot of Capsicum, soft rot of tomato and cucurbit fruits. GEOGRAPHICAL DISTRIBUTION: Europe (Bulgaria, France, Italy, Greece, Spain, USSR), Asia (China India, Iran, Israel, Japan, Korea, Lebanon, Malaysia, Saudi Arabia, Turkey), North America (Canada, USA, Mexico), Central and South America and West Indies. (CMI Map 277, ed. 4, 1977). TRANSMISSION: By water splash, soil-borne. By direct contact between melon fruits during marketing (19, 513).

Mycosphaerella rosicola. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
South Africa ◽  
Hong Kong ◽  
Geographical Distribution ◽  
West Indies ◽  
Water Splash

Abstract A description is provided for Mycosphaerella rosicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Rosa spp. DISEASE: Cercospora spot of rose. GEOGRAPHICAL DISTRIBUTION: Africa: Kenya, South Africa, Zimbabwe. Asia: Burma, Cyprus, Hong Kong, India, Malaysia, Pakistan, Philippines, Taiwan. West Indies: Trinidad. Australasia: Australia. Europe. TRANSMISSION: Presumably by windborne ascospores and conidia, water splash and contact with naturally infected plants.

Phomopsis oryzae-sativae. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Leaf Blade ◽  
Leaf Sheath ◽  
Advanced Stage ◽  
Collar Rot ◽  
Oryza Saliva ◽  
Water Splash

Abstract A description is provided for Phomopsis oryzae-sativae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Oryza saliva. DISEASE: Collar rot of rice, appearing at the end of tillering stage. Visible symptoms are small dark brown lesions at the base of the auricle of the topmost fully expanded leaf. These lesions enlarge to cover the whole auricle and in the advanced stage lesions extend to the adjacent parts of the leaf sheath and leaf blade. Within 14 days the blade joint at the top of leaf sheath turns dark brown and then rots, causing the leaf blade to drop off (Kanjanasoon, 1962). GEOGRAPHICAL DISTRIBUTION: Asia (Thailand). TRANSMISSION: No studies reported. Conidia presumably dispersed by water splash.

Drechslera biseptata. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Carica Papaya ◽  
Fruit Rot

Abstract A description is provided for Drechslera biseptata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agropyron, Aira, Avena, Dactylis, Hordeum, Microlaena, Sorghum, Tetrarrhena, Triticum, Vulpia and Zea; also isolated from Carica papaya (67, 5097). DISEASE: Seed-borne, fruit rot of papaya. GEOGRAPHICAL DISTRIBUTION: Australia, Europe, India, New Zealand, North America. TRANSMISSION: Wind-borne conidia, seed-borne (59, 2159).

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).

Gibberella fujikuroi var. subglutinans. [Descriptions of Fungi and Bacteria].

1964 ◽  
Author(s):  
C. Booth
Keyword(s):  
Geographical Distribution ◽  
Sugar Cane ◽  
Stem Borer ◽  
Fruit Rot ◽  
Gibberella Fujikuroi ◽  
Stem Rot ◽  
South Wales ◽  
Pokkah Boeng ◽  
Wide Range ◽  
Southern Rhodesia

Abstract A description is provided for Gibberella fujikuroi var. subglutinans. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On several hosts of economic importance in the Gramineae; also on a wide range of hosts represented by the following families: Amaryllidaceae, Anacardiaceae, Bromeliaceae, Chenopodiaceae, Convolvulaceae, Cruciferae, Iridaceae, Leguminosae, Liliaceae, Malvaceae, Marantaceae, Musaceae, Palmae, Rosaceae, Rutaceae, Sterculiaceae (14: 708; 31: 515; 36: 501; 40: 89 and Herb. IMI). DISEASES: Causes a seedling blight, and root, stalk and kernel rot of maize; also on heads and stalks of sorghum associated with a foot and stem rot, and causing a stem rot and top rot of sugar-cane ('pokkah boeng'). Other records include a wilt of Crotalaria, a heart rot of leaves of banana and Manila hemp, and fruit rot of banana, cacao and pineapple. There appear to be no references to pathogenicity to rice. Also entomogenous on cereal stem borer larvae and other insects (27: 71; 33: 382; 38: 141, 740). GEOGRAPHICAL DISTRIBUTION: Africa (Central African Republic, Congo, Ghana, Ivory Coast, Kenya, Mauritius, Morocco, Reunion, Sierra Leone, South Africa, Southern Rhodesia, Tanganyika, Uganda); Asia (Formosa (Taiwan), Hong Kong, India, Java, Indo-China, Philippines, Syria); Australasia (Hawaii, New South Wales, New Zealand, Victoria); Europe (Czechoslovakia, Germany,? Italy, Poland, Romania); Central America & West Indies (French Antilles, Honduras, Trinidad); North America (Canada, United States); South America (Argentina, Peru). (CMI Map 191). TRANSMISSION: Both seed and soil-borne. Air-borne ascospores produced from perithecia on over-wintered plant debris or on dead stalks of sugar-cane at the beginning of the rainy season are also important sources of infection (30: 344). The pathogen may also be disseminated on pupae and adults of cereal stem borers and their parasites in sugar-cane (33: 382).

Diaporthe capsici. [Descriptions of Fungi and Bacteria].

1982 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
West Indies ◽  
Fruit Rot ◽  
Rain Splash

Abstract A description is provided for Diaporthe capsici. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Capsicum spp. DISEASE: Dieback (Anon., 1972) and fruit rot of chillies, GEOGRAPHICAL DISTRIBUTION: Africa (Ethiopia, Kenya, Mauritius, Nigeria); Asia (India, Sabah, Sarawak, Western Malaysia, Philippines); Australasia & Oceania (Fiji, Solomon Is.); West Indies (Trinidad). TRANSMISSION: No studies reported; presumably by conidia spread by rain splash although it is probable that the fungus might also be seed borne.

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