Alternaria macrospora. [Descriptions of Fungi and Bacteria].

Author(s):  
M. B. Ellis

Abstract A description is provided for Alternaria macrospora. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On cotton (Gossypium spp.) and possibly on other hosts. DISEASE: Leaf spot of cotton. On leaves a small, necrotic spot, with a purplish halo, expands to about 1 cm diam., the centre becoming grey and cracked; the zonation is more clearly defined on the upper surface. Defoliation can be severe, especially where the peduncle becomes infected (28: 65). Stem lesions begin as a small sunken spot which develops into a canker, the tissue splitting and cracking to cause a break. The glandular areas on the receptacle are also attacked and this can result in failure of the boll to develop. Flowers and bolls may be shed; the latter become mummified and the fibre attacked (20: 461; 30: 37). Boll rots can also be caused by A. gossypina (Thum.) Hopkins (17: 674; 26: 14). GEOGRAPHICAL DISTRIBUTION: Australia, Brazil, Central African Republic, Ceylon, China, Congo, Egypt, Ethiopia, Formosa, France, French Sudan, Ghana, Guadeloupe, India, Italy, Jamaica, Japan, Kenya, Malawi, Morocco, Nicaragua, Nigeria, Pakistan, Rhodesia, Rumania, Senegal, Sierra Leone, South Africa, Somalia, Sudan, Tanzania, Togo, Trinidad, Uganda, Venezuela, Zambia. TRANSMISSION: No observations appear to have been reported; seed transmission is possible.

Author(s):  

Abstract A new distribution map is provided for Scutellonema clathricaudatum Whitehead. Nematoda: Hoplolaimidae. Hosts: polyphagous. Information is given on the geographical distribution in Asia (India, Manipur, Thailand), Africa (Benin, Burkina Faso, Cameroon, Central African Republic, Congo, Congo Democratic Republic, Cote d'Ivoire, Ghana, Guinea, Kenya, Malawi, Mali, Mozambique, Niger, Nigeria, Sierra Leone, South Africa, Sudan, Tanzania, Togo, Uganda), Central America and Caribbean (Cuba).


Author(s):  

Abstract A new distribution map is provided for Maize streak monogeminivirus Viruses: Geminiviridae: Monogeminivirus Hosts: Mainly maize (Zea mays). Information is given on the geographical distribution in ASIA, Yemen, AFRICA, Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Congo, Cote d'Ivoire, Egypt, Ethiopia, Gabon, Ghana, Guinea, Kenya, Madagascar, Malawi, Mali, Mauritius, Mozambique, Niger, Nigeria, Reunion, Rwanda, Sao Tome & Principe, Senegal, Sierra Leone, South Africa, Sudan, Swaziland, Tanzania, Togo, Uganda, Zaire, Zambia, Zimbabwe.


Author(s):  
J. F. Bradbury

Abstract A description is provided for Pseudomonas andropogonis[Burkholderia andropogonis]. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Sorghum vulgare[Sorghum bicolor] and its vars. sudanense, technicum, saccharatum, S. halepense and unspecified grain and grass varieties of Sorghum, Zea mays, Bougainvillea sp., Mucuna deeringiana, Trifolium repens, T. pratense, Euchlaena mexicana and Vicia saliva. The following have been infected artificially: Medicago sativa, Viciafaba, Trifolium subterraneum by spray inoculation, and Dolichos lablab, Lespedeza sp., Phaseolus vulgaris (Allen et al. ; 36, 408) and Saccharum officinarum (Elliott & Smith, 1929) after injury. DISEASE: Bacterial stripe of sorghum, bacterial leaf spot or blight of velvet bean, vetch and other legumes. usually a leaf spot disease. On species of Sorghum spots and stripes on leaves and sheaths vary in colour from reddish or purplish-brown to tan or brick red, depending on host reaction. On legumes the spots are usually small, angular, dark brown to dark reddish-brown or nearly black. Stem lesions are extensive in vetch, where they can result in death progressively from the base. GEOGRAPHICAL DISTRIBUTION: Argentina, Brazil, USA, Rhodesia, Uganda, Zambia, South Africa, Nigeria, Hungary, USSR, China, Australia (NSW), Japan, Taiwan (CMI Map 495, ed. 1, 1973). TRANSMISSION: In the field transmission is by wind and rain and can lead to very rapid development of the disease if conditions remain humid. Overwintering is thought to take place in plant debris, in soil and possibly in weed hosts (42, 194). There is some observational evidence for seed transmission in Sorghum (Elliott & Smith, 1929) and in Mucuna (Allen et al, 1970). This would explain the very scattered distribution. With Bougainvillea, when the new wet season starts, the young growth is infected by rain splash from old infected leaves that have lasted over from the previous wet season, either attached or on the ground.


Author(s):  

Abstract A new distribution map is provided for Earias biplaga Wlk. (Lep., Noctuidae). Host Plants: Cotton, ether Malvaceae, cacao. Information is given on the geographical distribution in AFRICA, Angola, Burundi, Central African Republic, Chad, Congo, Kinshasa, Dahomey, Ethiopia, Ghana, Guinea, Ivory Coast, Kenya, Madagascar, Malawi, Mali, Mauritius, Mozambique, Niger, Nigeria, Principe, Rhodesia, São Tomé, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Upper Volta, Urundi, Zambia.


Author(s):  
E. Punithalingam

Abstract A description is provided for Phoma insidiosa. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Sorghum spp., Oryza sativa, Saccharum officinarum, Setaria, Triticum aestivum and Zea mays. DISEASE: A minor leaf spot of Sorghum and Setaria spp. and other Gramineae. The macroscopic symptoms are variable and not particularly distinctive. Leaf lesions have an irregular outline, sometimes beginning at the tip or edge, and are brown to grey with narrow redish-purple margins. The scattered pycnidia occur sometimes in clusters or lines, interveinally. Spotting and pycnidia form on grain and glumes. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia (W.), Brazil, Canada, China, Cuba, Ethiopa, Hawaii, India, Jamaica, Kenya, Laos, Malawi, Malaysia (W.), Nepal, Nigeria, Puerto Rico, Rhodesia, Senegal, Sierra Leone, South Africa, Sudan, Tanzania, Uganda, USA, USSR, Venezuela, Zaire Republic, Zambia. The fungus may be detected on introduced seed. TRANSMISSION: Probably carried on the seed; infection of the seed reduces both germination and subsequent growth. May remain viable on seed for 1 yr.


Author(s):  

Abstract A new distribution map is provided for Gibberella xylarioides R. Heim & Saccas Ascomycota: Hypocreales Hosts: Coffee (Coffea spp.). Information is given on the geographical distribution in AFRICA, Angola, Burkina Faso, Cameroon, Central African Republic, Congo, Congo Democratic Republic, Cote d'Ivoire, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Niger, Nigeria, Senegal, South Africa, Sudan, Swaziland, Tanzania, Togo, Uganda, Zimbabwe.


Author(s):  
A. Sivanesan

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.


Author(s):  

Abstract A new distribution map is provided for Jacobiasca lybica (de Bergevin) [Hemiptera: Cicadellidae] Cotton jassid. Attacks cotton, aubergine, grapevine, potato, tomato. Information is given on the geographical distribution in EUROPE, Albania, Sardinia, Sicily, Spain, Turkey, ASIA, India, Iran, Israel, Lebanaon, Saudi Arabia, South Yemen, AFRICA, Algeria, Central, African Republic Egypt, Ethiopia, Kenya, Libya, Mauritius, Morocco, Mozambique, Nigeria, Senegal, Somalia, South Africa, Sudan, Tanzania, Tunisia, Uganda, Zaire, SOUTH AMERICA, Argentina.


Author(s):  

Abstract A new distribution map is provided for Papilio demodocus Esper [Lepidoptera: Papilionidae] Orange dog, citrus butterfly, citrus swallowtail, African lime butterfly. Attacks Citrus and other Rutaceae. Information is given on the geographical distribution in AFRICA, Bioko, Botswana, Burundi, Cameroon, Cape Verde Islands, Chad, Comoro Islands, Congo, Equatorial, Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mauritius, Mozambique, Namibia, Niger, Nigeria, Reunion, Sao, Tome, & Principe, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togoland, Uganda, Zaire, Zimbabwe, ASIA, Oman, Saudi Arabia, South Yemen, Yemen.


Author(s):  
J. E. M. Mordue

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.


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