Dimeriella sacchari. [Descriptions of Fungi and Bacteria].

1983 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Saccharum Officinarum ◽  
Purple Spot

Abstract A description is provided for Dimeriella sacchari. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Saccharum officinarum. DISEASE: Red leaf spot of sugarcane (purple spot). GEOGRAPHICAL DISTRIBUTION: Australia (Queensland), Bangladesh, Cuba, Fiji, Indonesia (Java), Nepal, Philippines, Taiwan, Tanzania, Trinidad.

Pseudomonas andropogonis. [Descriptions of Fungi and Bacteria].

1973 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Rapid Development ◽  
Trifolium Subterraneum ◽  
Seed Transmission ◽  
Saccharum Officinarum ◽  
Leaf Spot Disease ◽  
Wet Season ◽  
Velvet Bean ◽  
Stem Lesions

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.

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.

Pestalozziella subsessilis. [Descriptions of Fungi and Bacteria].

2012 ◽  
Author(s):  
T. V. Andrianova
Keyword(s):  
United Kingdom ◽  
Czech Republic ◽  
New Jersey ◽  
New Zealand ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Economic Impacts ◽  
Conservation Status ◽  
Infraspecific Variation ◽  
Chaetomella Raphigera

Abstract A description is provided for Pestalozziella subsessilis, a colonizer of living leaves, causing leaf spot symptoms leading to leaves fading and dying. Some information on its dispersal and transmission, economic impacts, infraspecific variation and conservation status is given, along with details of its geographical distribution (USA (Florida, Kansas, Louisiana, Mississippi, Missouri, New Jersey, Wisconsin), Kazakhstan, Russia, New Zealand, Austria, Bulgaria, Czech Republic, Germany, Hungary, Italy, Poland, Ukraine, and United Kingdom), hosts (Geranium carolinianum (leaf), G. collinum (leaf), G. columbianum (leaf), G. columbinum (leaf), G. macrorrhizum (leaf), G. maculatum (leaf), G. palustre (leaf), G. pratense (leaf), G. pusillum (leaf), G. pyrenaicum (leaf), G. robertianum (leaf), G. sanguineum (leaf), G. sylvaticum (leaf), G. wlassovianum (leaf), Geranium sp., and Oxypolis rigidor [Tiedemannia rigida]) and associated fungi Chaetomella raphigera.

Ascochyta desmazieresii. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Crop Residues ◽  
Lolium Multiflorum ◽  
Leaf Tissue ◽  
Lower Side ◽  
Soil P ◽  
Wet Weather ◽  
Irish Republic

Abstract A description is provided for Ascochyta desmazieresii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Lolium multiflorum and L. perenne. DISEASE: Glume and leaf spot of Italian and perennial ryegrasses. At first leaf lesions start as small purplish or chocolate-brown spots with a distinct red-purple margin. With time these enlarge, become irregular or elliptical, up to 5 mm long and distinctly visible on both sides of the leaves. Finally the centres of older lesions fade to fawn to straw yellow with numerous pycnidia immersed within the leaf tissue on both sides of the leaves but usually abundant pycnidia occur on the lower side. GEOGRAPHICAL DISTRIBUTION: Asia (Japan); Europe (Belgium, Czechoslovakia, Denmark, France, Irish Republic, UK); N. America (USA, California, Oregon, Washington); S. America (Chile, Brazil). TRANSMISSION: No specific studies reported; infection is presumably spread by air-borne conidia in wet weather or heavy dews. The fungus is also probably carried over on crop residues and debris in soil.

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.

Erwinia mallotivora. [Descriptions of Fungi and Bacteria].

1981 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Leaf Surface ◽  
Bacterial Leaf Spot ◽  
Secondary Spread ◽  
Shoot Blight ◽  
Mallotus Japonicus ◽  
Rain Splash

Abstract A description is provided for Erwinia mallotivora. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Mallotus japonicus (Euphorbiaceae). DISEASE: Bacterial leaf spot. The disease starts as water-soaked spots on the newly developing leaves in May and June. The spots tend to form close to the main veins. They enlarge and become angular as they are restricted by the veins, becoming dark brown, and often with a chlorotic halo about 1 mm wide. Spots may coalesce and kill the leaf, and shoot blight may also occur. Under humid conditions bacteria may exude on to the leaf surface. GEOGRAPHICAL DISTRIBUTION: Japan. TRANSMISSION: Unknown, but presumably rain splash plays a part at least in secondary spread.

Cercospora mikaniicola. [Descriptions of Fungi and Bacteria].

1997 ◽  
Author(s):  
H. Y. M. Leung
Keyword(s):  
Puerto Rico ◽  
Hong Kong ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Solomon Islands ◽  
New Guinea ◽  
Stem Canker ◽  
Mikania Micrantha

Abstract A description is provided for Cercospora mikaniicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Mikania cordata, Mikania micrantha (Asteraceae). DISEASE: Leaf spot and stem canker. GEOGRAPHICAL DISTRIBUTION: Bangladesh, Brazil, Cuba, Colombia, Fiji, Guadalcanal, Hong Kong, India, Jamaica, Malaysia, Niue, Pakistan, Papua New Guinea, Puerto Rico, Samoa, Sierra Leone, Singapore, Solomon Islands, Tuvalu, USA (Florida), Vanuatu. TRANSMISSION: Conidia are presumably air-dispersed but there are no detailed studies.

Septoria lactucae. [Descriptions of Fungi and Bacteria].

1972 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Seed Coat ◽  
Lactuca Sativa ◽  
Leaf Spot ◽  
Early Symptoms ◽  
Leaf Surfaces ◽  
A Minor

Abstract A description is provided for Septoria lactucae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Lactuca sativa. DISEASE: A minor leaf spot of lettuce (Lactuca sativa). Early symptoms are small, numerous, irregularly outlined, chlorotic spots beginning on the outer leaves. They enlarge, becoming brown or somewhat silvery, sometimes with a chlorotic halo, and shot-holes develop. Pycnidia, which may not be conspicuous, are found on both leaf surfaces. Infection spreads to the younger leaves and flowers in severe attacks (20: 193; 21: 182). GEOGRAPHICAL DISTRIBUTION: Widespread (CMI Map 485, ed. 1, 1972). TRANSMISSION: By seed, pycnidia can be found embedded in the seed coat (41: 267).

Ramularia pratensis. [Descriptions of Fungi and Bacteria].

1986 ◽  
Author(s):  
S. Wilson
Keyword(s):  
Great Britain ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Channel Islands ◽  
Wind Dispersal ◽  
Rumex Acetosa

Abstract A description is provided for Ramularia pratensis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Rumex acetosa, R. aquaticus, R. acetosella, R. hydrolapathum, R. longifolius, R. obtusifolius, R. thyrsiflorus. DISEASE: Leaf spot of Rumex spp. Round or oval lesions, from (1-) 2 (-3) mm diam., with a distinct purple-brown border and buff centre. GEOGRAPHICAL DISTRIBUTION: Europe: Channel Islands, Eire, Great Britain, Germany, Hungary, Italy, Sweden. TRANSMISSION: Probably wind-dispersal by air-borne spores.

Pyrenophora erythrospila. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot

Abstract A description is provided for Pyrenophora erythrospila. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agrostis, Hordeum and Triticum. DISEASE: Leaf spot of bent grass and red top. GEOGRAPHICAL DISTRIBUTION: Australia, Europe, New Zealand, North America. TRANSMISSION: By wind-borne conidia.

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