Septoria glycines. [Descriptions of Fungi and Bacteria].

1972 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Glycine Max ◽  
Geographical Distribution ◽  
Brown Spot ◽  
Early Symptoms ◽  
Central Canada

Abstract A description is provided for Septoria glycines. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Glycine max. DISEASE: Brown spot of soyabean (Glycine max). Early symptoms are usually on the cotyledons and first true leaves, spots are redish-brown, somewhat angular, up to 5 mm diam. and very numerous. They spread acropetally, coalesce and result in defoliation. Spots appear on stems and pods, which bear pycnidia (6: 74). GEOGRAPHICAL DISTRIBUTION: Occurs in E. Asia (China, Japan, USSR), and parts of E. and central Canada and USA (CMI Map 361, ed. 1, 1958). An additional record not yet mapped is Colombia. TRANSMISSION: Largely by seed which is penetrated mostly via the placenta and funicle; seed bears necrotic areas and pycnidia (35: 66; 37: 199).

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.

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).

Hoplolaimus magnistylus. [Distribution map].

2016 ◽  
Author(s):  
Keyword(s):  
Glycine Max ◽  
North America ◽  
Geographical Distribution ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Hoplolaimus magnistylus Robbins. Secermentea: Tylenchida: Hoplolaimidae. Hosts: soyabean (Glycine max) and cotton (Gossypium sp.). Information is given on the geographical distribution in North America (USA, Arkansas, Florida, Illinois, Mississippi, Ohio and Tennessee).

Septoria glycines. [Distribution map].

1985 ◽  
Author(s):  
Keyword(s):  
North Carolina ◽  
Glycine Max ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Himachal Pradesh ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Septoria glycines Hemmi. Hosts: soyabean (Glycine max). Information is given on the geographical distribution in Africa, Zimbabwe, Asia, China, Honan, Yunnan, Manchuria, India, Himachal Pradesh, Japan, Korea, Nepal, Taiwan, USSR, Europe, Germany, Italy, Romania, Yugoslavia, North America, Canada, Ontario, USA, Arkansas, Delaware, Illinois, Indiana, Iowa, Maryland, Minnesota, Missouri, North Carolina, Wisconsin, South America, Bolivia, Brazil, Colombia.

Corynebacterium flaccumfaciens. [Distribution map].

1975 ◽  
Author(s):  
Keyword(s):  
Glycine Max ◽  
North America ◽  
Phaseolus Vulgaris ◽  
Geographical Distribution ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Corynebacterium flaccumfaciens (Hedges) Dowson. Hosts: Bean (Phaseolus vulgaris and other P. spp.), soyabean (Glycine max). Information is given on the geographical distribution in ASIA, Turkey, AUSTRALASIA & OCEANIA, Australia, EUROPE, Bulgaria, Greece, Hungary, Romania, Yugoslavia, NORTH AMERICA, Canada (Ontario), Mexico, USA.

Sphaerotheca fuliginea. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. N. Kapoor
Keyword(s):  
Glycine Max ◽  
Powdery Mildew ◽  
Geographical Distribution ◽  
World Wide ◽  
Solanum Melongena ◽  
Sphaerotheca Fuliginea ◽  
Hibiscus Esculentus

Abstract A description is provided for Sphaerotheca fuliginea. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On numerous genera of Compositae, Cucurbitaceae and Scrophulariaceae. Also on Helianthemum spp. (Cistaceae); Arabis spp., Braya spp., Capscila spp., Cardaminc spp., Draba spp., Parrya spp. (Cruciferae); Dipsacus spp. (Dipsacaceae); Astragalu, spp., Glycine max, Phascolus spp., Rhynchosia spp., Vigna spp.(Leguminosae); Plantago spp. (Plantaginaceae); Hibiscus esculentus (Malvaceae); Hyoscyarnus niger, Mandragora officinalis, Petunia spp., Physalis spp., Solanum melongena (Solanaceae). (Blumer, 1967; Hirata, 1966). DISEASE: Powdery mildew of cucurbits. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Not known.

Cochliobolus miyabeanus. [Descriptions of Fungi and Bacteria].

1971 ◽  
Author(s):  
M. B. Ellis
Keyword(s):  
Oryza Sativa ◽  
Geographical Distribution ◽  
Primary Infection ◽  
French Polynesia ◽  
Brown Spot ◽  
Seed Infection ◽  
Seedling Blight ◽  
Late Afternoon ◽  
Leaf Spots ◽  
Cochliobolus Miyabeanus

Abstract A description is provided for Cochliobolus miyabeanus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Oryza sativa and other species of Oryza. DISEASE: Brown spot and seedling blight of rice. Oval leaf spots up to 1 cm long, at first usually brown, sometimes purplish, later forming white to grey centres, spots may coalesce and leaves wither. Glumes may be spotted, becoming velvety with sporulation. Infected seed is shrivelled and discoloured; coleoptiles bear lesions which can also occur on the roots of seedlings. GEOGRAPHICAL DISTRIBUTION: Widespread (CMI Map 92, ed. 3, 1966). Records not yet mapped: Angola, Cambodia, Chad, France (S.), French Polynesia, Hong Kong, Laos, Malawi, Nepal, Rhodesia. TRANSMISSION: Seed infection is important (mycelium remaining viable for up to 3 yr) and is probably responsible for most of the primary infection in young crops (9: 556; 34: 104). Grain is directly attacked and kernels in the flowering and milk stages are more susceptible than those in the soft dough and mature stages (45, 2834; 46, 317). Conidia are air-dispersed showing a diurnal periodicity with a max. in the late afternoon (43, 1017; 48, 3486).

Curtobacterium flaccumfaciens pv. poinsettiae. [Descriptions of Fungi and Bacteria].

1991 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
New York ◽  
New Zealand ◽  
Geographical Distribution ◽  
Vascular Tissue ◽  
Euphorbia Pulcherrima ◽  
Bacterial Canker ◽  
Distribution Map ◽  
Early Symptoms ◽  
Spray Inoculation ◽  
Water Splash

Abstract A description is provided for Curtobacterium flaccumfaciens pv. poinsettiae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Euphorbia pulcherrima. DISEASE: Bacterial canker of poinsettia. The early symptoms are usually watersoaked streaks on green stems. These may extend into petioles and leaves giving spots, blotches or defoliation, and downwards into the woody stem where it produces yellowing of the cortex and browning of vascular tissue. Golden brown bacterial ooze may be seen on ruptured stems and on leaf lesions. The disease is systemic and cuttings from infected stock plants may develop poorly or not at all. GEOGRAPHICAL DISTRIBUTION: New Zealand (N. Island), USA (Florida, New Jersey, New York, MD, Pennsylvania; also Alabama (40: 310)); possibly UK (isolated in 1984, but still regarded as non-indigenous) (IMI Distribution Map 550, ed. 1, 1982). TRANSMISSION: This disease is spread in infected cuttings and probably by water splash as infection can be artificially induced by spray inoculation without wounding (41: 604).

scholarly journals Similarity, Pattern, and Grouping of Soybean Fungal Diseases in the United States: Implications for the Risk of Soybean Rust

Plant Disease ◽  
2009 ◽  
Vol 93 (2) ◽  
pp. 162-169 ◽  
Author(s):  
X. Li ◽  
X. B. Yang
Keyword(s):  
United States ◽  
Downy Mildew ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
The United States ◽  
Fungal Diseases ◽  
Brown Spot ◽  
Soybean Rust ◽  
Yield Losses ◽  
Similarity Coefficients

Ten biological or ecological characteristics of pathogens/diseases were used to quantitatively describe 34 soybean (Glycine max) fungal diseases in the United States. These characteristics included optimal temperatures for disease development, host ranges, characteristics of disease cycle, and the pathogens' survival capacity. Gower's general similarity coefficients for pairs of diseases were determined and used in principal coordinate analysis (PCoA) to project the diseases into a two-dimensional space, in which significant patterns were identified for some of the characteristic variables, e.g., means of pathogen dispersal. Similarity coefficients indicated that soybean rust (Phakopsora pachyrhizi) resembled soybean downy mildew (Peronospora manshurica) and Leptosphaerulina leaf spot (Leptosphaerulina trifolii). Cluster analysis with multiscale bootstrapping identified two major clusters with high significance level (P > 0.95). In a loose cluster (P = 0.86), soybean rust was grouped with brown spot (Septoria glycines), frogeye leaf spot (Cercospora sojina), Phyllosticta leaf spot (Phyllosticta sojicola), purple seed stain (Cercospora kikuchii), downy mildew, and Leptosphaerulina leaf spot. Estimated soybean yield losses in the United States from 1996 to 2005 and the geographical distribution information of the diseases in this cluster implied that the potential geographical distribution range of soybean rust may include most U.S. soybean production regions and that yield losses would be light in the north but moderate in the south if environmental conditions are conducive.

Fusarium oxysporum f. sp. vasinfectum. [Descriptions of Fungi and Bacteria].

1992 ◽  
Author(s):  
D. Brayford
Keyword(s):  
South Africa ◽  
Puerto Rico ◽  
Glycine Max ◽  
Nicotiana Tabacum ◽  
Fusarium Oxysporum ◽  
Geographical Distribution ◽  
Central African Republic ◽  
Lupinus Luteus ◽  
Vascular Wilt ◽  
Wide Range

Abstract A description is provided for Fusarium oxysporum f. sp. vasinfectum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cotton (Gossipium spp., including G. hirsutum, G. barbadense, G. arboreum, G. herbaceum), Chinese lantern (Physalis alkekengi), lucerne (alfalfa) (Medicago sativa), lupin (Lupinus luteus), okra (Abelmoschus esculentus), soyabean (Glycine max), tobacco (Nicotiana tabacum). A wide range of other plants may also be infected without external symptoms (51, 2512). DISEASE: Vascular wilt. GEOGRAPHICAL DISTRIBUTION: Widespread (IMI map 362). Africa: Central African Republic, Congo, Egypt, Ethiopia, Israel, Madagascar, Republic of South Africa, Senegal, Somalia, Sudan, Tanzania, Uganda, Zimbabwe. America: Argentina, Brazil, Chile, Colombia, Guatemala, Mexico, Nicaragua, Paraguay, Peru, Puerto Rico, Salvador, St. Kitts-Nevis, St. Vincent, USA (south eastern states), Venezuela. Asia: Burma, China, India, Iran, Iraq, Pakistan, Taiwan, USSR. Europe: France, Greece, Italy, Romania, Yugoslavia. TRANSMISSION: The fungus is soil borne and may be transmitted by seed (11, 713; 32, 186) and in irrigation water (62, 4911).

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