Fusarium flocciferum. [Descriptions of Fungi and Bacteria].

Author(s):  
D. Brayford

Abstract A description is provided for Fusarium flocciferum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Isolated from soil. Also occurs on the roots of a wide range of plants, including temperate cereals (Hordeum, Triticum), legumes (Lupinus, Pisum, Vicia), cucurbits (Cucumis sativus), and others such as carrot (Daucus carota) and beet (Beta vulgaris); sometimes occurs in association with nematodes. DISEASE: Not regarded as an aggressive pathogen, but in association with nematodes may cause root lesions, damping-off, root, tuber or bulb rots. Reported to cause disorders of cultivated mushroom beds. Occasionally causes skin infections of animals (one IMI record from crocodile's tail). GEOGRAPHICAL DISTRIBUTION: Widespread but infrequent, apparently more common in temperate regions. Reported from Asia: Bhutan, China, India, Iran, Turkey; Australasia: New Zealand; Europe: Denmark, Germany, The Netherlands, Poland, Turkey (W), UK; North America: Canada, USA. TRANSMISSION: Conidia are dispersed locally by water flow and splash droplets. Chlamydospores may be transported by movement of soil or infected plant debris. It may also be seed-borne (71, 1568).

Author(s):  
M. A. Spencer

Abstract A description is provided for Pythium spinosum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASES: Seedling damping-off. HOSTS: Wide range of plant hosts. GEOGRAPHICAL DISTRIBUTION: AFRICA: South Africa. NORTH AMERICA: Canada, USA (Florida, Hawaii, Iowa). SOUTH AMERICA: Argentina. ASIA: China (Zhejiang), India, Japan, Korea, Taiwan. AUSTRALASIA: Australia (Queensland), New Zealand. EUROPE: France, Germany, Great Britain, Italy, Netherlands. TRANSMISSION: Contaminated soil, organic matter (oospores) and water (sporangia).


Author(s):  
J. E. M. Mordue

Abstract A description is provided for Ustilago hypodytes. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: A wide range of grasses, including species of Agropyron (many), Ammophila, Brachypodium, Bromus, Calamagrostis, Diplachne, Distichlis, Elymus (many), Festuca, Glyceria, Hilaria, Hordeum, Haynaldia, Lygeum, Melica, Orysopsis, Panicum, Phalaris, Phleum, Poa (many), Puccinellia, Secale, Sitanion, Sporobolus, Stipa (many), and Trisetum. DISEASE: Stem smut of grasses. GEOGRAPHICAL DISTRIBUTION: Chiefly a temperate species found in Europe (including Denmark, Finland, France, Germany, Hungary, Italy, Romania, Sweden, Switzerland, UK, USSR, Yugoslavia) and North America (Canada, USA) and extending to central and South America (Argentina, Peru, Uruguay), N. Africa (Libya, Morocco, Tunisia), Japan, Australia and New Zealand. TRANSMISSION: Not fully understood, though inoculation experiments have demonstrated that infection occurs in mature vegetative plants (possibly through meristematic tissue), not seeds or flowers (22, 240; 24, 511). Once established, infection is systemic, probably overwintering in the root system and spreading by vegetative multiplication of host plants as well as from plant to plant (24, 511; 19, 720).


Author(s):  
T. V. Andrianova

Abstract A description is provided for Septoria antirrhini. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot, leaf drying, defoliation. HOSTS: Antirrhinum antirrhiniflorum, A. majus, A. siculum (Scrophulariaceae). GEOGRAPHICAL DISTRIBUTION: AFRICA: South Africa. NORTH AMERICA: Canada, USA. SOUTH AMERICA: Chile, Colombia. ASIA: Armenia, Azerbaijan, China, Iran, Israel. AUSTRALASIA: Australia, New Zealand. EUROPE: Bulgaria, Czech Republic, Estonia, France, Germany, Great Britain, Hungary, Ireland, Italy, Netherlands, Portugal, Romania, Ukraine, former Yugoslavia. TRANSMISSION: Not reported, but almost certainly by airborne, splash-dispersed conidia from infected plant debris and seed stocks. The disease is significantly more severe under wet weather conditions (SINADSKIY et al., 1985).


Author(s):  
G. M. Waterhouse

Abstract A description is provided for Pythium intermedium. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On a wide range of hosts represented by the following families: Begoniaceae, Bromeliaceae, Chenopodiaceae, Compositae, Coniferae, Cruciferae, Euphorbiaceae, Geraniaceae, Gramineae, Leguminosae, Liliaceae, Linaceae, Moraceae, Onagraceae, Ranunculaceae, Rosaceae, Solanaceae, Ulmaceae, Violaceae; also in the Equisetales and Filicales. DISEASES: Damping-off of seedlings, foot rot and root rot of ornamentals, occasionally of crop plants and trees. GEOGRAPHICAL DISTRIBUTION: Asia (China); Australia & Oceania (Hawaii); Europe (England, Belgium, France, Germany, Holland, Sweden, U.S.S.R.); North America (U.S.A.); South America (Argentina). TRANSMISSION: A common soil inhabitant.


Author(s):  
J. E. M. Mordue

Abstract A description is provided for Entyloma serotinum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Symphytum spp., including S. asperrimum, S. bulbosum, S. cordatum, S. officinale, S. ottomanum and S. tuberosum; Borago officinalis; also recorded on Amsinckia, Lappula and Mertensia spp. (in USA) and Pulmonaria (in Europe, but see 64, 4163). DISEASE: Leaf spot of Symphylum, less frequently (though with similar symptoms) of other members of the Boraginaceae.GEOGRAPHICAL DISTRIBUTION: Africa: Algeria. Asia: Israel, USSR (Republic of Georgia). Australasia: New Zealand. Europe: widespread, including Austria, British Isles, Czechoslovakia, Denmark, France (including Corsica), Germany, Hungary, Italy, Netherlands, Poland, Portugal, Romania, Spain, Switzerland, USSR (Latvia), Yugoslavia. North America: USA. TRANSMISSION: Ustilospores survive on infected plant remains and in soil, and germinate to infect seedlings and the new seasons's leaves. In Europe conidia may also over-winter and initiate new infections in spring (Kaiser, 1936). During the growing season, conidia are disseminated by air currents and water-splash.


Author(s):  
P. M. Kirk

Abstract A description is provided for Arthrinium phaeospermum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agropyron, Ammophila, Anona, Araucaria, Arundinaria, Arachis, Argemone, Arrhenatherum, Arundo, Bambusa, Brassica, Bromus, Calamagrostis, Carex, Cocos, Citrus, Cladium, Coelogyne, Coffea, Cortaderia, Cratueva, Dactylis, Dendrocalamus, Dioscorea, Eleusine, Elymus, Fagus, Fragaria, Glyceria, Gynerium, Hedera, Hordeum, Justicia, Lens, Liriope, Lycopersicon, Magnolia, Malus, Maranta, Musa, Nicotiana, Oryza, Panicum, Persea, Phalaris, Phaseolus, Pinus, Pisum, Phragmites, Phyllostachys, Picea, Pinus, Piper, Prunus, Psamma, Pteridium, Ranwolfia, Saccharum, Smilax, Solanum, Sorghum, Tectona, Theobroma, Trifolium, Triticum, Valeriana, Vigna, Vitis, Zea; also from air, animals (including man), soil and plant debris, straw, silage and wood. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader (of potato tubers) or as a saprophyte. GEOGRAPHICAL DISTRIBUTION: AFRICA: Algeria, Kenya, Malawi, Nigeria, Sierra Leone, South Africa Spain (Canary Islands), Sudan, Tanzania, Zambia, Zimbabwe. ASIA: Bangladesh, Bhutan, Hong Kong, India, Iraq, Japan, Nepal, Pakistan, Malaysia (Peninsular Malaysia), Philippines, Thailand. AUSTRALASIA & OCEANIA: Australia, Guadalcanal, New Zealand. EUROPE: Cyprus, Eire, Germany, Greece, Netherlands, Portugal, Spain, Sweden, Turkey, UK. NORTH AMERICA: Canada, USA. SOUTH AMERICA: Argentina. TRANSMISSION: By unknown means.


Author(s):  
J. E. M. Mordue

Abstract A description is provided for Entyloma calendulae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Calendula officinarum, also C. aegyptiaca, C. algeriensis, C. arvensis, C. persica. DISEASE: Leaf spot of Calendula. GEOGRAPHICAL DISTRIBUTION: Widely distributed in Europe including Scandinavia and USSR (Latvia); around the Mediterranean (Algeria, Israel, Tunisia, Turkey); North America (USA), South America (Argentina, Chile, Uruguay); Australia (New South Wales, Western Australia), New Zealand. TRANSMISSION: Ustilospores survive on infected plant remains in soil and germinate to infect the new crop. Overwintering on self-sown seedlings is also possible.


Author(s):  
I. A. S. Gibson

Abstract A description is provided for Dilophospora alopecuri. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On culms, flowering shoots and leaves of grasses and cereals (wheat, oats, rye, barley). DISEASE: Twist of grasses. GEOGRAPHICAL DISTRIBUTION: Europe, Asia (India, Iraq, Pakistan), N. America (Canada, USA), Australia and New Zealand. TRANSMISSION: By splash-dispersed air-borne conidia during the growing season. Perennation by infected plant debris, soil and seed. Observations in the Netherlands (4, 140) and Russia (32, 415) led to the belief that nematodes (Anguillulina spp.) were important vectors of the fungus, but evidence elsewhere shows that this is unlikely (8, 300; 13, 20; 14, 296).


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):  
T. V. Andrianova

Abstract A description is provided for Septoria lepidii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf mortality. Clearly-defined leaf spots are not produced. Instead the whole leaf becomes discolored, turning pale brown or fawn, with the discoloration spreading from infection sites. Conidiomata are then produced as the whole leaf dies. HOSTS: Cardaria draba, C. propinqua, C. pubescens, C. repens (syn. : Lepidium repens), Lepidium affine, L. campestre, L. heterophyllum, L. latifolium, L. officinale, L. perfoliatum, L. sativum, L. sibiricum, L. smithii, L. vesicatorium (Brassicaceae). [Type host -L. heterophyllum.] GEOGRAPHICAL DISTRIBUTION: Asia: Armenia, Azerbaijan, Republic of Georgia, Iran, Kazakhstan, Kirghizistan, Russia (West Siberia), Tadzhikistan, Turkmenistan, Uzbekistan. Europe: Austria, Belgium, Denmark, Estonia, France, Germany, Ireland, Italy, Hungary, Moldova, Netherlands, Portugal, Romania, Russia, Spain, UK, Ukraine, former Yugoslavia. North America: USA. TRANSMISSION: Not reported, but almost certainly by air-borne or splash dispersed conidia, also from infected plant débris.


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