Mortierella elongata. [Descriptions of Fungi and Bacteria].

Author(s):  
P. M. Kirk

Abstract A description is provided for Mortierella elongata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: From soil. DISEASE: None as a primary pathogen of plants; encountered as a saprobe. GEOGRAPHICAL DISTRIBUTION: Australia, Canada, China, Denmark, Germany, Italy, Japan, Malaysia, Mexico, Netherlands, New Zealand, Sweden, Taiwan, Uganda, UK, USA (Alaska, Georgia), former USSR. TRANSMISSION: Movement of soil, or water-borne dispersal of sporangiospores.

Author(s):  
P. M. Kirk

Abstract A description is provided for Mortierella polycephala. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: From soil. DISEASE: None as a primary pathogen of plants; encountered as a saprobe. GEOGRAPHICAL DISTRIBUTION: Belgium, China, France, Gibraltar, India, Japan, Netherlands, New Zealand, UK, Ukraine, former USSR. TRANSMISSION: Movement of soil, or water-borne dispersal of sporangiospores.


Author(s):  
P. M. Kirk

Abstract A description is provided for Gongronella butleri. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: From soil. DISEASE: None as a primary pathogen of plants; encountered as a secondary invader or as a saprobe. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Bangladesh, Brazil, Chile, Ghana, Honduras, Hong Kong, India, Italy, Malaysia, Mauritius, New Caledonia, New Zealand, Nigeria, South Africa, Sri Lanka, Taiwan, Trinidad, Uganda, Uraguay, UK, USA (Florida, Georgia, Iowa, Maryland, Nevada, New Jersey, New York, Ohio, Wisconsin), former USSR, Zambia. TRANSMISSION: Movement of soil, or water-borne dispersal of sporangiospores.


Author(s):  
P. M. Kirk

Abstract A description is provided for Mucor plumbeus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: From grain and soil. DISEASE: None as a primary pathogen of plants; encountered as a secondary invader or as a saprobe. GEOGRAPHICAL DISTRIBUTION: Algeria, Australia, Austria, Belgium, Canada, Chile, Costa Rica, Colombia, former Czechoslovakia, Denmark, Egypt, Finland, France, Germany, Greece, India, Indonesia, Iraq, Israel, Kenya, Libya, Malaysia, Netherlands, New Zealand, Nicaragua, Nigeria, Norway, Panama, Poland, Portugal, South Africa, Switzerland, Uganda, USA (California, New Jersey, New York, Michigan, Pennsylvania), former USSR, former Yugoslavia, Zaire, Zimbabwe. TRANSMISSION: Movement of soil, or water-borne dispersal of sporangiospores.


Author(s):  
P. M. Kirk

Abstract A description is provided for Mortierella alpina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: From soil. DISEASE: None as a primary pathogen of plants; encountered as a saprobe. GEOGRAPHICAL DISTRIBUTION: Australia, Canada, China, Corsica, Cyprus, Gibraltar, Hungary, India, Japan, Mexico, Netherlands, New Zealand, Pakistan, Spain, Sweden, UK, former USSR, USA (Alaska, Colorado, New York, North Carolina, Washington). TRANSMISSION: Movement of soil, or water-borne dispersal of sporangiospores.


Author(s):  
P. M. Kirk

Abstract A description is provided for Mortierella mutabilis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: From soil. DISEASE: None as a primary pathogen of plants; frequently encountered as a secondary invader or as a saprobe. GEOGRAPHICAL DISTRIBUTION: Australia, Austria, China, Germany, Netherlands, New Zealand, UK, USA (North Carolina). TRANSMISSION: Movement of soil, or water-borne dispersal of sporangiospores.


Author(s):  
C. Booth

Abstract A description is provided for Drepanopeziza ribis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Ribes spp. DISEASE: Causes leaf spot or anthracnose of currants and gooseberries. Symptoms consist of small, dark brown, round or irregular spots scattered over the leaf surface. They may coalesce if numerous. Infected leaves may turn yellow (especially in gooseberry) and fall. Minute greyish acervuli develop in lesions on upper and lower leaf surfaces. Lesions may also occur on petioles and peduncles, where they are elongated, and on fruit. GEOGRAPHICAL DISTRIBUTION: Europe, N. America, Japan, Australia and New Zealand (CMI Map 187, ed. 2, 1967). TRANSMISSION: By water-borne conidia produced from the Gloeosporidiella state on leaf lesions. Apothecia are produced from saprophytic growth on fallen diseased leaves and they produce air-borne ascospores in spring.


Author(s):  
B. C. Sutton

Abstract A description is provided for Mycocentrospora acerina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: A very wide host range (29, 364); parsley, celery, carrot and parsnip are among the most important economically. DISEASE: Pansy leaf spot; celery storage rot; root rot, canker and black crown rot of parsnip; liquorice rot of carrot. GEOGRAPHICAL DISTRIBUTION: Europe (UK, Ireland, Germany, Czechoslovakia, Netherlands, Poland, Rumania, USSR, Denmark); N. America (USA, Canada); Australia, New Zealand. TRANSMISSION By splash dispersed conidia; these are viable for short periods only (26, 133). Survival for longer periods is by infected debris and chlamydospores in the soil (23, 324; 45, 681; 52, 899). Water-borne spread is possible (49, 1526) and transmission on pansy seeds has been demonstrated (51, 422).


Author(s):  
C. V. Subramanian

Abstract A description is provided for Fusarium oxysporum f.sp. conglutinans. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Brassica oleracea (cabbage) and other Cruciferae: kale, Brussels sprouts, cauliflower, broccoli, kohlrabi, rutabaga, turnip, mustard, rape, Chinese cabbage, garden cress, stock, raddish. Armstrong & Armstrong (1952) consider the form infecting cabbage, raddish and stock as races of Fusarium conglutinans, however, Gordon (1965) recognizes these three as distinct formae speciales of Fusarium oxysporum, f.sp. conglutinans, f.sp. raphani Kendrick & Snyder and f.sp. mathioli Baker, respectively. DISEASES: Yellows of cabbage and other Cruciferae. GEOGRAPHICAL DISTRIBUTION: Africa (Congo, Cameroon, Rhodesia); Asia (China, Japan); Australasia (Australia, New Zealand); Europe (France, Netherlands, U.S.S.R.); N. America (U.S.A.); C. America and W. Indies (Cuba,? Trinidad); S. America (Brazil (Sao Paulo)) (CMI Map 54). TRANSMISSION: Soil-borne. Dissemination by means of soil on implements, transplants, surface drainage water and water-borne and wind-borne.


Author(s):  
E. Punithalingam

Abstract A description is provided for Selenophoma donacis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Agropyron, Arundo, Avena, Dactylis glomerata, Elymus, Hordeum, Panicum, Phalaris, Phleum pratense, Phragmites, Secale, Stipa and Triticum, and many cultivated and wild grasses. DISEASE: Causes halo spot of grasses and cereals. Pale oval spots, with a brown or purplish margin, are produced towards the tips and edges of leaves. The centre becomes greyish and is usually studded with rows of small, dark pycnidia. Lesions may coalesce and destroy large areas of leaf surface. GEOGRAPHICAL DISTRIBUTION: Australia, New Zealand, North America, northern Europe, Scandinavia. TRANSMISSION: Conidia are exuded in mucilaginous threads from pycnidia in wet weather and are water-borne. The fungus can also be transmitted on seed.


Author(s):  
A. Sivanesan

Abstract A description is provided for Cochliobolus cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cynodon dactylon (very common on this host), other Cynodon spp., Agropyron, Ammi, Arecastrum, Axonopus, Calathea, Chamaedorea, Chrysalidocarpus, Dactyloctenium, Eleusine, Hordeum, Ipomoea, Lycopersicon, Muhlenbergia, Oryza, Panicum, Pennisetum, Poa, Rhapis, Secale and Zea. DISEASE: Leafspot of Bermuda grass end other crops, leaf blight end brown patches of turf, lawns end golflinks. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Bangladesh, Brazil, Brunei, Egypt, Ghana, Guinea, India, Israel, Iraq, Italy, Japan, Kenya, Malaysia, New Zealand, Pakistan, Papua New Guinea, Puerto Rico, Spain, South Africa, Sudan, Tanzania, Trinidad, Turkey, USA, USSR, Venezuela, Yugoslavia and Zambia. TRANSMISSION: By wind-borne conidia and seed-borne.


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