Rhizopus oryzae. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
J. A. Lunn
Keyword(s):  
Sugar Beet ◽  
Geographical Distribution ◽  
Experimental Infection ◽  
Root Rot ◽  
World Wide ◽  
Rhizopus Oryzae ◽  
Soft Rot ◽  
Vascular Involvement ◽  
Sweet Potatoes ◽  
Diabetic Rabbits

Abstract A description is provided for Rhizopus oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: In air, soil, compost, and pathogenic for plants, man and other warm blooded animals. DISEASE: Plants: Often in association with R. stolonifer or other fungi, causes pale brown soft rot of fruit, vegetables and bulbs, especially rot of sweet potatoes (Harter et al., 1921; Lauritzen & Harter, 1925; 52, 4179 (as R. nodosus)), root rot of sugar beet (Hildebrand & Koch, 1943; Gaskill & Seliskar, 1952; 52, 1718) and seed-bed losses in groundnuts (Gibson & Clinton, 1953). Also, again in association as above, causes storage rot of many plant products (53, 99) including soyabean seed (54, 1959). Man and animals: Cause of rhinocerebral phycomycosis, sometimes with ocular or vascular involvement in man, particularly diabetics (RMVM 6, 504, 3028; 5, 1426; 8, 2113; 9, 2410). Also reported from bovine mycotic abortion (Nicolet et al., 1966) and from mycotic pneumonia in chicks (RMVM 7, 1861). Has been used in experimental infection of mice, thyroidectomized rats (RMVM 6, 2119) and alloxan-diabetic rabbits (RMVM 7, 2628). GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: By air-borne sporangiospores.

Rhizopus oryzae. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
A. K. Sarbhoy
Keyword(s):  
Sugar Beet ◽  
Geographical Distribution ◽  
World Wide ◽  
Rhizopus Oryzae ◽  
Fatal Case ◽  
Sweet Potatoes ◽  
Cerebral Infection

Abstract A description is provided for Rhizopus oryzae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: In soil and compost and also pathgenic for plants and man (causing mycoses). DISEASES: Plants: Causing a rot of sweet potatoes (Harter et al., 1921; Lauritzen & Harter, 1925), sugar-beet (Hildebrand & Koch; 1943, Gaskill & Saliskar, 1962) and seed-bed losses in groundnuts (Gibson & Clinton, 1953). Man. A cause of phycomycosis (syn. 'mucormycosis'); see Emmons et al. (1963, p. 194). Cerebral infection is not uncommon (RMVM 2, 1627, 1628, 2148) and a fatal case of rhinocerebral infection has been fully described by La Touche et al. (RMVM 4, 2028; 5, 390). GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: By air-borne sporangiospores.

Rhizopus stolonifer. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
J. A. Lunn
Keyword(s):  
Geographical Distribution ◽  
Plant Material ◽  
Mycelial Growth ◽  
World Wide ◽  
Soft Rot ◽  
Fruit And Vegetables ◽  
Rhizopus Stolonifer ◽  
Sweet Potatoes ◽  
Pathogenic Organism

Abstract A description is provided for Rhizopus stolonifer. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On soil, fruit and vegetables and decaying plant material, and associated with disorders of man and animals. DISEASE: Causes a wet, pale brown soft rot of many fruit and vegetables. Particularly severe in storage on sweet potatoes, peaches and strawberries. Known as 'whiskers' because of profuse mycelial growth or 'leek' because of soft watery rot. Mildly parasitic to maturing fruit before they are harvested but primarily a wound invading fungus. It is reported as poisoning man (RMVM 6, 1831) and cattle (RMVM 6, 2161) and, experimentally, rats (RMVM 6, 1831). This species has been reported from various phycomycoses of man (RMVM 7, 1885, 3081, 4440; 11, 406), from bovine mycotic abortion (RMVM 6, 2145) and is reported to be experimentally pathogenic to rabbits (RMVM 7, 4027). However, doubt is cast on the role of R. stolonifer as a pathogenic organism in warm-blooded animals as it does not grow at 37°C. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: By air-borne sporangiospores and also by fruit flies (Drosophila melanogaster) associated with decaying fruits (43, 576).

Mucor racemosus. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
J. A. Lunn
Keyword(s):  
Geographical Distribution ◽  
World Wide ◽  
Fruit And Vegetables ◽  
Mucor Racemosus ◽  
Soil Animal ◽  
Sweet Potatoes ◽  
Pathogenic Organism

Abstract A description is provided for Mucor racemosus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On soil, animal droppings, air, stored fruit and vegetables and associated with disorders of man and animals. DISEASE: Plants: Causes a spongy storage rot of various vegetables and fruit, e.g. sweet potatoes, potatoes and citrus, when kept at temperatures below 7°C (Chupp & Sherf, 1960). Man and animals: There are reports from bovine mycotic abortion (Austwick & Venn, 1962), avian pulmonary phycomycosis (RMVM 8, 596) and from skin in disease of guineapig (RMVM 7, 2000). However, doubt is cast on the role of M. racemosus as a pathogenic organism in warm blooded animals as it does not grow at 37°C. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: By air-borne sporangiospores.

Phytophthora nicotianae. [Descriptions of Fungi and Bacteria].

1994 ◽  
Author(s):  
G. Hall
Keyword(s):  
Surface Water ◽  
Nicotiana Tabacum ◽  
Geographical Distribution ◽  
Root Rot ◽  
World Wide ◽  
Phytophthora Nicotianae ◽  
Fruit Rot ◽  
Tomato Root ◽  
Ornamental Crops ◽  
The Tropics

Abstract A description is provided for Phytophthora nicotianae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Principally Lycopersicon esculentum, Nicotiana tabacum, Capsicum annuum and Citrus sp. A very large number of other agricultural and ornamental crops, both temperate and tropical, are also affected, including avocado, strawberry, pineapple, papaya, guava, eggplant and durian. DISEASE: Blackshank of tobacco, buckeye of tomato, root and fruit rot of capsicum, root rot of citrus. GEOGRAPHICAL DISTRIBUTION: World-wide, but particularly common in the tropics and sub-tropics. TRANSMISSION: By zoospores in surface water and rainsplash. Chlamydospores (and oospores, when formed) act as perennating structures.

Penicillium expansum. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
A. H. S. Onions
Keyword(s):  
Geographical Distribution ◽  
Organic Material ◽  
Wounds And Injuries ◽  
World Wide ◽  
Brown Rot ◽  
Soft Rot ◽  
Penicillium Expansum ◽  
Cereal Products ◽  
Blue Mould

Abstract A description is provided for Penicillium expansum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Found commonly in soil and in a wide variety of organic material including grains and cereal products, and though generally isolated from mouldy fruit, particularly apples, it also occurs on other pomaceous fruit, cherries, grapes, olives, pineapple and sometimes on citrus and avocado (Raper & Thom 1949, 518-522, & Herb. IMI). DISEASE: Blue mould (soft rot) of apple is characterized by the formation of watery, light or yellowish brown areas on the fruit, which may originate from either the stem or calyx ends. A soft brown rot develops which rapidly destroys the whole fruit. Later, under humid conditions, tufts of massed conidiophores with blue-green conidia appear on the surface of the fruit which gives off a characteristic musty odour. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: By air and soil-borne spores, especially in orchards. The pathogen commonly enters through wounds and injuries but may also penetrate lenticels (11: 658).

Phytophthora cinnamomi. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
G. M. Waterhouse
Keyword(s):  
Geographical Distribution ◽  
Root Rot ◽  
World Wide ◽  
Phytophthora Cinnamomi ◽  
Infested Soil ◽  
High Moisture ◽  
High Moisture Level ◽  
English Walnut ◽  
Fallen Fruit ◽  
Variable Water

Abstract A description is provided for Phytophthora cinnamomi. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Ananas, Cinchona, Cinnamomum, Castanea, Erica, Persea, Pinus, Rhododendron, and over 100 othor host species including beech, oak, walnut, conifers, avocado, pineapple, cinnamon, Erica, rhododendron, Lawson cypress, English walnut, Irish yew, Douglas fir (Thorn & Zentmyer, 1954, Rangaswami, 1962 and Herb. IMI). DISEASES: Causes 'ink' disease of chestnut in conjunction with P. cambivora and also root rot of many other trees, beech, oak, walnut and conifers, both in the nursery and forest, avocado root rot, pineapple root and heart rot, stripe canker of cinnamon, Erica wilt, root rot of rhododendron and many other ornamentals. GEOGRAPHICAL DISTRIBUTION: World-wide. (CMI Map 302, ed. 2, 1963.) TRANSMISSION: Soil-borne. Persisting up to 10 yr. in naturally infested soil planted with macadamia and avocado seedlings, and remaining viable in dead avocado roots stored in soil for 6 yr. at 20% moisture at 20°C. (Zentmyer & Mircetich, 1963). Soil maybe penetrated to a depth of 2-4 feet (34: 4). Movement of nursery plants with infested soil adhering to their roots may also spread the pathogen (3: 245). Soils with poor drainage and a high moisture level or variable water table favour the pathogen (45, 3027; 42: 162; 34: 4) and zoospores may be disseminated by movement of soil water (41: 490; 43, 2753). Phytophthora cinnamomi may also be seed-borne in seed derived from wind-fallen fruit which has become infected from contact with infested soil (Durbin et al., 1957).

Erwinia carotovora var. carotovora. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Geographical Distribution ◽  
Plant Material ◽  
World Wide ◽  
Erwinia Carotovora ◽  
Soft Rot ◽  
Natural Soil ◽  
Bacterial Soft Rot ◽  
Running Water ◽  
Small Water ◽  
Rain Splash

Abstract A description is provided for Erwinia carotovora var. carotovora. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On a wide variety of plants affecting particularly their fleshy parts. Elliott (31: 105) lists species belonging to 44 genera as hosts. DISEASE: Bacterial soft rot, a rapidly progressing soft wet rot. The first sign is usually a small water-soaked area, which rapidly enlarges, the tissue becoming soft. In favourable conditions the whole infected organ may become a rotten mass in a few days. GEOGRAPHICAL DISTRIBUTION: World wide. TRANSMISSION: The bacteria are likely to be present in any natural soil in which there is decaying plant material. They can be transmitted by many different methods, including, rain splash, running water, insects, tools, hands and clothing of workers, machinery, in air-borne particles and aerosols. They may possibly be carried with seed in the attached debris, but this is unhkely to be important in normal agriculture. The organism requires a wound to gain entry, and usually a weakened or sickly plant if the rot is to proceed in the growing plant. Most healthy growing plants are able to exclude the bacteria by laying down corky tissue in response to the wounding.

Pezizella oenotherae. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
B. C. Sutton
Keyword(s):  
Geographical Distribution ◽  
Root Rot ◽  
World Wide ◽  
Dianthus Caryophyllus ◽  
Fruit Rot ◽  
Acer Pseudoplatanus ◽  
Fragaria Vesca ◽  
Strawberry Fruit ◽  
Paeonia Suffruticosa ◽  
Epilobium Angustifolium

Abstract A description is provided for Pezizella oenotherae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Acer pseudoplatanus, Ampelopsis, Calluna, Castanea, Cercis, Cornus, Dianthus caryophyllus, Dissotis paucistellata, Duchesnia, Epilobium angustifolium, Eucalyptus robusta, E. saligna, Fagus sylvatica, Fragaria vesca, Gaultheria, Gaura, Hicoria, Jambosa, Lythrum, Nyssa, Oenothera, Paeonia suffruticosa, Pelargonium, Populus, Potentilla, Prunus, Quercus, Rhododendron, Rhus, Ribes, Rosa sentifolia, Rubus, Salix, Smilax, Ulmus, Vitis. DISEASE: Black lesion root rot of strawberry, strawberry fruit rot, strawberry leaf spot. GEOGRAPHICAL DISTRIBUTION: World wide. Europe (UK, Germany, Cyprus); Africa, (Malawi, Guinea, Zambia); N. America (USA, Canada); Asia (India, Singapore, Korea, Malaysia, Israel); Australia, New Zealand.

Fusarium equiseti. [Descriptions of Fungi and Bacteria].

1978 ◽  
Author(s):  
C. Booth
Keyword(s):  
Geographical Distribution ◽  
Root Rot ◽  
Vigna Radiata ◽  
World Wide ◽  
Phaseolus Aureus ◽  
Seedling Blight ◽  
Fusarium Equiseti ◽  
Stalk Rot ◽  
Wide Range ◽  
Tuber Rot

Abstract A description is provided for Fusarium equiseti. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Fusarium equiseti has been isolated from a wide range of hosts, especially tropical hosts belonging to the following genera: Agave, Allium, Apium, Arachis, Beta, Brassica, Cajanus, Carica, Chrysanthemum, Cicer, Citrullus, Citrus, Cocos, Coffea, Cola, Crotalaria, Cucumis, Cucurbita, Cupressus, Daucus, Dianthus, Elaeis, Eucalyptus, Ficus, Fragaria, Glycine, Gossypium, Helianthus, Hevea, Hordeum, Linum, Luffa, Lycopersicon, Macadamia, Mangifera, Manihot, Musa, Nicotiana, Oryza, Panicum, Papaver, Pennisetum, Phaseolus, Pinus, Pisum, Prunus, Pyrus, Rosa, Solanum, Sorghum, Theobroma, Trifolium, Triticum, Vicia, Vigna, Zea, Zingiber; also widespread in soil. DISEASE: Pathogenic to cucurbits and avocado (54, 2536; 52, 2674; 50, 3350). Causes tuber rot of Cycas (54, 168) and stalk rot of maize (54, 4915). Also isolated from diseased Piper (52, 1993) and mung bean (Phaseolus aureus[Vigna radiata], 50, 397). Pathogenic to cereals during seedling stage (56, 3493) and also causing root rot (56, 2487). GEOGRAPHICAL DISTRIBUTION: World wide; very frequent in tropical and subtropical areas but occurs also in temperate regions. TRANSMISSION: Infection and stalk rot of maize caused by F. equiseti appears to be by air-borne spores (54, 4915) although in most occurrences wounding or damage to the host appears to be necessary for infection (53, 4642). Infected soil may cause seedling blight (50, 1397).

Pleospora bjorlingii. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
C. Booth
Keyword(s):  
Sugar Beet ◽  
South Asia ◽  
Geographical Distribution ◽  
Root Rot ◽  
Host Material ◽  
Soil P ◽  
Black Leg ◽  
Leaf Rot

Abstract A description is provided for Pleospora bjorlingii[Pleospora betae]. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Beta spp. DISEASE: Black leg of sugar beet and mangold. Also root rot and leaf rot or heart rot (45, 1243), storage decay (41: 188) and clamp rots (45, 2655). GEOGRAPHICAL DISTRIBUTION: Africa (north & south); Asia, Australasia, Europe, N. America. (CMI Map 427, Ed. 1, 1967). TRANSMISSION: On seeds and in decayed host material or soil.

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