Laetiporus sulphureus. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
G. C. A. van der Westhuizen
Keyword(s):  
Geographical Distribution ◽  
World Wide ◽  
Thin Sheets ◽  
Laetiporus Sulphureus ◽  
White Mycelium ◽  
Warm Temperate

Abstract A description is provided for Laetiporus sulphureus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On trunks, stumps and logs of Abies, Acer, Castanea, Celtis, Eucalyptus, Fraxinus, Cletitsia, Juglans, Larix, Liriodendron, Olea, Picea, Pinus, Prunus, Pseudotsuga, Quercus, Robinia, Schinus, Tamarix, Tsuga and Ulmus. DISEASE: Severe red-brown, cubical heart rot with thin sheets of white mycelium present in the cracks. Hyphae are present in the cells some distance beyond the visible signs of attack. GEOGRAPHICAL DISTRIBUTION: World wide in cool and warm temperate regions. TRANSMISSION By air-borne spores.

Erysiphe cruciferarum. [Descriptions of Fungi and Bacteria].

1970 ◽  
Author(s):  
T. J. Purnell
Keyword(s):  
Powdery Mildew ◽  
Geographical Distribution ◽  
World Wide ◽  
Erysiphe Cruciferarum ◽  
White Mycelium

Abstract A description is provided for Erysiphe cruciferarum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Chiefly on members of the Cruciferae but also reported on Papaveraceae (Junell, 1961). DISEASE: Powdery mildew of swedes and tumips. The first signs of mildew consist of small patches of a thin white mycelium arising at various places on the leaf, often appearing first on the under surface. These soon merge forming larger areas of mycelium. The leaves of the swede, B. napus, may support heavy mildew growth for many weeks before they become chlorotic and die. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Wind-borne conidia. The method of ovewintering is uncertain but myelium may be able to survive on winter Brassica spp. in the form of 'subinfections' (Searle, 1919).

Beauveria bassiana. [Descriptions of Fungi and Bacteria].

1979 ◽  
Author(s):  
B. L. K. Brady
Keyword(s):  
Geographical Distribution ◽  
Beauveria Bassiana ◽  
Lymantria Dispar ◽  
Laboratory Tests ◽  
World Wide ◽  
Nasal Swab ◽  
Wild Rodents ◽  
Colorado Beetle ◽  
Porthetria Dispar ◽  
New Skin

Abstract A description is provided for Beauveria bassiana. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS & SUBSTRATA: All stages of insects of all groups; lungs of wild rodents, nasal swab of horse; man; giant tortoise. The fungus overwinters in vegetable matter and is found in the soil. DISEASE: The fungus has been known since 1835 as the cause of the muscardine disease of silkworms. Although B. bassiana has multiplied in bees in laboratory tests it has so far not been recorded from bees in nature (Bailey, 1971). According to Wasti & Hartman (1975) penetration of the cuticle of gypsy moth (Porthetria dispar[Lymantria dispar]) larvae takes place 24 h after 2nd instar larvae have crawled over a culture of B. bassiana and within 64h the interior of the insect is completely filled with hyphae. These authors also note penetration of the gut wall. Fargues & Vey (1974), who sprayed conidia on to 3rd instar larvae of Leptinostarsa decemlineata (Colorado beetle), showed that conidia germinate on the surface of the integument, penetrate the loosening skin, and blastospores develop in the moulting fluid, infecting the new integument as it forms. Some individuals cannot finish the moult, in others the delicate new skin ruptures and hyphae enter the haemolymph. GEOGRAPHICAL DISTRIBUTION: World wide.

Eurotium rubrum. [Descriptions of Fungi and Bacteria].

1995 ◽  
Author(s):  
Z. Kozakiewicz
Keyword(s):  
Host Range ◽  
Geographical Distribution ◽  
World Wide ◽  
Human Nails

Abstract A description is provided for Eurotium rubrum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: A xerotolerant species with the same host range as E. repens (IMI Sheet 1255). DISEASES: Not known to be a pathogen of animals or man, but the species has been isolated from human nails (Smith, 1989). GEOGRAPHICAL DISTRIBUTION: World-wide.

Cunninghamella echinulata. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
A. K. Sarbhoy
Keyword(s):  
Geographical Distribution ◽  
World Wide ◽  
Cucurbita Pepo ◽  
Cucurbita Maxima ◽  
Tropical Countries ◽  
Cunninghamella Echinulata

Abstract A description is provided for Cunninghamella echinulata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On decaying flowers of Cucurbita pepo, dung and soil. DISEASE: Reported pathogenic to Spanish pumpkin (Cucurbita maxima) at Chandigarh and neighbouring villages in the Punjab, India by Grover (1965). Symptoms recognizable when the flowers begin to die off gradually. Diseased flowers do not open properly. Infected flowers are covered with the cottony mycelium of the pathogen and infected fruits may become detached from the plant and continue to rot on the soil. Leaves and stalks are also frequently infected. GEOGRAPHICAL DISTRIBUTION: World-wide (mostly tropical countries). TRANSMISSION: Air borne; may survive in fragments of mummified pumpkin fruit up to 32 months.

Rhizopus stolonifer. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
A. K. Sarbhoy
Keyword(s):  
Drosophila Melanogaster ◽  
Sweet Potato ◽  
Geographical Distribution ◽  
Ipomoea Batatas ◽  
World Wide ◽  
Rhizosphere Soil ◽  
Fruit Flies ◽  
Fruit Rot ◽  
Rhizopus Stolonifer ◽  
Artocarpus Integrifolia

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 fruits: papaya, plum, strawberry, sweet potato, cotton, groundnuts and in rhizosphere soil of various plants, soil and decaying leaves. DISEASE: Causing fruit rot of plum, Jak fruit (Artocarpus integrifolia[Artocarpus integer]), strawberry ('leak'), peach and a rot of sweet potato (Ipomoea batatas) and cotton bolls. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Air-borne and also by fruit flies, Drosophila melanogaster, associated with decaying fruit (RAM 43, 576).

Erysiphe pisi. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. N. Kapoor
Keyword(s):  
Powdery Mildew ◽  
Geographical Distribution ◽  
Lens Culinaris ◽  
World Wide ◽  
Erysiphe Pisi ◽  
Lens Esculenta

Abstract A description is provided for Erysiphe pisi. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Papilionaceae, chiefly on Pisum, Dorcynium, Medicago and Vicia; also on Lupinus spp., Lens esculenta[Lens culinaris], Trifolium dubium and? Astragalus alpinus (Blumer, 1967). DISEASE: Powdery mildew of pea. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Internally seed borne (15: 338).

Septoria apiicola. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
B. C. Sutton
Keyword(s):  
Late Blight ◽  
Geographical Distribution ◽  
Irrigation Water ◽  
Leaf Spot ◽  
World Wide ◽  
Host Tissue ◽  
Variable Size ◽  
Infected Seed ◽  
Seedling Roots ◽  
Rain Splash

Abstract A description is provided for Septoria apiicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Apium spp. DISEASE: Leaf spot (or late blight) of cultivated and wild celery and celeriac. On leaves, seeds and seedling roots, reducing yield and causing wastage through blemishes on the edible petioles. Leaf lesions of variable size, 1-6 mm diam., abundant, amphigenous, circular or sometimes vein-limited, confluent when severe, becoming depressed pale brown, margin diffuse. GEOGRAPHICAL DISTRIBUTION: World-wide on Apium spp. TRANSMISSION: Seed-borne (Noble et al., 1958; Sheridan, 1966). Also disseminated by rain-splash, in irrigation water, by contact as well as by animals and workman's tools (Chupp & Sherf, 1960). The pathogen may remain viable in the soil for 18 months in buried celery crop refuse, but for less than 6 weeks in the absence of intact host tissue (42: 82). Viability in infected seed may drop to 2% within 8 months from harvest and both mycelium and conidia can stay alive in seed stored up to 14 months (42: 508; 44, 1332) but not beyond 2 yr.

Penicillium purpurogenum. [Descriptions of Fungi and Bacteria].

1992 ◽  
Author(s):  
Z. Kozakiewicz
Keyword(s):  
Organic Matter ◽  
Geographical Distribution ◽  
World Wide ◽  
Penicillium Purpurogenum

Abstract A description is provided for Penicillium purpurogenum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Although primarily a soil species, it is common on cereals (Pitt, 1980). DISEASES: On animals: The species has been implicated in mouldy corn toxicosis in swine, cattle and poultry and hepatitis-x in dogs (Beuchat, 1987). GEOGRAPHICAL DISTRIBUTION: World-wide, primarily as a soil species, but it is also found on organic matter.

Microsphaera penicillata. [Descriptions of Fungi and Bacteria].

1968 ◽  
Author(s):  
K. G. Mukerji
Keyword(s):  
North America ◽  
Powdery Mildew ◽  
Geographical Distribution ◽  
World Wide ◽  
Late Summer ◽  
Erysiphe Pisi ◽  
Temperature And Humidity ◽  
Young Leaves ◽  
Dry Seasons

Abstract A description is provided for Microsphaera penicillata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On species of Alnus, Betula, Syringa, Lathyrus, sweet peas and numerous other hosts (Saknon, 1900; Stevens, 1925; 39: 739; 41: 175) DISEASES: Powdery mildew of alder and lilac. Forms a white to grey floury appearance on the surface of broad leaves of many hard wood trees. It is more prevalent on sweet peas than Erysiphe pisi (CMI Descript. 155) in North America in spring when temperature and humidity are fluctuating. The foliage may be malformed, dropping prematurely or drying out and shrivelling. It is also prevalent on lilac in late summer and autumn, sometimes in dry seasons almost completely covering the foliage, but generally too late in the season to cause serious damage. Young leaves are more susceptible. GEOGRAPHICAL DISTRIBUTION: World-wide on alder and lilac and occasionally occurring on numerous other hosts. Distributed generally in North America and Europe, also reported from Chile, China, India and Japan (Salmon, 1900, 39: 739; 41: 175). TRANSMISSION: Spores wind borne.

Heterobasidion annosum. [Descriptions of Fungi and Bacteria].

1968 ◽  
Author(s):  
D. N. Pegler
Keyword(s):  
Seed Germination ◽  
Geographical Distribution ◽  
World Wide ◽  
Surface Soil ◽  
Heterobasidion Annosum ◽  
Coniferous Trees ◽  
Tissue Paper ◽  
Butt Rot ◽  
Disease Free

Abstract A description is provided for Heterobasidion annosum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On coniferous trees, particularly Picea, Larix, Thuja, Tsuga; also less commonly on numerous dicotyledonous hosts (Koenigs, 1960). DISEASE: Butt-rot. Causing decay to roots and heart wood of living trees. A tissue-paper-like layer of mycelial felt, forming between the bark and wood, is lilac, pink or purple at first, but later turns red, red-brown or purple-brown. White pockets are formed in the red region of the wood, sometimes preceded by black specks. GEOGRAPHICAL DISTRIBUTION: World-wide in temperate regions (CMI Map 271, ed. 2, 1968). TRANSMISSION: Disseminated by wind-blown spores produced at all times of the year. Viable spores have been found airborne 70 miles from the nearest source (47, 3604), and in surface soil after 8 months (46, 13g). Also found in seed germination tests of Abies by Batko (38: 711). Spores may be introduced on nursery seedlings into disease-free areas (41: 260).

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