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).

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.

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.

Leveillula taurica. [Descriptions of Fungi and Bacteria].

1968 ◽  
Author(s):  
K. G. Mukerji
Keyword(s):  
Powdery Mildew ◽  
Geographical Distribution ◽  
Central Europe ◽  
Mediterranean Region ◽  
World Wide ◽  
Near East ◽  
Gossypium Barbadense ◽  
Cyamopsis Tetragonoloba ◽  
Leveillula Taurica ◽  
Trees And Shrubs

Abstract A description is provided for Leveillula taurica. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Gossypium barbadense, G. hirsutum and Cyamopsis psoraloides[Cyamopsis tetragonoloba]. Also on many other trees and shrubs belonging to the Leguminoseae, Malvaceae and Euphorbiaceae (Salmon, 1900; Blumer, 1933; Tarr, 1955; 37: 521). DISEASES: Powdery mildew of cotton and guar. The host becomes completely covered with the fungus which mostly forms conidia and rarely cleistothecia. Severe attacks cause defoliation. Komarov (1895) reported that in Seravschan-Turkestan every plant of the steppes up to 1219-1524 m is attacked. The fungus does not occur beyond 1829 m. GEOGRAPHICAL DISTRIBUTION: World wide but mainly in the mediterranean region, Central Europe and the Near East (Dennis, 1960; CMI Map 217; 37: 400). TRANSMISSION: Wind borne. In the Sudan the pathogen over-summers on Euphorbia heterophylla, a common weed (37: 521).

Uncinula necator. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. N. Kapoor
Keyword(s):  
Powdery Mildew ◽  
Vitis Vinifera ◽  
Geographical Distribution ◽  
World Wide ◽  
Uncinula Necator

Abstract A description is provided for Uncinula necator. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Vitis spp., chiefly Vitis vinifera; also on Parthenocissus spp., Ampelopsis spp. DISEASE: Powdery mildew of vine. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Conidia and mycelium overwinter in diseased buds, fallen berries or on overwintered stems. Cleistothecia, when formed, are capable of overwintering (Blumer, 1967).

Erysiphe polygoni. [Descriptions of Fungi and Bacteria].

1976 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Powdery Mildew ◽  
Geographical Distribution ◽  
World Wide ◽  
Initial Infection ◽  
Erysiphe Polygoni

Abstract A description is provided for Erysiphe polygoni. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Polygonum and Rumex. DISEASE: Powdery mildew. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Initial infection is perhaps by persistent mycelium and wind-borne conidia. Ascospores from overwintered cleistothecia may also start new infections.

Uromyces viciae-fabae. [Descriptions of Fungi and Bacteria].

1965 ◽  
Author(s):  
G. F. Laundon
Keyword(s):  
Geographical Distribution ◽  
High Temperatures ◽  
Lens Culinaris ◽  
World Wide ◽  
Broad Bean ◽  
Infected Plant ◽  
Plant Debris ◽  
Source Of Infection ◽  
Northern Regions ◽  
Early Source

Abstract A description is provided for Uromyces viciae-fabae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Lathyrus, Lens, Orobus, Pisum and Vicia species. DISEASE: Rust on leaves and stems of broad-bean, pea, vetch and lentil, causing partial defoliation of susceptible varieties. GEOGRAPHICAL DISTRIBUTION: World-wide (CMI Map 200, Ed. 2, 1964). TRANSMISSION: Recorded seed-borne on broad-bean (11: 222) and in infected plant debris mixed with seed of Lens culinaris in India by Prasada & Verma (1948), who found infection disseminated chiefly by aecidiospores at temperatures below 25°C. At Delhi, aecidiospores and urediospores die after harvest but the teleutospores resist high temperatures and remain viable for 2 yr. when stored at 3-18°C, germinating in January to initiate fresh outbreaks of infection. Studies by Kispatic (1949) in Yugoslavia suggested that aecidiospores probably remain viable in Mediterranean climates, though unable to survive severe winters experienced in Northern regions. The uredio mycelium was found very resistant to both heat and sunlight and survived the winter in leaves and stems of autumn-sown broad-bean, producing new spores as an early source of infection in spring. Urediospores showed 30% germination after 5 months storage at 1°C.

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).

Erysiphe graminis. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. N. Kapoor
Keyword(s):  
Powdery Mildew ◽  
Geographical Distribution ◽  
World Wide ◽  
Erysiphe Graminis ◽  
Numerous Species ◽  
Initial Infection

Abstract A description is provided for Erysiphe graminis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On numerous species compasing over 100 genera of Gramineae, with the exception of the Maydeae, Andropogoneae, Zoysicae, Paniceae and Oryzeae (Dickson, 1956; Hirata, 1966). DISEASE: Powdery mildew of wheat, barley ant other cereals and grasses. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Initial infection by persistent mycelium and conidia on stubble or straw as well as on overwintered plants; ascospores from ovenvintered cleistothecia when formed, may also cause infection (Turner, 1956).

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.

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