Drepanopeziza ribis. [Descriptions of Fungi and Bacteria].

1979 ◽  
Author(s):  
C. Booth
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Leaf Surface ◽  
Leaf Surfaces ◽  
Water Borne

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.

Mycocentrospora acerina. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
B. C. Sutton
Keyword(s):  
New Zealand ◽  
Host Range ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Root Rot ◽  
Crown Rot ◽  
Wide Host Range ◽  
Water Borne

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).

Mycosphaerella arachidis. [Descriptions of Fungi and Bacteria].

1974 ◽  
Author(s):  
J. L. Mulder
Keyword(s):  
Geographical Distribution ◽  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Leaf Surface ◽  
Seed Transmission ◽  
Diurnal Periodicity ◽  
Leaf Surfaces ◽  
Carry Over

Abstract A description is provided for Mycosphaerella arachidis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Arachis hypogaea. DISEASE: Early leaf spot of groundnut: also called tikka with Mycosphaerella berkeleyi (CMI Descript. 412). Lesions circular, 1-10 mm diam., reddish-brown to black on the upper leaf surface and lighter shades of brown on the lower. Distinct chlorotic halos develop early on the upper surface. The lesions tend to be larger than those of M. berkeleyi and the dark stroma of the latter is absent. The conidia form on both leaf surfaces, the conidiophores being somewhat diffuse. Severe attacks cause defoliation (13, 74; 17, 651; 35, 342). GEOGRAPHICAL DISTRIBUTION: Widespread with host (CMI Map 166, ed. 3, 1966). TRANSMISSION: In India the air dispersed conidia showed a diurnal periodicity with a peak at 1000 h (50, 1524), and in USA most conidia were trapped at 1100-1500 h; rain increased numbers (Smith & Crosby, Phytopathology 63: 703-707, 1973). Carry-over occurs in host debris and seed transmission seems unimportant.

Selenophoma donacis. [Descriptions of Fungi and Bacteria].

1973 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Surface ◽  
Dactylis Glomerata ◽  
Phleum Pratense ◽  
Northern Europe ◽  
Wet Weather ◽  
Water Borne

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.

Pestalozziella subsessilis. [Descriptions of Fungi and Bacteria].

2012 ◽  
Author(s):  
T. V. Andrianova
Keyword(s):  
United Kingdom ◽  
Czech Republic ◽  
New Jersey ◽  
New Zealand ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Economic Impacts ◽  
Conservation Status ◽  
Infraspecific Variation ◽  
Chaetomella Raphigera

Abstract A description is provided for Pestalozziella subsessilis, a colonizer of living leaves, causing leaf spot symptoms leading to leaves fading and dying. Some information on its dispersal and transmission, economic impacts, infraspecific variation and conservation status is given, along with details of its geographical distribution (USA (Florida, Kansas, Louisiana, Mississippi, Missouri, New Jersey, Wisconsin), Kazakhstan, Russia, New Zealand, Austria, Bulgaria, Czech Republic, Germany, Hungary, Italy, Poland, Ukraine, and United Kingdom), hosts (Geranium carolinianum (leaf), G. collinum (leaf), G. columbianum (leaf), G. columbinum (leaf), G. macrorrhizum (leaf), G. maculatum (leaf), G. palustre (leaf), G. pratense (leaf), G. pusillum (leaf), G. pyrenaicum (leaf), G. robertianum (leaf), G. sanguineum (leaf), G. sylvaticum (leaf), G. wlassovianum (leaf), Geranium sp., and Oxypolis rigidor [Tiedemannia rigida]) and associated fungi Chaetomella raphigera.

Erwinia mallotivora. [Descriptions of Fungi and Bacteria].

1981 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Leaf Surface ◽  
Bacterial Leaf Spot ◽  
Secondary Spread ◽  
Shoot Blight ◽  
Mallotus Japonicus ◽  
Rain Splash

Abstract A description is provided for Erwinia mallotivora. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Mallotus japonicus (Euphorbiaceae). DISEASE: Bacterial leaf spot. The disease starts as water-soaked spots on the newly developing leaves in May and June. The spots tend to form close to the main veins. They enlarge and become angular as they are restricted by the veins, becoming dark brown, and often with a chlorotic halo about 1 mm wide. Spots may coalesce and kill the leaf, and shoot blight may also occur. Under humid conditions bacteria may exude on to the leaf surface. GEOGRAPHICAL DISTRIBUTION: Japan. TRANSMISSION: Unknown, but presumably rain splash plays a part at least in secondary spread.

Mortierella polycephala. [Descriptions of Fungi and Bacteria].

1997 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Former Ussr ◽  
Water Borne

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.

Septoria lactucae. [Descriptions of Fungi and Bacteria].

1972 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Seed Coat ◽  
Lactuca Sativa ◽  
Leaf Spot ◽  
Early Symptoms ◽  
Leaf Surfaces ◽  
A Minor

Abstract A description is provided for Septoria lactucae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Lactuca sativa. DISEASE: A minor leaf spot of lettuce (Lactuca sativa). Early symptoms are small, numerous, irregularly outlined, chlorotic spots beginning on the outer leaves. They enlarge, becoming brown or somewhat silvery, sometimes with a chlorotic halo, and shot-holes develop. Pycnidia, which may not be conspicuous, are found on both leaf surfaces. Infection spreads to the younger leaves and flowers in severe attacks (20: 193; 21: 182). GEOGRAPHICAL DISTRIBUTION: Widespread (CMI Map 485, ed. 1, 1972). TRANSMISSION: By seed, pycnidia can be found embedded in the seed coat (41: 267).

Pyrenophora erythrospila. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot

Abstract A description is provided for Pyrenophora erythrospila. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Agrostis, Hordeum and Triticum. DISEASE: Leaf spot of bent grass and red top. GEOGRAPHICAL DISTRIBUTION: Australia, Europe, New Zealand, North America. TRANSMISSION: By wind-borne conidia.

Entyloma serotinum. [Descriptions of Fungi and Bacteria].

1988 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Infected Plant ◽  
Growing Season ◽  
Republic Of Georgia ◽  
Borago Officinalis ◽  
Plant Remains ◽  
Water Splash

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.

Pestalotiopsis guepinii. [Descriptions of Fungi and Bacteria].

1971 ◽  
Author(s):  
J. E. M. Mordue
Keyword(s):  
Puerto Rico ◽  
New Zealand ◽  
Dominican Republic ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Stem Canker ◽  
Limited Extent ◽  
Camellia Japonica ◽  
Water Splash ◽  
Extensive Growth

Abstract A description is provided for Pestalotiopsis guepinii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Camellia japonica, C. sinensis, Erica and Rhododendron, with occasion records on unrelated hosts including Hippocratea, Jatropha, Laurus, Pinus and Terminalia. DISEASE: Grey leaf spot, twig dieback, stem canker, petal rot. GEOGRAPHICAL DISTRIBUTION: Specimens in Herb. IMI from Ghana, Kenya, Togo, India, Bohemia, France, Germany, Netherlands, UK, USA. Reported in literature from Belgium, Denmark, Italy, Sweden, Switzerland, Azores, Indonesia, Japan, New Zealand, Puerto Rico, Dominican Republic. TRANSMISSION: Conidia from diseased material and trash are dispersed by contact, water splash and local air currents, possibly to a limited extent by soil although extensive growth in soil has not been reported. It may also be seed-borne.

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