Hypohelion scirpinum. [Descriptions of Fungi and Bacteria].

1997 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Life Cycle ◽  
Geographical Distribution ◽  
Northern Hemisphere ◽  
Living Plant ◽  
Tver Oblast ◽  
Stems And Leaves ◽  
Low Altitude ◽  
Suitable Habitats ◽  
Almost All ◽  
Schoenoplectus Lacustris

Abstract A description is provided for Hypohelion scirpinum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Hypohelion scirpinum usually occurs on dead fallen stems and leaves of Schoenoplectus lacustris. Virtually nothing is known about the ecology of this fungus, except for Ingold's observation that its life cycle is entirely aquatic. It seems likely however that, like many other members of the Rhytismataceae, the fungus colonizes the living plant, then fruits on those leaves and stems after they have died. HOSTS: Arundinaria macrosperma (stem), Plantae gen. indet. (leaf), Schoenoplectus lacustris (stem, dead floating stem), Scirpus lacustris var. occidentalis (stem), S. validus (stem), Scirpus sp. (stem). Almost all records are from Schoenoplectus lacustris, many of the others are misidentifications or synonyms for this plant. The record on Arundinaria is questionable. GEOGRAPHICAL DISTRIBUTION: Belgium, Canada (Saskatchewan), France, Germany, Hungary, Italy, Latvia, Russia (Tver Oblast), Sweden, UK (England), Ukraine, USA (Dakota, Mississippi). A temperate northern hemisphere species of low altitude, not very acidic wetlands and slow flowing rivers. Rather infrequently recorded, with numbers of records declining, and some unsuccessful searches for this fungus in apparently suitable habitats in recent years. TRANSMISSION: By air-borne ascospores in humid conditions.

Rhytisma andromedae. [Descriptions of Fungi and Bacteria].

1996 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Geographical Distribution ◽  
Leningrad Oblast ◽  
Tver Oblast ◽  
Novgorod Oblast ◽  
Far North ◽  
Almost All

Abstract A description is provided for Rhytisma andromedae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Andromeda glaucophylla (leaf), A. polifolia (leaf), Kalmia polifolia (stem), Lyonia ligustrina (leaf), Pieris phillyrifolia (leaf). Almost all records are on A. polifolia. DISEASE: Rhytisma andromedae is found on living and dead leaves and, often, twigs. In Scandinavia and Britain, the stroma forms during July, and conidia are produced in July and August (exceptionally September); stromata with immature ascomata are found between March and May of the following year. GEOGRAPHICAL DISTRIBUTION: Austria, Belarus, Canada (Newfoundland, Ontario, Québec, Saskatchewan), Eire, Estonia, Finland, Germany, Latvia, Norway, Poland, Rumania, Russia (Archangelsk Oblast, Kamchatka Oblast, Leningrad Oblast, Novgorod Oblast, Tver Oblast), Sweden, UK (England, Scotland, Wales), Ukraine, USA (Alaska, Georgia, Maine, Virginia). In Norway the fungus has been recorded from as far north as 70° and is known up to altitudes of about 700 m (Eckblad & Torkelsen, 1986). TRANSMISSION: By air-borne ascospores in humid conditions; ascomata contain ascospores have been observed from May to early August.

Lophodermium foliicola. [Descriptions of Fungi and Bacteria].

1997 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Geographical Distribution ◽  
Northern Hemisphere ◽  
Late Summer ◽  
Living Plant ◽  
Sorbus Torminalis ◽  
Rubus Fruticosus ◽  
Early Autumn ◽  
Kursk Oblast ◽  
Fallen Leaves ◽  
Pyrus Amygdaliformis

Abstract A description is provided for Lophodermium foliicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Fruits on dead fallen leaves under Crataegus where they can accumulate over winter; low bushes surrounded by Urtica and Rubus fruticosus agg. are among the most likely places to find it; probably less local than records suggest, as the conditions in which it is found deter less dedicated observers. It seems likely that, like many other members of the Rhytismataceae, the fungus colonizes the living plant, then fruits on those leaves after they have died. HOSTS: Leaves of Acer orientalis, Cotoneaster integerrimus, C. vulgaris, Cotoneaster sp., Crataegus coccinea, C. crus-galli, C. monogyna, C. oxyacanthoides, Crataegus sp., Pyrus amygdaliformis, P. communis, Pyrus sp., Rosaceae gen. indet., Sorbus torminalis. Records on genera other than Crataegus, particularly those not in the Rosaceae. need re-evaluation. GEOGRAPHICAL DISTRIBUTION: Austria, Azerbaijan, Belgium, former Czechoslovakia, Eire, Finland, France, Germany, Greece, Ireland, Italy, Russia (Kursk Oblast), Spain, Sweden, UK (England, Scotland, Wales), Ukraine. Altitude records exist up to 1580m (Spain) and 1050m (Greece). Widespread but local throughout Europe and just into Asia on dead fallen leaves of various members of the Rosaceae, but particularly Crataegus. TRANSMISSION: By air-borne ascospores in humid conditions. In the temperate northern hemisphere, ascocarps probably mostly open in late summer and early autumn.

scholarly journals CAD integrated automatic recognition of weld paths

2021 ◽  
Author(s):  
Tuan Anh Tran ◽  
Andrei Lobov ◽  
Tord Hansen Kaasa ◽  
Morten Bjelland ◽  
Ole Terje Midling
Keyword(s):  
Life Cycle ◽  
Spatial Analysis ◽  
Product Life Cycle ◽  
Real Life ◽  
Automatic Recognition ◽  
Integrated Method ◽  
Weld Joints ◽  
Related Information ◽  
Almost All ◽  
Sequential Assembly

AbstractIn this paper, a CAD integrated method is proposed for automatic recognition of potential weld locations in large assembly structures predominantly comprised of weld joints. The intention is to reduce the total man-hours spent on manually locating, assigning, and maintaining weld-related information throughout the product life cycle. The method utilizes spatial analysis of extracted stereolithographic data in combination with available CAD functions to determine whether the accessibility surrounding a given intersection edge is sufficient for welding. To demonstrate the method, a system is developed in Siemens NX using their NXOpen Python API. The paper presents the application of the method to real-life use cases in varying complexity in cooperation with industrial partners. The system is able to correctly recognize almost all weld lines for the parts considered within a few minutes. Some exceptions are known for particular intersection lines located deep within notched joints and geometries weldable through sequential assembly, which are left as a subject to further works.

Anthostomella arenaria. [Descriptions of Fungi and Bacteria].

2014 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Life Cycle ◽  
Geographical Distribution ◽  
Conservation Status ◽  
Coastal Dunes ◽  
Present Species ◽  
Leymus Arenarius

Abstract A description is provided for Anthostomella arenaria. Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (Europe (Belgium, Denmark, Finland, Norway, Sweden and UK)) and habitats. This species has been recorded from coastal dunes and grasslands. Some members of Anthostomella are endobionts for part of their life cycle, but for the present species the time of substratum colonization and nutritional relations with the associated plant (Leymus arenarius) have not been established.

Melampsora medusae. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
J. Walker
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Northern Hemisphere ◽  
Populus Deltoides ◽  
Leaf Damage ◽  
Main Method ◽  
Melampsora Medusae ◽  
Nursery Stock ◽  
Eastern Australia ◽  
Incremental Growth

Abstract A description is provided for Melampsora medusae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pycnia and aecia on Coniferae, especially Larix and Pseudotsuga, less commonly on Pinus and other genera (Ziller, 1965). Uredinia and telia on species of Populus, especially Populus deltoides, and its varieties and hybrids P. balsamifera, P. nigra var. italica and others. Its exact host range on species of Populus is not known due to confusion with other species of Melampsora and to uncertainty in the reported identity of some species of Populus and clones (Walker, Hartigan & Bertus, 1974). DISEASE: Leaf rust of poplars, causing severe leaf damage and early defoliation on susceptible species and clones. Continued defoliation of successive flushes of growth predisposes trees to winter injury and dieback (Peace, 1962) and can cause death of trees, especially nursery stock and trees 1-2 yr old (25, 204; 47, 241; Walker Haitigan & Bertus, 1974). Reduction in incremental growth of timber occurs with susceptible varieties. Some damage can occur to the conifer hosts. It is often severe on Pseudotsuga menziesii (45, 459; 47, 126) and in nurseries Pinus spp. and Larix spp. can be heavily attacked (Ziller, 1965). GEOGRAPHICAL DISTRIBUTION: North America (Canada, USA), Asia (Japan); Australasia and Oceania (Australia, New Zealand); Europe (France, Spain). Reports of Melampsora spp. on poplars (including P. deltoides and P. canadensis) from South America (Argentina, 21, 173), Uruguay (Lindquist & de Rosengurtt, 1967) may refer in part to M. medusae. TRANSMISSION: By air-borne urediniospores, often over long distances (suspected from eastern Australia to New Zealand). Urediniospores survive the winter in milder climates on semi-evergreen lines and on green sucker growth of deciduous trees. This is probably the main method of overwintering in the Southern Hemisphere and in warmer parts of the Northern Hemisphere. The possibility of bud carryover as occurs with M. epitea on Salix in Iceland (Jorstad, 1951) and the Canadian Arctic (Savile, 1972) should be investigated. Telia survive the winter and basidiospores formed in spring infect susceptible conifers in parts of the Northern Hemisphere (Ziller, 1965) but no conifer infection has so far been found in Australia.

Passalora bupleuri. [Descriptions of Fungi and Bacteria].

2014 ◽  
Author(s):  
T. V. Andrianova
Keyword(s):  
South America ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
West Bengal ◽  
Conservation Status ◽  
Voronezh Oblast ◽  
Belgorod Oblast ◽  
Tver Oblast ◽  
Stavropol Krai

Abstract A description is provided for Passalora bupleuri, a colonizer of living leaves, causing mild leaf spot symptoms and further leaf fading and drying, probably hastening leaf death. Some information on its habitat, dispersal and transmission, and conservation status is given, along with details of its geographical distribution (South America (Chile), Asia (Armenia, Azerbaijan, Georgia, India (Orissa and West Bengal), Kazakhstan, Kyrgyzstan, Russia (Kamchatka oblast, Primorye krai) and Uzbekistan), Caribbean (Cuba) and Europe (Bulgaria, Estonia, Germany, Italy, Latvia, Lithuania, Poland, Romania, Russia (Belgorod oblast, Kabardino-Balkaria Republic, Leningradskaya oblast, Lipetsk oblast, Stavropol krai, Tver oblast, Voronezh oblast), Slovakia, Spain and Ukraine)) and hosts (including Bupleurum tenuissimum).

Anthostomella alchemillae. [Descriptions of Fungi and Bacteria].

2014 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Life Cycle ◽  
Geographical Distribution ◽  
Conservation Status ◽  
Present Species

Abstract A description is provided for Anthostomella alchemillae. Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (Europe: Ukraine) and habitats. Some members of Anthostomella are endobionts for part of their life cycle, but for the present species the time of substratum colonization and nutritional relations with the associated plant (montane) have not been established.

Colpoma crispum. [Descriptions of Fungi and Bacteria].

1997 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Picea Abies ◽  
Geographical Distribution ◽  
Northern Hemisphere ◽  
Pseudotsuga Menziesii ◽  
Late Summer ◽  
Juniperus Virginiana ◽  
North West ◽  
Early Autumn

Abstract A description is provided for Colpoma crispum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: On dead, rather brittle twigs of Picea abies, but usually attached but sometimes fallen by the time ascomata contain ascospores. Probably involved in self-pruning of the tree, but associated with lichen colonies unlike species of Therrya on Pinus (IMI Descriptions 1297 and 1298), and Colpoma on Quercus (IMI Description 942) which occur on twigs without lichen colonies. HOSTS: Juniperus virginiana (twig), Larix sp. (bark, twig), Picea abies (bark, twig), Picea sp. (bark), Pseudotsuga menziesii (twig). GEOGRAPHICAL DISTRIBUTION: Germany, Italy, Sweden, UK (England, Scotland, Wales), Ukraine, USA (Oregon). Unsuccessful searches in north-west Poland. Altitude records exist up to 950m (Ukraine). TRANSMISSION: By air-borne ascospores in humid conditions. In the temperate northern hemisphere, ascocarps probably mostly open in late summer and early autumn.

Pucciniastrum americanum. [Descriptions of Fungi and Bacteria].

1969 ◽  
Author(s):  
G. F. Laundon
Keyword(s):  
New York ◽  
British Columbia ◽  
Life Cycle ◽  
Nova Scotia ◽  
Leaf Rust ◽  
Geographical Distribution ◽  
Picea Glauca ◽  
Yellow Rust ◽  
White Spruce ◽  
Rubus Idaeus

Abstract A description is provided for Pucciniastrum americanum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pycnia and aecia on Picea glauca (=P. canadensis), uredia and telia on Rubus idaeus (incl. R. strigosus) and R. leucodermis (raspberries). DISEASE: Needle rust of white spruce. Late leaf rust or late yellow rust of raspberry, infecting canes, leaves, petioles, calyces and fruits. GEOGRAPHICAL DISTRIBUTION: Canada and U.S.A. (widely distributed, recorded from British Columbia, Connecticut, Idaho, Illinois, Iowa, Mass., Md, Me, Montana, North Dakota, New Hamp., New Jersey, Nova Scotia, New York, Ohio, Ontario, Quebec, Vermont, Wisconsin, West Virginia). TRANSMISSION: Although the basidiospores infect Picea glauca (white spruce) (Darker, 1929) in some areas they probably play little part in the life cycle on raspberry since this rust is found on the latter host year after year in regions remote from any spruce trees (Anderson, 1956).

Pratylenchus in sugarcane: a diminishing problem?

2021 ◽  
pp. 66-72
Author(s):  
Prabashnie Ramouthar
Keyword(s):  
South Africa ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Economic Importance ◽  
Nematode Management ◽  
Pratylenchus Brachyurus ◽  
Damage Symptoms

Abstract This chapter focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of Pratylenchus brachyurus, P. neglectus, P. scribneri and P. zeae infesting sugarcane in South Africa. Information on their interactions with other nematodes and pathogens, the efficacy and optimization of some recommended integrated nematode management programmes and future nematode research requirements are also presented.

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