Valsa ceratosperma. [Descriptions of Fungi and Bacteria].

Author(s):  
V. P. Hayova

Abstract A description is provided for Valsa ceratosperma. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Valsa ceratosperma is known to be a pathogen, causing Valsa canker of apple trees in Japan (Sawamura et al., 1990). HOSTS: Dead or dying twigs and branches of numerous woody angiosperms. GEOGRAPHICAL DISTRIBUTION: Asia: Azerbaijan, China, Republic of Georgia, Japan, India, Korea, Russia. Australasia: Australia. Europe: Austria, Czech Republic, Germany, Greece, Italy, Lithuania, Portugal, Rumania, Russia, Slovakia, Sweden, Switzerland, UK, Ukraine. North America: USA. South America: Argentina. Spielman (1985) describes distribution as worldwide. TRANSMISSION: By air-borne conidia and ascospores in humid conditions. Conidial and ascospore dispersal of V. ceratosperma was studied in apple tree orchards in Japan (Fujita et al., 1980; Saito et al., 1972).

Author(s):  
V. P. Hayova

Abstract A description is provided for Valsa sordida. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Valsa sordida is usually associated with Valsa canker of poplar twigs. Wounded trees, and trees injured by insects or attacked by other pathogens are more susceptible to infection. Development of Valsa canker is affected by environmental stress (Guyon, 1996; Tao et al., 1984). Poplar canker caused by V. sordida has been studied in different countries (CMI Distribution Maps of Plant Diseases, 1977; Worrall, 1983; Wang et al., 1981) The fungus can be often found in declining poplar stands together with another pathogen of poplar trees, Leucostoma niveum. Valsa sordida may also cause necrosis of willow twigs. HOSTS: Populus spp., Salix spp. and, more rarely, other woody angiosperms. GEOGRAPHICAL DISTRIBUTION: Africa: Morocco. Asia: Armenia, Azerbaijan, China, Republic of Georgia, India, Iran, Iraq, Israel, Japan. Kazakhstan, Korea, Russia (Tatarstan), Turkey, Turkmenia, Uzbekistan. Australasia: Australia (Victoria), New Zealand. Europe: Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, France, Germany, Greece, Ireland, Italy, Netherlands, Norway, Poland, Portugal, Rumania, Russia, Slovakia, Sweden, Switzerland, UK, Ukraine, former Yugoslavia. North America: Canada (Alberta, British Columbia, Nova Scotia, Ontario, Québec, Saskatchewan). USA (California, Colorado, Michigan, Minnesota). South America: Chile. TRANSMISSION: Both conidia and ascospores are air-borne, especially under humid conditions. Yellow or orange exudation of conidia from conidiomata can be often seen after rain.


Author(s):  
J. C. David

Abstract A description is provided for Cladosporium chlorocephalum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Red spot of peony, occurring on leaves, petioles and stems of host. HOSTS: Paeonia arborea, P. officinalis, P. suffruticosa (Paeoniaceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: Canada (Quebec, 3: 138), USA (Alaska, Alabama, Connecticut, District of Colombia, Delaware, Illinois (8: 293), Iowa, Kansas, Massachusetts, Minnesota, Missouri, Mississippi, New York, Ohio, Pennsylvania, Wisconsin, West Virginia). SOUTH AMERICA: Argentina (18: 478). ASIA: Armenia, China, Republic of Georgia, Kazakhstan. AUSTRALASIA: New Zealand. EUROPE: Bulgaria (38: 147), Czech Republic, Denmark, France (28: 510), Italy, Germany, Latvia, Moldavia, Poland, Romania (16: 20), Russia, Switzerland, UK, Ukraine. TRANSMISSION: By wind dispersal of airborne conidia and on dead remains of old plants.


Author(s):  
T. V. Andrianova

Abstract A description is provided for Septoria sisymbrii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot, leaf spot of watercress (ANON., 1984), drying of the leaves. HOSTS: Dentaria laciniata, Descurainia incisa, D. richardsonii subsp. incisa, Nasturtium microphyllum, N. officinale, Sisymbrium altissimum, S. columnae, S. irio, S. junceum, S. loeselii, S. officinale, S. orientale, S. polymorphum, S. septulatum, S. sinapistrum, S. strictissimum (Brassicaceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: USA. CENTRAL AMERICA: Cuba. SOUTH AMERICA: Venezuela. ASIA: Armenia, Republic of Georgia [http://www.cybertruffle.org.uk/gruzmaps/index.htm], India, Iran, Kazakhstan, Kirgizstan, Russia (West Siberia, Far East), Tadjikistan, Turkmenistan, Uzbekistan. EUROPE: Austria, Bulgaria, Czech Republic, Estonia, Germany, Great Britain, Latvia, Lithuania, Moldova, Poland, Portugal, Romania, Russia, Serbia, former Yugoslavia. TRANSMISSION: Not reported, but almost certainly by airborne or splash-dispersed conidia.


Author(s):  
T. V. Andrianova

Abstract A description is provided for Septoria gladioli. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Hard rot (ANON., 1984), leaf spot and black spot on corm scales. HOSTS: Acidanthera spp., Crocus angustifolius (syn. : C. susianus), Freesia refracta, Gladiolus byzantinus, G. communis, G. dubius, G. gandavensis, G. hybridus, G. illyricus, G. imbricatus, G. inarmensis, G. italicus, (syn. : G. segetum), G. neglectus, G. palustris (Iridaceae). [Type host - Gladiolus italicus (syn. : G. segetum).] GEOGRAPHICAL DISTRIBUTION: Africa: Algeria. Asia: Armenia, Republic of Georgia, India, Iran, Russia (Far East), Syria, Turkmenistan. Atlantic Islands: Canary Islands. Central America: Costa Rica. Europe: Albania, Belarus, Bulgaria, Cyprus, Czech Republic, Denmark, Eire, Estonia, France, Germany, Greece, Hungary, Italy, Hungary, Latvia, Netherlands, Poland, Portugal, Romania, Russia, Spain, Switzerland, UK, Ukraine. North America: Canada, USA. South America: Argentina. TRANSMISSION: Three different distribution paths are known for this fungus: old corm to new corm, or mother corm to daughter corm infection; infection of corms or cormlets from infected débris in the soil (mycelium infection); secondary spread by means of spores from plants, in plantings of cormlets and seedlings (STONE, 1958).


Author(s):  
V. P. Hayova

Abstract A description is provided for Leucostoma cinctum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leucostoma cinctum, especially in its conidial state, is a well-known pathogen of stone-fruit trees causing necrosis of twigs, perennial Cytospora-canker. The fungus penetrates mainly through the scars, and may result in dieback of branches or even whole trees. Tree susceptibility to L. cinctum is influenced by lesions (Stanova, 1990). Comparative anatomy and host response of peach cultivars inoculated with L. cinctum was studied by Biggs (1986). Resistance of different cultivars of stone-fruit trees to L cinctum has been investigated by many authors (Cociu et al., 1991; Miles et al., 1989; Pedryc & Rozsnyai, 1991). HOSTS: On dead or dying, attached or fallen twigs of the Rosaceae, mainly Prunoideae (Amygdalus, Armeniaca, Cerasus, Persica, Prunus) and rarely other subfamilies of the Rosaceae, including genera such as Cotoneaster, Crataegus, Malus and Pyrus. GEOGRAPHICAL DISTRIBUTION: Asia: Armenia, Republic of Georgia, Iran, Kazakhstan, Russia, Turkmenistan, Uzbekistan. Australasia: Australia. Europe: Czech Republic, France, Germany, Hungary, Italy, Moldova, Rumania, Russia, Slovakia, Spain, Switzerland, Sweden, Turkey, UK, Ukraine, former Yugoslavia. North America: Canada, USA (Idaho, Michigan, New-Jersey, Oregon). TRANSMISSION: Both conidia and ascospores are air-borne, especially under humid conditions. Orange or reddish droplets or tendrils of conidia extruded from conidiomata can be often seen after rain. It is also known that arthropods can carry propagules in stone-fruit orchards (Helton et al., 1988).


Author(s):  
V. P. Hayova

Abstract A description is provided for Valsa malicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Valsa malicola is associated with dieback of Malus twigs, especially weakened by other factors, for example when frozen, burnt, wounded, injured by insects or attacked by other pathogens. HOSTS: On dead or dying twigs of Malus species, and other Maloideae (Cotoneaster, Crataegus, Cydonia, Pyracantha, Pyrus, Rosa). The fungus can also be found on other members of the Rosaceae (e.g. Prunus), but only infrequently, and mainly as the anamorph. GEOGRAPHICAL DISTRIBUTION: Asia: Armenia, Azerbaijan, China, Republic of Georgia, Kazakhstan, Russia. Europe: Austria, Czech Republic, Germany, Italy, Latvia, Lithuania, Portugal, Rumania, Russia, Slovakia, Sweden, Switzerland, UK, Ukraine. North America. TRANSMISSION: Both conidia and ascospores are air-borne, especially under humid conditions. Brightly coloured droplets or tendrils of conidia are often exuded from conidiomata after rain.


Author(s):  

Abstract A new distribution map is provided for Little cherry virus 1 (Closteroviridae: Velarivirus). Hosts: Prunus spp. Information on the geographical distribution in Europe (Belgium, Czech Republic, France, Germany, Greece, Hungary, Italy, Mainland Italy, Poland, Romania, Slovakia, Spain, Switzerland, UK, England and Wales), Asia (China, Hebei, Liaoning, Shandong, India, Japan, Honshu, Korea Republic, Turkey), Africa (Morocco), North America (Canada, British Columbia, USA, California, Oregon, Washington), South America (Chile) and Oceania (Australia, Queensland, Tasmania, New Zealand) is also given.


Author(s):  
J. C. David

Abstract A description is provided for Cercospora cichorii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot of chicory. HOSTS: Cichorium endivia, C. intybus (Compositae). GEOGRAPHICAL DISTRIBUTION: AFRICA: Madagascar, South Africa (DOIDGE, 1950), Sudan, Zambia. NORTH AMERICA: Bermuda, USA (Michigan, New York, South Dakota, Texas, Wisconsin). SOUTH AMERICA: Argentina. ASIA: Azerbaijan, Republic of Georgia, India, Pakistan, Turkmenistan, Uzbekistan. EUROPE: Greece (52: 2856), Romania (66: 4701), Russia, Ukraine. TRANSMISSION: By wind dispersal of airborne conidia.


Author(s):  
J. C. David

Abstract A description is provided for Pseudocercospora kaki. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot of persimmon. HOSTS: Diospyros hispida, D. kaki, D. lotus, D. texana, D. tupru (Ebenaceae). GEOGRAPHICAL DISTRIBUTION: NORTH AMERICA: USA (Louisiana), Bermuda. SOUTH AMERICA: Brazil (São Paolo, Minas Gerais). ASIA: China (Hong Kong, other provinces also, see GUO & HSIEH, 1995), Republic of Georgia (BRAUN & MEL'NIK, 1997), India, Iran (56: 5475), Japan, Nepal, Taiwan. EUROPE: Russia (BRAUN & MEL'NIK, 1997). TRANSMISSION: Conidia are dispersed by rain splash (ZHU et al., 1996).


Author(s):  
D. W. Minter

Abstract A description is provided for Geoglossum umbratile. Some information on its associated organisms and substrata, habitats, dispersal and transmission and conservation status is given, along with details of its geographical distribution (North America (Canada and USA (Michigan)), South America (Chile), Asia (China (Hainan and Sichuan), India (Uttarakhand), Pakistan and Taiwan), Atlantic Ocean (Spain (Canary Islands)), Australasia (Australia (New South Wales South Australia Tasmania and Victoria) and New Zealand), Europe (Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Irish Republic, Italy, Lithuania, Montenegro, Netherlands, Norway, Poland, Russia, Slovakia, Sweden, Switzerland and UK)). No reports of negative economic impacts of this fungus have been found.


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