Acroconidiella tropaeoli. [Descriptions of Fungi and Bacteria].

Author(s):  
M. B. Ellis

Abstract A description is provided for Acroconidiella tropaeoli. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Tropaeolum spp. DISEASE: Causes severe losses in nasturtium seed fields in coastal California. It produces a yellowing and death of the leaves after mid season and this reduces yield. The fungus occurs sometimes on stems and is present on seeds but is most abundant on leaves where it forms characteristic irregular or subcircular brownish or purple spots visible on both sides. These are up to 1 cm diam. or often larger through confluence, the centres later shrivel and the surrounding tissues may form a broad yellow margin. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Ceylon, Ethiopia, Guatemala, Haiti, India, Jamaica, Kenya, Mauritius, New Guinea, New Zealand, Tanzania, Uganda, U.S.A. TRANSMISSION: The pathogen is borne internally and externally in up to 93% of commercial nasturtium 'seed', persisting for at least 3 years in the form of thick-walled mycelium in the pericarp and seed.

Author(s):  
A. Sivanesan

Abstract A description is provided for Cochliobolus cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cynodon dactylon (very common on this host), other Cynodon spp., Agropyron, Ammi, Arecastrum, Axonopus, Calathea, Chamaedorea, Chrysalidocarpus, Dactyloctenium, Eleusine, Hordeum, Ipomoea, Lycopersicon, Muhlenbergia, Oryza, Panicum, Pennisetum, Poa, Rhapis, Secale and Zea. DISEASE: Leafspot of Bermuda grass end other crops, leaf blight end brown patches of turf, lawns end golflinks. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Bangladesh, Brazil, Brunei, Egypt, Ghana, Guinea, India, Israel, Iraq, Italy, Japan, Kenya, Malaysia, New Zealand, Pakistan, Papua New Guinea, Puerto Rico, Spain, South Africa, Sudan, Tanzania, Trinidad, Turkey, USA, USSR, Venezuela, Yugoslavia and Zambia. TRANSMISSION: By wind-borne conidia and seed-borne.


Author(s):  

Abstract A new distribution map is provided for Ceroplastes destructor Newst. (Homopt., Coccoidea) (White Wax Scale). Hosts: Citrus, coffee, various fruit and shade trees. Information is given on the geographical distribution in AFRICA, Bechuanaland, Congo, British Cameroons, Kenya, Madagascar, Nyasaland, San Thomé, Southern Rhodesia, Sudan, Tanganyika, Uganda, Union of South Africa, AUSTRALASIA and PACIFIC ISLANDS, Australia, New Guinea, New Zealand, NORTH AMERICA, Mexico, U.S.A.


Author(s):  
J. L. Mulder

Abstract A description is provided for Puccinia cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecial stage on species of Plantago. Uredial and telial stages on species of Cynodon, particularly C. dactylon. DISEASE: Leaf rust of Bermuda grass (Cynodon dactylon). GEOGRAPHICAL DISTRIBUTION: Widespread. Africa: Ethiopia, Ghana, Kenya, Libya, Malawi, Mauritius Morocco, Nigeria, Sierra Leone, South Africa, Sudan, Tunisia and Zambia. Americas: Argentina, Barbados, Bermuda, Colombia, Dominica, Dominican Republic, Jamaica, Mexico, Nicaragua, Panama, Puerto Rieo, Salvador, Trinidad, USA (South) and Venezuela. Asia: Cambodia, Ceylon, China, India, Iraq, Pakistan, Turkey and USSR. Australasia & Oceania: Australia, Hawaii, New Caledonia, New Zealand and Papua & New Guinea. Europe: Cyprus, France, Malta and Rumania. TRANSMISSION: No studies appear to have been reported. Since the aecial stage has not been found in USA the urediospores presumably survive during the dormant periods of the tdial host.


Author(s):  
A. Sivanesan

Abstract A description is provided for Cochliobolus eragrostidis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Acacia, Agave, Allium, Alysicarpus, Amorphophallus, Anacardium, Arachis, Areca, Billbergia, Calamus, Callitris, Calotropis, Camellia, Cananga, Capsicum, Citrullus, Citrus, Clerodendron, Cocos, Coffea, Colocasia, Cymbopogon, Dendrobium, Digitaria, Dioscorea, Dracaena, Durio, Elaeis, Eragrostis, Eucalyptus, Euphorbia, Furcraea, Gladiolus, Glycine, Gossypium, Heliconia, Hevea, Hystrix, Ipomoea, Kaempferia, Lycopersicon, Mangifera, Manihot, Mystroxylon, Musa, Neyraudia, Oldenlandia, Opuntia, Oryza, Panicum, Pennisetum, Pentas, Phalaenopsis, Phaseolus, Pinus, Polygala, Pueraria, Raphia, Raphanus, Rhodomyrtus, Rhoeo, Rottboellia, Saccharum, Sesamum, Sorghum, Spinacia, Sporobolus, Stylosanthes, Theobroma, Thrasya, Tradescantia, Trichosanthes, Triplochiton, Triticum, Vanda, Vigna, Zea, Zingiber and soil. DISEASE: Leaf spots. GEOGRAPHICAL DISTRIBUTION: Australia, Bangladesh, Belize, Brazil, Brunei, Burma, Colombia, Cuba, Fiji, Ghana, Guinea, Honduras, Hong Kong, India, Indonesia, Japan, Kenya, Kuwait, Malaysia, New Zealand, Nigeria, Papua New Guinea, Puerto Rico, Sierra Leone, Singapore, Solomon Islands, Sri Lanka, Trinidad, USA, Zambia, Zaire. TRANSMISSION: By wind-borne conidia.


Author(s):  
C. Booth

Abstract A description is provided for Nectria flammea. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: The fungus occurs on a variety of scale insects, Aspidiotus nerii, Hemiberlesia rapax (53, 1-694), Pseudaulacaspis pentagona (55, 2093) etc. on a wide range of hosts, Acacia, Brachyglottis, Camellia, Citrus, Coffea, Morus, Ribes, Salix, Thea, Weinmannia, etc. GEOGRAPHICAL DISTRIBUTION: Australia, Belize, Fiji, India, Japan, New Zealand, Papua and New Guinea, Tanzania, Tonga, Uganda, South Africa, Sarawak, Zambia. TRANSMISSION: Airborne by ascospores or by moisture droplets as conidia.


Author(s):  
D. W. Minter

Abstract A description is provided for Ophioceras leptosporum. Some information on its associated organisms and substrata, dispersal and transmission, habitats and conservation status is given, along with details of its geographical distribution (Africa (Cameroon), North America (Mexico), South America (Brazil (Bahia)), Asia (Afghanistan, China (Hong Kong), Malaysia, Papua New-Guinea, Taiwan, Thailand), Australasia (New Zealand), Europe (Belgium, Finland, Netherlands, Serbia, Spain, Switzerland, UK)). In a study of endophytes of Terminalia and other plants in Cameroon, Toghueo et al. (2017) detected O. leptosporum and demonstrated that it produced amylase and lipase, both enzymes with potential economic applications.


Author(s):  
P. W. Crous

Abstract A description is provided for Nectria camelliae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Eucalyptus sp., Pinus pinea (62, 925). DISEASE: Isolated from roots and stems of dying P. pinea seedlings (62, 925), and roots of dying Eucalyptus cuttings. GEOGRAPHICAL DISTRIBUTION: Australia, Brazil, New Zealand, Papua New Guinea (Crous & Wingfield, 1993). TRANSMISSION: Probably wind and splash dispersed.


Author(s):  
P. F. Cannon

Abstract A description is provided for Capronia normandinae. Some information on its morphological characteristics, associated organisms and substrata, dispersal and transmission, habitats and conservation status is given, along with details of its geographical distribution (Asia (Papua-New Guinea), Atlantic Ocean (Portugal, Madeira), Australasia (New Zealand), Europe (France, Ireland, Norway, Portugal, Spain, UK), South America (Argentina, Chile, Colombia, Ecuador)).


Author(s):  

Abstract A new distribution map is provided for Alternaria passiflorae Simmonds. Hosts: Passion fruit (Passiflora edulis). Information is given on the geographical distribution in AFRICA, Kenya, Tanzania, Zambia, AUSTRALASIA & OCEANIA, Australia, Fiji, Hawaii, New Zealand, Papua - New Guinea, NORTH AMERICA, Canada (British Columbia).


Author(s):  
A. Sivanesan

Abstract A description is provided for Cochliobolus bicolor. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Andropogon, Apluda, Brachiaria, Cymbopogon, Eleusine, Eragrostis, Melanocenchris, Oryza, Panicum, Paspalum, Pennisetum, Setaria, Sorghum, Triticum, Urochloa, Zea, Zizania. Also isolated from a wide variety of other host plants and soil. DISEASE: Foot rot of wheat, zonate leaf spot of Pennisetum and seedborne (34: 324, 55: 1788, 60: 4427, 62: 4281). The disease is associated with the anamorph. GEOGRAPHICAL DISTRIBUTION: Australia, Brazil, Canada, East and West Africa, Ethiopia, India, Malaysia, New Zealand, Papua New Guinea, South Africa, Swaziland, Taiwan, Tanzania, USA, Yugoslavia. TRANSMISSION: By infected seeds and air-borne conidia.


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