Peronospora rumicis. [Descriptions of Fungi and Bacteria].

Author(s):  
G. Hall

Abstract A description is provided for Peronospora rumicis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Emex spinosa, Polygonum convolvulus, Rumex acetosa, R. acetosella, R. alpestris (= R. arifolius), R. auriculatus, R. aviculare, R. hastatus, R. lunaria, R. longifolius, R. montanus, R. patienta, R. polyanthemus, R. repens, R. scutatus, R. thyrsifolius, R. tuberosus, R. vesicarius. DISEASE: Downy mildew of Rumex. Both leaves and flowers are infected. On R. acetosella, the plant remains upright following infection and the upper leaves crumple. In other Rumex species, infected leaves become covered in a very dense layer of violet-coloured felt on their undersurface, whereas a grey felt layer develops on flowers. Leaves become yellowish and their margins roll back (39, 159). GEOGRAPHICAL DISTRIBUTION: Africa: Libya, Morocco, South Africa. Asia-Temperate: Azerbaijan, Republic of Georgia, Israel, Kazakhstan, Kirghizistan, Stavropol. Asia-Tropical: India. Australasia: New Zealand. Europe: Austria, Cyprus, Czechoslovakia, Denmark, Eire, Estonia, Faeroes, Finland, France, Germany, Hungary, Italy, Latvia, Norway, Poland, Romania, Russia (Novgorod, St. Petersburg, Smolensk, Yaroslavl), Serbia, Sweden, Switzerland, Ukraine, UK (England, Scotland), Yugoslavia. TRANSMISSION: By conidia which are dispersed by wind or rain-splash. Mycelium perennates in the root.

Author(s):  

Abstract A new distribution map is provided for Peronospora rumicis Corda. Hosts: Rumex spp., Emex spinosa, Polygonum convolvulus. Information is given on the geographical distribution in AFRICA, Libya, Morocco, South Africa, ASIA, Azerbaidzhan, Republic of Georgia, India, Himachal Pradesh ,; Maharastra, Tamil Nadu, Israel, Kazakhstan, Kirghizia, AUSTRALASIA & OCEANIA, New Zealand, EUROPE, Austria, Czechoslovakia, Cyprus, Denmark, Estonia, Faroes, Finland, France, Germany, Hungary, Irish, Republic Italy, Latvia, Lithuania, Norway, Poland, Portugal, Romania, Russia, European, Caucasus, Sweden, Switzerland, Ukraine, UK, England, Scotland, Yugoslavia.


Author(s):  
J. E. M. Mordue

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.


Author(s):  

Abstract A new distribution map is provided for Venturia carpophila Fisher. Hosts: Prunus spp. Information is given on the geographical distribution in AFRICA, Ethiopia, Kenya, Morocco, Mozambique, Rhodesia, South Africa, Zambia, ASIA, Afghanistan, China (Kiangsu, Szechwan), Iraq, Japan, Korea, Pakistan, Taiwan, Turkey, USSR (Republic of Georgia), (Krasnodar), AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Azores, Britain & Northern Ireland, Bulgaria, Czechoslovakia, France, Germany, Greece (Crete), Hungary, Italy, Netherlands, Norway, Switzerland, Yugoslavia, NORTH AMERICA, Canada, USA (general), SOUTH AMERICA, Argentina, Brazil, Chile, Colombia, Peru, Uruguay.


Author(s):  
E. Punithalingam

Abstract A description is provided for Mycosphaerella mori. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Morus alba (white mulberry), M. nigra. (black mulberry). DISEASE: Leaf spot or 'Cylindrosporiosis' of mulberry. The visible symptoms are light brown to dark brown circular or irregular lesions with paler or whitish centres. Individual lesions measure 3-6 cm wide but they often coalesce to form blotches. Severe disease leads to loss of foliage. GEOGRAPHICAL DISTRIBUTION: Africa (Kenya, Libya, Zimbabwe, Malawi, South Africa, Tanzania, Uganda), Asia (India, Iraq, Malaysia, Nepal, Pakistan, Turkey, U.S.S.R. Armenia, Republic of Georgia, Tashkent); Australasia (Australia, New South Wales, Western Australia), Europe (Austria, Bulgaria, Cyprus, Denmark, France, Germany, Italy, U.K., Hungary, Malta, Yugoslavia), North America (U.S.A., Pennsylvania to Florida, Texas to West Virginia, Wisconsin); South America (Brazil, Manaus). TRANSMISSION: By conidia dispersed by rain splash. The fungus overwinters in young parts of branches (14, 265) and in debris lying on the ground.


Author(s):  

Abstract A new distribution map is provided for Pseudomonas tabaci (Wolf & Foster) Stev. & P. angulata (Fromme & Murray) Holland. Hosts: formerly map 321 Tobacco (Nicotiana tabacum). Information is given on the geographical distribution in AFRICA, Congo, Kenya, Malawi, Mauritius, Morocco, Mozambique, Rhodesia, South Africa, Tanzania, Uganda, Zambia, ASIA, China (Eastern), Formosa (Taiwan), India, Indo-China (S. Vietnam), Iran, Japan, Philippines, Turkey, USSR (Armenia; Republic of Georgia; Azerbaijan; Krasnoyarsk), AUSTRALASIA & OCEANIA, Australia (Victoria), New Zealand, EUROPE, Belgium, Bulgaria, France (S. W., Alsace), Germany, Greece, Italy, Netherlands, Poland, Romania, Switzerland, USSR (C. Russia, Crimea, Caucasus, Krasnodar, Ukraine), Yugoslavia, NORTH AMERICA, Canada (Ontario, Que), United States (General from Vt and Massachusetts To Florida, Louisiana, and Wisconsin), SOUTH AMERICA, Argentina, Brazil (Minas Gerais), Colombia, Venezuela.


Author(s):  
J. C. David

Abstract A description is provided for Ramularia bellunensis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Bud disease of pyrethrum (Tanacetum cinerariifolium) that affects those areas where it is grown as a crop (East Africa). On other hosts it causes stem and leaf lesions. HOSTS: Argyranthemum frutescens, Glebionis (Chrysanthemum) segetum, Leucanthemum vulgare, Tanacetum cinerariifolium, T. coccineum, T. corymbosum, T. parthenium (BRAUN, 1998) (Asteraceae). GEOGRAPHICAL DISTRIBUTION: AFRICA: Ethiopia, Kenya, Tanzania, Zaire. ASIA: Republic of Georgia (www.cybertruffle.org.uk/gruzmaps/index.htm). AUSTRALASIA: New Zealand (www.nzfungi.landcareresearch.co.nz). EUROPE: Germany, Great Britain, Italy, Poland, Romania, Slovak Republic (www.nt.ars-grin.gov/fungaldatabases), Ukraine (Crimea). None reported. TRANSMISSION: Wind and rain-splash dispersal of conidia. The fungus on pyrethrum colonizes the involucral scales, fragments of which can be included with the seeds (NATTRASS, 1947).


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):  
J. N. Kapoor

Abstract A description is provided for Podosphaera leucotricha. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Malus spp., chiefly on M. pumila (apple), peach (Prunus persica), quince (Cydonia ualgaris) and Photinia spp. also attacked (Hirata, 1966). Also reported on almond fruit (43, 2544). DISEASE: Powdery mildew of apple. GEOGRAPHICAL DISTRIBUTION: Africa (? Kenya, Rhodaia, South Africa, Tanzania); Asia (China, India, Israel, Japan, U.S.S.R.); Australia and New Zealand, Europe (widely distributed) North America (Canada and U.S.A.); South America (Argentina, Brazil, Chile, Colombia, Peru). (CMI map 118). TRANSMISSION: Overwinters on host as dormant mycdium in blossom buds. The role of deistothecia in overwintering is doubtful. Spread by wind-borne conidia (Anderson, 1956).


Author(s):  

Abstract A new distribution map is provided for Pyrenophora avenae Ito & Kuribay. Hosts: Oats (Avena). Information is given on the geographical distribution in AFRICA, Angola, Egypt, Kenya, Malagasy Republic, Morocco, South Africa, ASIA, China (Kiangsu), India, Israel, Japan, Nepal, Pakistan, Taiwan, Turkey, USSR (Soviet Far East, Tashkent, Tomsk), AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Britain & Northern Ireland, Bulgaria, Cyprus, Denmark, Finland, France, Germany, Irish Republic, Italy, Netherlands, Norway, Romania, Sweden, USSR (Latvia) (Byelorussia), NORTH AMERICA, Canada (general), USA (general), SOUTH AMERICA, Argentina (Buenos Aires), Brazil, Colombia, Guatemala.


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.


Sign in / Sign up

Export Citation Format

Share Document