Albugo ipomoeae-panduratae. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
K. G. Mukerji
Keyword(s):  
Geographical Distribution ◽  
Ipomoea Batatas ◽  
Middle Eastern ◽  
Far East ◽  
Water Spinach ◽  
White Rust ◽  
Flower Abortion ◽  
Water Dispersal ◽  
White Blister ◽  
White Blister Rust

Abstract A description is provided for Albugo ipomoeae-panduratae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On members of the Convolvulaceae, especially on species of Ipomoea (Quamoclit, Merremia) and Convolvulus. Economic hosts include Ipomoea batatas (sweet potato, I. pes-tigridis and probably I. aquatic (= I. replans - water spinach); I. horsfalliae, I. purpurea and Calonyction aculeatum are amongst ormentals attacked. DISEASE: White rust of sweet potitto. common white (blister) rust of Ipomoca (Convolvulus etc.). Sporangial pustules are produced on lower leaf surfaces, (petioles, stem and flowers), separately from the oospores, the latter often developing in pronounced swellings, galls or elongated tumour-like growths of stem and branches (flowers, petioles, roots) (Singh & Bedi, 1966; Farlow, 1889). The disease may cause trailing species to assume an upright habit (11, 545) and individual branches may show a witches broom effect. Diseased plants can also exhibit chlorosis, general distortion, defoliation and flower abortion (Singh & Bedi, 1965, 1966; Harter & Weimer, 1929). GEOGRAPHICAL DISTRIBUTION: Widespread on Ipomoea and Convolvulus spp. in tropical and warmer temperate regions. Main areas incluide North America (USA), tropical and South America (most countries); Africa (Moroco, Sudan and countries south of Sahara); S.W. Europe (S. France, Italy, Malta); S.W. USSR (Azerbaijan, Turkmenistan, Uzbekistan) and Asia (India, Pakistan and Far East); Australia (Queensland) and Pacific. Apparently not recorded in S.E. Europe, nor in Middle Eastern countries from Egypt through to Afghanistan. See under notes for distribution on I. batatas. TRANSMISSION: By air-borne sporangia and by short distance water dispersal of sporangia and zoospores. Initial infection by oospores from overwintered host tissue can occur (Harter & Weimer, 1929; 39, 750).

Albugo candida. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
K. G. Mukerji
Keyword(s):  
Geographical Distribution ◽  
Primary Infection ◽  
World Wide ◽  
Plant Debris ◽  
Albugo Candida ◽  
White Rust ◽  
Previous Crop ◽  
White Blister

Abstract A description is provided for Albugo candida. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On members of Cruciferae and Capparidaceae and also on leaves of Reseda alba (Jorstad, 1964). DISEASE: White blister or white rust of crucifers. Infection occurs mostly in young plants. White chalky pustules present all over the plant except the roots. Often causes damage to cabbage and its varieties and other crucifers (25, 416; 32, 100; 39, 334; 51, 813). The attacked parts often show marked hypertrophy, especially of the inflorescence. In rare instances galls have been found on roots of radish, contining oospores and globular haustoria (30, 194; 32, 81, 192; 33, 459). GEOGRAPHICAL DISTRIBUTION: World wide where hosts are present. TRANSMISSION: Primary infection is by zoospores from germinating zoospores left in the soil or plant debris from a previous crop (Butler & Jones, 1949; 34, 69, 336; 38, 582; 39, 753). Wind-borne sporangia also germinate by formation of zoospores.

scholarly journals The Arabidopsis WRR4A and WRR4B paralogous NLR proteins both confer recognition of multiple Albugo candida effectors

2021 ◽  
Author(s):  
Amey Redkar ◽  
Volkan Cevik ◽  
Kate Bailey ◽  
Oliver J. Furzer ◽  
Sebastian Fairhead ◽  
...  
Keyword(s):  
Resistance Proteins ◽  
Albugo Candida ◽  
Secretion Signal ◽  
White Rust ◽  
Brassica Crops ◽  
Broad Spectrum Resistance ◽  
White Blister ◽  
White Blister Rust ◽  
Race 4 ◽  
Important Disease

The oomycete Albugo candida causes white blister rust, an important disease of Brassica crops. Distinct races of A. candida are defined by their specificity for infecting different host species. The White Rust Resistance 4 (WRR4) locus in Col-0 accession of Arabidopsis thaliana contains three genes that encode TIR-NLR resistance proteins. The Col-0 alleles of WRR4A and WRR4B confer resistance to at least four A. candida races (2, 7 and 9 from B. juncea, B. rapa and B. oleracea, respectively, and Race 4 from Capsella bursa-pastoris). Resistance mediated by both paralogs can be overcome by Col-0-virulent isolates of Race 4. After comparing repertoires of candidate effectors in resisted and resistance-breaking strains, we used transient co-expression in tobacco or Arabidopsis to identify effectors recognized by WRR4A and WRR4B. A library of CCG effectors from four A. candida races was screened for WRR4A- or WRR4B- dependent elicitation of hypersensitive response (HR). These CCG genes were validated for WRR-dependent HR by bombardment assays in wild type Col-0, wrr4A or wrr4B mutants. Our analysis revealed eight WRR4A-recognized CCGs and four WRR4B-recognized CCGs. Remarkably, the N-terminal region of 100 amino acids after the secretion signal is sufficient for WRR4A recognition of these eight recognized effectors. This multiple recognition capacity potentially explains the broad-spectrum resistance to many A. candida races conferred by WRR4 paralogs.

Arthrocladiella mougeotii. [Descriptions of Fungi and Bacteria].

1998 ◽  
Author(s):  
V. P. Heluta
Keyword(s):  
Czech Republic ◽  
Geographical Distribution ◽  
Disease Transmission ◽  
Russian Far East ◽  
Far East ◽  
Republic Of Georgia ◽  
Lycium Barbarum ◽  
Initial Stage ◽  
High Infection

Abstract A description is provided for Arthrocladiella mougeotii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Powdery mildew of Lycium species only. The mycelium, conidiophores, conidia and ascomata form first white, then dirty-grey patches on damaged green parts of the host. Infected parts are deformed slightly and, in cases of high infection, plants can lose their ornamental qualities. Damaged leaves can fall prematurely. HOSTS: Lycium barbarum (= L. europaeum), L. chinense, L. dasystemum, L. halimifolium, L. ovatum, L. potaninii, L. rhombifolium, L. ruthenicum. [Type host - Lycium barbarum] GEOGRAPHICAL DISTRIBUTION: Africa: Canary Islands. Asia (temperate areas only): Armenia, Azerbaijan, China, Republic of Georgia, Israel, Japan, Kazakhstan, Kirghizistan, Korea, Russia (Russian far east), Tadzhikistan, Taiwan, Turkey, Turkmenistan, Uzbekistan. Australasia: New Zealand (introduced). Europe: Austria, Belgium, Bulgaria, Czech Republic, Estonia, France, Germany, Hungary, Italy, Netherlands, Norway, Poland, Rumania, Slovakia, Sweden, Switzerland, UK, Ukraine (southern), former Yugoslavia. North America: USA (introduced). TRANSMISSION: By wind-dispersed conidia. The rôle of ascospores in disease transmission is unknown, although it has been supposed that they can cause the initial stage of the disease.

Agrilus fleischeri. [Distribution map].

2019 ◽  
Author(s):  
Keyword(s):  
Geographical Distribution ◽  
Russian Far East ◽  
Far East ◽  
Distribution Map ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Agrilus fleischeri Obenberger. Coleoptera: Buprestidae. Hosts: poplar (Populus spp.). Information is given on the geographical distribution in Europe (Russia, Siberia, Russian Far East) and Asia (China, Hebei, Heilongjiang, Liaoning, Shaanxi, Sichuan, Japan, Hokkaido, Honshu, Kazakhstan, Korea Democratic People's Republic, Korea Republic, Mongolia).

Torula herbarum. [Descriptions of Fungi and Bacteria].

2003 ◽  
Author(s):  
E. V. Bogomolova
Keyword(s):  
New York ◽  
South Carolina ◽  
Geographical Distribution ◽  
New Caledonia ◽  
Russian Far East ◽  
Far East ◽  
Uttar Pradesh ◽  
Gold Coast ◽  
Siliceous Rock ◽  
Nasal Swabs

Abstract A description is provided for Torula herbarum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf and stem spots in plants; foot-rot of coriander; stem blight in Zizyphus mauritiana (small brown specks on bark near cut ends of branches, these spots enlarging into dark brown lesions and coalescing within 10-15 days, further stages being characterized by black broad strips of lesions, which progress towards the basal part of the tree); destruction of paper; biodeterioration of marble; decomposition of soil organic matter. HOSTS: Very common on or in dead herbaceous stems, wood (including artefacts such as baskets, cloth and furniture), soil, air, calcareous and siliceous rock, and artefacts such as concrete, linoleum, paper, sacking material and tiles. The fungus has also been observed in association with many other fungi. There are two records of this fungus being isolated from nasal swabs of Equus equus. GEOGRAPHICAL DISTRIBUTION: Cosmopolitan. AFRICA: Ethiopia, Ghana [as Gold Coast], Kenya, Malawi, Nigeria, Sierra Leone, South Africa (Transvaal), Tanzania, Uganda, Zambia [as Northern Rhodesia]. NORTH AMERICA: Canada (Ontario, Saskatchewan), USA (California, Colorado, Kansas, New Jersey, New York, Ohio, South Carolina, Texas, West Virginia). CENTRAL AMERICA: Cuba, Dominican Republic, Jamaica, Panama. SOUTH AMERICA: Argentina, Brazil (Pernambuco), Chile, Venezuela. ASIA: Bangladesh, China (Shaanxi, Zhejiang), Cyprus, India (Andhra Pradesh, Madhya Pradesh, Maharashtra, Uttar Pradesh), Japan, Malaysia, Pakistan, Philippines, Russia (Russian Far East), Sabah, Sarawak, Sri Lanka, Taiwan. AUSTRALASIA: Australia (Queensland, Victoria), New Caledonia, New Zealand. EUROPE: Austria, Belgium, Czech Republic, Denmark, France, Germany, Great Britain, Greece, Ireland, Italy, Netherlands, Poland, Russia, Sweden, Ukraine. TRANSMISSION: By dissemination of air-borne conidia.

Rhizopus stolonifer. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
A. K. Sarbhoy
Keyword(s):  
Drosophila Melanogaster ◽  
Sweet Potato ◽  
Geographical Distribution ◽  
Ipomoea Batatas ◽  
World Wide ◽  
Rhizosphere Soil ◽  
Fruit Flies ◽  
Fruit Rot ◽  
Rhizopus Stolonifer ◽  
Artocarpus Integrifolia

Abstract A description is provided for Rhizopus stolonifer. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On fruits: papaya, plum, strawberry, sweet potato, cotton, groundnuts and in rhizosphere soil of various plants, soil and decaying leaves. DISEASE: Causing fruit rot of plum, Jak fruit (Artocarpus integrifolia[Artocarpus integer]), strawberry ('leak'), peach and a rot of sweet potato (Ipomoea batatas) and cotton bolls. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Air-borne and also by fruit flies, Drosophila melanogaster, associated with decaying fruit (RAM 43, 576).

Pyrenophora avenae. [Distribution map].

1976 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
North America ◽  
Northern Ireland ◽  
South America ◽  
Geographical Distribution ◽  
Buenos Aires ◽  
Far East ◽  
Distribution Map ◽  
New Distribution

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.

Streptomyces ipomoeae. [Distribution map].

1975 ◽  
Author(s):  
Keyword(s):  
New Jersey ◽  
North America ◽  
Sweet Potato ◽  
Geographical Distribution ◽  
Ipomoea Batatas ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Streptomyces ipomoeae (Person & W. J. Martin) Waksm. & Henrici. Hosts: Sweet potato (Ipomoea batatas). Information is given on the geographical distribution in NORTH AMERICA, USA (general from New Jersey to Florida, Tex and Iowa, also Arizona, California).

Anthracoidea buxbaumii. [Descriptions of Fungi and Bacteria].

2010 ◽  
Author(s):  
C. M. Denchev
Keyword(s):  
British Columbia ◽  
Geographical Distribution ◽  
Conservation Status ◽  
Far East ◽  
West Siberia ◽  
Severe Damage ◽  
East West

Abstract A description is provided for Anthracoidea buxbaumii, which sometimes causes severe damage to Carex sp. Some information on its morphology, dispersal and transmission and conservation status are given, along with details of its geographical distribution (Canada (Alberta, British Columbia, Newfoundland, Ontario, Quebec), USA (Alaska), Japan, Russia (Far East, West Siberia), Estonia, Finland, Lithuania, Norway, Poland, Romania, Slovakia and Sweden) and hosts (C. adelostoma, C. buxbaumii subsp. alpina, C. buxbaumii, C. gmelinii, C. hartmanii and C. tarumensis).

Anthracoidea globularis. [Descriptions of Fungi and Bacteria].

2010 ◽  
Author(s):  
C. M. Denchev
Keyword(s):  
Geographical Distribution ◽  
Conservation Status ◽  
Far East ◽  
West Siberia ◽  
Severe Damage ◽  
East Siberia ◽  
East West

Abstract A description is provided for Anthracoidea globularis, which causes severe damage to Carex sp. Some information on its morphology, dispersal and transmission and conservation status are given, along with details of its geographical distribution (Japan, Russia (East Siberia, Far East, West Siberia), Finland, Norway and Sweden) and host (C. globularis).

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