Dynamics of Powdery Mildew (Erysiphe trifolii) Disease of Lentil Influenced by Sulphur and Zinc Nutrition

2013 ◽  
Vol 12 (2) ◽  
pp. 71-77 ◽  
Author(s):  
Anil Kumar Singh ◽  
B.P. Bhatt ◽  
K.M. Singh ◽  
Abhay Kumar ◽  
Manibhushan . ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Erysiphe Trifolii ◽  
Zinc Nutrition

Potential of Residual Sulfur and Zinc Nutrition in Improving Powdery Mildew (Erysiphe trifolii) Disease Tolerance of Lentil (Lens culunarisL.)

2014 ◽  
Vol 45 (21) ◽  
pp. 2807-2818 ◽  
Author(s):  
Anil Kumar Singh ◽  
K. M. Singh ◽  
R. C. Bharati ◽  
Naresh Chandra ◽  
B. P. Bhatt ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Disease Tolerance ◽  
Residual Sulfur ◽  
Erysiphe Trifolii ◽  
Zinc Nutrition

scholarly journals Erysiphe trifolii Causing Powdery Mildew of Lentil (Lens culinaris)

Plant Disease ◽  
2009 ◽  
Vol 93 (8) ◽  
pp. 797-803 ◽  
Author(s):  
Renuka N. Attanayake ◽  
Dean A. Glawe ◽  
Frank M. Dugan ◽  
Weidong Chen
Keyword(s):  
Powdery Mildew ◽  
Pacific Northwest ◽  
The United States ◽  
Morphological Characters ◽  
Grain Legumes ◽  
Its Sequences ◽  
Powdery Mildew Fungus ◽  
The Pacific ◽  
Soybean Genotypes ◽  
Erysiphe Trifolii

The taxonomy of the powdery mildew fungus infecting lentil in the Pacific Northwest (PNW) of the United States was investigated on the basis of morphology and rDNA internal transcribed spacer (ITS) sequences. Anamorphic characters were in close agreement with descriptions of Erysiphe trifolii. However, teleomorphs formed chasmothecial appendages with highly branched apices, whereas E. trifolii has been described as producing flexuous or sometimes loosely branched appendages. Branched appendages have been described in Erysiphe diffusa, a fungus reported from species of Lens, Glycine, and Sophora, raising the possibility that the PNW fungus could be E. diffusa. Examination of morphological characters of an authentic specimen of E. trifolii from Austria determined that it included chasmothecial appendages resembling those seen in PNW specimens. Furthermore, ITS sequences from five powdery mildew samples collected from lentils in PNW greenhouses and fields from 2006 to 2008 were identical to one another, and exhibited higher similarity to sequences of E. trifolii (99%) than to those of any other Erysiphe spp. available in GenBank. Parsimony analysis grouped the lentil powdery mildew into a clade with Erysiphe baeumleri, E. trifolii, and E. trifolii–like Oidium sp., but indicated a more distant relationship to E. diffusa. In greenhouse inoculation studies, the lentil powdery mildew fungus did not infect soybean genotypes known to be susceptible to E. diffusa. The pathogenicity of E. trifolii on lentil was confirmed using modified Koch's postulates. This is the first report of E. trifolii infecting lentil. E. diffusa and E. trifolii have different host ranges, so the discovery of E. trifolii on lentil has implications both for determining species of powdery mildews on cool-season grain legumes, and in disease management.

Erysiphe trifolii. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. N. Kapoor
Keyword(s):  
New Zealand ◽  
Powdery Mildew ◽  
Geographical Distribution ◽  
Erysiphe Trifolii

Abstract A description is provided for Erysiphe trifolii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On numerous Leguminosae. Common on Trifolium, Lathyrus, Onobrychis. Occasionally on Astragalus, Caragna, Coronilla, Galega, Genista, Lotus, Lupinus, Psoralca, Robinia, Sarothamaus, Tetragonolobus, Wistaria. DISEASE: Powdery mildew of clover. GEOGRAPHICAL DISTRIBUTION: Africa (Rhodesia, Tanzania); Asia (China, Formosa, India, Israel, Japan, U.S.S.R.); Australia; Canada; New Zealand; U.S.A. (Hirata, 1966). TRANSMISSION: Persists on foliage under favourable conditions.

scholarly journals Erysiphe trifolii- a newly recognized powdery mildew pathogen of pea

2010 ◽  
Vol 59 (4) ◽  
pp. 712-720 ◽  
Author(s):  
R. N. Attanayake ◽  
D. A. Glawe ◽  
K. E. McPhee ◽  
F. M. Dugan ◽  
W. Chen
Keyword(s):  
Powdery Mildew ◽  
Erysiphe Trifolii ◽  
Powdery Mildew Pathogen

scholarly journals The occurrence of Erysiphe trifolii on Lathyrus pratensis in a foothill area of South Bohemia

2011 ◽  
Vol 28 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Milan Kobes ◽  
Bohumila Voženílková ◽  
Martin Šlachta ◽  
Jan Frelich
Keyword(s):  
Powdery Mildew ◽  
Vegetation Period ◽  
Statistical Evidence ◽  
Etiological Agent ◽  
Management Systems ◽  
Significant Growth ◽  
Permanent Grassland ◽  
Characteristic Symptom ◽  
Erysiphe Trifolii ◽  
South Bohemia

The occurrence of Erysiphe trifolii on Lathyrus pratensis in a foothill area of South BohemiaThe aim of small-site experiments carried out in the foothills of the Šumava Mts. was to determine the effect of the etiological agent powdery mildew (Erysiphe trifolii) on meadow peavine (Lathyrus pratensis). Over three consecutive years, we observed a whitish to grey-white soft cover of mycelium on the meadow peavine during the vegetation period. This characteristic symptom of the disease was observed on the plants during summer and autumn. In a plot trial with permanent grassland we evaluated the following management systems: i) mulched, ii) fallow, iii) mown stands, and iv) pasture stands grazed by cattle. We evaluated the total number of Lathyrus pratensis plants as well as the number of the plants attacked by Erysiphe trifolii. The three-year investigation of Lathyrus pratensis yielded statistical evidence that the most significant growth of the fungal disease was recorded in fallow stands (68.9%), while the lowest occurrence of the disease (4.4%) was found in the pasture stands grazed by cattle.

Microscopy studies of powdery mildew on summer squash

1991 ◽  
Vol 49 ◽  
pp. 520-521
Author(s):  
John S. Gardner ◽  
W. M. Hess
Keyword(s):  
Powdery Mildew ◽  
Tip Growth ◽  
Hyphal Growth ◽  
Plant Tissues ◽  
Vegetative Hypha ◽  
Powdery Mildews ◽  
Summer Squash ◽  
Conidial Formation ◽  
Polar Tip Growth ◽  
Short Conidiophore

Powdery mildews are characterized by the appearance of spots or patches of a white to grayish, powdery, mildewy growth on plant tissues, entire leaves or other organs. Ervsiphe cichoracearum, the powdery mildew of cucurbits is among the most serious parasites, and the most common. The conidia are formed similar to the process described for Ervsiphe graminis by Cole and Samson. Theconidial chains mature basipetally from a short, conidiophore mother-cell at the base of the fertile hypha which arises holoblastically from the conidiophore. During early development it probably elongates by polar-tip growth like a vegetative hypha. A septum forms just above the conidiophore apex. Additional septa develop in acropetal succession. However, the conidia of E. cichoracearum are more doliform than condia from E. graminis. The purpose of these investigations was to use scanning electron microscopy (SEM) to demonstrate the nature of hyphal growth and conidial formation of E. cichoracearum on field-grown squash leaves.

Chromosomal location of genes for resistance to powdery mildew in Chinese wheat lines Jieyan 94-1-1 and Siyan 94-1-2

Hereditas ◽  
2002 ◽  
Vol 136 (3) ◽  
pp. 212-218 ◽  
Author(s):  
XIU QIANG HUANG ◽  
SAI L. K. HSAM ◽  
FRIEDRICH J. ZELLER
Keyword(s):  
Powdery Mildew ◽  
Chromosomal Location ◽  
Wheat Lines ◽  
Chinese Wheat

Incidence of powdery mildew on cucurbit plants in Katsina, Nigeria

2019 ◽  
pp. 05-09
Keyword(s):  
Powdery Mildew ◽  
Low Cost ◽  
Frequency Of Occurrence ◽  
Sphaerotheca Fuliginea ◽  
Causal Organism ◽  
Powdery Mildews ◽  
Powdery Mildew Disease ◽  
Important Disease

The presence study deals with powdery mildews in various cucurbits in Katsina city (Barhim Estate, Kofar Durbi, Kofar Sauri, Kofar Marusa and Low Cost), Nigeria. The finding shows that the areas infested with powdery mildew is one of the important disease of cucurbits. The Sphaerotheca fuliginea was identified to be the causal organism present on all observed cucurbits in the study. Highest frequency of disease was found in Kofar Sauri(79%) fallowed by Kofar Marusa (68%), Kofar Durbi (66%), Barhim Estate (65%) and the lowest frequency of occurrence of disease was found in Low Cost (55%).The intensity of the disease was moderate to severe in general but it was high in many fields, the area-wise variation was also noticed. On vegetables, the highest frequency of occurrence of powdery mildew disease was observed on L. cylindrica (76.4%) followed by C. moschata (60%), C. sativus (59.3%), C. vulgaris (53.9%) and lowest was found on C. melo (44.4%). The highest intensity of disease was found on C. moschata, followed by L. cylindrica, C. sativus, C. vulgaris and C. melo.

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