First Report of Powdery Mildew of Carrot and Parsley Caused by Erysiphe heraclei in Washington State

2005 ◽  
Vol 6 (1) ◽  
pp. 35 ◽  
Author(s):  
Dean A. Glawe ◽  
Gary Q. Pelter ◽  
Lindsey J. du Toit
Keyword(s):  
Powdery Mildew ◽  
Washington State ◽  
Home Garden ◽  
First Report

From 2002 to 2004, the anamorph of Erysiphe heraclei DC was observed on plants from processing carrot fields in central WA. The teleomorph, not previously reported in Washington, was discovered in a processing carrot field in Grant Co. A fungus matching the description of the anamorph of E. heraclei also was found attacking parsley in a home garden in Grant Co. This report documents the occurrence of E. heraclei and its teleomorph on carrot in WA and the occurrence of E. heraclei on parsley in WA. Accepted for publication 10 January 2005. Published 14 January 2005.

First Report of Powdery Mildew of Platanus occidentalis caused by Microsphaera platani (Erysiphe platani) in Washington State

2003 ◽  
Vol 4 (1) ◽  
pp. 33 ◽  
Author(s):  
Dean A. Glawe
Keyword(s):  
North America ◽  
Powdery Mildew ◽  
Native Species ◽  
Washington State ◽  
Eastern North America ◽  
First Report ◽  
Platanus Occidentalis

American sycamore (Platanus occidentalis L.) is a common native species in eastern North America and is planted widely as a landscape tree in other regions. During a survey of powdery mildew diseases in Washington State, the fungus Microsphaera platani Howe was found on American sycamore trees in Madison Park, Seattle. This report documents the presence of M. platani in Washington State and presents information on the fungus. Accepted for publication 30 July 2003. Published 18 August 2003.

First Report of Powdery Mildew of Myosotis sylvatica (Wood Forget-me-not) Caused by Golovinomyces cynoglossi (Erysiphe cynoglossi) in Washington State

2004 ◽  
Vol 5 (1) ◽  
pp. 18
Author(s):  
Dean A. Glawe
Keyword(s):  
Powdery Mildew ◽  
Pacific Northwest ◽  
Washington State ◽  
Causal Organism ◽  
First Report ◽  
The Pacific ◽  
Western Washington ◽  
Symptoms And Signs

Wood forget-me-not cultivars are popular ornamentals in the Pacific Northwest. In western Washington, this species frequently displays symptoms and signs of powdery mildew after anthesis. This report records the disease from King, Pierce, Snohomish, and Skagit counties and describes and illustrates symptoms of the disease as well as taxonomically important features of the causal organism. Accepted for publication 29 October 2004. Published 24 November 2004.

First Report of Powdery Mildew of Chickpea (Cicer arietinum) Caused by Leveillula taurica in Washington State

2008 ◽  
Vol 9 (1) ◽  
pp. 45 ◽  
Author(s):  
K. P. R. N. Attanayake ◽  
D. A. Glawe ◽  
K. E. McPhee ◽  
F. M. Dugan ◽  
W. Chen
Keyword(s):  
Powdery Mildew ◽  
Cicer Arietinum ◽  
First Record ◽  
Washington State ◽  
First Report ◽  
Leveillula Taurica ◽  
High Incidence ◽  
Former Ussr ◽  
Chickpea Cultivars

In Oct. 2007, powdery mildew was found in chickpea fields in an experimental farm near Pullman, Whitman County, Washington. Although disease signs were observed on all chickpea cultivars in the fields, high incidence was seen only on cvs. Dwelley and Spanish White. To our knowledge this is the first record of powdery mildew caused by Leveillula taurica on chickpea in WA. The pathogen has also been reported from chickpea in California and elsewhere, e.g., Ethiopia, India, Iran, Morocco, Pakistan, Sudan, Turkey, and the former USSR. Accepted for publication 4 May 2008. Published 2 July 2008.

First Report of Podosphaera alpina f. alpina on Tolmiea menziesii in Washington State and British Columbia

2009 ◽  
Vol 10 (1) ◽  
pp. 42
Author(s):  
Lydia S. Putnicki ◽  
Dean A. Glawe
Keyword(s):  
British Columbia ◽  
Powdery Mildew ◽  
Washington State ◽  
Causal Agent ◽  
Understory Species ◽  
First Report

Tolmiea menziesii (Pursh) Torr. & A. Gray (Saxifragaceae, piggyback plant) is an understory species typically sold as an ornamental houseplant. We recently made several collections of T. menzii in Washington and British Columbia with powdery mildew symptoms and determined the causal agent to be Podosphaera alpina f. alpina (U. Braun) U. Braun & S. Takam. This is the first report of this fungus on T. menziesii in Washington and British Columbia. Accepted for publication 5 June 2009. Published 10 August 2009.

First Report of Powdery Mildew of Onion (Allium cepa) Caused by Leveillula taurica in the Pacific Northwest

2004 ◽  
Vol 5 (1) ◽  
pp. 17 ◽  
Author(s):  
Lindsey J. du Toit ◽  
Dean A. Glawe ◽  
Gary Q. Pelter
Keyword(s):  
Powdery Mildew ◽  
Pacific Northwest ◽  
Allium Cepa ◽  
Washington State ◽  
Causal Agent ◽  
Columbia Basin ◽  
First Report ◽  
Leveillula Taurica ◽  
The Pacific ◽  
Published Report

A powdery mildew disease of onion has been observed infrequently in the Columbia Basin of Washington State since 1996, but this is the first published report of this disease in the Pacific Northwest. The causal agent was determined to be Leveillula taurica (Lév.) G. Arnaud. Accepted for publication 29 October 2004. Published 29 November 2004.

scholarly journals First Report of Powdery Mildew of Mahonia aquifolium (Pursh.) Nutt. Caused by Erysiphe (Microsphaera) berberidis (DC.) Lév in Canada

2005 ◽  
Vol 6 (1) ◽  
pp. 29
Author(s):  
Shiguang Zhao ◽  
Simon F. Shamoun
Keyword(s):  
British Columbia ◽  
Powdery Mildew ◽  
Pacific Northwest ◽  
First Record ◽  
Early Summer ◽  
Washington State ◽  
First Report ◽  
The Usa ◽  
Mahonia Aquifolium ◽  
Oregon Grape

Mahonia aquifolium (Tall Oregon Grape) is a plant native to British Columbia and the coastal Pacific Northwest of the USA. The first discovery of powdery mildew of Mahonia aquifolium in the USA was reported in Washington State in 2003. In Canada, powdery mildew of Oregon grape was discovered in the early summer of 2004 in Victoria, BC. To our knowledge, this is the first record of powdery mildew caused by E. berberidis on Oregon grape in Canada. Accepted for publication 15 May 2005. Published 21 June 2005.

First report of Podosphaera fusca causing powdery mildew on asparagus bean in Taiwan

2021 ◽  
Author(s):  
Yi-Ting Xiao ◽  
Chao-Jen Wang ◽  
Tung-Chin Huang ◽  
Yuan-Min Shen
Keyword(s):  
Powdery Mildew ◽  
First Report ◽  
Asparagus Bean ◽  
Podosphaera Fusca

First Report of Powdery Mildew of Kalanchoe blossfeldiana caused by Sphaerotheca fuliginea (Podosphaera fuliginea) in the Pacific Northwest

2003 ◽  
Vol 4 (1) ◽  
pp. 39
Author(s):  
Dean A. Glawe ◽  
Rita Hummel ◽  
Grace Jack
Keyword(s):  
Powdery Mildew ◽  
Pacific Northwest ◽  
Sphaerotheca Fuliginea ◽  
First Report ◽  
Major Disease ◽  
The Pacific ◽  
Kalanchoe Blossfeldiana ◽  
Extension Center ◽  
Kalanchoë Blossfeldiana

Kalanchoe blossfeldiana Poelln. is a common ornamental houseplant. Although powdery mildew is a major disease of this species, there are no published reports of it in the Pacific Northwest. In August, 2002, powdery mildew was observed on six indoor K. blossfeldiana plants in an office and adjacent laboratory at the Puyallup Research and Extension Center. Accepted for publication 25 March 2003. Published 17 April 2003.

scholarly journals First report of Podosphaera pannosa causing powdery mildew on Rosa chinensis in Brazil

2020 ◽  
Vol 102 (3) ◽  
pp. 933-933
Author(s):  
Wéverson Lima Fonseca ◽  
José Emilson Cardoso ◽  
Cristiano Souza Lima ◽  
Francisco Marto Pinto Viana ◽  
Márcio Akio Ootani ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
First Report ◽  
Rosa Chinensis

scholarly journals Further Support of Conspecificity of Oak and Mango Powdery Mildew and First Report of Erysiphe quercicola and Erysiphe alphitoides on Mango in Mainland Europe

Plant Disease ◽  
2017 ◽  
Vol 101 (7) ◽  
pp. 1086-1093 ◽  
Author(s):  
Marie-Laure Desprez-Loustau ◽  
Marie Massot ◽  
Nicolas Feau ◽  
Tania Fort ◽  
Antonio de Vicente ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Host Range ◽  
Molecular Mechanisms ◽  
Single Copy ◽  
Broad Host Range ◽  
First Report ◽  
Erysiphe Quercicola ◽  
Powdery Mildews ◽  
Mango Leaves ◽  
Practical Implications

Mango leaves and inflorescences infected by powdery mildew in southern Spain were analyzed using multigene sequencing (ITS + 4 single-copy coding genes) to identify the causal agent. Erysiphe quercicola was detected in 97% out of 140 samples, collected in six different orchards in the Malaga region. Among these, a small proportion also yielded E. alphitoides (8% of all samples) and E. alphitoides was found alone in 3% of samples. A phylogenetic approach was completed by cross inoculations between oak and mango, which led to typical symptoms, supporting the conspecificity of oak and mango powdery mildews. To our knowledge, this is the first report of E. quercicola and E. alphitoides causing powdery mildew on mango trees in mainland Spain, and thus mainland Europe, based on unequivocal phylogenetic and biological evidence. Our study thus confirmed the broad host range of both E. quercicola and E. alphitoides. These results have practical implications in terms of the demonstrated ability for host range expansion in powdery mildews. They also open interesting prospects to the elucidation of molecular mechanisms underlying the ability to infect single versus multiple and unrelated host plants since these two closely related powdery mildew species belong to a small clade with both generalist and specialist powdery mildews.

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