Asterobolus: a new parasitic hyphomycete with a novel dispersal mechanism

1972 ◽  
Vol 50 (3) ◽  
pp. 409-412 ◽  
Author(s):  
Scott A. Redhead ◽  
Peter W. Perrin
Keyword(s):  
Leaf Spot ◽  
Causal Agent ◽  
Sporogenous Cell ◽  
Gaultheria Shallon ◽  
Dispersal Mechanism ◽  
Conidial Stage

The genus Asterobolus is proposed for an undescribed hyphomycete characterized by multicelled, star-shaped conidia forcibly discharged by a downfolding of the radiating appendages and rupture of the sporogenous cell. Asterobolus gaultheriae sp. nov. is the causal agent of a leaf spot of Gaultheria shallon Pursh. The fungus also infects species of Vaccinium, Pteridium, Malus, and Menziesia. Sclerotia were observed only on Gaultheria and infections of other hosts were found only near infected Gaultheria. In addition to the star-shaped conidia, a Gliocladium-like conidial stage was also observed in cultures of the fungus.

scholarly journals Antagonistic Action of Bacillus sp. AB89 to Phloeospora maculans, Causal Agent of Mulberry Leaf Spot

10.5109/24278 ◽  
1999 ◽  
Vol 43 (3/4) ◽  
pp. 337-342
Author(s):  
Kyung-Hee Kim ◽  
Shino Inoue ◽  
Masakazu Kawanami ◽  
Naruto Furuya ◽  
Nobuaki Matsuyama
Keyword(s):  
Leaf Spot ◽  
Causal Agent ◽  
Bacillus Sp ◽  
Antagonistic Action ◽  
Mulberry Leaf

Lophomerum ponticum. [Descriptions of Fungi and Bacteria].

1984 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Great Britain ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Causal Agent ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Green Leaves ◽  
Rhododendron Ponticum

Abstract A description is provided for Lophomerum ponticum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Rhododendron ponticum. DISEASE: Leaf spot of rhododendron. In general Lophomerum ponticum appears to be saprophytic. Its ascocarps are usually not produced until the leaves have senesced, become detached and fallen to the litter. Occasionally, however, ascocarps can be found on browned regions of otherwise green leaves, and it seems possible, therefore, that the species is facultatively parasitic. It is important to distinguish this species from Lophodermium vagulum (CMI Descriptions 789) which is the causal agent of a leaf spot disease of chinese rhododendrons, but which does not occur on R. ponticum. GEOGRAPHICAL DISTRIBUTION: Europe (Great Britain), probably much more widespread. TRANSMISSION: By air-borne ascospores in wet or humid weather.

Cercospora zeina is the causal agent of grey leaf spot disease of maize in southern Africa

2009 ◽  
Vol 124 (4) ◽  
pp. 577-583 ◽  
Author(s):  
Barbara Meisel ◽  
Jeanne Korsman ◽  
Frederik J. Kloppers ◽  
Dave K. Berger
Keyword(s):  
Southern Africa ◽  
Leaf Spot ◽  
Causal Agent ◽  
Leaf Spot Disease ◽  
Grey Leaf Spot ◽  
Spot Disease ◽  
Cercospora Zeina

Characterization of Exserohilum rostratum, a new causal agent of banana leaf spot disease in China

2011 ◽  
Vol 40 (3) ◽  
pp. 246-259 ◽  
Author(s):  
Shan-Hai Lin ◽  
Si-Liang Huang ◽  
Qi-Qin Li ◽  
Chun-Jin Hu ◽  
Gang Fu ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Causal Agent ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Exserohilum Rostratum ◽  
Banana Leaf

First Report of Leaf Smut of Gaillardia × grandiflora Caused by Entyloma gaillardianum in North America

2010 ◽  
Vol 11 (1) ◽  
pp. 51 ◽  
Author(s):  
Dean A. Glawe ◽  
Tess Barlow ◽  
Steven T. Koike
Keyword(s):  
North America ◽  
Leaf Spot ◽  
Its Region ◽  
Morphological Features ◽  
Causal Agent ◽  
Leaf Spot Disease ◽  
First Report ◽  
Spot Disease ◽  
Leaf Smut

In the summer of 2009, a leaf spot disease occurred on 100% of Gaillardia × grandiflora cv. Goblin in a commercial nursery in coastal Monterey Co., CA. Nearly all of the affected plants were unsalable. The causal agent was determined to be Entyloma gaillardianum based on morphological features, host, and ITS region. This species has not been reported previously from this host in North America. Accepted for publication 16 March 2010. Published 28 April 2010.

Sign in / Sign up

Export Citation Format

Share Document