Molecular Phylogeny of Dogwood Anthracnose Fungus (Discula destructiva) and the Diaporthales

Mycologia ◽  
2001 ◽  
Vol 93 (2) ◽  
pp. 355 ◽  
Author(s):  
Ning Zhang ◽  
Meredith Blackwell
Keyword(s):  
Molecular Phylogeny ◽  
Discula Destructiva ◽  
Dogwood Anthracnose ◽  
Dogwood Anthracnose Fungus

Molecular phylogeny of dogwood anthracnose fungus (Discula destructiva) and the Diaporthales

Mycologia ◽  
2001 ◽  
Vol 93 (2) ◽  
pp. 355-365 ◽  
Author(s):  
Ning Zhang ◽  
Meredith Blackwell
Keyword(s):  
Molecular Phylogeny ◽  
Discula Destructiva ◽  
Dogwood Anthracnose ◽  
Dogwood Anthracnose Fungus

Incidence of Arthropods Infested with Conidia of the Dogwood Anthracnose Fungus, Discula destructiva Redlin, on Flowering Dogwoods in the Natural Environment

1998 ◽  
Vol 33 (4) ◽  
pp. 329-335
Author(s):  
H. Lee Holt ◽  
Jerome F. Grant ◽  
Mark T. Windham
Keyword(s):  
Disease Severity ◽  
Natural Environment ◽  
National Park ◽  
Causal Agent ◽  
Great Smoky Mountains ◽  
Discula Destructiva ◽  
Smoky Mountains ◽  
Dogwood Anthracnose ◽  
Dogwood Anthracnose Fungus

Arthropods were collected from flowering dogwoods infected with Discula destructiva Redlin, causal agent of dogwood anthracnose, to evaluate their ability to transport viable conidia. During 1994, 7.2% of all arthropods collected (n = 375) from diseased trees at three sites in the Great Smoky Mountains National Park were carrying viable conidia of D. destructiva. Most [92.6% (25/27)] of the conidia-infested arthropods were collected during June when sporulation and spread of dogwood anthracnose were increasing. From July through September, the expansion of disease severity and incidence of sporulation diminished and the frequency of conidia-infested arthropods decreased. Several species of arthropods with viable conidia of D. destructiva were collected lending support to the hypothesis that insects and other arthropods may play a role in the spread of dogwood anthracnose.

Effect of acid deposition on trichome morphology and dogwood anthracnose biology

1992 ◽  
Vol 50 (1) ◽  
pp. 840-841
Author(s):  
Kyle T. Thornham ◽  
R. Jay Stipes ◽  
Randolph L. Grayson
Keyword(s):  
Acid Deposition ◽  
Disease Incidence ◽  
Natural Populations ◽  
Tree Disease ◽  
Flowering Dogwood ◽  
Discula Destructiva ◽  
Disease Induction ◽  
Dogwood Anthracnose ◽  
Trichome Morphology ◽  
Precipitation Events

Dogwood anthracnose, caused by Discula destructiva (1), is another new catastrophic tree disease that has ravaged natural populations of the flowering dogwood (Cornus florida) in the Appalachians over the past 15 years, and the epidemic is prognosticated to continue (2). An estimated 9.5 million acres have been affected, primarily in the Appalachian Mountains, from VA southwards, alone, and an estimated 50% of all dogwoods in PA have been killed. Since acid deposition has been linked experimentally with disease induction, and since the disease incidence and severity are more pronounced at higher elevations where lower pH precipitation events occur, we investigated the effect of acidic foliar sprays on moiphologic changes in the foliar cuticle and trichomes (3), the initial sites of infection and foci of Discula sporulation.

A sporulation medium forDiscula destructiva, the dogwood anthracnose fungus

1993 ◽  
Vol 26 (2) ◽  
pp. 117-121 ◽  
Author(s):  
Susan D. McElreath ◽  
Frank H. Tainter
Keyword(s):  
Sporulation Medium ◽  
Dogwood Anthracnose ◽  
Dogwood Anthracnose Fungus

scholarly journals Real-Time PCR Detection of Dogwood Anthracnose Fungus in Historical Herbarium Specimens from Asia

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0154030 ◽  
Author(s):  
Stephen Miller ◽  
Hayato Masuya ◽  
Jian Zhang ◽  
Emily Walsh ◽  
Ning Zhang
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Pcr Detection ◽  
Herbarium Specimens ◽  
Dogwood Anthracnose ◽  
Dogwood Anthracnose Fungus

scholarly journals Comparison of Chitinases from Dogwood Anthracnose Resistant and Susceptible Cornus Species

HortScience ◽  
1998 ◽  
Vol 33 (2) ◽  
pp. 298-301 ◽  
Author(s):  
Nicole A. Cardwell ◽  
Gary L. McDaniel
Keyword(s):  
Chitinase Activity ◽  
Resistance Mechanisms ◽  
Resistant Species ◽  
Cornus Mas ◽  
Pathogenesis Related Protein ◽  
Discula Destructiva ◽  
Pathogenesis Related ◽  
Isoelectric Points ◽  
Molecular Masses ◽  
Dogwood Anthracnose

The pathogenesis-related protein, chitinase, is implicated in the resistance mechanisms involved in dogwood anthracnose, which is caused by Discula destructiva. Chitinase isozymes were isolated from Discula-inoculated Cornus mas, a highly resistant species, and from inoculated C. florida, a highly susceptible species. Chitinase activity was identified in C. mas on days 2-12 following inoculation, but was expressed only on day 8 following inoculation in C. florida. Both dogwood species expressed a constitutive chitinase level in noninoculated control leaves, but Discula-inoculated leaves of C. mas contained three chitinase isozymes, whereas C. florida leaves expressed only two. Molecular masses of isozymes were 21, 32, and 35 kDa for C. mas and 21 and 35 kDa for C. florida. Isoelectric focusing demonstrated three chitinase isozyme isoelectric points for C. mas (pI = 5.6, 6.8, and 8.9), but only two for C. florida (pI = 5.6 and 6.8). These differences in synthesized isozymes and rate of accumulation suggest that chitinase may have a role in the defense of dogwood against D. destructiva infection.

Impacts of Dogwood Anthracnose (Discula destructiva Redlin) on the Fruits of Flowering Dogwood (Cornus florida L.): Implications for Wildlife

2001 ◽  
Vol 146 (2) ◽  
pp. 379-387 ◽  
Author(s):  
IRENE M. ROSSELL ◽  
C. REED ROSSELL JR. ◽  
KEVIN J. HINING ◽  
ROBERT L. ANDERSON
Keyword(s):  
Cornus Florida ◽  
Flowering Dogwood ◽  
Discula Destructiva ◽  
Dogwood Anthracnose

DNA Amplification Fingerprinting Provides Evidence That Discula destructiva, the Cause of Dogwood Anthracnose in North America, Is an Introduced Pathogen

Mycologia ◽  
1995 ◽  
Vol 87 (4) ◽  
pp. 490 ◽  
Author(s):  
Robert N. Trigiano ◽  
Gustavo Caetano-Anolles ◽  
Brant J. Bassam ◽  
Mark T. Windham
Keyword(s):  
North America ◽  
Dna Amplification ◽  
Discula Destructiva ◽  
Dogwood Anthracnose

scholarly journals Evaluation of Eight Species of Cornus for Resistance to Dogwood Anthracnose

1994 ◽  
Vol 12 (2) ◽  
pp. 61-64
Author(s):  
James L. Sherald ◽  
Tammy M. Stidham ◽  
Libby E. Roberts
Keyword(s):  
Environmental Conditions ◽  
Natural Infection ◽  
Severe Disease ◽  
Resistance Testing ◽  
Cornelian Cherry ◽  
Flowering Dogwood ◽  
Discula Destructiva ◽  
Dogwood Anthracnose ◽  
Test Plants

Abstract Eight species and one cultivar of Cornus: C. florida L. (flowering dogwood), C. kousa (Buerger ex Miquel) Hance (Chinese dogwood), C. alba L. (Siberian dogwood), C. alternifolia L. (pagoda dogwood), C. sericea L. (red-osier dogwood), C. sericea ‘Flaviramea’ (yellow twig dogwood), C. racemosa Lam. (gray stem dogwood), C. amomum Mill, (silky dogwood), and C. mas L. (Cornelian cherry) were subjected to natural infection by Discula destructiva for two or three years. The area of exposure exhibited a 35% increase in mortality of native C. florida over a four year period. Only the eight C. florida test plants developed dogwood anthracnose symptoms and six of these plants died after three years. All other species remained free of dogwood anthracnose. Under more severe disease conditions other Cornus species may develop dogwood anthracnose. Ideally, resistance testing should be performed under laboratory or greenhouse conditions where inoculum and environmental conditions can be controlled.

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