Alternative Hosts of Grapevine Trunk Disease Pathogens

Project Number
US PP 05 2005

Project title
Alternative Hosts of Grapevine Trunk Disease Pathogens

Project leader
Mostert, L

Institution
University of Stellenbosch. Department of Plant Pathology

Project description
Grapevine trunk diseases seriously impede the sustainability and competitiveness of the South African wine and table grape industry. Premature decline and dieback as a result of these diseases cost the industry millions of rands in terms of loss in yield and quality, as well as the astronomical cost of re-establishment of vineyards. Effective disease management is based on disease prevention through wound protection and sanitation, i.e. the removal of infected plant parts and debris in order to reduce inoculum pressure. However, the pathogens that cause grapevine trunk diseases were shown not to be host specific, and several of these fungi were also described from other hosts such as stone or pome fruit (Family Rosaceae). Grapevines are frequently cultivated in close proximity to stone and pome fruit trees in South Africa. Furthermore, grapevines are often established on soils previously cultivated to stone or pome fruit trees. At present, it is unknown to what extent these trees act as alternative hosts and whether they act as inoculum sources of grapevine trunk disease pathogens. This information is vital for our understanding of the disease cycles and management strategies for the different grapevine trunk diseases.

The aim of this study is to determine whether stone and pome fruit orchards act as alternative hosts and consequently as potential inoculum sources of grapevine trunk disease pathogens.

Poster(s)
Damm, U, Crous, P W and Fourie, P H. 2005. Stone fruit trees as alternative host of grapevine trunk disease pathogens. Poster presented at the 4th International Workshop on Grapevine Trunk Diseases. 20-21 January, Stellenbosch, South Africa.

Damm, U, Crous, P W and Fourie, P H. 2005. Stone fruit trees as alternative host of grapevine trunk disease pathogens. Poster presented at the Joint Congress of the Southern African Society for Plant Pathology, African Mycology Association and Medical Mycology in Africa. 23-26 January, Hartenbos, South Africa.

Cloete, M, Crous, P W, Fourie, P H and Mostert, L. 2010. A new coelomycetous genus associated with die-back symptoms on apple trees in South Africa. Poster presented at the 9th International Mycological Congress. 1-6 August, Edinburg, United Kingdom.

Presentation(s)
Damm, U, Mostert, L Crous, P W and Fourie, P H. 2006. Fungal on stone fruit trees – a threat for South African vineyards? Paper presented at the 44th Congress of the Southern African Society of Plant Pathology. 22-25 January, Hartbeespoort Dam, South Africa.

Mostert, L, Damm, U, Halleen, F, Fourie, P H and Crous, P W. 2006. The pathogenic and epidemiological relevance of Phaeoacremonium species from grapevines and stone fruit. Paper presented a the 29th National Congress of the South African Society for Enology and Viticulture. 14-17 November. Somerset West, South Africa.

Damm, U, Mostert, L, Crous, P W and Fourie, P H. 2008. Novel Phaeoacremonium species associated with necrotic wood of Prunus trees. Paper presented at the 9th International Congress of Plant Pathology. 24-29 August, Torino, Italy.

Damm, U, Fourie, P H and Crous, P W. 2008. Botryosphaeriaceae as potential pathogens of Prunus species in South Africa. Paper presented at the 9th International Congress of Plant Pathology. 24-29 August, Torino, Italy.

Cloete, M, Damm, U, Fourie, P H and Mostert, L. 2008. Pome fruit trees as alternative hosts to grapevine trunk pathogens. Paper presented at the 6th International Workshop on Grapevine Trunk Diseases. 1-3 September, Florence, Italy.

Cloete, M, Damm, U, Crous, P W, Fourie, P H and Mostert, L. 2009. The grapevine trunk diseases occurring on pome fruit in the Western Cape. Paper presented at the 46th Congress of the Southern African Society of Plant Pathology. 25-28 January 2009, Gordon’s Bay, South Africa.

Article
Damm, U, Fourie, P H, Crous, P W. 2007. Aplosporella prunicola, a novel species of anamorphic Botryosphaeriaceae, Fungal Diversity, v. 27 (p. 35-43)

Damm, U, Crous, P W, Fourie, P H. 2007. Botryosphaeriaceae as potential pathogens of Prunus species in South Africa, with descriptions of Diplodia africana and Lasiodiplodia plurivora spp. Mycologia, Mnth Nov. v. 99 (5) (p. 664-680)

Damm, U, Verkley, G J M, Crous, P W, Fourie, P H, Haegi, A, Riccini, L. 2008. Novel Paraconiothyrium species on stone fruit trees and other woody hosts, including P. lignicolum and P.african spp. nov. Persoonia, Mnth Jun v. 20 (p. 9-17)

Damm, U, Verkley, G J M, Crous, P W, Fourie, P H, Haegi, A, Riccini, L. 2008. A fissitunicate ascus mechanism in the Calosphaeriaceae, and novel species of Jattaea and Calosphaeria on Prunus wood, Persoonia, Mnth Jun v. 20 (p. 39-52)

Damm, U, Mostert, L, Crous, P W, Fourie, P H. 2008. Novel Phaeoacremonium species associated with necrotic wood on Prunus trees, Persoonia, Mnth Jun v. 20 (p. 87-102)

Cloete, M, Fourie, P H, Mostert, L. 2009. Fungi associated with trunk disease of pome fruit trees in the Western Cape, South African Fruit Journal, v. 8 (5) (p. 98-101)

Damm, U, Fourie, P H, Crous, P W. 2010. Coniochaeta (Lecythophora), Collophora gen. nov. and Phaeomoniella species associated with wood necroses of Prunus trees, Persoonia, Mnth Jun v. 24 (p. 60-80)

FinalReport.pdf

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