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Dalphy Ondine Camira Harteveld

Research Scientist

NIBIO Publications
NIBIO Projects

Division of Biotechnology and Plant Health

Fungal Plant Pathology in Forestry, Agriculture and Horticulture

(+47) 980 94 257
dalphy.harteveld@nibio.no

Place
Ås H7

Visiting address
Høgskoleveien 7, 1433 Ås

Authors

Dalphy Ondine Camira Harteveld

Abstract

No abstract has been registered

Authors

Dalphy Ondine Camira Harteveld Jorunn Børve Anne-Grete Roer Hjelkrem Arne Stensvand

Abstract

No abstract has been registered

To document

Authors

Dalphy Ondine Camira Harteveld Paul Goedhart Ilse Houwers Jürgen Köhl Peter Frans de Jong Marcel Wenneker

Abstract

European canker is one of the most devastating fungal diseases of apple in most temperate regions. The causal agent, Neonectria ditissima, infects trees through wounds in the bark forming cankers that girdle the stem and eventually cause tree death. Timely protection of the trees is challenged by stagnation of symptom expression after infections for a long period of time. The objective of this research is to use a novel TaqMan PCR assay to detect and quantify N. ditissima during the asymptomatic colonization of apple wood. Pruning wounds on branches of the cultivars Elstar and Gala were inoculated with N. ditissima and wood discs were sampled at 2–6, 10–14, and 30–34 mm distance from the inoculation site after 3 hours, 2 weeks, 4 weeks and 8 weeks for the detection and quantification of the pathogen. The TaqMan PCR assay detected N. ditissima in 51% of the inoculated apple tree samples. This was more sensitive than the culturing method detecting N. ditissima in 11% of the samples. An accumulation of N. ditissima DNA up to 34 mm distance from the inoculation site was observed without development of visible symptoms. To our knowledge this is the first time colonization of N. ditissima was detected and quantified in the absence of symptoms of European canker. The implications of this research are discussed.

Authors

Dalphy Ondine Camira Harteveld Martin Pettersson

Abstract

No abstract has been registered

Authors

Dalphy Ondine Camira Harteveld Jorunn Børve Arne Stensvand

Abstract

No abstract has been registered

Authors

Dalphy Ondine Camira Harteveld Marcel Wenneker Engelien Kerkhof Peter Frans de Jong Bart van der Sluis

Abstract

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Authors

Mladen Cucak Dalphy Ondine Camira Harteveld Lisa Wasko DeVetter Tobin L. Peever Rafael de Andrade Moral Chakradhar Mattupalli

Abstract

No abstract has been registered

Authors

Dalphy Ondine Camira Harteveld Marcel Wenneker Khan Pham Peter Frans de Jong Engelien Kerkhof

Abstract

No abstract has been registered

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