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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Disease and Pest Management Research Unit » Research » Publications at this Location » Publication #403680
Research Project: Disease Management in Small Fruit and Nursery Crops Based on Knowledge of Pathogen Diversity, Biology, and Environmental Effects

Location: Horticultural Crops Disease and Pest Management Research Unit

Title: The effect of host volatiles on the sporulation and germination of Calonectria pseudonaviculata, the causal agent of boxwood blight

Author
item OHKURA, MANA - Oregon State University
item Scagel, Carolyn
item Weiland, Gerald

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/30/2023
Publication Date: 11/1/2023
Citation: Ohkura, M., Scagel, C.F., Weiland, G.E. 2023. The effect of host volatiles on the sporulation and germination of Calonectria pseudonaviculata, the causal agent of boxwood blight . Meeting Abstract. 113: S3.133. https://apsjournals.apsnet.org/doi/epdf/10.1094/PHYTO-12-23-0507-R.
DOI: https://doi.org/10.1094/PHYTO-12-23-0507-R

Interpretive Summary:

Technical Abstract: Boxwood blight is primarily a foliar disease that causes substantial losses in boxwood, the top-selling broadleaf evergreen nursery plant produced in the USA. The fungal pathogen, Calonectria pseudonaviculata, produces conidia that are splash dispersed, which germinate and infect through stomata on the leaves or stems. Spore germination is a key process for infection to occur, and previously, we demonstrated that C. pseudonaviculata spore germination is stimulated by volatiles from detached boxwood leaves. To evaluate the effect of boxwood volatiles on pathogen sporulation and growth of other resident fungi, we are performing two experiments. First, we are comparing sporulation of C. pseudonaviculata on artificial media in the presence and absence of detached boxwood leaves. Second, we are exposing fungi isolated from boxwood plants to volatiles from detached boxwood leaves. Results from these experiments will be presented at the meeting.