Artificial inoculation and susceptibility of Pinus armandii to Dothistroma septosporum |
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Authors: | Zuzana Jánošíková Emília Ondrušková Katarína Adamčíková |
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Affiliation: | Department of Plant Pathology and Mycology, Institute of Forest Ecology, Slovak Academy of Sciences, Nitra, Slovakia |
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Abstract: | Dothistroma needle blight (DNB) is a serious needle disease of conifers that primarily affects pine species (Pinus spp.). Dothistroma septosporum is one of the DNB pathogens that has a diverse range of host species excluding Pinus armandii. In 15 inoculated P. armandii seedlings, D. septosporum acervuli were observed in 43 infected needles of ten seedlings with a mean disease severity of 1.11% at 25 weeks after inoculations, demonstrating the potential of D. septosporum to cause symptoms on the needles of P. armandii via artificial inoculation. The disease severity of P. armandii was similar to the positive control, Pinus nigra (median 0.75 for P. armandii to 0.70 for P. nigra), thus, P. armandii acts under artificial conditions as a susceptible host species. |
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Keywords: | artificial inoculation Chinese white pine disease severity Dothistroma needle blight |
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