First report of Rhizoctonia solani AG-4 HG-I causing leaf blight disease on Cattleya × hybrid in Taiwan

Leaves of a Cattleya  × hybrid registered in Taichung, Taiwan developed dark-brown necrotic lesions with a yellow halo. Two isolates (CaRh1 and CaRh2) were collected and identified as Rhizoctonia solani AG-4 HG-I based on morphology and molecular characteristics. Leaves of this Cattleya and other or...

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Bibliographic Details
Published in:Journal of general plant pathology : JGPP 2023, Vol.89 (2), p.132-135
Main Authors: Hsieh, Ya-Chu, Chang, Che-Wei, Wang, Chao-Jen
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Blight
Cattleya
Disease Note
Leaf blight
Leaves
Lesions
Life Sciences
Microbiology
Physical characteristics
Plant Pathology
Rhizoctonia solani
Signs and symptoms
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Summary:Leaves of a Cattleya  × hybrid registered in Taichung, Taiwan developed dark-brown necrotic lesions with a yellow halo. Two isolates (CaRh1 and CaRh2) were collected and identified as Rhizoctonia solani AG-4 HG-I based on morphology and molecular characteristics. Leaves of this Cattleya and other orchids ( Dendrobium sp., Oncidium sp. and Phalaenopsis sp.) that were wound-inoculated with the two isolates developed dark-brown, slightly sunken necrotic lesions. This is the first report of R. solani AG-4 HG-I causing symptoms on leaves of Cattleya  × hybrid in Taiwan.
ISSN:1345-2630
1610-739X
DOI:10.1007/s10327-022-01108-y