Claim · model-written summary
The authors interpret the finding as supporting management strategy development and understanding implications for Rhododendron health.
- Taxon
- R. latoucheae
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Rhododendron latoucheaee0 - Outcome
- development of effective management strategiese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“This finding will facilitate the development of effective management strategies to control the complex leaf spot disease affecting R. latoucheae and provide critical insights into its broader implications for the health of this species.”
Title
First Report of Diaporthe hongkongensis Causing Leaf Spot on Rhododendron latoucheae in China
Jianjun Lin; Lingling Liu; Zhanmei Li; et al. Plant Disease 2025. doi:10.1094/pdis-11-24-2361-pdn
Other claims from this paper (13)
- Observation Leaf spot occurred on Rhododendron latoucheae in the Baili Azalea Forest Area during May–July 2023.
- Observation Leaf spot incidence was about 12% in a 1 hm2 field and substantially reduced ornamental and economic value.
- Observation Affected leaves had irregular grey-white lesions with dark brown borders and black conidiomata.
- Observation Three single-spore isolates had identical morphological characteristics.
- Observation The pathogen colonies were pale gray with white aerial mycelium on PDA in darkness.
- Observation Alpha conidia were single-celled, translucent and fusiform, measuring 6.2 to 8.1 × 2.6 to 3.0 μm.
- Observation Beta conidia were filamentous and hook-shaped, measuring 17.0 to 23.0 × 0.9 to 1.5 μm.
- Observation Morphological features matched the established description of Diaporthe hongkongensis.
- Observation ITS, TUB, TEF1 and CAL sequences were obtained and showed 97.37 to 99.30% identity to Diaporthe hongkongensis CBS 115448.
- Observation Phylogenetic analysis placed the isolate in a well-supported cluster with D. hongkongensis.
- Intervention effect Inoculated Rhododendron leaves developed field-like brown lesions after 14 days whereas controls remained symptom-free.
- Observation The fungus was reisolated from infected leaves and its identity confirmed morphologically and molecularly.
- Observation The authors report the first D. hongkongensis leaf spot occurrence on R. latoucheae in China.