First Report of Bulb Rot on Lily Caused by <i>Curvularia pseudobrachyspora</i> in China

Zeng, Huilan; Li, Rungen; Lu, Qianyi; Yan, Decong

doi:10.1094/pdis-05-19-0943-pdn

“…C. pseudobrachyspora commonly occurs as a plant pathogen causing leaf spots in Cocos nucifera [51], Areca catechu [52], Cannabis sativa [53], Musa acuminata [54], and bulb rot in Lilium var. viridulum [55]. S. commune was the only basidiomycete isolated in this study.…”

Section: Resultsmentioning

confidence: 76%

Isolation and Identification of Fungal Endophytes Associated with Leaves of Rhizophora mucronata Lamk.

Bitacura,

Jacob,

dela Cruz

2024

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Mangrove-associated fungal endophytes (MFE) produce structurally diverse secondary metabolites with promising pharmaceutical applications. In our effort to search for these valuable fungi, reported herein is our isolation and molecular identification of fungal endophytes associated with mature leaves of the host mangrove Rhizophora mucronata. The isolated MFE were characterized based on their colonial growth on three culture media -potato dextrose agar (PDA), Czapek Dox agar (CDA), and malt extract agar (MEA), and these were grouped into 16 morphospecies. Analysis of the ITS genes confirmed the identities of the isolated mangrove fungal endophytes as belonging to the genera Aspergillus, Cladosporium, Curvularia, Diaporthe, Fusarium, Nigrospora, Penicillium, Pestalotiopsis, and Schizophyllum. Our study showed the species richness of fungal endophytes associated with Philippine mangroves.

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“…C. pseudobrachyspora commonly occurs as a plant pathogen causing leaf spots in Cocos nucifera [51], Areca catechu [52], Cannabis sativa [53], Musa acuminata [54], and bulb rot in Lilium var. viridulum [55]. S. commune was the only basidiomycete isolated in this study.…”

Section: Resultsmentioning

confidence: 76%

Untitled

2024

actamanil

0

View full text Add to dashboard Cite

Mangrove-associated fungal endophytes (MFE) produce structurally diverse secondary metabolites with promising pharmaceutical applications. In our effort to search for these valuable fungi, reported herein is our isolation and molecular identification of fungal endophytes associated with mature leaves of the host mangrove Rhizophora mucronata. The isolated MFE were characterized based on their colonial growth on three culture media -potato dextrose agar (PDA), Czapek Dox agar (CDA), and malt extract agar (MEA), and these were grouped into 16 morphospecies. Analysis of the ITS genes confirmed the identities of the isolated mangrove fungal endophytes as belonging to the genera Aspergillus, Cladosporium, Curvularia, Diaporthe, Fusarium, Nigrospora, Penicillium, Pestalotiopsis, and Schizophyllum. Our study showed the species richness of fungal endophytes associated with Philippine mangroves.

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“…Curvularia pseudobrachyspora has been reported as a causal agent for Lilium brownii var. viridulum BRD in Jiangxi (Zeng et al, 2020 ; Jiao et al, 2021 ). Obviously, a majority of these pathogens were isolated from the decaying bulbs of ornamental lilies, with limited research being conducted on BRD in Lanzhou lily bulbs during storage.…”

Section: Introductionmentioning

confidence: 99%

Morphological, molecular, and biological characterization of bulb rot pathogens in stored Lanzhou lily and the in vitro antifungal efficacy of three plant essential oils

Liu,

Wang,

Jin

et al. 2024

Front. Microbiol.

3

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Lanzhou lily (Lilium davidii var. willmottiae) is an exclusive sweet lily variety indigenous to China, which is susceptible to bulbous rot caused by fungal infection during storage. This experiment tests the pathogenicity of the pure culture isolated from the diseased tissue was confirmed in accordance with Koch's postulates, and the pathomycetes were identified based on their morphological and molecular characteristics. Furthermore, the biological characteristics of the pathogens were investigated, followed by an evaluation of the antifungal effects of three plant essential oils against them. The results showed that two strains of fungi were isolated from Lanzhou lily rot, which were identified as Fusarium oxysporum Schl. and Aspergillus sydowii (Bain. Et sart.). In addition, the pathogenicity of these two strains of fungi was demonstrated that only F. oxysporum induced rot with similar symptoms during the post-harvest storage period. The biological characteristics of F. oxysporum indicated the potato maltose agar and lily dextrose agar were identified as the most suitable media. Sucrose was determined to be the optimal carbon source, while ammonium nitrate was found to be the best nitrogen source for the growth of F. oxysporum. Mycelial growth and sporulation of F. oxysporum occurred at an optimum pH value of 6. Total darkness facilitated mycelial growth and conidial germination. The ideal temperature for growth was found to be 28°C, while relative humidity did not significantly impact mycelial growth; however, a relative humidity of 55% was most favorable for spore production. Among the three essential oils tested, cinnamon essential oil displayed superior antifungal efficacy against F. oxysporum, whereas angelica essential oil and tea tree essential oil also exhibited moderate inhibitory effects against this pathogen. This research provides valuable theoretical insights for disease control during the storage and transportation of Lanzhou lily.

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First Report of Bulb Rot on Lily Caused by Curvularia pseudobrachyspora in China

Cited by 6 publications

References 5 publications

Isolation and Identification of Fungal Endophytes Associated with Leaves of Rhizophora mucronata Lamk.

Isolation and Identification of Fungal Endophytes Associated with Leaves of Rhizophora mucronata Lamk.

Untitled

Morphological, molecular, and biological characterization of bulb rot pathogens in stored Lanzhou lily and the in vitro antifungal efficacy of three plant essential oils

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