Abstract
Garden nasturtium (Tropaeolum majus), belonging to the family Tropaeolaceae, is a widely used ornamental plant. In April 2020, a powdery mildew was observed on garden nasturtium in central Taiwan. Symptoms included angular chlorotic lesions which later became brown and necrotic on both leaf surfaces. The fungus was identified as Leveillula taurica s. str. based on the morphology and the molecular analysis of ITS sequence. The powdery mildew was found on both T. majus and sweet pepper in the meantime. This is the first report of L. taurica causing powdery mildew on T. majus in Taiwan.
Access this article
We’re sorry, something doesn't seem to be working properly.
Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.
References
Adhikari MK, Meeboon J, Takamatsu S, Braun U (2018) Leveillula buddlejae sp. nov., a new species with an asexual morph resembling phylogenetically basal Phyllactinia species. Mycoscience 59:71–74
Braun U, Cook RTA (2012) Taxonomic manual of the Erysiphales (powdery mildews). CBS Biodiversity Series, CBS, Utrecht
Farr DF, Rossman AY (2020) Fungal databases. US National Fungus Collections, ARS, USDA. https://www.nt.ars-grin.gov/fungaldatabases/. Accessed 11 May 2020
Fayette J, Hendricks KE, Ozores-Hampton M, Di Gioia F, Roberts PD (2016) First report of powdery mildew caused by Oidiopsis haplophylli on garden nasturtium (Tropaeolum majus L.) in Florida. Plant Dis 100:646
García-Gaytán V, García-Morales S, Silva-Rojas HV, Trejo-Téllez LI, Gómez-Merino FC (2016) First report of powdery mildew in chilhuacle chili (Capsicum annuum) caused by Leveillula taurica in southern Mexico. Plant Dis 100:2325–2325
Ghedira K, Goetz P (2013) Tropaeolum majus L. (Tropaeolaceae). Phytothérapie 11:316–319
Khodaparast SA, Takamatsu S, Hedjaroude GA (2001) Phylogenetic structure of the genus Leveillula (Erysiphales: Erysiphaceae) inferred from the nucleotide sequences of the rDNA ITS region with special reference to the L. taurica species complex. Mycol Res 105:909–918
Khodaparast SA, Takamatsu S, Harada M, Abbasi M, Samadi S (2012) Additional rDNA ITS sequences and its phylogenetic consequences for the genus Leveillula with emphasis on conidium morphology. Mycol Prog 11:741–752
Khodaparast SA, Takamatsu S, Shadlou A, Damadi M, Pirnia M, Jahani M (2016) Notes on the genus Leveillula (Erysiphaceae): a new unrecorded species and notes on Leveillula infecting Ficus, Cucurbita and Tropaeolum in Iran. Phytotaxa 260:267–275
Kusaba M, Tsuge T (1995) Phylogeny of Alternaria fungi known to produce host-specific toxins on the basis of variation in internal transcribed spacers of ribosomal DNA. Curr Genet 28:491–498
Lebeda A, Kitner M, Mieslerová B, Křístková E, Pavlíček T (2019) Leveillula lactucae-serriolae on Lactuca serriola in Jordan. Phytopathol Mediterr 58:359–367
Mori Y, Sato Y, Takamatsu S (2000) Evolutionary analysis of the powdery mildew fungi using nucleotide sequences of the nuclear ribosomal DNA. Mycologia 92:74–93
Park MJ, Kim JY, Han JG, Shin HD (2010) First Korean report of powdery mildew on Tropaeolum majus. Plant Pathol J 26:204
Reis A, Boiteux LS, Paz-Lima ML (2007) Powdery mildew of ornamental species caused by Oidiopsis haplophylli in Brazil. Summa Phytopathol 33:405–408
Ribeiro MF, Rocha FB, Barreto RW (2007) First record of powdery mildew caused by Oidiopsis haplophylli on Tropaeolum majus in Brazil. Plant Pathol 56:355
Sun YL, Choi IL, Lee YB, Choi KY, Hong SK, Kang HM (2014) Molecular diversity and phylogentic analysis of Capsicum annuum varieties using the nrDNA ITS region. Sci Hortic 165:336–343
Taiwan Agriculture Research Institute (2019) List of plant diseases in Taiwan, 5th edn. Taiwan Phytopathological Society, Taichung
Takamatsu S, Hirata T, Sato Y (1998) Phylogenetic analysis and predicted secondary structures of the rDNA internal transcribed spacers of the powdery mildew fungi (Erysiphaceae). Mycoscience 39:441–453
Takamatsu S, Inagaki M, Niinomi S, Khodaparast SA, Shin HD, Grigaliunaite B, Havrylenko M (2008) Comprehensive molecular phylogenetic analysis and evolution of the genus Phyllactinia (Ascomycota: Erysiphales) and its allied genera. Mycol Res 112:299–315
Virtudazo EV, Nakamura H, Kakishima M (2001) Phylogenetic analysis of sugarcane rusts based on sequences of ITS, 5.8 S rDNA and D1/D2 Regions of LSU rDNA. J Gen Plant Pathol 67:28–36
White TJ, Bruns T, Lee S, Taylor J (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. PCR Protocols 38:315–322
Acknowledgements
The authors thank the editor and anonymous reviewers for their helpful comments.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Human and animal rights
This article does not contain any studies with human participants or animals performed by any of the authors.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
The nucleotide sequence data reported are available in the DDBJ/EMBL/GenBank databases under the accession numbers MT472006 and MT472005.
Rights and permissions
About this article
Cite this article
Xiao, YT., Ariyawansa, H.A., Wang, CJ. et al. First report of Leveillula taurica causing powdery mildew on Tropaeolum majus in Taiwan. J Gen Plant Pathol 87, 264–268 (2021). https://doi.org/10.1007/s10327-021-01001-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10327-021-01001-0