Diseases of Cymbopogon citratus (Poaceae) in China: Curvularia nanningensis sp. nov
| Autor: | Nalin N. Wijayawardene, Wei Cheng, Qian Zhang, Zai-Fu Yang, Yong Wang, Zhuo Chen, Kevin D. Hyde |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cymbopogon phylogeny plant disease Pleosporaceae taxonomy Asia Liliopsida Poaceae 01 natural sciences Anamorphic Fungi Conidium 03 medical and health sciences Intergenic region Ascomycota Phylogenetics Cymbopogon citratus lcsh:Botany Molecular Systematics Botany Curvularia Cymbopogon Plantae Pleosporales Phylogeny Ecology Evolution Behavior and Systematics Taxonomy plant disease biology Phylogenetic tree Poales Fungi 030108 mycology & parasitology biology.organism_classification Plant disease lcsh:QK1-989 Pleosporaceae Tracheophyta Dothideomycetes Research Article 010606 plant biology & botany |
| Zdroj: | MycoKeys MycoKeys, Vol 63, Iss, Pp 49-67 (2020) MycoKeys 63: 49-67 |
| ISSN: | 1314-4049 1314-4057 |
| Popis: | Five Curvularia strains isolated from diseased leaves of lemongrass (Cymbopogon citratus) in Guangxi Province, China, were examined. NCBI-Blast searches of ITS sequences suggested a high degree of similarity (99–100%) to Curvularia akaii, C. akaiiensis, C. bothriochloae, C. heteropogonis and C. sichuanensis. To accurately identify these strains, we further analysed their morphology and phylogenetic relationships based on combinations of ITS, GAPDH, and tef1 gene sequences. Morphological observations indicated that the key character differing from similar species was conidial size, whereas phylogenetic analyses indicated that the five strains represent one species that is also distinct from C. akaii, C. akaiiensis and C. bothriochloae by conidial size and conidiophore length. Thus, the strains examined are found to represent a new species described herein as Curvularia nanningensis. The pathogenicity test on the host and detached leaves confirmed the new species to be pathogenic on Cymbopogon citratus leaves. Standardised requirements for reliable identification of Curvularia pathogens are also proposed. |
| Databáze: | OpenAIRE |
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