In:
MycoKeys, Pensoft Publishers, Vol. 63 ( 2020-02-13), p. 49-67
Abstract:
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 tef 1 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.
Type of Medium:
Online Resource
ISSN:
1314-4049
,
1314-4057
DOI:
10.3897/mycokeys.63.49264
DOI:
10.3897/mycokeys.63.49264.figure1
DOI:
10.3897/mycokeys.63.49264.figure2
DOI:
10.3897/mycokeys.63.49264.figure3
DOI:
10.3897/mycokeys.63.49264.figure4
DOI:
10.3897/mycokeys.63.49264.suppl1
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2020
detail.hit.zdb_id:
2630648-7
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