Identification and pathogenicity of Diaporthe species associated with stem-end rot of mango (Mangifera indica L.)
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Diaporthe spp. isolated from stem-end rot lesions of several cultivars of mango were phylogenetically identified as Diaporthe arecae, Diaporthe eugeniae, Diaporthe pascoei, Diaporthe perseae, and Diaporthe ueckerae based on Internal Transcribed Spacer, Translation Elongation Factor-1α, and β-tubulin sequences. Pathogenicity test showed that species identified as D. pascoei and D. ueckerae isolates produced stem-end rot symptoms on tested mango cvs Chok Anan, Waterlily, and Falan. Diaporthe arecae was pathogenic both on Chok Anan and Waterlily, while D. perseae produced rotting symptoms only on Chok Anan. Diaporthe eugeniae was not pathogenic in all tested mango cultivars. Our study indicates that pathogenic Diaporthe spp. are possibly opportunistic pathogens.
KeywordsDiaporthe Stem-end rot Mango ITS TEF-1α β-Tubulin
This work was supported by the Universiti Sains Malaysia. The authors thank the lab staff and postgraduate students of Plant Pathology Lab, School of Biological Sciences, USM involved in the field work. We thank Dr. Nik Mohd Izham for his assistance in analysing the pathogenicity test data.
This work was funded by the Universiti Sains Malaysia Bridging grant (304/PBIOLOGI/6316028).
Compliance with ethical standards
Human and animal rights statement
This article does not contain any studies with human or animal participants performed by any of the authors.
Conflict of interest
The authors declare that they have no conflict of interest.
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