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Issue: Vol. 630 No. 1: 12 Dec. 2023
Type: Article
Published: 2023-12-12
DOI: 10.11646/phytotaxa.630.1.3
Page range: 40-50
Abstract views: 97
PDF downloaded: 7

Eucalyptus leaf spot disease caused by Coniella eucalyptorum in Sri Lanka

Department of plant sciences,faculty of science, University of Colombo
Center for Yunnan Plateau Biological Resources Protection and Utilization; Qujing Normal University; Qujing; Yunnan Province; 655011 P.R. China. Tropical Microbiology Research Foundation; 96/N/10; Meemanagoda Road; 10230 Pannipitiya; Sri Lanka.
Department of Plant Sciences; Faculty of Science; University of Colombo; Colombo 00700; Sri Lanka.
State Timber Corporation Sri Lanka; No.82; “Sampath Paya”; Rajamalwatte Road; Sri Jayawardenepura Kotte; 10100 Sri Lanka.
National Institute of Fundamental Studies; Hanthana; Kandy; 20000; Sri Lanka.
Center for Yunnan Plateau Biological Resources Protection and Utilization; Qujing Normal University; Qujing; Yunnan Province; 655011 P.R. China.
Department of Plant Sciences; Faculty of Science; University of Colombo; Colombo 00700; Sri Lanka.
Foliar pathogen New geographical record Pilidella South Asia Timber trees Fungi

Abstract

Coniella has a wide distribution as a plant pathogen in Eucalyptus species. Here we report a leaf spot disease caused by Coniella eucalyptorum on Eucalyptus camaldulensis in Sri Lanka. The pathogen was isolated from symptomatic leaf samples of E. camaldulensis plants from Polonnaruwa District in Sri Lanka. The isolated fungus was identified as C. eucalyptorum based on morphological characteristics and multi-gene phylogenetic analysis of combined sequences of the internal transcribed spacer region (ITS), the partial translation elongation factor 1-α gene (tef1-α), and large subunit of nuclear ribosomal RNA (LSU). The pathogenicity test was performed to confirm its pathogenicity to the host, which produced symptoms similar to those observed in the field. This is the first report of C. eucalyptorum associated with Eucalyptus plantations in Sri Lanka. This finding is important to expand the knowledge of plant pathogen diversity in Eucalyptus species and other economically important crops in Sri Lanka.

 

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