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Ectophoma iranica sp. nov. and new hosts and records of Allophoma spp. in Iran
Author(s) -
Larki Reihaneh,
MehrabiKoushki Mehdi,
Farokhinejad Reza
Publication year - 2019
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/jph.12840
Subject(s) - biology , botany , internal transcribed spacer , ornamental plant , phoma , geranium , taxonomy (biology) , intergenic region , phylogenetic tree , gene , genetics , cultivar , genome
A survey was conducted to identify fungi associated with leaf diseases of ornamental herbs, including Christ plant, dracaena, rose geranium, rose periwinkle and treasure flower, in Ahvaz, southwestern Iran. Twenty‐five symptomatic herbs were collected and studied, which led to the isolation of seven Phoma‐like strains belonging to four taxa. These fungi were characterised based on DNA sequence data for the partial large subunit 28S nrDNA (LSU‐D1/D2), the internal transcribed spacer 1 and 2 and 5.8S nrDNA (ITS) and part of the β‐tubulin (tub2) gene regions. A multi‐locus‐based phylogeny, in combination with morphology, allowed for the identification of Allophoma hayatii , A. labilis , A. tropica and a novel species of the genus Ectophoma . Ectophoma iranica sp. nov. is morphologically and genetically distinctive from previously described species. In pathogenicity tests, the two strains of E. iranica (CBS 144681 and IRAN 3354C) caused leaf spot symptoms on leaves of Catharanthus roseus . New host plant species and records for A. hayatii , A. labilis and A. tropica are reported, plus further emended characterization of A. hayatii .