Dothiorella gummosis caused by Dothiorella viticola, first record from citrus in Tunisia.
During recent surveys, sour orange (Citrus aurantium) rootstocks grafted with clementine (Citrus clementina) cv. Hernandina were observed with trunk cankers, gummy exudation, branch dieback, and brown staining beneath the bark in citrus orchards in the North of Tunisia. The diseased trees produce poor quality fruit and become dessicated and die after 2 to 3 years. The causal pathogen was isolated and identified as Dothiorella viticola based on morphological, molecular and pathogenicity analyses. The obtained sequences were deposited in GenBank as accession numbers MH236148 and MH249053. This is thought to be the first report of gummosis caused by D. viticola on citrus in Tunisia.