First report of Alternaria mali causing core rot of apple in Pakistan.
During a survey in 2015, wet apple core rot symptoms were observed in locally grown apple cv. Spartan fruits from a marketplace in Lahore, Punjab, Pakistan. Infected mesocarp area developed dark brown colour with wet rot symptoms, whereas adjacent pulp showed a light brown colouration. Growth of fungal mycelia was evident on infected areas. This disease affected nearly 40% of the fleshy portion of fruit. The causal pathogen was identified as Alternaria mali based on morphological, genetic (ITS) and pathogenicity analyses. This is thought to be the first report of core rot of apple fruit caused by A. mali in Pakistan.