First Report of Leaf Spot Disease Caused by Polyrostrata indica on Aloe vera from Madhya Pradesh, India
Keywords:Aloe vera, Leaf spot, Polyrostrata indica, Disease, India
A leaf spot disease was observed on Aloe vera plants growing in nurseries and botanical gardens of Gwalior, Madhya Pradesh, India. Symptoms were noticed on the tips and the middle part of the leaves in the form of small, circular, dark brown necrotic spots, with an average diameter of 0.6-1.4×0.5-0.9 cm. Dark brown colonies with granular appearance was consistently isolated from the infected tissue on PDA. Conidia were hyaline, aseptate and rod shaped measuring up to 12.5-20×7.5-15 μm. Based on the morphological and cultural characteristics, fungus was identified as Polyrostrata indica Prameela and Nita Mathur. Pathogenicity test conducted on healthy Aloe leaves showed typical leaf spot symptoms after fourteen day of infestation. To the best of our knowledge, this is the first record of this pathogen on A. vera in India.
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