Leaf spot and fruit rot of strawberry caused by Neopestalotiopsis clavispora in Indo-Gangetic plains of India
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A severe foliar disease was observed on leaves and fruits of strawberry (Fragaria × ananassa) for the first time from Indo-Gangetic plains of West Bengal in India during 2016–2017. Typical symptom appeared as a small necrotic lesion with a grey coloured centre and purplish brown margin. The spots were scattered on the leaves and gradually the spots coalesced to each other and covered large necrotic areas causing gradual conversion from green areas into black necrotic areas. As the spots were older and matured, black coloured acervuli developed from the necrotic portion. Morphologically the pathogen was very much similar with the genus Neopestalotiopsis previously reported from other countries. Through molecular characterization the pathogen in the present study was confirmed as Neopestalotiopsis clavispora (NCBI accession number MF377347). Further isolated pathogen was tested in some leading strawberry varieties of India. Although all the cultivars showed susceptibility under laboratory as well as field conditions, the variety “Sabrina” showed moderately resistance in leaves as well as fruits among the tested varieties.
KeywordsFruit rot Indo-Gangetic plains Leaf spot Neopestalotiopsis clavispora Strawberry
Authors would like to acknowledge Directorate of Research, Bidhan Chandra Krishi Viswavidyalaya (BCKV), Krishi Vigyan Kendra (KVK)-Gayeshpur and Faculty of Agriculture, BCKV for necessary support to carry out the research programme.
- Ayobi N, Mohammad JS (2015) Strawberry fruit rot caused by Neopestalotiopsis iranensis sp. nov., and N. mesopotamica. Curr Microbiol 72(3):329–336Google Scholar
- Bose S (1970) Diseases of valley fruits in Kumaon (III). Leaf-spot diseases of strawberry. Progress Hortic 2:33–35Google Scholar
- Embaby EM (2007) Pestalotia fruit rot on strawberry plants in Egypt. Egypt J Phytopathol 35:99–110Google Scholar
- Kumar D, Pratap B, Vishwakarma G (2015) Studies of integrated nutrient management on physico-chemical characters of strawberry (Fragaria × ananassa Duch). Res Environ Life Sci 8:474–476Google Scholar
- Mahapatra S (2016) Spraying schedule of garlic bulb extract, mancozeb and salicyclic acid against Alternaria blight of mustard. Indian Phytopath 69(4):419–421Google Scholar
- Mouden N, Benkirane R, Touhami AO (2014) Pathogenic capacity of Pestalotia longisetula Guba reported for the first time on strawberry (Fragaria ananassa Duch.) in Morocco. Int J Pure Appl Biosci 2:132–141Google Scholar
- Townsend GR, Heuberger JW (1943) Methods for estimating losses caused by diseases in fungicide experiments. Plant Dis Rep 27:340–343Google Scholar
- Whitaker VM, Santos BM, Peres NA (2012) University of Florida strawberry cultivars. University of Florida IFAS Extension HS1199:1–4Google Scholar
- Zhang JX, Xu T, Ge QX (2003) Notes on Pestalotiopsis from Southern China. Mycotaxon 85:91–92Google Scholar