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Sapote (Manilkara zapota L., family Sapotaceae) is a tropical perennial plant native to Asia largely cultivated on the coastal and semiarid areas of northeastern Brazil, mainly for fresh fruit consumption. Sapote is a succulent and sweet fruit, esteemed as a nutritious food for its content of vitamins A, B1, B2, B5, and C, as well as carbohydrates, calcium, phosphorus, and iron. In 2014, during the April to May rainy season, necrotic leaf spots were observed on 70% of the seedlings in a nursery at Embrapa Agroindústria Tropical, in Pacajus, Ceará State. The causal agent was isolated from small pieces of the symptomatic disinfested leaf (70% ethanol, 0.5% sodium hypochlorite, and washed with sterilized distilled water) and plated on potato carrot agar (PCA). After 5 days of incubation at 25°C, the isolated colony (CMM-4726) was grayish-white in color, and conidia were straight, hyaline, aseptate, and subcylindrical with rounded ends, measuring 12.24 to 20.34 μm long and 2.70 to 5.48 μm wide (n = 110). The colony from this isolate was similar in color and shape and was within the range of conidia sizes for Colletotrichum theobromicola described by Santos et al. (2017). A monosporic culture grown in PCA medium was used for DNA extraction according to the method of Zhang et al. (2010). To confirm identification, six genes were amplified and sequenced: internal transcribed spacer region (ITS), actin (ACT), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), calmodulin (CAL), chitin synthase (CHS-1), and β-tubulin (TUB2) (Weir et al. 2012). The ITS, ACT, and TUB2 sequences had 100% sequence similarity with C. theobromicola (KX721068.1, Quick Links Add to favorites

First Report of Colletotrichum theobromicola Causing Leaf Spot in Sapote (Manilkara zapota) Seedlings in Brazil