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When grown in monoculture, Antilles cherry (Malpighia glabra) plants have been affected by diseases which cause fruits malformation and spotting, reducing their value for market. From 1999 on, three new diseases characterised by leaf spot and fall of leaves have been observed in plantations located in Santa Izabel do Pará and Igarapé Açu counties. After isolation and pathogenicity tests on leaves of Antilles cherry plants, the isolates were identified as Calonectria ilicicola (anamorph: Cylindrocladium parasiticum) which causes large leaf spots reaching up to 7 cm long, brownish in colour, coalescent, scorching large leaf areas and causing 50% of leaf fall; Corynespora cassiicola, which provokes irregularly shaped, necrotic leaf spots with dark brown margins and white centers, surrounded by a yellow halo; and Myrothecium roridum which causes greyish target spots. Corynespora cassiicola has been reported causing leaf spots on different hosts in the Amazon region, while C. cassiicola has been recorded infecting Antilles cherry besides other hosts in the States of Maranhão and Pará. Em plantios uniformes, a aceroleira (Malpighia glabra) tem sido afetada por doenças que causam manchas e malformação nos frutos, tornando estes impróprios para consumo in natura. A partir de 1999, três novas doenças caracterizadas pelo aparecimento de manchas foliares e queda da folhagem vem sendo observadas em plantações localizadas nos municípios de Santa Izabel do Pará e Igarapé Açu. Após isolamento, exame das estruturas morfológicas e testes de patogenicidade em mudas de acerola, os isolados foram identificados como Calonectria ilicicola (anamorfo: Cylindrocladium parasiticum) que causa manchas foliares relativamente grandes atingindo até 7 cm de comprimento, de coloração marrom-escura que coalescem atingindo grande extensão da área foliar e causando a queda de até 50% das folhas; Corynespora cassiicola que provoca manchas necróticas de formato irregular, com bordas marrom-escuras e centro branco, circundadas por um halo amarelo nítido; Myrothecium roridum que causa manchas concêntricas de coloração cinza. O fungo C. cassiicola tem sido relatado causando doenças em vários hospedeiros na região amazônica, enquanto C. ilicicola infeta outros hospedeiros, nos Estados do Maranhão e Pará

Three new pathogens infecting antilles cherry in the State of Pará