Abstract
Sixteen fungal taxa were isolated from 2400 leaf fragments of mature Musa acuminata plants collected from three different localities in Sao Paulo State, Brazil. The most frequently found endophytic fungi were Xylaria sp., Colletotrichum musae and Cordana musae. The standard distribution of endophytes was similar in the three localities. Spontaneous resistant mutants to the fungicides thiabendazole (thi-1) and benomyl (ben-5), were obtained from Colletotrichum musae wild-type isolates. Equal amounts of conidia mixtures of combinations of wild-types and mutants were reintroduced in axenic banana plantlets derived from tissue culture; thi-1 showed a selective advantage when compared to both wild-types used. For ben-5, no significant difference was found. Results showed that wild-types and spontaneous mutants of endophytic fungi as Colletotrichum musae, can be successfully reintroduced in plantlets derived from tissue culture.
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