Figure 3

Ultrastructural characteristics of the CpSlt2-null mutant strain (TdSLT2-69). (A) Scanning electron micrographs and transmission electron micrographs of mycelia. Typical extended filamentous hyphae are observed in the wild-type EP155/2, UEP1, TdSLT2-69, and TdSLT2-69-S1 strains. More dense and thinner individual hyphae with coalesced mycelia are observed in the sectored TdSLT2-69 progeny, TdSLT2-69-S1. Transmission electron micrographs of intrahyphal hyphae of TdSLT2-69 are indicated with an arrow. (B) Hyphae with less electron-dense material are noted in the outer cells of intrahyphal hyphae and arrowheads in the enlarged inlet indicate moderately hypertrophied invaginated walls.