Entry ofPisolithus tinctoriushyphae intoPinus taedaroots

摘要

Ectomycorrhizal and nonectomycorrhizal short roots ofPinus taedawere examined by scanning electron microscopy. Hyphae ofPisolithus tinctoriusenter primary tissues of lateral and short roots through natural openings several times larger than hyphal diameter. Similar openings appear in roots not exposed toP.tinctorius. Hyphae also enter the root surface through other openings the same diameter as the hyphae. These openings are probably formed by the enzymatic activity of the hyphal tips.