Germination and Sporulation ofColletotrichum acutatumon Symptomless Strawberry Leaves

• DOI: 10.1094/phyto.2001.91.7.659
• Publication Date: 2007-05-11T11:13:38Z
• Authors: L. F. S. Leandro; M. L. Gleason; F. W. Nutter; S. N. Wegulo; P. M. Dixon
• Keywords: Appressorium; Colletotrichum acutatum; Conidiation

The germination and sporulation of Colletotrichum acutatum were characterized over time on strawberry leaves (cv. Tristar) plastic coverslips incubated at 26°C under continuous wetness. Conidia germinated within 3 h after inoculation formed melanized appressoria with pores by 9 inoculation. Host penetration was not observed up to 7 days Production secondary conidia conidial hyphal phialides began 6 Secondary conidiation responsible for a threefold increase in the total number Primary hyphae collapse 48 inoculation, whereas remained intact. These findings suggest that C. produced symptomless foliage may be significant sources inoculum fruit infections.