Caryopses of wheat were studied during infection by Tilletia caries and T. controversa. Initially the pathogens penetrated embryos of the host. After the embryo tissue was consumed by the fungi, endosperm tissue was penetrated and consumed. Initial penetration of endosperm tissue was in localized areas. During infection the fungus mycelium spread intercellularly, but occasionally was seen intracellularly. As the host tissue was consumed teliospores were formed. At maturity a host cell layer 4-6 cells thick remained which retained the mature teliospores. Histochemical studies indicated that carbohydrates and lipids of the host disappeared soon after invasion by the pathogens. Nuclei and cell walls remained intact after other cell components decomposed.
College and Department
Plant and Wildlife Sciences
BYU ScholarsArchive Citation
Grove, Melvin Douglas, "Light and electron microscopy investigation of developing wheat caryopses infected by Tilletia" (1973). Theses and Dissertations. 8059.
Bunt (Disease of wheat); Fungi in agriculture; Microscopy