Abstract

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.

Degree

MS

College and Department

Plant and Wildlife Sciences

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

1973-08-01

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/Letd394

Keywords

Bunt (Disease of wheat); Fungi in agriculture; Microscopy

Language

English

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