Transfer of label from /sup 3/H-glucose in Digitaria eriantha leaves to the rust fungus Puccinia digitariae Pole Evans

Journal Article · Thu Aug 01 00:00:00 EDT 1985 · J. Histochem. Cytochem.; (United States)

DOI:https://doi.org/10.1177/33.8.4020098· OSTI ID:5020669

Rey, M E; Garnett, H M

Digitaria eriantha pentzii was fed /sup 3/H-glucose prior to inoculation with uredospores of Puccinia digitariae Pole Evans. Twenty-one hours after inoculation, uptake of label from /sup 3/H-glucose by the primary infection structures of P. digitariae was demonstrated employing autoradiography. These results indicate that an exchange of nutrients between host and pathogen occurs very early on in the infection process, during the formation of the primary infection structures. Despite contrary reports that obligate parasites receive no nutrition before establishment of haustoria, this study supports the work of Andrews, who demonstrated uptake of /sup 3/H-glucose label from lettuce cotyledons into the primary and secondary infection vesicles, appressoria, and germ tubes of Bremia lactucae.

• Research Organization: Univ. of the Witwatersrand, Johannesburg, South Africa
• OSTI ID: 5020669
• Journal Information: J. Histochem. Cytochem.; (United States), Vol. 8
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
FUNGI
LABELLING
GLUCOSE
TISSUE DISTRIBUTION
UPTAKE
AUTORADIOGRAPHY
INFECTIVITY
LEAVES
PARASITES
PLANT DISEASES
PLANTS
SPORES
TRITIUM COMPOUNDS
ALDEHYDES
CARBOHYDRATES
DISTRIBUTION
HEXOSES
LABELLED COMPOUNDS
MONOSACCHARIDES
ORGANIC COMPOUNDS
SACCHARIDES
550501* - Metabolism- Tracer Techniques