Date of Award:
5-1-1987
Document Type:
Dissertation
Degree Name:
Doctor of Philosophy (PhD)
Department:
Biology
Department name when degree awarded
Biology
Committee Chair(s)
Anne J. Anderson
Committee
Anne J. Anderson
Committee
Joseph K.-K. Li
Committee
Neal Van Alfen
Committee
Jeffery K. Kondo
Committee
Jim Bowman
Abstract
Certain extracellular components from the α race of Colletotrichum Iindemuthlanum exhibit differential elicitor activity in bean cultivars. Purification of a race extracellular components by a variety of chromatographic techniques has revealed elicitor activity in components with different chemical compositions. One class of elicitors, which does not adsorb to DEAE-Sephadex or CM-Sephadex is a carbohydrate-rich complex containing galactose (17%), glucose (38%), and mannose (45%). This purified elicitor induced high accumulations of phenolics, phytoalexins (kievitone, phaseollinisoflavan and phaseollin) and mRNA's corresponding to the enzymes phenylalanine ammonia-lyase and chalcone synthase in incompatible bean cultivars (Dark Red Kidney and Tennessee Green Pod). Very little elicitor activity was displayed on a compatible bean cultivar (Great Northern). No extracellular components from the β race exhibited elicitor activity on β race-compatible Dark Red Kidney and Great Northern bean.
Recommended Citation
Tepper, Craig S., "The Identification and Characterization of Extracellular Components of Colletotrichum lindemuthianum Which Display Differential Elicitor Activity in Bean" (1987). Biology. 554.
https://digitalcommons.usu.edu/etd_biology/554
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