Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 52, Issue 362, Pages 1947-1948Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jexbot/52.362.1947
Keywords
elicitins; 20S proteasome subunits; plant defence reactions
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Twelve alpha and beta 20S proteasome subunits cDNAs; showing 70-82% identity with the corresponding genes in Arabidopsis or rice, and features of eukaryotic proteasome subunits were cloned in tobacco. Only beta1-tcl 7, alpha3 and alpha6, 20S proteasome subunits encoding genes were up-regulated by cryptogein, a proteinaceous elicitor of plant defence reactions. These results led to the hypothesis that the activation of beta1-tcl 7, alpha3 and alpha6 could induce a specific proteolysis involved in the hypersensitive response and systemic acquired resistance monitored by cryptogein.
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