| Categories genes  | Tags ja  JA  defense  tolerance  defense response  immune response  xoo  sa  SA 
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  • Key message
    • In rice, transient overexpression of OsPUB41 leads to enhanced expression of PR genes and SA as well as JA biosynthetic and response genes
    • However, in Arabidopsis, ectopic expression of OsPUB41 results in upregulation of only JA biosynthetic and response genes
    • This indicates that the E3 ligase activity of OsPUB41 protein is essential for induction of plant defense responses
    • Overexpression of OsPUB41 leads to induction of callose deposition, enhanced tolerance to Xoo and Rhizoctonia solani infection in rice and Arabidopsis respectively
    • Transient overexpression of either of the two biochemically inactive mutants (OsPUB41C40A and OsPUB41V51R) of OsPUB41 in rice and stable transgenics in Arabidopsis ectopically expressing OsPUB41C40A failed to elicit immune responses
    • The results presented here suggest that OsPUB41 is possibly involved in elicitation of CWDE triggered immune responses in rice
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