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A novel tomato gene that rapidly responds to wound‐ and pathogen‐related signals
Author(s) -
O'Donnell Philip J.,
Truesdale Mark R.,
Calvert Caroline M.,
Dorans Alison,
Roberts Michael R.,
Bowles Dianna J.
Publication year - 1998
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.1998.00110.x
Subject(s) - salicylic acid , jasmonic acid , gene , biology , pathogen , gene expression , plant disease resistance , genetics , microbiology and biotechnology
Summary The expression of a novel defence‐related gene from tomato which responds rapidly to wound‐ and pathogen‐related signals has been characterised. The gene, which encodes a protein with homology to glucosyl transferase enzymes, is expressed within 15 min of mechanical damage to tomato leaves, and responds to signals which differ from those on the systemin/jasmonic acid pathway typical of well‐characterised wound‐induced genes of tomato. Furthermore, expression of the gene is also rapidly and specifically induced during a resistance response elicited by the application of Avr9 avirulence peptide to tomato plants carrying the corresponding Cf9 resistance gene. Whilst expression can also be induced by the application of exogenous salicylic acid and related analogues to tomato plants, several lines of evidence suggest that elevated salicylic acid is not a causal signal in planta during either the wound or pathogen resistance response.