Open AccessRole for Salicylic Acid in the Activation of Defense Responses in Catalase-Deficient Transgenic Tobacco
Author(s) -
Hejun Du,
Daniel F. Klessig
Publication year - 1997
Publication title -
molecular plant-microbe interactions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.565
H-Index - 153
eISSN - 1943-7706
pISSN - 0894-0282
DOI - 10.1094/mpmi.1997.10.7.922
Subject(s) - salicylic acid , catalase , transgene , genetically modified crops , biology , nicotiana tabacum , enzyme , biochemistry , gene
Transgenic tobacco plants with severely reduced catalase activity were crossed with NahG plants that do not accumulate salicylic acid. Some of the progeny from the cross spontaneously developed necrosis when grown under strong light, similar to that observed on the parental severely catalase-deficient plants. However, in contrast to the parental catalase-deficient plants, these progeny plants did not constitutively express PR-1 genes or develop enhanced resistance. Thus, salicylic acid appears to be required for the induction of these defense responses in catalase-deficient tobacco plants.