Trifluralin herbicide-induced resistance of melon to fusarium wilt involves expression of stress- and defence-related genes

Maya Lotan-Pompan, Ron Cohen, Oded Yarden, Vitaly Portnoy, Yosef Burger, Nurit Katzir*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

To identify genes involved in trifluralin herbicide-induced resistance of melon to Fusarium oxysporum f. sp. melonis, suppression subtractive hybridization (SSH) and cDNA-amplified fragment-length polymorphism (cDNA-AFLP) were used. A total of 123 clones - 60 of which have never been isolated from melon - were isolated, sequenced and annotated. A significant proportion (35%) of the total 123 clones exhibited similarity to genes that have been formerly described as stress- or defence-related. Thirty-two selected clones were subjected to a detailed expression analysis, one-third of which were found to be up-regulated in response to trifluralin treatment and/or fusarium inoculation. The putative roles of seven of these clones in stress are discussed. Furthermore, the expression of four stress-related and up-regulated genes was enhanced when the plants were subjected to salinity stress, suggesting that trifluralin induces a general stress response which protects the plant against fusarium wilt.

Original languageAmerican English
Pages (from-to)9-22
Number of pages14
JournalMolecular Plant Pathology
Volume8
Issue number1
DOIs
StatePublished - Jan 2007

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