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Common and Distinct Gene Expression Patterns Induced by the Herbicides 2,4‐Dichlorophenoxyacetic Acid, Cinidon‐ethyl and Tribenuron‐methyl in Wheat by Frédérique Pasquer; Urs Ochsner; Jürg Zarn; Beat Keller is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract In wheat, herbicides are used to control weeds. Little is known about the changes induced in the metabolism of tolerant plants after herbicide treatment. The impact of three herbicides [2,4‐dichlorophenoxyacetic acid (2,4‐D), cinidon‐ethyl and tribenuron‐methyl] on the wheat transcriptome was studied using cDNA microarrays. Gene expression of plants grown in a controlled environment or in the field was studied between 24 h and 2 weeks after treatment. Under controlled conditions, 2,4‐D induced genes of the phenylpropanoid pathway soon after treatment. Cinidon‐ethyl triggered peroxidase and defence‐related gene expression under controlled conditions, probably because reactive oxygen species are released by photo‐oxidation of protoporphyrin‐IX. The same genes were upregulated in the field as under controlled conditions, albeit at a weaker level. These results show that cinidon‐ethyl specifically induces genes involved in plant defence. Under controlled conditions, tribenuron‐methyl did not change the expression profile immediately after treatment, but defence‐related genes were upregulated after 1 week. Sulfonylurea compounds such as tribenuron‐methyl specifically inhibit

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Author

Frédérique Pasquer; Urs Ochsner; Jürg Zarn; Beat Keller

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1526-498X)

Published

2006

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)