The plant resistance inducer β-aminobutyric acid (BABA) induces an iron deficiency response in A. thaliana

Archive ouverte

Koen, Emmanuel | Brulé, Daphnée | Boni, Gilles | Wendehenne, David | Besson-Bard, Angelique

Edité par CCSD -

SPE IPM. National audience. β-aminobutyric acid (BABA) is a well-known plant resistance inducer. However, the molecular mechanisms underlying its effects are poorly understood. In the present study, we investigated whether BABA could act through the modification of iron homeostasis in Arabidopsis thaliana. Supporting this assumption, we obtained first evidences that BABA chelates iron with high affinity. We showed that pre-treatment of plants with BABA induced a drastic but transient iron deficiency response. Quantification of iron indicated that this response is related to the perturbation of iron distribution/availability rather than a reduction of iron assimilation. Finally, we provided evidence that the iron deficiency response triggered by BABA could be one of the determinants of its protective effects against Botrytis cinerea.

• Description
• Sujet/Public
• Outil
• Outil d'anticipation
• Mémoire et thèse
• Gestion