Impact of putrescine on essential oil composition, free polyamines content and expression of related genes (DXR and TPS2) in Thymus daenensis under drought stress.

ABSTRACT:

Background

Thymus daenensis, an aromatic medicinal plant endemic to Iran, produces essential oils rich in thymol and carvacrol, which exhibit potent antioxidant and antimicrobial properties. Drought stress can alter secondary metabolite biosynthetic pathways, potentially enhancing the plant's stress tolerance mechanisms. Polyamines (PAs), particularly putrescine (Put), are known to mitigate drought-induced damage by modulating stomatal conductance, enhancing osmotic adjustment, and regulating oxidative stress responses. This study investigated the effects of exogenous Put on T. daenensis under drought stress, with a focus on gene expression related to terpenoid biosynthesis, secondary metabolite accumulation, and free PA content.

Results

Six-week-old T. daenensis plants were

SUBMITTER: Shahroudi E 

PROVIDER: S-EPMC12486884 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature