<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In nature, plants are constantly challenged by an array of drought episodes, which critically affect the distribution of the plants. The drought episodes might occur recurrently, so the plants endure drought by adjusting and shifting their metabolisms. The impacts of subjecting plants to drought stress have been widely investigated, but reports on how reiterated drought stress affects the plants are limited. The present study was designed to investigate the response of lavender, a reputed medicinal and aromatic plant, against single drought, recovery and reiterated drought stress at greenhouse conditions. In this regard, the experimental design was based on three cycles of 11 days of drought by withholding water, followed by subsequent periods of 6 days of recovery, and then double-stressed and single-stressed periods. As expected, the present findings revealed that single stress decreased the fresh and dry weights of the leaf, stem and root. Reiterated drought stress caused critical reductions in the fresh weight of the leaf, stem and root, while the dry weight of stem and root were not significantly affected. Of the estimated traits, only the dry weight of leaf increased with reiterated drought stress. The mineral status of the leaves was adversely affected with single stress, but the effects of recovery and reiterated stress were not in accordance with the improvement in water contents of the leaf and soil. Regarding essential oil compounds, eucalyptol, camphor and endo-borneol were predominant. Single and reiterated drought stress increased camphor percentage, while recovery and full irrigation decreased the percentage. Endo-borneol was decreased under single stress, but reiterated stress increased the percentage of the compound. Considering the phenolic acids, stressed and non-stressed groups were well discriminated and hence, phenolic acids might be useful as good indicators of the stress response in lavender.</p>
</abstract>

In nature, plants are constantly challenged by an array of drought episodes, which critically affect the distribution of the plants. The drought episodes might occur recurrently, so the plants endure drought by adjusting and shifting their metabolisms. The impacts of subjecting plants to drought stress have been widely investigated, but reports on how reiterated drought stress affects the plants are limited. The present study was designed to investigate the response of lavender, a reputed medicinal and aromatic plant, against single drought, recovery and reiterated drought stress at greenhouse conditions. In this regard, the experimental design was based on three cycles of 11 days of drought by withholding water, followed by subsequent periods of 6 days of recovery, and then double-stressed and single-stressed periods. As expected, the present findings revealed that single stress decreased the fresh and dry weights of the leaf, stem and root. Reiterated drought stress caused critical reductions in the fresh weight of the leaf, stem and root, while the dry weight of stem and root were not significantly affected. Of the estimated traits, only the dry weight of leaf increased with reiterated drought stress. The mineral status of the leaves was adversely affected with single stress, but the effects of recovery and reiterated stress were not in accordance with the improvement in water contents of the leaf and soil. Regarding essential oil compounds, eucalyptol, camphor and endo-borneol were predominant. Single and reiterated drought stress increased camphor percentage, while recovery and full irrigation decreased the percentage. Endo-borneol was decreased under single stress, but reiterated stress increased the percentage of the compound. Considering the phenolic acids, stressed and non-stressed groups were well discriminated and hence, phenolic acids might be useful as good indicators of the stress response in lavender.

Agronomic traits, secondary metabolites and element concentrations of <italic>Lavandula angustifolia</italic> leaves as a response to single or reiterated drought stress: How effective is the previously experienced stress?

Department of Field Crops, Faculty of Agriculture

Department of Organic Farming, College of Applied Science

Department of Horticulture, Faculty of Horticulture

Department of Plant Genetics and Production, Faculty of Agriculture

Department of Herbal and Animal Production, Vocational School of Technical Sciences

Folia Horticulturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Agronomic traits, secondary metabolites and element concentrations of  leaves as a response to single or reiterated drought stress: How effective is the previously experienced stress?

In nature, plants are constantly challenged by an array of drought episodes, which critically affect the distribution of the plants. The drought episodes might...

Agronomic traits, secondary metabolites and element concentrations of Lavandula angustifolia leaves as a response to single or reiterated drought stress: How effective is the previously experienced stress?

Article Category: Original Article

Publicado en línea: 27 feb 2022

Páginas: 1 - 16

Recibido: 19 oct 2021

Aceptado: 19 ene 2022

DOI: https://doi.org/10.2478/fhort-2022-0005

Palabras clave
abiotic stress, lavender, plant stress memory, secondary metabolites, water stress

© 2022 Ahmet Metin Kumlay et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Agronomic traits, secondary metabolites and element concentrations of Lavandula angustifolia leaves as a response to single or reiterated drought stress: How effective is the previously experienced stress?

Article Category: Original Article

Publicado en línea: 27 feb 2022

Páginas: 1 - 16

Recibido: 19 oct 2021

Aceptado: 19 ene 2022

DOI: https://doi.org/10.2478/fhort-2022-0005

Palabras claveabiotic stress, lavender, plant stress memory, secondary metabolites, water stress

© 2022 Ahmet Metin Kumlay et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Palabras clave
abiotic stress, lavender, plant stress memory, secondary metabolites, water stress