Overall 90 volatile compoundswere recognized in well-watered and mild drought-stressed samples of two wild Iranian ecotypes of S. reuterana Boiss., namely S. reuterana A and S. reuterana B, and of S. officinalis L. (control) during the main phenological stages (vegetative, pre-flowering and flowering). In water-stressed S. officinalis the total level of volatiles increased (50,03 %) at the vegetative stage, while it decreased (-11,11 %) at the flowering stage. In drought-stressed S. reuterana A, volatiles amount decreased both at vegetative (-74,62 %) and pre-flowering (-31,34 %) stages, whereas control and water-stressed S. reuterana B showed similar volatile levels in all the stages. The Orthogonal Partial Least-Squares Discriminant Analysis (OPLS-DA) revealed that, excluding S. officinalis at the flowering stage, control and drought-stressed samples can be differentiated based on their volatile contents and despite the phenological stage. Moreover, OPLS-DA indicated that linalool and p-methylanisole can be considered putative biomarkers of the water deficit conditions in S. officinalis and S. reuterana A. Finally, as, when cultivated, S. reuterana A and S. officinalis seemed to show similar volatiles patterns, the cultivation of the Iranian ecotype A could provide a valuable source of natural antioxidants for the preparation of novel functional foods, pharmaceutical and cosmetics ingredients.

Assessment of volatile compounds as potential markers of water deficit stress of two wild ecotypes of Salvia reuterana Boiss

Cozzolino R.;Piacente S.;
2021-01-01

Abstract

Overall 90 volatile compoundswere recognized in well-watered and mild drought-stressed samples of two wild Iranian ecotypes of S. reuterana Boiss., namely S. reuterana A and S. reuterana B, and of S. officinalis L. (control) during the main phenological stages (vegetative, pre-flowering and flowering). In water-stressed S. officinalis the total level of volatiles increased (50,03 %) at the vegetative stage, while it decreased (-11,11 %) at the flowering stage. In drought-stressed S. reuterana A, volatiles amount decreased both at vegetative (-74,62 %) and pre-flowering (-31,34 %) stages, whereas control and water-stressed S. reuterana B showed similar volatile levels in all the stages. The Orthogonal Partial Least-Squares Discriminant Analysis (OPLS-DA) revealed that, excluding S. officinalis at the flowering stage, control and drought-stressed samples can be differentiated based on their volatile contents and despite the phenological stage. Moreover, OPLS-DA indicated that linalool and p-methylanisole can be considered putative biomarkers of the water deficit conditions in S. officinalis and S. reuterana A. Finally, as, when cultivated, S. reuterana A and S. officinalis seemed to show similar volatiles patterns, the cultivation of the Iranian ecotype A could provide a valuable source of natural antioxidants for the preparation of novel functional foods, pharmaceutical and cosmetics ingredients.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4771456
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