| Title: | Smelling the metal: Volatile organic compound emission under Zn excess in the mint Tetradenia riparia |
| Author(s): | Bibbiani S; Colzi I; Taiti C; Guidi Nissim W; Papini A; Mancuso S; Gonnelli C; |
| Address: | "Department of Agrifood Production and Environmental Sciences - Universita degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy. Electronic address: susanna.bibbiani@unifi.it. Department of Biology, Universita degli Studi di Firenze, via Micheli 1, 50121 Florence, Italy. Electronic address: ilaria.colzi@unifi.it. Department of Agrifood Production and Environmental Sciences - Universita degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy. Electronic address: cosimo.taiti@unifi.it. Department of Agrifood Production and Environmental Sciences - Universita degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy. Electronic address: werther.guidinissim@unifi.it. Department of Biology, Universita degli Studi di Firenze, via Micheli 1, 50121 Florence, Italy. Electronic address: alessio.papini@unifi.it. Department of Agrifood Production and Environmental Sciences - Universita degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy. Electronic address: stefano.mancuso@unifi.it. Department of Biology, Universita degli Studi di Firenze, via Micheli 1, 50121 Florence, Italy. Electronic address: cristina.gonnelli@unifi.it" |
| DOI: | 10.1016/j.plantsci.2018.03.006 |
| ISSN/ISBN: | 1873-2259 (Electronic) 0168-9452 (Linking) |
| Abstract: | "This work investigated the effect of Zn excess on growth, metal accumulation and photosynthetic changes in Tetradenia riparia, in relation to possible variations in the composition of the plant volatilome. Experiments were carried out in hydroponics exposing plants to a range of Zn concentrations. Zinc excess negatively affected plant growth in a dose-dependent manner. The metal was accumulated proportionally to its concentration in the medium and preferentially allocated to roots. All the photosynthetic parameters and the concentration of some photosynthetic pigments were negatively affected by Zn, whereas the level of leaf total soluble sugars remained unchanged. Twenty-three different VOCs were identified in the plant volatilome. Each compound was emitted at a different level and intensity of emission was manifold increased by the presence of Zn in the growth medium. The Zn-induced compounds could represent both an adaptive response (f.i. methanol, acetylene, C(6)-aldehydes, isoprene, terpenes) and a damage by-product (f.i. propanal, acetaldehyde, alkyl fragments) of the metal presence in the culture medium. Given that the Zn-mediated induction of those VOCs, considered protective, occurred even under a Zn-limited photosynthetic capacity, our work supports the hypothesis of an active role of such molecules in an adaptive plant response to trace metal stress" |
| Keywords: | Carotenoids/analysis Chlorophyll/analysis Lamiaceae/drug effects/growth & development/*metabolism Photosynthesis/drug effects Plant Leaves/chemistry Volatile Organic Compounds/*metabolism Zinc/*metabolism/pharmacology Medicinal plant Photosynthetic parame; |
| Notes: | "MedlineBibbiani, Susanna Colzi, Ilaria Taiti, Cosimo Guidi Nissim, Werther Papini, Alessio Mancuso, Stefano Gonnelli, Cristina eng Ireland 2018/04/14 Plant Sci. 2018 Jun; 271:1-8. doi: 10.1016/j.plantsci.2018.03.006. Epub 2018 Mar 9" |
