The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase
It is well established that cold acclimation processes are highly influenced, apart from cold ambient temperatures, by light-dependent environmental factors. In this study we investigated whether an extra blue (B) light supplementation would be able to further improve the well-documented freezing to...
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MDPI AG
2022-12-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/1/40 |
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| author | Mohamed Ahres Tamás Pálmai Terézia Kovács László Kovács Jozef Lacek Radomira Vankova Gábor Galiba Péter Borbély |
| author_facet | Mohamed Ahres Tamás Pálmai Terézia Kovács László Kovács Jozef Lacek Radomira Vankova Gábor Galiba Péter Borbély |
| author_sort | Mohamed Ahres |
| collection | DOAJ |
| description | It is well established that cold acclimation processes are highly influenced, apart from cold ambient temperatures, by light-dependent environmental factors. In this study we investigated whether an extra blue (B) light supplementation would be able to further improve the well-documented freezing tolerance enhancing effect of far-red (FR) enriched white (W) light. The impact of B and FR light supplementation to white light (WFRB) on hormone levels and lipid contents were determined in winter barley at moderate (15 °C) and low (5 °C) temperatures. Low R:FR ratio effectively induced frost tolerance in barley plantlets, but additional B light further enhanced frost hardiness at both temperatures. Supplementation of WFR (white light enriched with FR light) with B had a strong positive effect on abscisic acid accumulation while the suppression of salicylic acid and jasmonic acid levels were observed at low temperature which resembles the shade avoidance syndrome. We also observed clear lipidomic differences between the individual light and temperature treatments. WFRB light changed the total lipid content negatively, but monogalactosyldiacylglycerol (MGDG) content was increased, nonetheless. Our results prove that WFRB light can greatly influence phytohormone dynamics and lipid contents, which eventually leads to more efficient pre-hardening to avoid frost damage. |
| first_indexed | 2024-03-09T12:02:34Z |
| format | Article |
| id | doaj.art-417050b8237d4272a204f8c9059dae95 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T12:02:34Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-417050b8237d4272a204f8c9059dae952023-11-30T23:01:58ZengMDPI AGPlants2223-77472022-12-011214010.3390/plants12010040The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening PhaseMohamed Ahres0Tamás Pálmai1Terézia Kovács2László Kovács3Jozef Lacek4Radomira Vankova5Gábor Galiba6Péter Borbély7Centre for Agricultural Research, Agricultural Institute, Eötvös Loránd Research Network, H-2462 Martonvásár, HungaryCentre for Agricultural Research, Agricultural Institute, Eötvös Loránd Research Network, H-2462 Martonvásár, HungaryBiological Research Centre, Institute of Plant Biology, H-6701 Szeged, HungaryBiological Research Centre, Institute of Plant Biology, H-6701 Szeged, HungaryInstitute of Experimental Botany of the Czech Academy of Sciences, 165 02 Prague, Czech RepublicInstitute of Experimental Botany of the Czech Academy of Sciences, 165 02 Prague, Czech RepublicCentre for Agricultural Research, Agricultural Institute, Eötvös Loránd Research Network, H-2462 Martonvásár, HungaryCentre for Agricultural Research, Agricultural Institute, Eötvös Loránd Research Network, H-2462 Martonvásár, HungaryIt is well established that cold acclimation processes are highly influenced, apart from cold ambient temperatures, by light-dependent environmental factors. In this study we investigated whether an extra blue (B) light supplementation would be able to further improve the well-documented freezing tolerance enhancing effect of far-red (FR) enriched white (W) light. The impact of B and FR light supplementation to white light (WFRB) on hormone levels and lipid contents were determined in winter barley at moderate (15 °C) and low (5 °C) temperatures. Low R:FR ratio effectively induced frost tolerance in barley plantlets, but additional B light further enhanced frost hardiness at both temperatures. Supplementation of WFR (white light enriched with FR light) with B had a strong positive effect on abscisic acid accumulation while the suppression of salicylic acid and jasmonic acid levels were observed at low temperature which resembles the shade avoidance syndrome. We also observed clear lipidomic differences between the individual light and temperature treatments. WFRB light changed the total lipid content negatively, but monogalactosyldiacylglycerol (MGDG) content was increased, nonetheless. Our results prove that WFRB light can greatly influence phytohormone dynamics and lipid contents, which eventually leads to more efficient pre-hardening to avoid frost damage.https://www.mdpi.com/2223-7747/12/1/40barleycold acclimationlight-emitting diode (LED) lightingphytohormoneslipidomelight regulation |
| spellingShingle | Mohamed Ahres Tamás Pálmai Terézia Kovács László Kovács Jozef Lacek Radomira Vankova Gábor Galiba Péter Borbély The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase Plants barley cold acclimation light-emitting diode (LED) lighting phytohormones lipidome light regulation |
| title | The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase |
| title_full | The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase |
| title_fullStr | The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase |
| title_full_unstemmed | The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase |
| title_short | The Effect of White Light Spectrum Modifications by Excess of Blue Light on the Frost Tolerance, Lipid- and Hormone Composition of Barley in the Early Pre-Hardening Phase |
| title_sort | effect of white light spectrum modifications by excess of blue light on the frost tolerance lipid and hormone composition of barley in the early pre hardening phase |
| topic | barley cold acclimation light-emitting diode (LED) lighting phytohormones lipidome light regulation |
| url | https://www.mdpi.com/2223-7747/12/1/40 |
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