Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems
Abstract Background In earlier studies [1], we indicated that applying brassinosteroids (BRs) to lipids that had been isolated from plants altered the physicochemical properties of the monolayers. A continuation of these dependencies using the defined model lipid systems is presented in this paper....
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| Format: | Article |
| Language: | English |
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BMC
2022-05-01
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| Series: | BMC Plant Biology |
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| Online Access: | https://doi.org/10.1186/s12870-022-03619-4 |
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| author | Elżbieta Rudolphi-Szydło Barbara Dyba Anna Janeczko Dariusz Latowski Iwona Sadura Maria Filek |
| author_facet | Elżbieta Rudolphi-Szydło Barbara Dyba Anna Janeczko Dariusz Latowski Iwona Sadura Maria Filek |
| author_sort | Elżbieta Rudolphi-Szydło |
| collection | DOAJ |
| description | Abstract Background In earlier studies [1], we indicated that applying brassinosteroids (BRs) to lipids that had been isolated from plants altered the physicochemical properties of the monolayers. A continuation of these dependencies using the defined model lipid systems is presented in this paper. The influence of homocastasterone (HCS) and castasterone (CS) (BRs for which the increase in concentration were characteristic of plants grown at low temperatures) on the membrane properties of their polar and the hydrophobic parts were studied. Results Changes in the electrokinetic potential indicate that both BRs decreased the negative charge of the surface, which is an important factor in modifying the contacts with the polar substances. This property of BRs has not yet been described. The studies of the interactions that occur in the hydrophobic part of the membrane were investigated using the EPR methods and Langmuir techniques. The physicochemical parameters of the lipid structure were determined, and the excess of Gibbs free energy was calculated. Conclusion We conclude that examined BRs modify both the hydrophilic and hydrophobic properties of the membranes, but to a greater extent HCS. The consequence of these changes may be the attempt to maintain the stability of the membranes in stressful temperature conditions and / or to the possibility of adsorption of other substances on membranes surfaces. The change of plant metabolism towards increasing the amount of BR, mainly HCS (under cooling) may by an important factor for maintaining optimal structural properties of membranes and their functionality despite temperature changes. |
| first_indexed | 2024-04-13T18:51:25Z |
| format | Article |
| id | doaj.art-001216e473324844935a59beff6efeee |
| institution | Directory Open Access Journal |
| issn | 1471-2229 |
| language | English |
| last_indexed | 2024-04-13T18:51:25Z |
| publishDate | 2022-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Plant Biology |
| spelling | doaj.art-001216e473324844935a59beff6efeee2022-12-22T02:34:24ZengBMCBMC Plant Biology1471-22292022-05-0122111610.1186/s12870-022-03619-4Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systemsElżbieta Rudolphi-Szydło0Barbara Dyba1Anna Janeczko2Dariusz Latowski3Iwona Sadura4Maria Filek5Institute of Biology, Pedagogical UniversityInstitute of Biology, Pedagogical UniversityPolish Academy of Sciences, The Franciszek Górski Institute of Plant PhysiologyDepartment of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian UniversityPolish Academy of Sciences, The Franciszek Górski Institute of Plant PhysiologyInstitute of Biology, Pedagogical UniversityAbstract Background In earlier studies [1], we indicated that applying brassinosteroids (BRs) to lipids that had been isolated from plants altered the physicochemical properties of the monolayers. A continuation of these dependencies using the defined model lipid systems is presented in this paper. The influence of homocastasterone (HCS) and castasterone (CS) (BRs for which the increase in concentration were characteristic of plants grown at low temperatures) on the membrane properties of their polar and the hydrophobic parts were studied. Results Changes in the electrokinetic potential indicate that both BRs decreased the negative charge of the surface, which is an important factor in modifying the contacts with the polar substances. This property of BRs has not yet been described. The studies of the interactions that occur in the hydrophobic part of the membrane were investigated using the EPR methods and Langmuir techniques. The physicochemical parameters of the lipid structure were determined, and the excess of Gibbs free energy was calculated. Conclusion We conclude that examined BRs modify both the hydrophilic and hydrophobic properties of the membranes, but to a greater extent HCS. The consequence of these changes may be the attempt to maintain the stability of the membranes in stressful temperature conditions and / or to the possibility of adsorption of other substances on membranes surfaces. The change of plant metabolism towards increasing the amount of BR, mainly HCS (under cooling) may by an important factor for maintaining optimal structural properties of membranes and their functionality despite temperature changes.https://doi.org/10.1186/s12870-022-03619-4BrassinosteroidsHomocastasteroneCastasteroneCell membraneLangmuir technic, plant, EPR method, electrokinetic potential |
| spellingShingle | Elżbieta Rudolphi-Szydło Barbara Dyba Anna Janeczko Dariusz Latowski Iwona Sadura Maria Filek Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems BMC Plant Biology Brassinosteroids Homocastasterone Castasterone Cell membrane Langmuir technic, plant, EPR method, electrokinetic potential |
| title | Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems |
| title_full | Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems |
| title_fullStr | Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems |
| title_full_unstemmed | Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems |
| title_short | Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems |
| title_sort | brassinosteroid lipid membrane interaction under low and high temperature stress in model systems |
| topic | Brassinosteroids Homocastasterone Castasterone Cell membrane Langmuir technic, plant, EPR method, electrokinetic potential |
| url | https://doi.org/10.1186/s12870-022-03619-4 |
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