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Barbafieri M, Bretzel F, Scartazza A, Di Baccio D, Rosellini I, Grifoni M, Pini R, Clementi A, Franchi E. Response to Hypersalinity of Four Halophytes Growing in Hydroponic Floating Systems: Prospects in the Phytomanagement of High Saline Wastewaters and Extreme Environments. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091737. [PMID: 37176795 PMCID: PMC10181242 DOI: 10.3390/plants12091737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
Hypersaline environments occur naturally worldwide in arid and semiarid regions or in artificial areas where the discharge of highly saline wastewaters, such as produced water (PW) from oil and gas industrial setups, has concentrated salt (NaCl). Halophytes can tolerate high NaCl concentrations by adopting ion extrusion and inclusion mechanisms at cell, tissue, and organ levels; however, there is still much that is not clear in the response of these plants to salinity and completely unknown issues in hypersaline conditions. Mechanisms of tolerance to saline and hypersaline conditions of four different halophytes (Suaeda fruticosa (L.) Forssk, Halocnemum strobilaceum (Pall.) M. Bieb., Juncus maritimus Lam. and Phragmites australis (Cav.) Trin. ex Steudel) were assessed by analysing growth, chlorophyll fluorescence and photosynthetic pigment parameters, nutrients, and sodium (Na) uptake and distribution in different organs. Plants were exposed to high saline (257 mM or 15 g L-1 NaCl) and extremely high or hypersaline (514, 856, and 1712 mM or 30, 50, and 100 g L-1 NaCl) salt concentrations in a hydroponic floating culture system for 28 days. The two dicotyledonous S. fruticosa and H. strobilaceum resulted in greater tolerance to hypersaline concentrations than the two monocotyledonous species J. maritimus and P. australis. Plant biomass and major cation (K, Ca, and Mg) distributions among above- and below-ground organs evidenced the osmoprotectant roles of K in the leaves of S. fruticosa, and of Ca and Mg in the leaves and stem of H. strobilaceum. In J. maritimus and P. australis the rhizome modulated the reduced uptake and translocation of nutrients and Na to shoot with increasing salinity levels. S. fruticosa and H. strobilaceum absorbed and accumulated elevated Na amounts in the aerial parts at all the NaCl doses tested, with high bioaccumulation (from 0.5 to 8.3) and translocation (1.7-16.2) factors. In the two monocotyledons, Na increased in the root and rhizome with the increasing concentration of external NaCl, dramatically reducing the growth in J. maritimus at both 50 and 100 g L-1 NaCl and compromising the survival of P. australis at 30 g L-1 NaCl and over after two weeks of treatment.
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Affiliation(s)
- Meri Barbafieri
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Francesca Bretzel
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Andrea Scartazza
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Daniela Di Baccio
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Irene Rosellini
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Martina Grifoni
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Roberto Pini
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (IRET-CNR), Via Moruzzi 1, 56124 Pisa, Italy
| | - Alice Clementi
- Eni S.p.A., Subsurface and Wells R&D Projects, Via Maritano 26, San Donato Milanese, 20097 Milan, Italy
| | - Elisabetta Franchi
- Eni S.p.A., R&D Environmental &Biological Laboratories, Via Maritano 26, San Donato Milanese, 20097 Milan, Italy
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Rozentsvet OA, Bogdanova ES, Nurminsky VN, Nesterov VN, Chernyshov MY. Detergent-Resistant Membranes in Chloroplasts and Mitochondria of the Halophyte Salicornia perennans under Salt Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:1265. [PMID: 36986953 PMCID: PMC10058330 DOI: 10.3390/plants12061265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 06/19/2023]
Abstract
Halophytes represent important models for studying the key mechanisms of salt tolerance. One approach to the development of new knowledge of salt tolerance is to study the properties of detergent-resistant membranes (DRMs). In this work, the lipid profiles of DRMs of chloroplasts and mitochondria of euhalophyte Salicornia perennans Willd, before and after their exposure to shock concentrations of NaCl, have been investigated. We found that DRMs of chloroplasts are enriched in cerebrosides (CERs) and that sterols (STs) dominate the mass of mitochondrial DRMs. Also, it has been proven that (i) the impact of salinity provokes obvious growth in the content of CERs in DRMs of chloroplasts; (ii) the content of STs in DRMs of chloroplasts does not change under the influence of NaCl; (iii) salinity also causes some elevation in the content of monounsaturated and saturated fatty acids (FAs). Considering the fact that DRMs represent integral parts of both chloroplast and mitochondrial membranes, the authors have come to the conclusion that the cells of euhalophyte S. perennans, under the impact of salinity, presumes the choice (by the cell) of some specific composition of lipids and FAs in the membrane. This may be considered as a specific protection reaction of the plant cell against salinity.
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Affiliation(s)
- Olga A. Rozentsvet
- Samara Federal Research Scientific Center RAS, Institute of Ecology of Volga River Basin RAS, Russian Academy of Sciences, 10, Komzin St., 445003 Togliatti, Russia
| | - Elena S. Bogdanova
- Samara Federal Research Scientific Center RAS, Institute of Ecology of Volga River Basin RAS, Russian Academy of Sciences, 10, Komzin St., 445003 Togliatti, Russia
| | - Vadim N. Nurminsky
- Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch, Russian Academy of Sciences, 132, Lermontov St., 664033 Irkutsk, Russia
| | - Viktor N. Nesterov
- Samara Federal Research Scientific Center RAS, Institute of Ecology of Volga River Basin RAS, Russian Academy of Sciences, 10, Komzin St., 445003 Togliatti, Russia
| | - Michael Yu. Chernyshov
- Presidium of Irkutsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 134, Lermontov St., 664033 Irkutsk, Russia
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Effects of Arbuscular Mycorrhizal Fungus on Sodium and Chloride Ion Channels of Casuarina glauca under Salt Stress. Int J Mol Sci 2023; 24:ijms24043680. [PMID: 36835093 PMCID: PMC9966195 DOI: 10.3390/ijms24043680] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/04/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Casuarina glauca is an important coastal protection forest species, which is exposed to high salt stress all year round. Arbuscular mycorrhizal fungi (AMF) can promote the growth and salt tolerance of C. glauca under salt stress. However, the effects of AMF on the distribution of Na+ and Cl- and the expression of related genes in C. glauca under salt stress need to be further explored. This study explored the effects of Rhizophagus irregularis on plant biomass, the distribution of Na+ and Cl-, and the expression of related genes in C. glauca under NaCl stress through pot simulation experiments. The results revealed that the mechanisms of Na+ and Cl- transport of C. glauca under NaCl stress were different. C. glauca took a salt accumulation approach to Na+, transferring Na+ from roots to shoots. Salt accumulation of Na+ promoted by AMF was associated with CgNHX7. The transport mechanism of C. glauca to Cl- might involve salt exclusion rather than salt accumulation, and Cl- was no longer transferred to shoots in large quantities but started to accumulate in roots. However, AMF alleviated Na+ and Cl- stress by similar mechanisms. AMF could promote salt dilution of C. glauca by increasing biomass and the content of K+, compartmentalizing Na+ and Cl- in vacuoles. These processes were associated with the expression of CgNHX1, CgNHX2-1, CgCLCD, CgCLCF, and CgCLCG. Our study will provide a theoretical basis for the application of AMF to improve salt tolerance in plants.
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Wang S, Ge S, Mai W, Tian C. Nitrogen Promotes the Salt-Gathering Capacity of Suaeda salsa and Alleviates Nutrient Competition in the Intercropping of Suaeda salsa/ Zea mays L. Int J Mol Sci 2022; 23:ijms232415495. [PMID: 36555131 PMCID: PMC9779500 DOI: 10.3390/ijms232415495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/04/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
Nitrogen accelerates salt accumulation in the root zone of an euhalophyte, which might be beneficial for inhibiting the salt damage and interspecific competition for nutrients of non-halophytes in intercropping. However, the variations in the effect of euhalophyte/non-halophyte intercropping with nitrogen supply are poorly understood. Here, we selected the euhalophyte Suaeda salsa (suaeda) and non-halophyte Zea mays L. (maize) as the research objects, setting up three cropping patterns in order to explore the influence of nitrogen application on the intercropping effect in the suaeda/maize intercropping. The results showed that the biomass of maize in the intercropping was significantly lower than that in the monoculture, while for suaeda, it was higher in the intercropping than that in the monoculture. The biomass of maize under NO3--N treatment performed significantly higher than that under no nitrogen treatment. Moreover, under suitable NO3--N treatment, more salt ions (Na+, K+) gathered around the roots of suaeda, which weakened the salt damage on maize growth. In the intercropping, the effect of NO3--N on the maize growth was enhanced when compared with the non-significant effect of NH4+-N, but a positive effect of NH4+-N on suaeda growth was found. Therefore, the disadvantage of maize growth in the intercropping suaeda/maize might be caused by interspecific competition to a certain extent, providing an effective means for the improvement of saline-alkali land by phytoremediation.
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Affiliation(s)
- Shoule Wang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Shandong Institute of Pomology, Shandong Academy of Agricultural Sciences, Taian 271000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shaoqing Ge
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenxuan Mai
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Correspondence: (W.M.); (C.T.)
| | - Changyan Tian
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Correspondence: (W.M.); (C.T.)
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Rozentsvet O, Shuyskaya E, Bogdanova E, Nesterov V, Ivanova L. Effect of Salinity on Leaf Functional Traits and Chloroplast Lipids Composition in Two C 3 and C 4 Chenopodiaceae Halophytes. PLANTS (BASEL, SWITZERLAND) 2022; 11:2461. [PMID: 36235330 PMCID: PMC9572261 DOI: 10.3390/plants11192461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Salt stress is one of the most common abiotic kinds of stress. Understanding the key mechanisms of salt tolerance in plants involves the study of halophytes. The effect of salinity was studied in two halophytic annuals of Chenopodiaceae Salicornia perennans Willd. and Climacoptera crassa (Bied.) Botsch. These species are plants with C3 and C4-metabolism, respectively. We performed a comprehensive analysis of the photosynthetic apparatus of these halophyte species at different levels of integration. The C3 species S. perennans showed larger variation in leaf functional traits-both at the level of cell morphology and membrane system (chloroplast envelope and thylakoid). S. perennans also had larger photosynthetic cells, by 10-15 times, and more effective mechanisms of osmoregulation and protecting cells against the toxic effect of Na+. Salinity caused changes in photosynthetic tissues of C. crassa such as an increase of the mesophyll cell surface, the expansion of the interface area between mesophyll and bundle sheath cells, and an increase of the volume of the latter. These functional changes compensated for scarce CO2 supply when salinity increased. Overall, we concluded that these C3 and C4 Chenopodiaceae species demonstrated different responses to salinity, both at the cellular and subcellular levels.
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Affiliation(s)
- Olga Rozentsvet
- Samara Federal Research Scientific Center Russian Academy of Sciences, Institute of Ecology of Volga River Basin, Russian Academy of Sciences, 445003 Togliatti, Russia
| | - Elena Shuyskaya
- K. A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Elena Bogdanova
- Samara Federal Research Scientific Center Russian Academy of Sciences, Institute of Ecology of Volga River Basin, Russian Academy of Sciences, 445003 Togliatti, Russia
| | - Viktor Nesterov
- Samara Federal Research Scientific Center Russian Academy of Sciences, Institute of Ecology of Volga River Basin, Russian Academy of Sciences, 445003 Togliatti, Russia
| | - Larisa Ivanova
- The Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia
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Rozentsvet OA, Bogdanova ES, Nesterov VN, Shevchenko SN, Bakunov AL, Milekhin AV, Rubtsov SL. Productivity and Dynamics of Morphological, Physiological, and Biochemical Parameters of Potatoes in Arid Climate. DOKLADY BIOLOGICAL SCIENCES : PROCEEDINGS OF THE ACADEMY OF SCIENCES OF THE USSR, BIOLOGICAL SCIENCES SECTIONS 2021; 497:65-68. [PMID: 33948820 DOI: 10.1134/s0012496621020095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 12/24/2020] [Accepted: 12/25/2020] [Indexed: 11/22/2022]
Abstract
Interrelation between the morphology, physiology, biochemistry, and productivity of potato plants was shown for the first time using the example of a mid-season-ripening variety (v.) Siversky and a mid-early Tretyakovka v. The yield of Siversky v. turned out to be 1.6 times higher than the yield of Tretyakovka. Aboveground biomass of Siversky v. was distinguished by an increased content of photosynthetic pigments, a greater variability of the protein and lipid metabolism indicators, and more intense oxidation processes and antioxidant protection, which can be the key to its greater productivity. Multivariate statistical analysis showed that the greatest relationship in the climatic conditions of central Russia in 2020 was found for productivity and such indicators as the stomata number per unit leaf area, the number of stems, and the content of pigments, phospholipids, neutral lipids, and water-soluble part of the protein. Thus, both morphological and physiological-biochemical properties can influence the course and direction of the production process, and, hence, the yield of a certain variety.
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Affiliation(s)
- O A Rozentsvet
- Samara Federal Research Scientific Center, Russian Academy of Sciences, Institute of Ecology of Volga River Basin, Russian Academy of Sciences, 445003, Togliatti, Russia.
| | - E S Bogdanova
- Samara Federal Research Scientific Center, Russian Academy of Sciences, Institute of Ecology of Volga River Basin, Russian Academy of Sciences, 445003, Togliatti, Russia
| | - V N Nesterov
- Samara Federal Research Scientific Center, Russian Academy of Sciences, Institute of Ecology of Volga River Basin, Russian Academy of Sciences, 445003, Togliatti, Russia
| | - S N Shevchenko
- Samara Federal Research Scientific Center, Russian Academy of Sciences, 443001, Samara, Russia
| | - A L Bakunov
- Samara Federal Research Scientific Center, Russian Academy of Sciences, Samara Scientific Research Agriculture Institute named after N.M.Tulaykov, Russian Academy of Sciences, 446250, Bezenchuk, Russia
| | - A V Milekhin
- Samara Federal Research Scientific Center, Russian Academy of Sciences, Samara Scientific Research Agriculture Institute named after N.M.Tulaykov, Russian Academy of Sciences, 446250, Bezenchuk, Russia
| | - S L Rubtsov
- Samara Federal Research Scientific Center, Russian Academy of Sciences, Samara Scientific Research Agriculture Institute named after N.M.Tulaykov, Russian Academy of Sciences, 446250, Bezenchuk, Russia
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Rozentsvet OA, Nesterov VN, Kosobryukhov AA, Bogdanova ES, Rozenberg GS. Physiological and Biochemical Determinants of Halophyte Adaptive Strategies. RUSS J ECOL+ 2021. [DOI: 10.1134/s1067413621010124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Halophytes have been studied as a model for morphological traits of adaptation to saline environments. However, little information has been given on plant growth, chlorophyll fluorescence responses, and change of ion content in halophytes grown in an aniline–salinity coexistent environment. This study hypothesized that aniline could induce alterations in plant growth, chlorophyll fluorescence, and ion content in Suaeda salsa, but salinity could promote the tolerance of halophytes to aniline. A 6 (aniline) × 3 (NaCl) factorial experiment (for a total of 18 treatments) was conducted to test the above hypothesis. After 30 d of cultivation, roots and shoots were harvested separately to analyze the effects of salinity on the seedling growth under aniline stress. Biomass accumulation was inhibited by aniline treatment, and the inhibition was significantly alleviated by 200 mM NaCl. The change in chlorophyll fluorescence in leaves with aniline stress was moderated by the addition of NaCl. The removal efficiency of aniline was significantly enhanced by moderate salinity. Aniline stress decreased the accumulation of Mg2+, but various concentrations of NaCl increased the accumulation of Mg2+, especially with 200 mM NaCl in both roots and shoots. Both aniline and salinity decreased the content of Ca2+. There was a negative correlation between the K+ and NaCl concentrations and between the Cl− and aniline concentrations. Our results indicated that Suaeda salsa may be suitable for the remediation of salinity and aniline-enriched wastewater.
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Rozentsvet OA, Nesterov VN, Bogdanova ES, Rozenberg GS. Physiological and Biochemical Strategies of Adaptation in Halophytes. DOKLADY BIOLOGICAL SCIENCES : PROCEEDINGS OF THE ACADEMY OF SCIENCES OF THE USSR, BIOLOGICAL SCIENCES SECTIONS 2020; 492:83-85. [PMID: 32632832 DOI: 10.1134/s0012496620030072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/11/2020] [Accepted: 02/11/2020] [Indexed: 11/23/2022]
Abstract
The relationship between the ecological adaptive strategies of some halophyte groups and their metabolism has been demonstrated; this correlation determines their competitive capabilities and place in the ecosystem. The features of the content of total and membrane lipids, chlorophylls, carotenoids, and membrane and water-soluble proteins, as well as the level of lipid peroxidation, hydration of photosynthetic organs, and sodium accumulation in euhalophytes, crynohalophytes, and glycohalophytes, which are confined to different levels of soil salinity, have been established.
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Affiliation(s)
- O A Rozentsvet
- Institute of Ecology of the Volga River Basin, Samara Federal Research Center, Russian Academy of Sciences, Togliatti, Russia
| | - V N Nesterov
- Institute of Ecology of the Volga River Basin, Samara Federal Research Center, Russian Academy of Sciences, Togliatti, Russia.
| | - E S Bogdanova
- Institute of Ecology of the Volga River Basin, Samara Federal Research Center, Russian Academy of Sciences, Togliatti, Russia
| | - G S Rozenberg
- Institute of Ecology of the Volga River Basin, Samara Federal Research Center, Russian Academy of Sciences, Togliatti, Russia
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Li L, Zhao Y, Han G, Guo J, Meng Z, Chen M. Progress in the Study and Use of Seawater Vegetables. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5998-6006. [PMID: 32374599 DOI: 10.1021/acs.jafc.0c00346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As global soil salinization increases, halophytes that can grow in saline soils are the primary choice for improving soil quality. Some halophytes can even be irrigated with seawater and used as vegetables. These so-called seawater vegetables include those that can be planted on saline and alkali soils and some edible halophytes and ordinary vegetables that are salt-tolerant. The cultivation of seawater vegetables on saline soil has become a matter of increasing interest. In this review, we focus on the salt-tolerance mechanisms and potential applications of some seawater vegetables. We also summarize their value to health, medicine, industry, and the economy as a whole. Further improvement and development to support the use of seawater vegetables will require in-depth research at the cellular and molecular levels.
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Affiliation(s)
- Lingyu Li
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China
| | - Yang Zhao
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China
| | - Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China
| | - Jianrong Guo
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China
| | - Zhe Meng
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China
| | - Min Chen
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, P.R. China
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Rozentsvet O, Nesterkina I, Ozolina N, Nesterov V. Detergent-resistant microdomains (lipid rafts) in endomembranes of the wild halophytes. FUNCTIONAL PLANT BIOLOGY : FPB 2019; 46:869-876. [PMID: 31196376 DOI: 10.1071/fp18263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
In the present work, we studied detergent-resistant membrane microdomains (DRM) of chloroplasts and mitochondria - organelles that provide photosynthesis and respiration in a plant cell. The objects of the study were euhalophyte Salicorniaperennans Willd., which relates to salt-accumulating plants and glycohalophyte Artemisia santonica L., which relates to salt-excluder plants. To get DRM, the chloroplast and mitochondria fractions were solubilised with a solution containing Triton X-100. The resulting material was introduced in sucrose gradient of 35-25-15-5% and centrifuged at 200000 g, 2 h. The presence of an opalescent detergent-resistant zone of membranes in 15% sucrose layer and a specific lipid composition of this zone were the signs of successful rafts obtaining of. The isolated DRM are sterol- and cerebroside-enriched (27-89% of the sum of membrane lipids) domains with a high degree of saturation of fatty acids composition (more than 50% of the sum). The main DRM-specific lipids of chloroplast of A. santonica glycohalophyte are cerebrosides, whereas those of S. perennans euhalophyte are sterols. The revealed differences in the composition of raft-forming lipids in chloroplast and mitochondria halophyte membranes, differing in the salt-resistance strategy, suggest the participation of rafts in salt-resistance mechanisms.
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Affiliation(s)
- Olga Rozentsvet
- Institute of Ecology of the Volga Basin Russian Academy of Science, 10, Komzin Str, Togliatti 445003, Russia
| | - Irina Nesterkina
- Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch, Russian Academy of Sciences, 132, Lermontov Str, Irkutsk 664033, Russia
| | - Natalia Ozolina
- Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch, Russian Academy of Sciences, 132, Lermontov Str, Irkutsk 664033, Russia
| | - Viktor Nesterov
- Institute of Ecology of the Volga Basin Russian Academy of Science, 10, Komzin Str, Togliatti 445003, Russia; and Corresponding author.
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