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Xiang J, Mlambo R, Shaw I, Seid Y, Shah H, He Y, Kpegah JKSK, Tan S, Zhou W, He B. Cryopreservation of bioflavonoid-rich plant sources and bioflavonoid-microcapsules: emerging technologies for preserving bioactivity and enhancing nutraceutical applications. Front Nutr 2023; 10:1232129. [PMID: 37781117 PMCID: PMC10538722 DOI: 10.3389/fnut.2023.1232129] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/25/2023] [Indexed: 10/03/2023] Open
Abstract
Bioflavonoids are natural polyphenolic secondary metabolites that are medicinal. These compounds possess antitumor, cardioprotective, anti-inflammatory, antimicrobial, antiviral, and anti-psoriasis properties to mention a few. Plant species that contain bioflavonoids should be preserved as such. Also, the bioactivity of the bioflavonoids as neutraceutical compounds is compromised following extraction due to their sensitivity to environmental factors like light, pH, and temperature. In other words, the bioflavonoids' shelf-life is affected. Scientists noticed that bioflavonoids have low solubility properties, poor absorption, and low bioavailability following consumption. Researchers came up with methods to encapsulate bioflavonoids in order to circumvent the challenges above and also to mask the unpleasant order these chemicals may have. Besides, scientists cryopreserve plant species that contain bioflavonoids. In this review, we discuss cryopreservation and bioflavonoid microencapsulation focusing mainly on vitrification, slow freezing, and freeze-drying microencapsulation techniques. In addition, we highlight bioflavonoid extraction techniques, medicinal properties, challenges, and future perspectives of cryopreservation and microencapsulation of bioflavonoids. Regardless of the uniqueness of cryopreservation and microencapsulation as methods to preserve bioflavonoid sources and bioflavonoids' bioactivity, there are challenges reported. Freeze-drying technology is costly. Cryoprotectants damage the integrity of plant cells, to say the least. Researchers are working very hard to overcome these challenges. Encapsulating bioflavonoids via coaxial electrospray and then cryopreserving the micro/nanocapsules produced can be very interesting.
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Affiliation(s)
- Jia Xiang
- Academician Workstation, Changsha Medical University, Changsha, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Ronald Mlambo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Ibrahim Shaw
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Yimer Seid
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Hamid Shah
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Yongju He
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, China
| | - Julius K S K Kpegah
- Department of Plastic Surgery, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Songwen Tan
- Academician Workstation, Changsha Medical University, Changsha, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Wenhu Zhou
- Academician Workstation, Changsha Medical University, Changsha, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Binsheng He
- Academician Workstation, Changsha Medical University, Changsha, China
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Bruňáková K, Bálintová M, Petijová L, Čellárová E. Does phenotyping of Hypericum secondary metabolism reveal a tolerance to biotic/abiotic stressors? FRONTIERS IN PLANT SCIENCE 2022; 13:1042375. [PMID: 36531362 PMCID: PMC9748567 DOI: 10.3389/fpls.2022.1042375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 10/24/2022] [Indexed: 06/17/2023]
Abstract
In this review we summarize the current knowledge about the changes in Hypericum secondary metabolism induced by biotic/abiotic stressors. It is known that the extreme environmental conditions activate signaling pathways leading to triggering of enzymatic and non-enzymatic defense systems, which stimulate production of secondary metabolites with antioxidant and protective effects. Due to several groups of bioactive compounds including naphthodianthrones, acylphloroglucinols, flavonoids, and phenylpropanes, the world-wide Hypericum perforatum represents a high-value medicinal crop of Hypericum genus, which belongs to the most diverse genera within flowering plants. The summary of the up-to-date knowledge reveals a relationship between the level of defense-related phenolic compounds and interspecific differences in the stress tolerance. The chlorogenic acid, and flavonoids, namely the amentoflavone, quercetin or kaempferol glycosides have been reported as the most defense-related metabolites associated with plant tolerance against stressful environment including temperature, light, and drought, in association with the biotic stimuli resulting from plant-microbe interactions. As an example, the species-specific cold-induced phenolics profiles of 10 Hypericum representatives of different provenances cultured in vitro are illustrated in the case-study. Principal component analysis revealed a relationship between the level of defense-related phenolic compounds and interspecific differences in the stress tolerance indicating a link between the provenance of Hypericum species and inherent mechanisms of cold tolerance. The underlying metabolome alterations along with the changes in the activities of ROS-scavenging enzymes, and non-enzymatic physiological markers are discussed. Given these data it can be anticipated that some Hypericum species native to divergent habitats, with interesting high-value secondary metabolite composition and predicted high tolerance to biotic/abiotic stresses would attract the attention as valuable sources of bioactive compounds for many medicinal purposes.
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Xing X, Liu M, Jiang F, Zhou R, Bai Y, Wei H, Zhang D, Wei J, Wu Z. Abscisic acid induces the expression of AsKIN during the recovery period of garlic cryopreservation. PLANT CELL REPORTS 2022; 41:1955-1973. [PMID: 36066602 DOI: 10.1007/s00299-022-02894-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Abscisic acid induced the expression of AsKIN during the recovery period of garlic cryopreservation. AsKIN was identified as a gene involved in cold and osmotic stress resistance. Cryopreservation has been proven to be effective in removing viruses from garlic. However, oxidative damage in cryopreservation has a significant impact on the survival after preservation. Abscisic acid (ABA) has been shown to reduce oxidative stress and promote the survival after cryopreservation. However, it is not clear which genes play important roles in this process. In this study, we added ABA to the dehydration step and analyzed the transcriptomic divergences between the ABA-treated group and the control group in three cryogenic steps (dehydration, unloading and recovery). By short time-series expression miner (STEM) analysis and weighted gene co-expression network analysis (WGCNA), the recovery step was identified as the period of significant changes in gene expression levels in cryopreservation. The addition of ABA promoted the upregulated expression of microtubule-related genes in the recovery step. We further identified AsKIN as a hub gene in the recovery step and verified its function. The results showed that overexpression of AsKIN enhanced the tolerance of Arabidopsis to oxidative stress in cryopreservation, influenced the expression of genes in response to cold and osmotic stress and promoted plant growth after stress. The AsKIN gene is likely to be involved in the plant response to cold stress and osmotic stress. These results reveal the molecular mechanisms of ABA in cryopreservation and elucidate the potential biological functions of the kinesin-14 subfamily.
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Affiliation(s)
- Xiaodong Xing
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Min Liu
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Fangling Jiang
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Rong Zhou
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Yunhe Bai
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Hanyu Wei
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Deng Zhang
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Jingjing Wei
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China
| | - Zhen Wu
- College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in East China, Ministry of Agriculture, Nanjing, China.
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Halmagyi A, Vălimăreanu S, Șovărel G, Coste A. Cryo-Technologies for Ex Situ Conservation of Rosa Germplasm. PLANTS 2022; 11:plants11081095. [PMID: 35448822 PMCID: PMC9027578 DOI: 10.3390/plants11081095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 11/16/2022]
Abstract
In this study, we compare two rapid cryopreservation (−196 °C) procedures, droplet-vitrification and encapsulation-dehydration for rose (Rosa × hybrida L., cultivars ‘Ioana’, ‘Mariana’, ‘Vulcan’). Significant factors for cryopreservation, such as sucrose concentration during osmoprotection, treatment duration with plant vitrification solution 2 (PVS2) in droplet-vitrification, duration of air desiccation and moisture content of alginate beads in encapsulation-dehydration, were investigated. In addition, the morphogenetic response to in vitro culture and to liquid nitrogen storage and the content in photosynthetic pigments have been assessed. The in vitro cultures were initiated from plant material originating from field collection. The highest regeneration frequencies were obtained for cv. ‘Vulcan’ in both of the cryopreservation procedures tested, 72% in droplet-vitrification and 65% following encapsulation-dehydration. The morphogenetic response (multiplication index and height of shoots) to liquid nitrogen storage was direct multiple shoot formation per initial shoot tip for all genotypes. The content in chlorophyll a and b was statistically comparable in plant material resulting from cryopreserved and non-cryopreserved shoot tips in all cultivars. The findings expand the information on Rosa‘s response to in vitro culture conditions and cryopreservation, providing protocols with a high regeneration capacity for the storage of genotypes with high ornamental value.
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Affiliation(s)
- Adela Halmagyi
- NIRDBS, Institute of Biological Research Cluj-Napoca, Republicii 48, 400015 Cluj-Napoca, Romania; (A.H.); (S.V.)
| | - Sergiu Vălimăreanu
- NIRDBS, Institute of Biological Research Cluj-Napoca, Republicii 48, 400015 Cluj-Napoca, Romania; (A.H.); (S.V.)
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Gabriela Șovărel
- Research and Development Institute for Vegetable and Flower Growing, Calea București 22, 077185 Vidra, Romania;
| | - Ana Coste
- NIRDBS, Institute of Biological Research Cluj-Napoca, Republicii 48, 400015 Cluj-Napoca, Romania; (A.H.); (S.V.)
- Correspondence:
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In Vitro Multiplication and NMR Fingerprinting of Rare Veronica caucasica M. Bieb. Molecules 2021; 26:molecules26195888. [PMID: 34641432 PMCID: PMC8512125 DOI: 10.3390/molecules26195888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 11/28/2022] Open
Abstract
Micropropagation of rare Veronica caucasica M. Bieb. was achieved by successful in vitro cultivation of mono-nodal segments on MS medium supplemented with 1.0 mg L–1 6-benzylaminopurine (BA) and then transferring the regenerated plants on hormone free basal MS medium for root development. In vitro multiplicated plants were successively acclimated in a growth chamber and a greenhouse with 92% survival. The number of plastid pigments and the total phenolics content in in vitro cultivated and ex vitro adapted plants were unchanged, and no accumulation of reactive oxygen species (ROS) was detected by staining with 3-3′-diaminobenzidine (DAB) and 2′,7′-dichlorofluorescein diacetate (DCF-DA). Nuclear Magnetic Resonance (NMR) fingerprinting allowed for the identification of the major alterations in metabolome of V. caucasica plants during the process of ex situ conservation. Iridoid glucosides such as verproside, aucubin and catalpol were characteristic for in vitro cultivated plants, while in ex vitro acclimated plants phenolic acid–protocatechuic acid and caffeic acid appeared dominant. The successful initiation of in vitro and ex vitro cultures is an alternative biotechnological approach for the preservation of V. caucasica and would allow for further studies of the biosynthetic potential of the species and the selection of lines with a high content of pharmaceutically valuable molecules and nutraceuticals.
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Khor SP, Yeow LC, Poobathy R, Zakaria R, Chew BL, Subramaniam S. Droplet-vitrification of Aranda Broga Blue orchid: Role of ascorbic acid on the antioxidant system and genetic fidelity assessments via RAPD and SCoT markers. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 26:e00448. [PMID: 32368510 PMCID: PMC7184254 DOI: 10.1016/j.btre.2020.e00448] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/22/2020] [Accepted: 03/28/2020] [Indexed: 11/07/2022]
Abstract
A droplet-vitrification cryopreservation protocol has been successfully developed for Aranda Broga Blue orchid hybrid using protocorm-like bodies (PLBs). However, maximum growth regeneration percentage was recorded at 5% only based on previous report. Thus, to improve growth recovery of cryopreserved PLBs, cryopreservation stages were supplemented with ascorbic acid, tested at 50, 100 and 150 mg/L. However, results demonstrated that exogenous ascorbic acid was not favorable in regeneration of cryopreserved explants (maximum value of 1.67 % with 50 mg/L ascorbic acid supplementation). Total soluble protein and various antioxidant enzyme activities such as catalase (CAT), superoxide dismutase (SOD) and ascorbate peroxidase (APX) were evaluated after each cryopreservation stages in conjunction with the application of exogenous ascorbic acid. Addition of antioxidant must be carefully evaluated and its application may not guarantee successful growth recovery. RAPD and SCoT molecular analysis confirmed the genetic stability of regenerated cryopreserved PLBs as no polymorphism was detected compared to control PLBs culture.
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Affiliation(s)
- Soo Ping Khor
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800, Gelugor, Penang, Malaysia
| | - Lit Chow Yeow
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800, Gelugor, Penang, Malaysia
| | - Ranjetta Poobathy
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800, Gelugor, Penang, Malaysia
- School of Biological Sciences, Quest International University, 30250, Ipoh, Perak, Malaysia
| | - Rahmad Zakaria
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800, Gelugor, Penang, Malaysia
| | - Bee Lynn Chew
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800, Gelugor, Penang, Malaysia
| | - Sreeramanan Subramaniam
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800, Gelugor, Penang, Malaysia
- Centre for Chemical Biology, Universiti Sains Malaysia, Bayan Lepas, Penang, Malaysia
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James Antony JJ, Zakaria S, Zakaria R, Anak Ujang J, Othman N, Subramaniam S. Biochemical analyses of Dendrobium Sabin Blue PLBs during cryopreservation by vitrification. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:1457-1467. [PMID: 31736548 PMCID: PMC6825076 DOI: 10.1007/s12298-019-00703-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 08/05/2019] [Accepted: 08/20/2019] [Indexed: 05/06/2023]
Abstract
Dendrobium Sabin Blue is an important orchid hybrid that has been grown extensively as cut flower, potted plant and is also popular for its deep purplish blue flowers. The most efficient long term conservation method of this hybrid is through cryopreservation. Cryopreservation involving the vitrification method consists of explants exposure to highly concentrated cryoprotective solution followed by freezing rapidly in liquid nitrogen. However, these treatments involved highly concentrated cryoprotectant that could incur toxicity to the explants. Hence, cryopreservation protocol requires biochemical analyses in understanding the damages or injuries occurred during cryopreservation treatments. In this study, biochemical analyses revealed a general reduction in chlorophyll, carotenoid and porphyrin content to 0.40 µg/g F W (thawing stage), 31.50 µg/g F W unloading stage and 2230.41 µg/g F W (thawing stage), respectively in comparison to the control treatments. In addition, increased level in proline content were obtained at different cryopreservation stages with highest level (5.42 µmole/g F W) recorded at the PVS2 dehydration stage. Fluctuated outcomes were obtained in catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POX) enzyme activities in PLBs exposed to different cryopreservation stages. Lowest values recorded for CAT enzyme activity were obtained at the dehydration stage (3.94 U/g). Lowest POX enzyme activities were obtained at the dehydration (122.36 U/g) and growth recovery (106.40 U/g) stages. Additionally, lowest APX enzyme activities values were recorded at the thawing (7.47 U/g) and unloading (7.28 U/g) stages. These have contributed to low regeneration of Dendrobium Sabin Blue protocorm like bodies (PLBs) following cryopreservation. Hence, in the future experimental design, exogenous antioxidant could be included in the cryopreservation procedures to improve the existing protocol.
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Affiliation(s)
- Jessica Jeyanthi James Antony
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800 Georgetown, Penang Malaysia
- Department of Crop Science, Faculty of Agricultural and Food Sciences, Universiti Putra Malaysia, Bintulu Sarawak Campus, Georgetown, Sarawak Malaysia
| | - Suhana Zakaria
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800 Georgetown, Penang Malaysia
| | - Rahmad Zakaria
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800 Georgetown, Penang Malaysia
| | - Jorim Anak Ujang
- Department of Crop Science, Faculty of Agricultural and Food Sciences, Universiti Putra Malaysia, Bintulu Sarawak Campus, Georgetown, Sarawak Malaysia
| | - Nurulhasanah Othman
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Georgetown, Pulau Pinang Malaysia
| | - Sreeramanan Subramaniam
- School of Biological Sciences, Universiti Sains Malaysia (USM), 11800 Georgetown, Penang Malaysia
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Prudente DDO, Paiva R, Domiciano D, Souza LBD, Carpentier S, Swennen R, Silva LC, Nery FC, Máximo WPF, Panis B. The cryoprotectant PVS2 plays a crucial role in germinating Passiflora ligularis embryos after cryopreservation by influencing the mobilization of lipids and the antioxidant metabolism. JOURNAL OF PLANT PHYSIOLOGY 2019; 239:71-82. [PMID: 31212099 DOI: 10.1016/j.jplph.2019.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 03/15/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Cryopreservation is a process whereby biological structures are preserved in liquid nitrogen (-196 °C) without losing their viability. Many cryopreservation techniques use the Plant Vitrification Solution 2 (PVS2) for cryoprotection. This study will therefore evaluate the influence of different exposure times to the cryoprotectant PVS2 and discuss the importance of the mobilization of reserves and the antioxidant metabolism during the germination of cryopreserved Passiflora ligularis embryos. The composition of P. ligularis seeds was analytically determined. We tested the germination capacity and the Germination Speed Index (GSI) of embryos (that is, seeds without external tegument) which were exposed to different PVS2 exposure times (0, 30, 60 and 120 min) at 30 days after thawing. Proline content, hydrogen peroxide, activity of isocitrate lyase (ICL), malate synthase (MSy), lipid peroxidation and antioxidant enzyme activities (SOD, CAT, APX) were measured at 7, 14 and 21 days after cryopreservation. The germination from cryopreserved embryos was maximal (85%) after 60 min PVS2 exposure with a GSI of 0.6. At 60 min, the highest activity of the enzymes involved in the glyoxylate cycle, ICL and MSy were recorded. We hypothesize that a 60 min exposure to PVS2 accelerates the reserve mobilization which correlates positively with germination. Until 60 min, there was a positive correlation between the PVS2 exposure time and the proline content, as well as the activity of antioxidant enzymes (SOD, CAT, APX), and a negative correlation with the lipid peroxidation. This study enables us to optimize the long-term conservation of this species. In conclusion, fundamental research is necessary to optimize the cryopreservation procedure, and this study offers an effective and efficient workflow which can be extrapolated to other (oil-rich) species.
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Affiliation(s)
- Débora de Oliveira Prudente
- Laboratório de Cultura de Tecidos de Plantas (LCTP UFLA), Departamento de Biologia, Universidade Federal de Lavras (UFLA), Lavras, MG, Brazil.
| | - Renato Paiva
- Laboratório de Cultura de Tecidos de Plantas (LCTP UFLA), Departamento de Biologia, Universidade Federal de Lavras (UFLA), Lavras, MG, Brazil
| | - Débora Domiciano
- Laboratório de Cultura de Tecidos de Plantas (LCTP UFLA), Departamento de Biologia, Universidade Federal de Lavras (UFLA), Lavras, MG, Brazil
| | - Lucas Batista de Souza
- Laboratório de Cultura de Tecidos de Plantas (LCTP UFLA), Departamento de Biologia, Universidade Federal de Lavras (UFLA), Lavras, MG, Brazil
| | - Sebastien Carpentier
- Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, Katholieke Universiteit Leuven (KU Leuven), W. De Croylaan 42, 3001 Heverlee, Belgium; Bioversity International, W. De Croylaan 42, 3001 Heverlee, Belgium
| | - Rony Swennen
- Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, Katholieke Universiteit Leuven (KU Leuven), W. De Croylaan 42, 3001 Heverlee, Belgium; Bioversity International, W. De Croylaan 42, 3001 Heverlee, Belgium; International Institute of Tropical Agriculture, POB 10, Duluti, Arusha, Tanzania
| | | | | | - Wesley Pires Flausino Máximo
- Laboratório de Cultura de Tecidos de Plantas (LCTP UFLA), Departamento de Biologia, Universidade Federal de Lavras (UFLA), Lavras, MG, Brazil
| | - Bart Panis
- Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, Katholieke Universiteit Leuven (KU Leuven), W. De Croylaan 42, 3001 Heverlee, Belgium; Bioversity International, W. De Croylaan 42, 3001 Heverlee, Belgium
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Isah T. Stress and defense responses in plant secondary metabolites production. Biol Res 2019; 52:39. [PMID: 31358053 PMCID: PMC6661828 DOI: 10.1186/s40659-019-0246-3] [Citation(s) in RCA: 437] [Impact Index Per Article: 87.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 07/23/2019] [Indexed: 01/25/2023] Open
Abstract
In the growth condition(s) of plants, numerous secondary metabolites (SMs) are produced by them to serve variety of cellular functions essential for physiological processes, and recent increasing evidences have implicated stress and defense response signaling in their production. The type and concentration(s) of secondary molecule(s) produced by a plant are determined by the species, genotype, physiology, developmental stage and environmental factors during growth. This suggests the physiological adaptive responses employed by various plant taxonomic groups in coping with the stress and defensive stimuli. The past recent decades had witnessed renewed interest to study abiotic factors that influence secondary metabolism during in vitro and in vivo growth of plants. Application of molecular biology tools and techniques are facilitating understanding the signaling processes and pathways involved in the SMs production at subcellular, cellular, organ and whole plant systems during in vivo and in vitro growth, with application in metabolic engineering of biosynthetic pathways intermediates.
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Affiliation(s)
- Tasiu Isah
- Department of Botany, School of Chemical and Life Sciences, Hamdard University, New Delhi, 110 062, India.
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Bruňáková K, Čellárová E. Modulation of anthraquinones and phloroglucinols biosynthesis in Hypericum spp. by cryogenic treatment. J Biotechnol 2017; 251:59-67. [DOI: 10.1016/j.jbiotec.2017.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/17/2017] [Accepted: 04/12/2017] [Indexed: 02/01/2023]
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Khan MN, Mobin M, Abbas ZK, ALMutairi KA. Impact of varying elevations on growth and activities of antioxidant enzymes of some medicinal plants of Saudi Arabia. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.chnaes.2015.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Bruňáková K, Čellárová E. Conservation Strategies in the Genus Hypericum via Cryogenic Treatment. FRONTIERS IN PLANT SCIENCE 2016; 7:558. [PMID: 27200032 PMCID: PMC4846653 DOI: 10.3389/fpls.2016.00558] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 04/11/2016] [Indexed: 05/25/2023]
Abstract
In the genus Hypericum, cryoconservation offers a strategy for maintenance of remarkable biodiversity, emerging from large inter- and intra-specific variability in morphological and phytochemical characteristics. Long-term cryostorage thus represents a proper tool for preservation of genetic resources of endangered and threatened Hypericum species or new somaclonal variants with unique properties. Many representatives of the genus are known as producers of pharmacologically important polyketides, namely naphthodianthrones and phloroglucinols. As a part of numerous in vitro collections, the nearly cosmopolitan Hypericum perforatum - Saint John's wort - has become a suitable model system for application of biotechnological approaches providing an attractive alternative to the traditional methods for secondary metabolite production. The necessary requirements for efficient cryopreservation include a high survival rate along with an unchanged biochemical profile of plants regenerated from cryopreserved cells. Understanding of the processes which are critical for recovery of H. perforatum cells after the cryogenic treatment enables establishment of cryopreservation protocols applicable to a broad number of Hypericum species. Among them, several endemic taxa attract a particular attention due to their unique characteristics or yet unrevealed spectrum of bioactive compounds. In this review, recent advances in the conventional two-step and vitrification-based cryopreservation techniques are presented in relation to the recovery rate and biosynthetic capacity of Hypericum spp. The pre-cryogenic treatments which were identified to be crucial for successful post-cryogenic recovery are discussed. Being a part of genetic predisposition, the freezing tolerance as a necessary precondition for successful post-cryogenic recovery is pointed out. Additionally, a beneficial influence of cold stress on modulating naphthodianthrone biosynthesis is outlined.
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