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Benelli C, Tarraf W, İzgü T, Anichini M, Faraloni C, Salvatici MC, Jouini N, Germanà MA, Danti R, Lambardi M. Long-Term Conservation for the Safeguard of Abies nebrodensis: An Endemic and Endangered Species of Sicily. PLANTS (BASEL, SWITZERLAND) 2024; 13:1682. [PMID: 38931114 PMCID: PMC11207786 DOI: 10.3390/plants13121682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024]
Abstract
The combined approaches between ex situ and in situ conservation are of great importance for threatened species in urgent need of protection. This study aims to develop concrete actions to preserve the relic of 30 adult trees of the Sicilian fir (Abies nebrodensis) from extinction using long-term germplasm conservation in liquid nitrogen (LN, -196 °C). Pollen grains were collected, and their moisture content (MC) was measured. Then, viability (2,3,5-tryphenyl tetrazolium chloride, TTC), in vitro germinability, and enzymatic antioxidant activity (ascorbate peroxidase, APX; catalase, CAT) were evaluated before and after cryopreservation. Seeds collected from mature cones underwent X-ray analysis, and only full seeds were used to excise the zygotic embryos (ZEs) for cryopreservation. The MC percentage of ZEs was determined, and then they were plunged in LN with (+PVS2) or without (-PVS2) Plant Vitrification Solution 2; untreated ZEs were used as a control. Viability (TTC test) and in vitro germination were assessed for all ZEs (+PVS2, -PVS2, and control). Embryogenic callus (EC) lines obtained from mature ZEs were cryopreserved applying the 'encapsulation-dehydration' technique. This study has allowed, after optimizing cryopreservation protocols for pollen, ZEs, and EC of A. nebrodensis, to establish the first cryobank of this endangered species in Polizzi Generosa (Palermo, Italy), inside the 'Madonie Regional Park'. The strategy developed for Sicilian fir conservation will pave the way for similar initiatives for other critically endangered conifer species.
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Affiliation(s)
- Carla Benelli
- Institute for BioEconomy (IBE), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy; (C.B.); (T.İ.); (M.A.); (C.F.); (M.L.)
| | - Waed Tarraf
- Institute for BioEconomy (IBE), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy; (C.B.); (T.İ.); (M.A.); (C.F.); (M.L.)
| | - Tolga İzgü
- Institute for BioEconomy (IBE), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy; (C.B.); (T.İ.); (M.A.); (C.F.); (M.L.)
| | - Monica Anichini
- Institute for BioEconomy (IBE), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy; (C.B.); (T.İ.); (M.A.); (C.F.); (M.L.)
| | - Cecilia Faraloni
- Institute for BioEconomy (IBE), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy; (C.B.); (T.İ.); (M.A.); (C.F.); (M.L.)
| | - Maria Cristina Salvatici
- Institute of Chemistry of Organometallic Compounds (ICCOM)-Electron Microscopy Centre (Ce.M.E.), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy;
| | - Nourhene Jouini
- Department of Agricultural, Food and Forestry Sciences, University of Palermo, 90128 Palermo, Italy; (N.J.); (M.A.G.)
| | - Maria Antonietta Germanà
- Department of Agricultural, Food and Forestry Sciences, University of Palermo, 90128 Palermo, Italy; (N.J.); (M.A.G.)
| | - Roberto Danti
- Institute for Sustainable Plant Protection (IPSP), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy;
| | - Maurizio Lambardi
- Institute for BioEconomy (IBE), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy; (C.B.); (T.İ.); (M.A.); (C.F.); (M.L.)
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Ballesteros D, Martínez MT, Sánchez-Romero C, Montalbán IA, Sales E, Moncaleán P, Arrillaga I, Corredoira E. Current status of the cryopreservation of embryogenic material of woody species. FRONTIERS IN PLANT SCIENCE 2024; 14:1337152. [PMID: 38298606 PMCID: PMC10828030 DOI: 10.3389/fpls.2023.1337152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 12/28/2023] [Indexed: 02/02/2024]
Abstract
Cryopreservation, or the storage at liquid nitrogen temperatures (-196°C), of embryogenic cells or somatic embryos allows their long-term conservation without loss of their embryogenic capacity. During the last decade, protocols for cryopreservation of embryogenic material of woody species have been increasing in number and importance. However, despite the large experimental evidence proved in thousands of embryogenic lines, the application for the large-scale conservation of embryogenic material in cryobanks is still limited. Cryopreservation facilitates the management of embryogenic lines, reducing costs and time spent on their maintenance, thus limiting the risk of the appearance of somaclonal variation or contamination. Somatic embryogenesis in combination with cryopreservation is especially useful to preserve the juvenility of lines while the corresponding clones are being field-tested. Hence, when tree performance has been evaluated, selected varieties can be propagated from the cryostock. The traditional method of slow cooling or techniques based on vitrification are mostly applied procedures. For example, slow cooling methods are widely applied to conserve embryogenic lines of conifers. Desiccation based procedures, although simpler, have been applied in a smaller number of species. Genetic stability of the cryopreserved material is supported by multiloci PCR-derived markers in most of the assayed species, whereas DNA methylation status assays showed that cryopreservation might induce some changes that were also observed after prolonged subculture of the embryogenic lines. This article reviews the cryopreservation of embryogenic cultures in conifers, fruit species, deciduous forest species and palms, including a description of the different cryopreservation procedures and the analysis of their genetic stability after storage in liquid nitrogen.
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Affiliation(s)
- Daniel Ballesteros
- Departamento de Botánica y Geología, Facultad de Farmacia, Universitat de València, Burjassot, Valencia, Spain
- Royal Botanic Gardens, Kew, Wakehurst Place, Haywards Heath, United Kingdom
| | - María Teresa Martínez
- Misión Biológica de Galicia (MBG-CSIC), Sede Santiago de Compostela, Santiago de Compostela, Spain
| | | | | | - Ester Sales
- Dpto. Ciencias Agrarias y del Medio natural, Instituto Universitario de Investigación en Ciencias Ambientales (IUCA), Universidad de Zaragoza, Escuela Politécnica Superior, Huesca, Spain
| | | | - Isabel Arrillaga
- Institut Biotec/Med, Dpto Biología Vegetal, Facultad de Farmacia, Universitat de València, Burjassot, Valencia, Spain
| | - Elena Corredoira
- Misión Biológica de Galicia (MBG-CSIC), Sede Santiago de Compostela, Santiago de Compostela, Spain
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Loyola-Vargas VM, Ochoa-Alejo N. An Introduction to Plant Cell, Tissue, and Organ Culture: Current Status and Perspectives. Methods Mol Biol 2024; 2827:1-13. [PMID: 38985259 DOI: 10.1007/978-1-0716-3954-2_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Plant cell, tissue, and organ cultures (PCTOC) have been used as experimental systems in basic research, allowing gene function demonstration through gene overexpression or repression and investigating the processes involved in embryogenesis and organogenesis or those related to the potential production of secondary metabolites, among others. On the other hand, PCTOC has also been applied at the commercial level for the vegetative multiplication (micropropagation) of diverse plant species, mainly ornamentals but also horticultural crops such as potato or fruit and tree species, and to produce high-quality disease-free plants. Moreover, PCTOC protocols are important auxiliary systems in crop breeding crops to generate pure lines (homozygous) to produce hybrids for the obtention of polyploid plants with higher yields or better performance. PCTOC has been utilized to preserve and conserve the germplasm of different crops or threatened species. Plant genetic improvement through genetic engineering and genome editing has been only possible thanks to the establishment of efficient in vitro plant regeneration protocols. Different companies currently focus on commercializing plant secondary metabolites with interesting biological activities using in vitro PCTOC. The impact of omics on PCTOC is discussed.
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Affiliation(s)
- Víctor M Loyola-Vargas
- Unidad de Biología Integrativa, Centro de Investigación Científica de Yucatán, Mérida, Yucatán, Mexico.
| | - Neftalí Ochoa-Alejo
- Departamento de Ingeniería Genética, Unidad Irapuato, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, Mexico.
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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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Vujović T, Anđelić T, Vasilijević B, Jevremović D, Engelmann F. Cryopreservation of Indigenous Plums and Monitoring of Multiplication and Rooting Capacity of Shoots Obtained from Cryopreserved Specimens. PLANTS (BASEL, SWITZERLAND) 2023; 12:3108. [PMID: 37687355 PMCID: PMC10490254 DOI: 10.3390/plants12173108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
The objective of this study is to assess the suitability of vitrification cryo-plate (V cryo-plate) and dehydration cryo-plate (D cryo-plate) methods for the long-term conservation of eight autochthonous Prunus domestica L. genotypes originating from the Balkan Peninsula region. In vitro shoot tips were briefly pre-cultured for 1 day at 23 °C in the dark on a medium containing 0.3 M sucrose and then embedded in calcium alginate gel within the wells of the aluminum cryo-plates. In the V cryo-plate protocol, dehydration was carried out at room temperature using the following vitrification solutions: original plant vitrification solution 2 (PVS2) and 90% PVS2 solution (for 20 and 40 min) and plant vitrification solution 3 (PVS3) (for 60 and 80 min). In the D cryo-plate protocol, desiccation was performed for 2, 2.5, or 3 h over silica gel at 23 °C. The effect of different treatments was evaluated by monitoring the regrowth of both non-frozen and cryo-preserved explants. After cryo-preservation, five genotypes achieved regrowth rates over 40% in at least one of the applied protocols, while two genotypes showed regrowth rates of around 10%. A significant improvement in regrowth success for all genotypes using both cryo-plate methods was achieved by pre-culturing shoot tips for 7 days on a medium containing 0.5 M sucrose in complete darkness at 4 °C. Shoots regenerated from cryo-preserved explants were further monitored in vitro. By the third subculture, they had not only regained but had even exceeded the multiplication capacity (index of multiplication, length of axial, and lateral shoots) of shoots regenerated from dissection controls. Following multiplication, the cryo-preserved shoots were successfully rooted and rooting ability was assessed by monitoring the percentage of rooting, number and length of roots, and height of rooted plantlets.
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Affiliation(s)
- Tatjana Vujović
- Fruit Research Institute, Kralja Petra I No. 9, 32000 Čačak, Serbia; (T.A.); (B.V.); (D.J.)
| | - Tatjana Anđelić
- Fruit Research Institute, Kralja Petra I No. 9, 32000 Čačak, Serbia; (T.A.); (B.V.); (D.J.)
| | - Bojana Vasilijević
- Fruit Research Institute, Kralja Petra I No. 9, 32000 Čačak, Serbia; (T.A.); (B.V.); (D.J.)
| | - Darko Jevremović
- Fruit Research Institute, Kralja Petra I No. 9, 32000 Čačak, Serbia; (T.A.); (B.V.); (D.J.)
| | - Florent Engelmann
- Institute of Research for Development, 911 Av. Agropolis, P.O. Box 64501, CEDEX 5, 34394 Montpellier, France;
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Adero M, Tripathi JN, Tripathi L. Advances in Somatic Embryogenesis of Banana. Int J Mol Sci 2023; 24:10999. [PMID: 37446177 DOI: 10.3390/ijms241310999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/19/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
The cultivation of bananas and plantains (Musa spp.) holds significant global economic importance, but faces numerous challenges, which may include diverse abiotic and biotic factors such as drought and various diseases caused by fungi, viruses, and bacteria. The genetic and asexual nature of cultivated banana cultivars makes them unattractive for improvement via traditional breeding. To overcome these constraints, modern biotechnological approaches like genetic modification and genome editing have become essential for banana improvement. However, these techniques rely on somatic embryogenesis, which has only been successfully achieved in a limited number of banana cultivars. Therefore, developing new strategies for improving somatic embryogenesis in banana is crucial. This review article focuses on advancements in banana somatic embryogenesis, highlighting the progress, the various stages of regeneration, cryopreservation techniques, and the molecular mechanisms underlying the process. Furthermore, this article discusses the factors that could influence somatic embryogenesis and explores the prospects for improving the process, especially in recalcitrant banana cultivars. By addressing these challenges and exploring potential solutions, researchers aim to unlock the full potential of somatic embryogenesis as a tool for banana improvement, ultimately benefiting the global banana industry.
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Affiliation(s)
- Mark Adero
- International Institute of Tropical Agriculture (IITA), Nairobi 30709-00100, Kenya
| | | | - Leena Tripathi
- International Institute of Tropical Agriculture (IITA), Nairobi 30709-00100, Kenya
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Mohammadi MA, Wai MH, Rizwan HM, Qarluq AQ, Xu M, Wang L, Cheng Y, Aslam M, Zheng P, Wang X, Zhang W, Qin Y. Advances in micropropagation, somatic embryogenesis, somatic hybridizations, genetic transformation and cryopreservation for Passiflora improvement. PLANT METHODS 2023; 19:50. [PMID: 37231431 DOI: 10.1186/s13007-023-01030-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
Passion fruit is an essential commercial plant in the tropics and subtropics, which has lately seen a rise in demand for high-quality fruits and large-scale production. Generally, different species of passion fruit (Passiflora sp.) are propagated by sexual reproduction. However, asexual reproduction, such as stem cuttings, grafting, or tissue culture, is also available and advantageous in many instances. Recent research on passion fruit has concentrated on improving and establishing methodologies for embryogenesis, clonal proliferation via (somatic embryos), homozygote regeneration (by anther culture), germplasm preservation (via cryopreservation), and genetic transformation. These developments have resulted in potentially new directions for asexual propagation. Even though effective embryo culture and cryogenics are now available, however the limited frequency of embryogenic callus transformation to ex-vitro seedlings still restricts the substantial clonal replication of passion fruit. Here, in this review the advancement related to biotechnological approaches and the current understanding of Passiflora tissue culture. In vitro culture, organogenesis, cryopreservation, breeding, and productivity of Passiflora will significantly improve with novel propagation approaches, which could be applied to a wider range of germplasm.
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Affiliation(s)
- Mohammad Aqa Mohammadi
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Lab of Sugarcane Biology, College of Agriculture, Guangxi University, Nanning, 530004, China
- Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Alberoni University, Kapisa, 1254, Afghanistan
| | - Myat Hnin Wai
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | | | | | - Mengjie Xu
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lulu Wang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yan Cheng
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Mohammad Aslam
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ping Zheng
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xiaomei Wang
- Institute of Horticultural Research, Nanning Investigation Station of South Subtropical Fruit Trees, Guangxi Academy of Agricultural Sciences, Ministry of Agriculture, Nanning, 530007, China
| | - Wenbin Zhang
- Xinluo Breeding Center for Excellent Germplasms, Longyan, 361000, China
| | - Yuan Qin
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Horticulture, College of Life Sciences, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Lab of Sugarcane Biology, College of Agriculture, Guangxi University, Nanning, 530004, China.
- Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Genetic Stability Assessment of Six Cryopreserved Strawberry ( Fragaria × ananassa Duch.) Accessions by Phenotypic and Molecular Studies. BIOLOGY 2022; 11:biology11121746. [PMID: 36552255 PMCID: PMC9775118 DOI: 10.3390/biology11121746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022]
Abstract
For the long-term preservation of genetic resources, cryopreservation techniques have been developed for strawberry germplasm, mainly using in vitro-grown shoot tips. In this study, genetic stability was tested under greenhouse conditions for six strawberry accessions (IT232511, PHS0132, IT245810, IT245830, IT245852, and IT245860) derived from the following procedures: (1) conventional propagation (GH: greenhouse maintained); (2) in vitro propagation (TC: tissue culture); (3) pretreatment before cryopreservation (-LN: non-liquid nitrogen exposure); and (4) cryopreservation (+LN: liquid nitrogen exposure). To test the performance of phenotypic traits, we measured six vegetative and five fruit traits. There were no distinct differences in most of the characteristics, but a few traits, such as sugar content and pH of fruits in three accessions, showed higher values in +LN compared to GH. However, the differences disappeared in the first runner generation. To test genetic variations, a total of 102 bands were generated by twelve inter simple sequence repeat (ISSR) primers. A few polymorphic bands were found only in plants derived from TC of IT245860, which was not cryopreserved. The sequencing analysis of four polymorphic bands produced by ISSR_15 showed that none of these sequences matched the characterized genes in NCBI. Phenotypic abnormality was not observed across all plants. This study indicates that cryopreserved plants of the six strawberry accessions are phenotypically and genetically stable. Therefore, the results of this study can help to implement cryobanking of strawberry germplasm.
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