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Ren R, Ji Z, Guo J, Yang X. Cryopreservation of herbaceous Asteraceae seeds: Effects of seed reserves on seed germination and seedling regrowth. Cryobiology 2023; 112:104562. [PMID: 37494976 DOI: 10.1016/j.cryobiol.2023.104562] [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] [Received: 04/19/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 07/28/2023]
Abstract
Carbohydrate, lipid and protein, the three main storage reserves of seeds, are the main sources of raw materials and energy for seed germination and early growth stage of seedlings. In this study, the seed of 16 Asteraceae herbaceous ornamentals were used to compare the changes in seed germination, seedling growth indexes and four major storage reserves of seeds before and after cryopreservation. After cryopreservation, seed germination and seedling growth were preserved in most species (11/16), while one species showed significantly improved post-thaw germination and four had decreased germination. In seeds with preserved germination, no clear variation was noted with regards to the four kinds of storage reserves, or only a slight change in one. However, significantly reduced soluble protein, soluble sugar and fat content and increased starch content were detected in seeds showing reduced germination after cryopreservation. The correlation study further showed that the changes in seed germination were positively correlated with soluble protein, soluble sugar and fat, and negatively correlated with starch. In seedling growth indexes, only cotyledon area was correlated to the content of soluble protein, starch, fat, and seed germination after cryopreservation. These results support the use of soluble protein, soluble sugar, starch and fat as indicators of seed germination after cryopreservation, but not for predicting the seedling growth indexes.
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Affiliation(s)
- Ruifen Ren
- College of Forestry, Shanxi Agricultural University, Taigu, 030801, China.
| | - Zhe Ji
- College of Forestry, Shanxi Agricultural University, Taigu, 030801, China.
| | - Jiayi Guo
- College of Forestry, Shanxi Agricultural University, Taigu, 030801, China.
| | - Xiuyun Yang
- College of Forestry, Shanxi Agricultural University, Taigu, 030801, China.
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2
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Popova E, Kulichenko I, Kim HH. Critical Role of Regrowth Conditions in Post-Cryopreservation of In Vitro Plant Germplasm. BIOLOGY 2023; 12:biology12040542. [PMID: 37106743 PMCID: PMC10135868 DOI: 10.3390/biology12040542] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/26/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023]
Abstract
Cryopreservation is an effective option for the long-term conservation of plant genetic resources, including vegetatively propagated crops and ornamental plants, elite tree genotypes, threatened plant species with non-orthodox seeds or limited seed availability, as well as cell and root cultures useful for biotechnology. With increasing success, an arsenal of cryopreservation methods has been developed and applied to many species and material types. However, severe damage to plant material accumulating during the multi-step cryopreservation procedure often causes reduced survival and low regrowth, even when the optimized protocol is applied. The conditions at the recovery stage play a vital role in supporting material regrowth after cryopreservation and, when optimized, may shift the life-and-death balance toward a positive outcome. In this contribution, we provide an overview of the five main strategies available at the recovery stage to improve post-cryopreservation survival of in vitro plant materials and their further proliferation and development. In particular, we discuss the modification of the recovery medium composition (iron- and ammonium-free), exogenous additives to cope with oxidative stress and absorb toxic chemicals, and the modulation of medium osmotic potential. Special attention is paid to plant growth regulators used at various steps of the recovery process to induce the desired morphological response in cryopreserved tissues. Given studies on electron transport and energy provision in rewarmed materials, we discuss the effects of light-and-dark conditions and light quality. We hope that this summary provides a helpful guideline and a set of references for choosing the recovery conditions for plant species that have not been cryopreserved. We also propose that step-wise recovery may be most effective for materials sensitive to cryopreservation-induced osmotic and chemical stresses.
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Affiliation(s)
- Elena Popova
- K.A. Timiryazev Institute of Plant Physiology of Russian Academy of Sciences, Botanicheskaya 35, Moscow 127276, Russia
| | - Irina Kulichenko
- K.A. Timiryazev Institute of Plant Physiology of Russian Academy of Sciences, Botanicheskaya 35, Moscow 127276, Russia
| | - Haeng-Hoon Kim
- Department of Agricultural Life Science, Sunchon National University, Suncheon 57922, Republic of Korea
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3
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Zamecnik J, Faltus M, Bilavcik A. Vitrification Solutions for Plant Cryopreservation: Modification and Properties. PLANTS (BASEL, SWITZERLAND) 2021; 10:2623. [PMID: 34961099 PMCID: PMC8707230 DOI: 10.3390/plants10122623] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 05/04/2023]
Abstract
Many plants cannot vitrify themselves because they lack glassy state-inducing substances and/or have high water content. Therefore, cryoprotectants are used to induce vitrification. A cryoprotectant must have at least the following primary abilities: high glass-forming property, dehydration strength on a colligative basis to dehydrate plant cells to induce the vitrification state, and must not be toxic for plants. This review introduces the compounds used for vitrification solutions (VSs), their properties indicating a modification of different plant vitrification solutions, their modifications in the compounds, and/or their concentration. An experimental comparison is listed based on the survival or regeneration rate of one particular species after using more than three different VSs or their modifications. A brief overview of various cryopreservation methods using the Plant Vitrification Solution (PVS) is also included. This review can help in alert researchers to newly introduced PVSs for plant vitrification cryoprotocols, their properties, and the choice of their modifications in the compounds and/or their concentration.
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Affiliation(s)
- Jiri Zamecnik
- Crop Research Institute, Drnovska 507, 16106 Prague, Czech Republic; (M.F.); (A.B.)
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O’Brien C, Hiti-Bandaralage J, Folgado R, Hayward A, Lahmeyer S, Folsom J, Mitter N. Cryopreservation of Woody Crops: The Avocado Case. PLANTS (BASEL, SWITZERLAND) 2021; 10:934. [PMID: 34067138 PMCID: PMC8151510 DOI: 10.3390/plants10050934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/29/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
Recent development and implementation of crop cryopreservation protocols has increased the capacity to maintain recalcitrant seeded germplasm collections via cryopreserved in vitro material. To preserve the greatest possible plant genetic resources globally for future food security and breeding programs, it is essential to integrate in situ and ex situ conservation methods into a cohesive conservation plan. In vitro storage using tissue culture and cryopreservation techniques offers promising complementary tools that can be used to promote this approach. These techniques can be employed for crops difficult or impossible to maintain in seed banks for long-term conservation. This includes woody perennial plants, recalcitrant seed crops or crops with no seeds at all and vegetatively or clonally propagated crops where seeds are not true-to-type. Many of the world's most important crops for food, nutrition and livelihoods, are vegetatively propagated or have recalcitrant seeds. This review will look at ex situ conservation, namely field repositories and in vitro storage for some of these economically important crops, focusing on conservation strategies for avocado. To date, cultivar-specific multiplication protocols have been established for maintaining multiple avocado cultivars in tissue culture. Cryopreservation of avocado somatic embryos and somatic embryogenesis have been successful. In addition, a shoot-tip cryopreservation protocol has been developed for cryo-storage and regeneration of true-to-type clonal avocado plants.
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Affiliation(s)
- Chris O’Brien
- Centre for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia; (J.H.-B.); (A.H.); (N.M.)
| | - Jayeni Hiti-Bandaralage
- Centre for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia; (J.H.-B.); (A.H.); (N.M.)
| | - Raquel Folgado
- The Huntington Library, Art Museum, and Botanical Gardens, 1151 Oxford Road, San Marino, CA 91108, USA; (R.F.); (S.L.); (J.F.)
| | - Alice Hayward
- Centre for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia; (J.H.-B.); (A.H.); (N.M.)
| | - Sean Lahmeyer
- The Huntington Library, Art Museum, and Botanical Gardens, 1151 Oxford Road, San Marino, CA 91108, USA; (R.F.); (S.L.); (J.F.)
| | - Jim Folsom
- The Huntington Library, Art Museum, and Botanical Gardens, 1151 Oxford Road, San Marino, CA 91108, USA; (R.F.); (S.L.); (J.F.)
| | - Neena Mitter
- Centre for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia; (J.H.-B.); (A.H.); (N.M.)
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Alansi S, Al-Qurainy F, Nadeem M, Khan S, Tarroum M, Alshameri A, Gaafar ARZ. Cryopreservation: A tool to conserve date palm in Saudi Arabia. Saudi J Biol Sci 2019; 26:1896-1902. [PMID: 31762672 PMCID: PMC6864369 DOI: 10.1016/j.sjbs.2019.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/07/2019] [Accepted: 02/12/2019] [Indexed: 12/02/2022] Open
Abstract
The cryostoring of embryogenic tissue of the date palm (Phoenix dactylifera L. cv. Sagai) was examined through dehydrated-encapsulation, vitrification, and vitrification-encapsulation. The most extreme regeneration rate (53.33%) of epitomized, cryostored liquid nitrogen (+LN) treated embryos was observed when pre-embryonic masses were hatched with 0.5 M sucrose for 48 h pursued by 6 h air drying out. The most noteworthy survival rate (80.0%) of epitomized, cryopreserved embryonic cluster came about when calli were hatched with 0.3 or 0.7 M sucrose for 48 h pursued by four hours of lack of hydration, or with 0.5 M sucrose for 48 h without air drying out or with 2 h of air drying out. Following cryopreservation utilizing the embodiment vitrification convention, the most astounding survival (86.7%) as well as the greatest growth (46.7%) was accomplished when the typified vitrified, cryopreserved calli were treated with Vitrification Solution 2 for plants (PVS2) for 60 min at 25 °C. Cryopreservation utilizing the vitrification convention brought about the most extreme recuperation of 53.3%, when vitrified-cryopreserved calli were subjected to PVS2 solution for 30 min at 25 °C. Most extreme (40%) regeneration of vitrified, cryopreserved embryonic calli was seen when these calli were treated with PVS2 solution for 60 min at 25 °C. The outcome got amid this investigation of regrowth after cryopreservation of the cv. Sagai was over the base suitable for a cryo-germplasm bank. Recovery and regrowth were above 30% for all the techniques developed for the cv. Sagai.
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Affiliation(s)
- Saleh Alansi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Fahad Al-Qurainy
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammad Nadeem
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Salim Khan
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed Tarroum
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Aref Alshameri
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdel-Rhman Z Gaafar
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Köpnick C, Grübe M, Stock J, Senula A, Mock HP, Nagel M. Changes of soluble sugars and ATP content during DMSO droplet freezing and PVS3 droplet vitrification of potato shoot tips. Cryobiology 2018; 85:79-86. [PMID: 30257179 DOI: 10.1016/j.cryobiol.2018.09.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/05/2018] [Accepted: 09/19/2018] [Indexed: 12/13/2022]
Abstract
The potato's great genetic diversity needs to be maintained for future agricultural applications and can be preserved at ultra-low temperatures. To decipher detailed physiological processes, the aim of the study was to analyze the regrowth in 28 gene bank accessions and to reveal metabolite changes in a subset of four accessions that showed pronounced differences after shoot tip cryopreservation using DMSO droplet freezing and PVS3 droplet vitrification. Regrowth varied in all 28 genotypes ranging from 5% ('Kagiri') to 100% ('Karakter') and was higher after PVS3 droplet vitrification (71 ± 19%) than after cryopreservation using DMSO (54 ± 17%). Sucrose, glucose, and fructose were analyzed and showed significant increases after pre-culture in combination with PVS3 or DMSO and liquid nitrogen treatment and were reduced during regeneration. In contrast, adenosine triphosphate (ATP) reached its minimum concentration after cryoprotection and liquid nitrogen treatment and recovered most quickly after PVS3 droplet vitrification. A shortening of the explant pre-culture period reduced dramatically the regrowth after PVS3 vitrification. However, correlations between the shoot tip regrowth and sugar concentration were absent and significant at a low extent with ATP (r = 0.4, P < 0.01). Interestingly, several sub-cultivations of the donor plants from the previous stock affected negatively the regrowth. In conclusion, the cryopreservation protocol, genotypes, pre-culture period and number of sub-cultures affect the regrowth ability of explants, which was best estimated by the ATP concentration after low-temperature treatment. Due to the superior performance of PVS3, the routine potato cryopreservation at the Gatersleben gene bank was changed to PVS3 droplet vitrification.
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Affiliation(s)
- Claudia Köpnick
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK Gatersleben), Corrensstraße 3, 06466, Seeland, Germany
| | - Marion Grübe
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK Gatersleben), Corrensstraße 3, 06466, Seeland, Germany
| | - Johanna Stock
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK Gatersleben), Corrensstraße 3, 06466, Seeland, Germany
| | - Angelika Senula
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK Gatersleben), Corrensstraße 3, 06466, Seeland, Germany
| | - Hans-Peter Mock
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK Gatersleben), Corrensstraße 3, 06466, Seeland, Germany
| | - Manuela Nagel
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK Gatersleben), Corrensstraße 3, 06466, Seeland, Germany.
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7
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Assessment of Recovery Medium for Production of hCTLA4Ig after Cryopreservation in Transgenic Rice Cells. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-017-0477-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Funnekotter B, Colville L, Kaczmarczyk A, Turner SR, Bunn E, Mancera RL. Monitoring of oxidative status in three native Australian species during cold acclimation and cryopreservation. PLANT CELL REPORTS 2017; 36:1903-1916. [PMID: 28900717 DOI: 10.1007/s00299-017-2204-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
Three wild species exhibited a significant reduction in antioxidants throughout the cryopreservation protocol, whilst the half-cell reduction potential became more oxidised. Antioxidant content recuperated in recovering shoot tips. Cryopreservation is the most efficient and cost-effective long-term storage solution for the conservation of a wide range of plant species and material. Changes in the levels of antioxidants during the process of cryopreservation are known to reduce post-cryogenic survival due to oxidative stress. Low-molecular-weight thiols (cysteine, γ-glutamylcysteine, and glutathione) and ascorbic acid, which represent the two major water-soluble antioxidants in plants, were analysed at specific stages during cryopreservation of shoot tip material of three native Australian plant species [Anigozanthos viridis (Haemodoraceae), Lomandra sonderi (Asparagaceae), and Loxocarya cinerea (Restionaceae)] to quantify the oxidative stress experienced during cryopreservation. Post-cryogenic regeneration of shoot tips was greatest in A. viridis (78%) followed by L. sonderi (50%), whilst L. cinerea did not show any post-cryogenic regeneration. The application of a 3-week cold (5 °C) preconditioning regime, commonly used to increase post-cryogenic survival, resulted in significantly lower post-cryogenic regeneration for A. viridis (33%), but had little effect on the other two species. Total antioxidant concentration in shoot material decreased significantly with each step throughout the cryopreservation process, particularly in the cryoprotection and washing stages. Antioxidant levels in shoot tips then increased during the subsequent 7-day post-cryopreservation recovery period, with the greatest increase measured in A. viridis. Concentrations of thiols and their corresponding disulphides were used to calculate the corresponding half-cell reduction potentials, whereby the ability of these plant species to maintain a strong reducing environment in shoot tissues throughout the cryopreservation protocol was found to correlate with post-cryogenic survival.
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Affiliation(s)
- Bryn Funnekotter
- School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
- Botanic Gardens and Parks Authority, 1 Kattidj Close, Kings Park, WA, 6005, Australia
| | - Louise Colville
- Department of Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK
| | - Anja Kaczmarczyk
- Botanic Gardens and Parks Authority, 1 Kattidj Close, Kings Park, WA, 6005, Australia
| | - Shane R Turner
- Botanic Gardens and Parks Authority, 1 Kattidj Close, Kings Park, WA, 6005, Australia
- School of Biological Sciences, University of Western Australia, Crawley, WA, 6009, Australia
| | - Eric Bunn
- Botanic Gardens and Parks Authority, 1 Kattidj Close, Kings Park, WA, 6005, Australia
- School of Biological Sciences, University of Western Australia, Crawley, WA, 6009, Australia
| | - Ricardo L Mancera
- School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia.
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Li BQ, Feng CH, Wang MR, Hu LY, Volk G, Wang QC. Recovery patterns, histological observations and genetic integrity in Malus shoot tips cryopreserved using droplet-vitrification and encapsulation-dehydration procedures. J Biotechnol 2015; 214:182-91. [PMID: 26432336 DOI: 10.1016/j.jbiotec.2015.09.030] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 09/25/2015] [Indexed: 11/17/2022]
Abstract
A droplet-vitrification procedure is described for cryopreservation of Malus shoot tips. Survival patterns, recovery types, histological observations, and genetic integrity were compared for Malus shoot tips cryopreserved using this droplet-vitrification procedure and an encapsulation-dehydration procedure that was previously reported by us. In both procedures, three types of shoot tip recovery were observed following cryopreservation: callus formation without shoot regrowth, leaf formation without shoot regrowth, and shoot regrowth. Three categories of histological observations were also identified in cross-sections of shoot tips recovered after cryopreservation using the two cryogenic procedures. In category 1, almost all of the cells (94-95%) in the apical dome (AD) were damaged or killed and only some cells (30-32%) in the leaf primordia (LPs) survived. In category 2, only a few cells (18-20%) in the AD and some cells (30-31%) in the LPs survived. In category 3, majority of the cells (60-62%) in the AD and some cells (30-33%) in the LPs survived. These data suggest that shoot regrowth is correlated to the presence of a majority of surviving cells in the AD after liquid nitrogen exposure. No polymorphic bands were detected by inter-simple sequence repeats or by random amplified polymorphic DNA assessments, and ploidy levels analyzed by flow cytometry were unchanged when plants recovered after cryoexposure were compared to controls. The droplet-vitrification procedure appears to be robust since seven genotypes representing four Malus species and one hybrid recovered shoots following cryopreservation. Mean shoot regrowth levels of these seven genotypes were 48% in the droplet-vitrification method, which were lower than those (61%) in the encapsulation-dehydration procedure reported in our previous study, suggesting the latter may be preferred for routine cryobanking applications for Malus shoot tips.
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Affiliation(s)
- Bai-Quan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Chao-Hong Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Min-Rui Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Ling-Yun Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Gayle Volk
- USDA-ARS National Center for Genetic Resources Preservation, 1111 S. Mason St, Fort Collins, CO 80521, USA
| | - Qiao-Chun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
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Abeynayake SW, Byrne S, Nagy I, Jonavičienė K, Etzerodt TP, Boelt B, Asp T. Changes in Lolium perenne transcriptome during cold acclimation in two genotypes adapted to different climatic conditions. BMC PLANT BIOLOGY 2015; 15:250. [PMID: 26474965 PMCID: PMC4609083 DOI: 10.1186/s12870-015-0643-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 10/12/2015] [Indexed: 05/20/2023]
Abstract
BACKGROUND Activation of numerous protective mechanisms during cold acclimation is important for the acquisition of freezing tolerance in perennial ryegrass (Lolium perenne L.). To elucidate the molecular mechanisms of cold acclimation in two genotypes ('Veyo' and 'Falster') of perennial ryegrass from distinct geographical origins, we performed transcriptome profiling during cold acclimation using RNA-Seq. METHODS We cold-acclimated plants from both genotypes in controlled conditions for a period of 17 days and isolated Total RNA at various time points for high throughput sequencing using Illumina technology. RNA-seq reads were aligned to genotype specific references to identify transcripts with significant changes in expression during cold acclimation. RESULTS The genes induced were involved in protective mechanisms such as cell response to abiotic stimulus, signal transduction, redox homeostasis, plasma membrane and cell wall modifications, and carbohydrate metabolism in both genotypes. 'Falster' genotype, adapted to cold climates, showed a stronger transcriptional differentiation during cold acclimation, and more differentially expressed transcripts related to stress, signal transduction, response to abiotic stimulus, and metabolic processes compared to 'Veyo'. 'Falster' genotype also showed an induction of more transcripts with sequence homology to fructosyltransferase genes (FTs) and a higher fold induction of fructan in response to low-temperature stress. The circadian rhythm network was perturbed in the 'Veyo' genotype adapted to warmer climates. CONCLUSION In this study, the differentially expressed genes during cold acclimation, potentially involved in numerous protective mechanisms, were identified in two genotypes of perennial ryegrass from distinct geographical origins. The observation that the circadian rhythm network was perturbed in 'Veyo' during cold acclimation may point to a low adaptability of 'Veyo' to low temperature stresses. This study also revealed the transcriptional mechanisms underlying carbon allocation towards fructan biosynthesis in perennial ryegrass.
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Affiliation(s)
- Shamila Weerakoon Abeynayake
- Department of Agroecology - Crop Health, Aarhus University, Slagelse, Denmark.
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
| | - Stephen Byrne
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
| | - Istvan Nagy
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
| | - Kristina Jonavičienė
- Laboratory of Genetics and Physiology, Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Kėdainiai distr, Lithuania.
| | | | - Birte Boelt
- Department of Agroecology - Crop Health, Aarhus University, Slagelse, Denmark.
| | - Torben Asp
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
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Folgado R, Panis B, Sergeant K, Renaut J, Swennen R, Hausman JF. Unravelling the effect of sucrose and cold pretreatment on cryopreservation of potato through sugar analysis and proteomics. Cryobiology 2015; 71:432-41. [PMID: 26408853 DOI: 10.1016/j.cryobiol.2015.09.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 09/03/2015] [Accepted: 09/06/2015] [Indexed: 10/23/2022]
Abstract
Apical shoot tips were dissected from donor plants (cultured in several conditions) and cryopreserved using the droplet-vitrification technique. The effect of two preculture treatments (sucrose pretreatment medium or cold-culturing during two weeks) on donor plants of four potato species (Solanum commersonii, S. juzepcukii, S. ajanhuiri, and Solanum tuberosum) was studied. Post-cryopreservation meristem growth and plant recovery were influenced by the treatments, but the effect on the regeneration was strongly genotype-dependent. The highest post-rewarming plant recovery percentage was obtained using meristems dissected from donor plants of S. commersonii cultured on sucrose pretreatment medium or cold-cultured. Both preculture conditions also enhanced plant recovery in S. juzepcukii compared to control cultures. Cold preculture, however, proved to be undesirable for S. tuberosum whereas sucrose pretreatment had a positive impact on the plant regeneration of this species. The determination of changes in the concentration of soluble sugars revealed sugar accumulation, especially of sucrose and the raffinose family of oligosaccharides (RFOs), which can be linked to tolerance towards the cryopreservation. Additionally, a study of the proteome of the donor plantlets after the pretreatments by 2D-fluorescence difference gel electrophoresis (DIGE) was carried out to identify differentially abundant proteins. Carbon metabolism-related proteins, together with stress-response and oxidative-homeostasis related proteins were the main class of proteins that changed in abundance after the pretreatments. Our results suggest that oxidative homeostasis-related proteins and sugars may be associated with the improved tolerance to cryopreservation and the ability to cold acclimate by S. commersonii in contrast to the other genotypes. The increased accumulation of sucrose and RFOs play a fundamental role in the response to stress in potato and may help to acquire tolerance to cryopreservation.
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Affiliation(s)
- Raquel Folgado
- Environment Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, GD, Luxembourg; Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, KU Leuven, Willem de Croylaan 42 bus 2455, B - 3001 Leuven, Belgium; The Huntington Library, Art Collections and Botanical Gardens, 1151 Oxford Road, San Marino, CA 91108, USA.
| | - Bart Panis
- Bioversity International, Willem de Croylaan 42 bus 2455, B - 3001, Leuven, Belgium
| | - Kjell Sergeant
- Environment Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, GD, Luxembourg
| | - Jenny Renaut
- Environment Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, GD, Luxembourg
| | - Rony Swennen
- Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, KU Leuven, Willem de Croylaan 42 bus 2455, B - 3001 Leuven, Belgium; Bioversity International, Willem de Croylaan 42 bus 2455, B - 3001, Leuven, Belgium; International Institute of Tropical Agriculture, POB 10, Duluti, Arusha, Tanzania
| | - Jean-Francois Hausman
- Environment Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, GD, Luxembourg
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Niino T, Arizaga MV. Cryopreservation for preservation of potato genetic resources. BREEDING SCIENCE 2015; 65:41-52. [PMID: 25931979 PMCID: PMC4374563 DOI: 10.1270/jsbbs.65.41] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 10/22/2014] [Indexed: 05/13/2023]
Abstract
Cryopreservation is becoming a very important tool for the long-term storage of plant genetic resources and efficient cryopreservation protocols have been developed for a large number of plant species. Practical procedures, developed using in vitro tissue culture, can be a simple and reliable preservation option of potato genetic resources rather than maintaining by vegetative propagation in genebanks due their allogamous nature. Cryopreserved materials insure a long-term backup of field collections against loss of plant germplasm. Occurrence of genetic variation, in tissue culture cells during prolonged subcultures, can be avoided with suitable cryopreservation protocols that provide high regrowth, leading and facilitating a systematic and strategic cryo-banking of plant genetic resources. Cryopreservation protocols for potato reviewed here, can efficiently complement field and in vitro conservation, providing for preservation of genotypes difficult to preserve by other methods, wild types and other species decided as priority collections.
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Affiliation(s)
- Takao Niino
- Gene Research Center, University of Tsukuba,
Tsukuba, Ibaraki 305-8572,
Japan
| | - Miriam Valle Arizaga
- Gene Research Center, University of Tsukuba,
Tsukuba, Ibaraki 305-8572,
Japan
- Centro Nacional de Recursos Genéticos, INIFAP,
Tepatitlán de Morelos 47600,
México
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Wang B, Zhang Z, Yin Z, Feng C, Wang Q. Novel and potential application of cryopreservation to plant genetic transformation. Biotechnol Adv 2012; 30:604-12. [DOI: 10.1016/j.biotechadv.2011.10.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Revised: 10/09/2011] [Accepted: 10/25/2011] [Indexed: 12/15/2022]
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