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Seldimirova OA, Kudoyarova GR, Kruglova NN, Galin IR, Veselov DS. Somatic Embryogenesis in Wheat and Barley Calli in vitro Is Determined by the Level of Indoleacetic and Abscisic Acids. Russ J Dev Biol 2019. [DOI: 10.1134/s1062360419030056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fraga HPDF, Vieira LDN, Puttkammer CC, Dos Santos HP, Garighan JDA, Guerra MP. Glutathione and abscisic acid supplementation influences somatic embryo maturation and hormone endogenous levels during somatic embryogenesis in Podocarpus lambertii Klotzsch ex Endl. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 253:98-106. [PMID: 27969001 DOI: 10.1016/j.plantsci.2016.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/22/2016] [Accepted: 09/24/2016] [Indexed: 05/08/2023]
Abstract
Here we propose a protocol for embryogenic cultures induction, proliferation and maturation for the Brazilian conifer Podocarpus lambertii, and investigated the effect of abscisic acid (ABA) and glutathione (GSH) supplementation on the maturation phase. ABA, zeatin (Z) and salicylic acid (SA) endogenous levels were quantified. Number of somatic embryos obtained in ABA-supplemented treatment was significant higher than in ABA-free treatment, showing the relevance of ABA supplementation during somatic embryos maturation. Histological analysis showed the stereotyped sequence of developmental stages in conifer somatic embryos, reaching the late torpedo-staged embryo. GSH supplementation in maturation culture medium improved the somatic embryos number and morphological features. GSH 0mM and GSH 0.1mM treatments correlated with a decreased ABA endogenous level during maturation, while GSH 0.5mM treatment showed constant levels. All treatments resulted in decreased Z endogenous levels, supporting the concept that cytokinins are important during the initial cell division but not for the later stages of embryo development. The lowest SA levels found in GSH 0.5mM treatment were coincident with early embryonic development, and this treatment resulted in the highest development of somatic embryos. Thus, a correlation between lower SA levels and improved somatic embryo formation can be hypothesized.
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Affiliation(s)
- Hugo Pacheco de Freitas Fraga
- Laboratório de Fisiologia do Desenvolvimento e Genética Vegetal, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, SC, 88034-001, Brazil
| | - Leila do Nascimento Vieira
- Laboratório de Fisiologia do Desenvolvimento e Genética Vegetal, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, SC, 88034-001, Brazil
| | - Catarina Corrêa Puttkammer
- Laboratório de Fisiologia do Desenvolvimento e Genética Vegetal, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, SC, 88034-001, Brazil
| | - Henrique Pessoa Dos Santos
- Laboratório de Fisiologia Vegetal, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Uva e Vinho, Bento Gonçalves, RS, 95700-000, Brazil
| | - Julio de Andrade Garighan
- Laboratório de Fisiologia Vegetal, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Uva e Vinho, Bento Gonçalves, RS, 95700-000, Brazil
| | - Miguel Pedro Guerra
- Laboratório de Fisiologia do Desenvolvimento e Genética Vegetal, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, SC, 88034-001, Brazil.
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Amini M, Deljou A, Nabiabad HS. Improvement of in vitro embryo maturation, plantlet regeneration and transformation efficiency from alfalfa ( Medicago sativa L.) somatic embryos using Cuscuta campestris extract. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2016; 22:321-330. [PMID: 27729718 PMCID: PMC5039162 DOI: 10.1007/s12298-016-0374-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 08/04/2016] [Accepted: 08/11/2016] [Indexed: 06/06/2023]
Abstract
Developmental deficiency of somatic embryos and regeneration to plantlets, especially in the case of transformation, are major problems of somatic embryo regeneration in alfalfa. One of the ways to overcome these problems is the use of natural plant regulators and nutrients in the culture medium of somatic embryos. For investigating the influence of Cuscuta campestris extract on the efficiency of plant regeneration and transformation, chimeric tissue type plasminogen activator was transferred to explants using Agrobacterium tumefaciens, and transgenic plants were recovered using medium supplemented with different concentration of the extract. Transgenic plants were analyzed by PCR and RT-PCR. Somatic embryos of Medicago sativa L. developed into plantlets at high frequency level (52 %) in the maturation medium supplemented with 50 mg 1-1C. campestris extract as compared to the medium without extract (26 %). Transformation efficiency was 29.3 and 15.2 % for medium supplemented with dodder extract and without the extract, respectively. HPLC and GC/MS analysis of the extract indicated high level of ABA and some compounds such as Phytol, which can affect the somatic embryo maturation. The antibacterial assay showed that the extract was effective against some strains of A. tumefaciens. These results have provided a scientific basis for using of C. campestris extract as a good natural source of antimicrobial agents and plant growth regulator as well, that can be used in tissue culture of transgenic plants.
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Affiliation(s)
- Massoume Amini
- Department of Biotechnology, College of Agriculture, Bu-Ali Sina University, Hamadan, Iran
| | - Ali Deljou
- Department of Biotechnology, College of Agriculture, Bu-Ali Sina University, Hamadan, Iran
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Wang W, Li H, Lin X, Yang S, Wang Z, Fang B. Transcriptome analysis identifies genes involved in adventitious branches formation of Gracilaria lichenoides in vitro. Sci Rep 2015; 5:17099. [PMID: 26657019 PMCID: PMC4675990 DOI: 10.1038/srep17099] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/26/2015] [Indexed: 11/23/2022] Open
Abstract
Tissue culture could solve the problems associated with Gracilaria cultivation, including the consistent supply of high-quality seed stock, strain improvement, and efficient mass culture of high-yielding commercial strains. However, STC lags behind that of higher plants because of the paucity of genomic information. Transcriptome analysis and the identification of potential unigenes involved in the formation and regeneration of callus or direct induction of ABs are essential. Herein, the CK, EWAB and NPA G. lichenoides transcriptomes were analyzed using the Illumina sequencing platform in first time. A total of 17,922,453,300 nucleotide clean bases were generated and assembled into 21,294 unigenes, providing a total gene space of 400,912,038 nucleotides with an average length of 1,883 and N 50 of 5,055 nucleotides and a G + C content of 52.02%. BLAST analysis resulted in the assignment of 13,724 (97.5%), 3,740 (26.6%), 9,934 (70.6%), 10,611 (75.4%), 9,490 (67.4%), and 7,773 (55.2%) unigenes were annotated to the NR, NT, Swiss-Prot, KEGG, COG, and GO databases, respectively, and the total of annotated unigenes was 14,070. A total of 17,099 transcripts were predicted to possess open reading frames, including 3,238 predicted and 13,861 blasted based on protein databases. In addition, 3,287 SSRs were detected in G.lichenoides, providing further support for genetic variation and marker-assisted selection in the future. Our results suggest that auxin polar transport, auxin signal transduction, crosstalk with other endogenous plant hormones and antioxidant systems, play important roles for ABs formation in G. lichenoides explants in vitro. The present findings will facilitate further studies on gene discovery and on the molecular mechanisms underlying the tissue culture of seaweed.
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Affiliation(s)
- Wenlei Wang
- College of Biochemistry and Engineering, Xiamen University, Xiamen 361005, China
| | - Huanqin Li
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China
| | - Xiangzhi Lin
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
| | - Shanjun Yang
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
| | - Zhaokai Wang
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
| | - Baishan Fang
- College of Biochemistry and Engineering, Xiamen University, Xiamen 361005, China
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Prado MJ, Largo A, Domínguez C, González MV, Rey M, Centeno ML. Determination of abscisic acid and its glucosyl ester in embryogenic callus cultures of Vitis vinifera in relation to the maturation of somatic embryos using a new liquid chromatography-ELISA analysis method. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:852-859. [PMID: 24877677 DOI: 10.1016/j.jplph.2014.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 01/22/2014] [Accepted: 01/23/2014] [Indexed: 05/28/2023]
Abstract
The levels of abscisic acid (ABA), its conjugate ABA-GE, and IAA were determined in embryogenic calli of Vitis vinifera L. (cv. Mencía) cultured in DM1 differentiation medium, to relate them to the maturation process of somatic embryos. To achieve this goal, we developed an analytical method that included two steps of solid-phase extraction, chromatographic separation by HPLC, ABA-GE hydrolysis, and sensitive ELISA quantification. Because the ABA immunoassay was based on new polyclonal antibodies raised against a C4'-ABA conjugate, the assay was characterized (detection limit, midrange, measure range, and cross-reaction) and validated by a comparison of the ABA data obtained with this ELISA procedure and with a physicochemical method (LC-ESI-MS/MS). Radioactive-labeled internal standards were initially added to callus extracts to correct the losses of plant hormones, and thus assure the accuracy of the measurements. The endogenous concentration of ABA in the embryogenic callus cultured in DM1 medium was doubled at the fifth week of culture, concurring with the maturation process of somatic embryos, as indicated by the accumulation of carbohydrates observed through histological analysis. The ABA-GE content was higher than ABA, decreasing at 21 days of culture in DM1 medium but increasing thereafter. The data suggest the involvement of the synthesis and conjugation of ABA in the final stages of development in grapevine somatic embryos from embryogenic callus. IAA levels were low, suggesting that auxin plays no significant role during the maturation of somatic embryos. In addition, the lower ABA levels in calli cultured in DM differentiation medium with PGRs, a medium presenting high precocious germination and deficiencies in somatic embryo development indicate that an increase in ABA content during the development of somatic embryos in grapevine is necessary for their correct maturation.
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Affiliation(s)
- María Jesús Prado
- Departamento de Biología Vegetal y Ciencia del Suelo, Universidad de Vigo, Campus Universitario, 36310 Vigo, Spain.
| | - Asier Largo
- Departamento de Ingeniería y Ciencias Agrarias, Facultad de Ciencias Biológicas y Ambientales, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain.
| | - Cristina Domínguez
- Departamento de Biología Vegetal y Ciencia del Suelo, Universidad de Vigo, Campus Universitario, 36310 Vigo, Spain.
| | - María Victoria González
- Departamento de Fisiología Vegetal, Universidad de Santiago de Compostela, Campus Sur, 15872 Santiago de Compostela, Spain.
| | - Manuel Rey
- Departamento de Biología Vegetal y Ciencia del Suelo, Universidad de Vigo, Campus Universitario, 36310 Vigo, Spain.
| | - María Luz Centeno
- Departamento de Ingeniería y Ciencias Agrarias, Facultad de Ciencias Biológicas y Ambientales, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain.
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Liu W, Liang Z, Wang X, Sibbald S, Hunter D, Tian L. Preservation and faithful expression of transgene via artificial seeds in alfalfa. PLoS One 2013; 8:e56699. [PMID: 23690914 PMCID: PMC3653898 DOI: 10.1371/journal.pone.0056699] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 01/14/2013] [Indexed: 11/25/2022] Open
Abstract
Proper preservation of transgenes and transgenic materials is important for wider use of transgenic technology in plants. Here, we report stable preservation and faithful expression of a transgene via artificial seed technology in alfalfa. DNA constructs containing the uid reporter gene coding for β-glucuronidase (GUS) driven by a 35S promoter or a tCUP promoter were introduced into alfalfa via Agrobacterium-mediated genetic transformation. Somatic embryos were subsequently induced from transgenic alfalfa plants via in vitro technology. These embryos were treated with abscisic acid to induce desiccation tolerance and were subjected to a water loss process. After the desiccation procedure, the water content in dried embryos, or called artificial seeds, was about 12–15% which was equivalent to that in true seeds. Upon water rehydration, the dried somatic embryos showed high degrees of viability and exhibited normal germination. Full plants were subsequently developed and recovered in a greenhouse. The progeny plants developed from artificial seeds showed GUS enzyme activity and the GUS expression level was comparable to that of plants developed from somatic embryos without the desiccation process. Polymerase chain reaction analysis indicated that the transgene was well retained in the plants and Southern blot analysis showed that the transgene was stably integrated in plant genome. The research showed that the transgene and the new trait can be well preserved in artificial seeds and the progeny developed. The research provides a new method for transgenic germplasm preservation in different plant species.
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Affiliation(s)
- Wenting Liu
- College of Life Sciences, Northwest A & F University, Shaanxi, China
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Zongsuo Liang
- College of Life Sciences, Northwest A & F University, Shaanxi, China
| | - Xinhua Wang
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Susan Sibbald
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - David Hunter
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada
| | - Lining Tian
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
- * E-mail:
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Sghaier-Hammami B, Drira N, Jorrín-Novo JV. Comparative 2-DE proteomic analysis of date palm (Phoenix dactylifera L.) somatic and zygotic embryos. J Proteomics 2009; 73:161-77. [DOI: 10.1016/j.jprot.2009.07.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 07/02/2009] [Accepted: 07/09/2009] [Indexed: 11/30/2022]
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