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Le KC, Johnson S, Aidun CK, Egertsdotter U. In Vitro Propagation of the Blueberry 'Blue Suede™' ( Vaccinium hybrid) in Semi-Solid Medium and Temporary Immersion Bioreactors. Plants (Basel) 2023; 12:2752. [PMID: 37570906 PMCID: PMC10421453 DOI: 10.3390/plants12152752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 08/13/2023]
Abstract
The production of blueberries for fresh and processed consumption is increasing globally and has more than doubled in the last decade. Blueberry is grown commercially across a variety of climates in over 30 countries. The major classes of plants utilized for the planting and breeding of new cultivars are highbush, lowbush, half-high, Rabbiteye, and Southern highbush. Plants can be propagated by cuttings or in vitro micropropagation techniques. In vitro propagation offers advantages for faster generation of a large number of disease-free plants independent of season. Labor costs for in vitro propagation can be reduced using new cultivation technology and automation. Here, we test and demonstrate successful culture conditions and medium compositions for in vitro initiation, multiplication, and rooting of the Southern highbush cultivar 'Blue Suede™' (Vaccinium hybrid).
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Affiliation(s)
- Kim-Cuong Le
- G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 500 10th Street NW, Atlanta, GA 30332-0620, USA; (K.-C.L.); (S.J.); (C.K.A.)
| | - Shannon Johnson
- G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 500 10th Street NW, Atlanta, GA 30332-0620, USA; (K.-C.L.); (S.J.); (C.K.A.)
| | - Cyrus K. Aidun
- G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 500 10th Street NW, Atlanta, GA 30332-0620, USA; (K.-C.L.); (S.J.); (C.K.A.)
- Renewable Bioproducts Institute, Georgia Institute of Technology, 500 10th Street NW, Atlanta, GA 30332-0620, USA
| | - Ulrika Egertsdotter
- Renewable Bioproducts Institute, Georgia Institute of Technology, 500 10th Street NW, Atlanta, GA 30332-0620, USA
- Department of Forest Genetics and Plant Physiology, Umea Plant Science Center (UPSC), Swedish University of Agricultural Science (SLU), 901-83 Umea, Sweden
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Le KC, Jeong H, Tran TM. Theory of transition from brittle to ductile fracture. Phys Rev E 2023; 107:055006. [PMID: 37328972 DOI: 10.1103/physreve.107.055006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/05/2023] [Indexed: 06/18/2023]
Abstract
In this paper, two improvements to the theory of transition from brittle to ductile fracture developed by Langer [J. S. Langer, Phys. Rev. E 103, 063004 (2021)2470-004510.1103/PhysRevE.103.063004] are proposed. First, considering the drastic temperature rise near the crack tip, the temperature dependence of the shear modulus is included to better quantify the thermally sensitive dislocation entanglement. Second, the parameters of the improved theory are identified by the large-scale least-squares method. The comparison between the fracture toughness predicted by the theory and the values obtained in Gumbsch's experiments for tungsten at different temperatures [P. Gumbsch et al., Science 282, 1293 (1998)10.1126/science.282.5392.1293] shows good agreement.
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Affiliation(s)
- K C Le
- Division of Computational Mathematics and Engineering, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
- Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
| | - H Jeong
- Lehrstuhl für Mechanik - Materialtheorie, Ruhr-Universität Bochum, 44801 Bochum, Germany
| | - T M Tran
- Department of Mechanical Engineering, Vietnamese German University, Binh Duong 750000, Vietnam
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Le KC, Dedicova B, Johansson S, Lelu-Walter MA, Egertsdotter U. Temporary immersion bioreactor system for propagation by somatic embryogenesis of hybrid larch ( Larix × eurolepis Henry). Biotechnol Rep (Amst) 2021; 32:e00684. [PMID: 34754827 PMCID: PMC8556599 DOI: 10.1016/j.btre.2021.e00684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/22/2021] [Accepted: 10/15/2021] [Indexed: 11/30/2022]
Abstract
Somatic embryogenesis (SE) has high potential for large-scale clonal propagation of conifers. Different types of bioreactor cultures have been tested for the conifer SE process where the temporary immersion bioreactors (TIBs) have proved to be useful across the different developmental steps of the SE process. In the present study the use of TIBs was tested for hybrid larch (Larix × eurolepis Henry). The results showed two-fold increases in both fresh weight (FW) of pro-embryogenic masses (PEMs) and yield of cotyledonary embryos in the TIBs compared to solid medium in plates. For the germination phase, the highest number of roots per plant, the root length and height of plants were also obtained in the TIBs. The results show that the TIB system can be successfully used to support scale up of plant production in all steps of the SE process from proliferation to germination of hybrid larch (Larix × eurolepis Henry).
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Affiliation(s)
- Kim-Cuong Le
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center (UPSC), Swedish University of Agricultural Science (SLU), SE 901 83 Umeå, Sweden
| | - Beata Dedicova
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center (UPSC), Swedish University of Agricultural Science (SLU), SE 901 83 Umeå, Sweden
| | - Sofie Johansson
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center (UPSC), Swedish University of Agricultural Science (SLU), SE 901 83 Umeå, Sweden
| | - Marie-Anne Lelu-Walter
- INRAE, ONF, BioForA, 2163 avenue de la Pomme de Pin, CS 40001 - Ardon, F-45075 Orléans, France
| | - Ulrika Egertsdotter
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center (UPSC), Swedish University of Agricultural Science (SLU), SE 901 83 Umeå, Sweden
- G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 500 Tenth Street NW, 30332-0620 Atlanta, GA. USA
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Asadi-Aghbolaghi M, Dedicova B, Ranade SS, Le KC, Sharifzadeh F, Omidi M, Egertsdotter U. Protocol development for somatic embryogenesis, SSR markers and genetic modification of Stipagrostis pennata (Trin.) De Winter. Plant Methods 2021; 17:70. [PMID: 34193231 PMCID: PMC8247082 DOI: 10.1186/s13007-021-00768-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 06/12/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Stipagrostis pennata (Trin.) De Winter is an important species for fixing sand in shifting and semi-fixed sandy lands, for grazing, and potentially as a source of lignocellulose fibres for pulp and paper industry. The seeds have low viability, which limits uses for revegetation. Somatic embryogenesis offers an alternative method for obtaining large numbers of plants from limited seed sources. RESULTS A protocol for plant regeneration from somatic embryos of S. pennata was developed. Somatic embryogenesis was induced on Murashige & Skoog (MS) medium supplemented with 3 mg·L-1 2,4-D subsequently shoots were induced on MS medium and supplemented with 5 mg·L-1 zeatin riboside. The highest shoots induction was obtained when embryogenic callus derived from mature embryos (96%) in combination with MS filter-sterilized medium was used from Khuzestan location. The genetic stability of regenerated plants was analysed using ten simple sequence repeats (SSR) markers from S. pennata which showed no somaclonal variation in regenerated plants from somatic embryos of S. pennata. The regenerated plants of S. pennata showed genetic stability without any somaclonal variation for the four pairs of primers that gave the expected amplicon sizes. This data seems very reliable as three of the PCR products belonged to the coding region of the genome. Furthermore, stable expression of GUS was obtained after Agrobacterium-mediated transformation using a super binary vector carried by a bacterial strain LBA4404. CONCLUSION To our knowledge, the current work is the first attempt to develop an in vitro protocol for somatic embryogenesis including the SSR marker analyses of regenerated plants, and Agrobacterium-mediated transformation of S. pennata that can be used for its large-scale production for commercial purposes.
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Affiliation(s)
- Masoumeh Asadi-Aghbolaghi
- Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Tehran, 14174, Karaj, Iran
| | - Beata Dedicova
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden.
| | - Sonali Sachi Ranade
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Kim-Cuong Le
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Farzad Sharifzadeh
- Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Tehran, 14174, Karaj, Iran
| | - Mansoor Omidi
- Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Tehran, 14174, Karaj, Iran
| | - Ulrika Egertsdotter
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
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Abstract
The thermodynamic dislocation theory developed for nonuniform plastic deformations is used here to simulate the stress-strain curves for crystals subjected to antiplane shear-controlled load reversal. We show that the presence of the positive back stress during the load reversal reduces the magnitude of shear stress required to pull excess dislocations back to the center of the specimen. There, the excess dislocations of opposite signs meet and annihilate each other leading to the Bauschinger effect.
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Affiliation(s)
- K C Le
- Lehrstuhl für Mechanik-Materialtheorie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - T M Tran
- Lehrstuhl für Mechanik-Materialtheorie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
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Abstract
The statistical-thermodynamic dislocation theory developed in previous papers is used here in an analysis of high-temperature deformation of aluminum and steel. Using physics-based parameters that we expect theoretically to be independent of strain rate and temperature, we are able to fit experimental stress-strain curves for three different strain rates and three different temperatures for each of these two materials. Our theoretical curves include yielding transitions at zero strain in agreement with experiment. We find that thermal softening effects are important even at the lowest temperatures and smallest strain rates.
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Affiliation(s)
- K C Le
- Lehrstuhl für Mechanik-Materialtheorie, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - T M Tran
- Lehrstuhl für Mechanik-Materialtheorie, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - J S Langer
- Department of Physics, University of California, Santa Barbara, Santa Barbara, California 93106-9530, USA
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Le KC, Im WT, Paek KY, Park SY. Biotic elicitation of ginsenoside metabolism of mutant adventitious root culture in Panax ginseng. Appl Microbiol Biotechnol 2018; 102:1687-1697. [DOI: 10.1007/s00253-018-8751-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/12/2017] [Accepted: 12/27/2017] [Indexed: 01/30/2023]
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Abstract
Thermal nucleation of two-dimensional charges is studied. It is argued that the probability of N charge pairs to appear has a simple asymptotics for large N: p(N)=[q(c,beta,micro)](N)/Z(beta,micro), where q(c,beta,micro) is a function of charge concentration c, inverse temperature beta, and chemical potential micro, and Z(beta,micro) is the partition function. We present q(c,beta,micro) as a limit value of some functional integral and find an approximate value of this limit. This provides thermodynamic description of nucleation transition. The probability distribution of charge positions is studied within the same approximation. The behavior of the probability distribution indicates that for small charge concentration the transition is of Kosterlitz-Thouless type, i.e., the dipoles nucleated dissociate and form a neutral plasma, while at larger charge concentration the transition corresponds to nucleation of dipoles that may remain bounded. A transition with respect to chemical potential is observed, for micro<micro(cr) the charge nucleation is a transition of infinite order, while for micro>micro(cr) it becomes a first-order transition.
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