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Ying W, Wen G, Xu W, Liu H, Ding W, Zheng L, He Y, Yuan H, Yan D, Cui F, Huang J, Zheng B, Wang X. Agrobacterium rhizogenes: paving the road to research and breeding for woody plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1196561. [PMID: 38034586 PMCID: PMC10682722 DOI: 10.3389/fpls.2023.1196561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 10/20/2023] [Indexed: 12/02/2023]
Abstract
Woody plants play a vital role in global ecosystems and serve as valuable resources for various industries and human needs. While many woody plant genomes have been fully sequenced, gene function research and biotechnological breeding advances have lagged behind. As a result, only a limited number of genes have been elucidated, making it difficult to use newer tools such as CRISPR-Cas9 for biotechnological breeding purposes. The use of Agrobacterium rhizogenes as a transformative tool in plant biotechnology has received considerable attention in recent years, particularly in the research field on woody plants. Over the past three decades, numerous woody plants have been effectively transformed using A. rhizogenes-mediated techniques. Some of these transformed plants have successfully regenerated. Recent research on A. rhizogenes-mediated transformation of woody plants has demonstrated its potential for various applications, including gene function analysis, gene expression profiling, gene interaction studies, and gene regulation analysis. The introduction of the Ri plasmid has resulted in the emergence of several Ri phenotypes, such as compact plant types, which can be exploited for Ri breeding purposes. This review paper presents recent advances in A. rhizogenes-mediated basic research and Ri breeding in woody plants. This study highlights various aspects of A. rhizogenes-mediated transformation, its multiple applications in gene function analysis, and the potential of Ri lines as valuable breeding materials.
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Affiliation(s)
- Wei Ying
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Guangchao Wen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Wenyuan Xu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Haixia Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Wona Ding
- College of Science and Technology, Ningbo University, Ningbo, Zhejiang, China
| | - Luqing Zheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yi He
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Huwei Yuan
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Daoliang Yan
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Fuqiang Cui
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Jianqin Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Bingsong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Xiaofei Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang A&F University, Hangzhou, Zhejiang, China
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Yan H, Ma D, Yi P, Sun G, Chen X, Yi Y, Huang X. Highly efficient Agrobacterium rhizogenes-mediated transformation for functional analysis in woodland strawberry. PLANT METHODS 2023; 19:99. [PMID: 37742022 PMCID: PMC10517450 DOI: 10.1186/s13007-023-01078-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/08/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND The diploid woodland strawberry (Fragaria vesca) is an excellent model plant for investigating economically significant traits and several genetic resources within the Rosaceae family. Agrobacterium rhizogenes-mediated hairy root transformation is an alternative for exploring gene functions, especially the genes specifically expressed in roots. However, the hairy root transformation has not been established in strawberry. RESULTS Here, we described an efficient and rapid hairy root transgenic system for strawberry using A. rhizogenes. Strain of A. rhizogenes MSU440 or C58C1 was the most suitable for hairy root transformation. The transformation efficiency was highest when tissues contained hypocotyls as explants. The optimal procedure involves A. rhizogenes at an optical density (OD600) of 0.7 for 10 min and co-cultivation duration for four days, achieving a transgenic efficiency of up to 71.43%. An auxin responsive promoter DR5ver2 carrying an enhanced green fluorescent protein (eGFP) marker was transformed by A. rhizogenes MSU440, thereby generating transgenic hairy roots capable of high eGFP expression in root tip and meristem of strawberry where auxin accumulated. Finally, this system was applied for functional analysis using jGCaMP7c, which could sense calcium signals. A significant upsurge in eGFP expression in the transgenic hairy roots was displayed after adding calcium chloride. The results suggested that this approach was feasible for studying specific promoters and could be a tool to analyze gene functions in the roots of strawberries. CONCLUSION We established a rapid and efficient hairy root transformation in strawberry by optimizing parameters, which was adequate for promoter analysis and functional characterization of candidate genes in strawberry and other rosaceous plants.
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Affiliation(s)
- Huiqing Yan
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
| | - Dandan Ma
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Peipei Yi
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Guilian Sun
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Xingyan Chen
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
| | - Yin Yi
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Xiaolong Huang
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China.
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China.
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China.
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Hernández-Piedra G, Ruiz-Carrera V, Sánchez AJ, Azpeitia-Morales A, Calva-Calva G. Induction of Hairy Roots on Somatic Embryos of Rhizoclones from Typha domingensis Seedlings. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9121679. [PMID: 33271755 PMCID: PMC7760117 DOI: 10.3390/plants9121679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/18/2020] [Accepted: 11/24/2020] [Indexed: 05/29/2023]
Abstract
A protocol for the induction of hairy roots on somatic embryos of rhizoclones from Typha domingensis seedlings grown in hydroponic rhizotron systems was established for the first time. Rhizogenesis was induced through the agrotransformation of somatic embryos in oblong and scutellar states of development using the K599, LBA9402, and A4 strains of Agrobacterium rhizogenes. The transfection to the embryos was performed by cocultivation of rhizoclones on a Murashige and Skoog mineral medium at 50% strength (MS0.5), in the dark, at 28 ± 2 °C for 72 h. In contrast to nontransformed embryos that did not exhibit any root tissue, transformed embryos presented hairy roots that varied in number, length, and density depending on the bacterial strain, and K599 was the most effective strain. After analysis via optical microscopy, the transformed embryos were collected and transferred to fresh culture media supplemented with 400 mg mL-1 cefotaxime and 10 mg L-1 ascorbic acid. The efficiency of transformation and survival of the oblong and scutellar embryos were similar among the three bacterial strains. The results show that agrotransformation of somatic embryos of rhizoclones from T. domingensis is a novel and viable strategy for the generation of genetic transformants of Typha that have potential applications in bioremediation technologies.
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Affiliation(s)
- Guadalupe Hernández-Piedra
- Programa de Doctorado en Ecología y Manejo de Sistemas Tropicales, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas Km. 0.5 S/N Entronque a Bosques de Saloya, Villahermosa 86150, Tabasco, Mexico
| | - Violeta Ruiz-Carrera
- Diagnóstico y Manejo de Humedales Tropicales, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas Km. 0.5 S/N Entronque a Bosques de Saloya, Villahermosa 86150, Tabasco, Mexico;
| | - Alberto J. Sánchez
- Diagnóstico y Manejo de Humedales Tropicales, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas Km. 0.5 S/N Entronque a Bosques de Saloya, Villahermosa 86150, Tabasco, Mexico;
| | - Alfonso Azpeitia-Morales
- Campo Experimental Huimanguillo, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Huimanguillo, Km. 1 Carretera Huimanguillo-Cárdenas, Huimanguillo 86400, Tabasco, Mexico;
| | - Graciano Calva-Calva
- Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del IPN, Avenida Instituto Politécnico Nacional 2508, Colonia San Pedro Zacatenco, Ciudad de México 07360, Mexico;
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Naik BJ, Kim SC, Shin MJ, Kim CW, Lim CK, An HJ. Responses to Biotic and Abiotic Stresses and Transgenic Approaches in the Coffee Plant. ACTA ACUST UNITED AC 2019. [DOI: 10.12719/ksia.2019.31.4.359] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Kumar V, AlMomin S, Al-Shatti A, Al-Aqeel H, Al-Salameen F, Shajan AB, Nair SM. Enhancement of heavy metal tolerance and accumulation efficiency by expressing Arabidopsis ATP sulfurylase gene in alfalfa. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:1112-1121. [PMID: 31044606 DOI: 10.1080/15226514.2019.1606784] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Transgenic alfalfa (Medicago sativa L.) plants overexpressing the Arabidopsis ATP sulfurylase gene were generated using Agrobacterium-mediated genetic transformation to enhance their heavy metal accumulation efficiency. The ATP sulfurylase gene was cloned from Arabidopsis, following exposure to vanadium (V) and lead (Pb), and transferred into an Agrobacterium tumefaciens binary vector. This was co-cultivated with leaf explants of the alfalfa genotype Regen SY. Co-cultivated leaf explants were cultured on callus and somatic embryo induction medium, followed by regeneration medium for regenerating complete transgenic plants. The transgenic nature of the plants was confirmed using PCR and southern hybridization. The expression of Arabidopsis ATP sulfurylase gene in the transgenic plants was evaluated through RT-PCR. The selected transgenic lines showed increased tolerance to a mixture of five heavy metals and also demonstrated enhanced metal uptake ability under controlled conditions. The transgenic lines were fertile and did not exhibit any apparent morphological abnormality. The results of this study indicated an effective approach to improve the heavy metal accumulation ability of alfalfa plants which can then be used for the remediation of contaminated soil in arid regions.
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Affiliation(s)
- V Kumar
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
| | - S AlMomin
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
| | - A Al-Shatti
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
| | - H Al-Aqeel
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
| | - F Al-Salameen
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
| | - A B Shajan
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
| | - S M Nair
- Biotechnology Program, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research , Kuwait City , Kuwait
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Vargas-Guevara C, Vargas-Segura C, Villalta-Villalobos J, Pereira LFP, Gatica-Arias A. A simple and efficient agroinfiltration method in coffee leaves ( Coffea arabica L.): assessment of factors affecting transgene expression. 3 Biotech 2018; 8:471. [PMID: 30456005 PMCID: PMC6223413 DOI: 10.1007/s13205-018-1495-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 11/01/2018] [Indexed: 01/15/2023] Open
Abstract
The establishment of a simple, rapid and efficient transient expression system is a necessary tool for the functional validation of candidate genes in coffee biotechnology. The effects of Agrobacterium strain, age of the donor plant, infiltration method, and infiltration medium on transgene expression in detached coffee leaves were evaluated. Regarding the effect of Agrobacterium strain, the expression of uidA was higher in GV3101-treated coffee disks than in LBA4404 and ATHV-treated samples. On the other hand, transient expression of uidA was significantly higher in leaf disks from young plants (6-weeks-old) (13.1 ± 1.4%) than in mature tissue (12-weeks-old) (1.6 ± 1.2%). Transient uidA expression was higher in detached coffee leaf disks from young plants infiltrated with one injection of 15 µL of Agrobacterium strain GV3101::1303 suspended in MS salts supplemented with 30 g/L sucrose, 1.9 g/L MES and 200 uM AS with subsequent sanding of the abaxial epidermis. Using the optimized protocol, expression of the uidA gene was observed 6, 24 and 48 h and 5 weeks after bacterial injection. DNA was extracted from coffee disks with positive GUS expression and specific mgfp5 and uidA fragments were amplified 5 weeks post-agroinfiltration. On the other hand, using the optimized protocol, a specific cry10Aa (500 bp) fragment was amplified in the agro-infiltrated coffee leaf disks 5 weeks post-agroinfiltration with the plasmid pB427-35S-cry10Aa. Moreover, the expression of the gene cry10Aa in two infiltrated coffee leaf disks was verified by RT-PCR and an expected 500 bp fragment was amplified.
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Affiliation(s)
- Cristian Vargas-Guevara
- Laboratorio Biotecnología de Plantas, Escuela de Biología, Universidad de Costa Rica, P.O. Box: 2060-11501, San José, Costa Rica
| | - César Vargas-Segura
- Laboratorio Biotecnología de Plantas, Escuela de Biología, Universidad de Costa Rica, P.O. Box: 2060-11501, San José, Costa Rica
| | - Jimmy Villalta-Villalobos
- Laboratorio Biotecnología de Plantas, Escuela de Biología, Universidad de Costa Rica, P.O. Box: 2060-11501, San José, Costa Rica
| | - Luiz F. P. Pereira
- Laboratório de Biotecnologia Vegetal, Instituto Agronómico do Paraná (IAPAR), Londrina, Brazil
- Empresa Brasileira de Pesquisa Agropecuária (Embrapa Café), Brasília, Brazil
| | - Andrés Gatica-Arias
- Laboratorio Biotecnología de Plantas, Escuela de Biología, Universidad de Costa Rica, P.O. Box: 2060-11501, San José, Costa Rica
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Agrobacterium-mediated genetic transformation and regeneration of transgenic plants using leaf midribs as explants in ramie [Boehmeria nivea (L.) Gaud]. Mol Biol Rep 2014; 41:3257-69. [PMID: 24488319 DOI: 10.1007/s11033-014-3188-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 01/21/2014] [Indexed: 12/21/2022]
Abstract
In this study, leaf midribs, the elite explants, were used for the first time to develop an efficient regeneration and transformation protocol for ramie [Boehmeria nivea (L.) Gaud.] via Agrobacterium-mediated genetic transformation. Sensitivity of leaf midribs regeneration to kanamycin was evaluated, which showed that 40 mg l(-1) was the optimal concentration needed to create the necessary selection pressure. Factors affecting the ramie transformation efficiency were evaluated, including leaf age, Agrobacterium concentration, length of infection time for the Agrobacterium solution, acetosyringone concentration in the co-cultivation medium, and the co-cultivation period. The midrib explants from 40-day-old in vitro shoots, an Agrobacterium concentration at OD600 of 0.6, 10-min immersion in the bacteria solution, an acetosyringone concentration of 50 mg l(-1) in the co-cultivation medium and a 3-day co-cultivation period produced the highest efficiencies of regeneration and transformation. In this study, the average transformation rate was 23.25%. Polymerase chain reactions using GUS and NPTII gene-specific primers, Southern blot and histochemical GUS staining analyses further confirmed that the transgene was integrated into the ramie genome and expressed in the transgenic ramie. The establishment of this system of Agrobacterium-mediated genetic transformation and regeneration of transgenic plants will be used not only to introduce genes of interest into the ramie genome for the purpose of trait improvement, but also as a common means of testing gene function by enhancing or inhibiting the expression of target genes.
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Mohanan S, Gowda K, Kandukuri SV, Chandrashekar A. Involvement of a novel intronic microRNA in cross regulation of N-methyltransferase genes involved in caffeine biosynthesis in Coffea canephora. Gene 2013; 519:107-12. [PMID: 23376454 DOI: 10.1016/j.gene.2013.01.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 01/11/2013] [Accepted: 01/14/2013] [Indexed: 10/27/2022]
Abstract
There are numerous reports on intronic miRNAs from plants, most of which are involved in the regulation of unrelated genes. Some of the target genes are antagonistic to the host genes. Intronic miRNAs in animal systems, however, are known to have synergistic effects. This article is the first to report a similar regulatory effect of a miRNA originating from an intron in plants. NMT genes involved in caffeine biosynthesis were silenced to obtain transformants with reduced caffeine. Transcript analysis revealed the accumulation of transcripts for a related NMT gene (CaMTL1) in transformants bearing either antisense or RNAi constructs. The altered expression was assumed to relate to the silencing of the NMT genes. Bioinformatics analysis of the genes involved in biosynthesis revealed the presence of an intronic miRNA originating from the intron of the theobromine synthase gene targeting CaMTL1. The putative miRNA was cloned and sequenced. Modified 5'-RLM-RACE mapping of the cleavage site and subsequent Northern blotting experimentally demonstrated the presence and activity of such a miRNA in Coffea canephora. This novel regulatory mechanism previously unreported in plants will shed more light onto the evolution of multigene families and the role of introns in this process.
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Affiliation(s)
- Shibin Mohanan
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysore, Karnataka 570020, India
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Recent advances in the genetic transformation of coffee. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2012; 2012:580857. [PMID: 22970380 PMCID: PMC3437269 DOI: 10.1155/2012/580857] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 06/18/2012] [Accepted: 06/28/2012] [Indexed: 12/29/2022]
Abstract
Coffee is one of the most important plantation crops, grown in about 80 countries across the world. The genus Coffea comprises approximately 100 species of which only two species, that is, Coffea arabica (commonly known as arabica coffee) and Coffea canephora (known as robusta coffee), are commercially cultivated. Genetic improvement of coffee through traditional breeding is slow due to the perennial nature of the plant. Genetic transformation has tremendous potential in developing improved coffee varieties with desired agronomic traits, which are otherwise difficult to achieve through traditional breeding. During the last twenty years, significant progress has been made in coffee biotechnology, particularly in the area of transgenic technology. This paper provides a detailed account of the advances made in the genetic transformation of coffee and their potential applications.
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An Protocol for Genetic Transformation of Catharanthus roseus by Agrobacterium rhizogenes A4. Appl Biochem Biotechnol 2012; 166:1674-84. [DOI: 10.1007/s12010-012-9568-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Accepted: 01/18/2012] [Indexed: 11/26/2022]
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Aarrouf J, Castro-Quezada P, Mallard S, Caromel B, Lizzi Y, Lefebvre V. Agrobacterium rhizogenes-dependent production of transformed roots from foliar explants of pepper (Capsicum annuum): a new and efficient tool for functional analysis of genes. PLANT CELL REPORTS 2012; 31:391-401. [PMID: 22016085 DOI: 10.1007/s00299-011-1174-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 09/12/2011] [Accepted: 10/06/2011] [Indexed: 05/31/2023]
Abstract
Pepper is known to be a recalcitrant species to genetic transformation via Agrobacterium tumefaciens. A. rhizogenes-mediated transformation offers an alternative and rapid possibility to study gene functions in roots. In our study, we developed a new and efficient system for A. rhizogenes transformation of the cultivated species Capsicum annuum. Hypocotyls and foliar organs (true leaves and cotyledons) of Yolo Wonder (YW) and Criollo de Morelos 334 (CM334) pepper cultivars were inoculated with the two constructs pBIN-gus and pHKN29-gfp of A. rhizogenes strain A4RS. Foliar explants of both pepper genotypes infected by A4RS-pBIN-gus or A4RS-pHKN29-gfp produced transformed roots. Optimal results were obtained using the combination of the foliar explants with A4RS-pHKN29-gfp. 20.5% of YW foliar explants and 14.6% of CM334 foliar explants inoculated with A4RS-pHKN29-gfp produced at least one root expressing uniform green fluorescent protein. We confirmed by polymerase chain reaction the presence of the rolB and gfp genes in the co-transformed roots ensuring that they integrated both the T-DNA from the Ri plasmid and the reporter gene. We also demonstrated that co-transformed roots of YW and CM334 displayed the same resistance response to Phytophthora capsici than the corresponding untransformed roots. Our novel procedure to produce C. annuum hairy roots will thus support the functional analysis of potential resistance genes involved in pepper P. capsici interaction.
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Affiliation(s)
- J Aarrouf
- INRA Avignon, UR 1052, Unité de Génétique et Amélioration des Fruits et Légumes, BP 94, 84143, Montfavet Cedex, France,
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Zhou ML, Hou HL, Zhu XM, Shao JR, Wu YM, Tang YX. Soybean transcription factor GmMYBZ2 represses catharanthine biosynthesis in hairy roots of Catharanthus roseus. Appl Microbiol Biotechnol 2011; 91:1095-105. [PMID: 21590290 DOI: 10.1007/s00253-011-3288-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2010] [Revised: 03/31/2011] [Accepted: 04/05/2011] [Indexed: 10/18/2022]
Abstract
Catharanthus roseus (L.) G. Don is a plant species known for its production of a variety of terpenoid indole alkaloids, many of which have pharmacological activities. Production of catharanthine in cell cultures or in hairy roots established by transformation with Agrobacterium rhizogenes is of interest because catharanthine can be chemically coupled to the abundant leaf alkaloid vindoline to form the valuable anticancer drug vinblastine. Here, we observed a high amount of catharanthine in hairy roots of C. roseus, established by infecting leaf explants with the A. rhizogenes >agropine-type A4 strain carrying plasmid pRi. T-DNA transfer from plasmid pRi into hairy roots was confirmed by PCR for the essential T-DNA genes rolA and rolB and the agropine synthesis gene ags. The results suggest that integration of T-DNA into the plant DNA plays a positive role on the catharanthine pathway in C. roseus hairy roots. Furthermore, co-transformation with the soybean transcription factor GmMYBZ2 indicated that GmMYBZ2 reduces the catharanthine production by alteration of expression of a number of genes linked to the pathway. Transcription levels of the zinc-finger transcription factor 1 gene ZCT1 were high, and the transcription levels of the anthranilate synthase gene ASα, the strictosidine synthase gene STR, and the key transcription factor gene octadecanoid-responsive Catharanthus APETALA2/ethylene response factor were low. In addition, GmMYBZ2 had a negative effect on the gene expression levels of A-type cyclin CYSA and B-type cyclin CYSB, which was correlated with a reduced growth rate of the hairy roots.
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Affiliation(s)
- Mei-Liang Zhou
- School of Life Science, Sichuan Agricultural University, Yaan, Sichuan 625014, People's Republic of China
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Ribas AF, Dechamp E, Champion A, Bertrand B, Combes MC, Verdeil JL, Lapeyre F, Lashermes P, Etienne H. Agrobacterium-mediated genetic transformation of Coffea arabica (L.) is greatly enhanced by using established embryogenic callus cultures. BMC PLANT BIOLOGY 2011; 11:92. [PMID: 21595964 PMCID: PMC3111370 DOI: 10.1186/1471-2229-11-92] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 05/19/2011] [Indexed: 05/06/2023]
Abstract
BACKGROUND Following genome sequencing of crop plants, one of the main challenges today is determining the function of all the predicted genes. When gene validation approaches are used for woody species, the main obstacle is the low recovery rate of transgenic plants from elite or commercial cultivars. Embryogenic calli have frequently been the target tissue for transformation, but the difficulty in producing or maintaining embryogenic tissues is one of the main problems encountered in genetic transformation of many woody plants, including Coffea arabica. RESULTS We identified the conditions required for successful long-term proliferation of embryogenic cultures in C. arabica and designed a highly efficient and reliable Agrobacterium tumefaciens-mediated transformation method based on these conditions. The transformation protocol with LBA1119 harboring pBin 35S GFP was established by evaluating the effect of different parameters on transformation efficiency by GFP detection. Using embryogenic callus cultures, co-cultivation with LBA1119 OD600 = 0.6 for five days at 20 °C enabled reproducible transformation. The maintenance conditions for the embryogenic callus cultures, particularly a high auxin to cytokinin ratio, the age of the culture (optimum for 7-10 months of proliferation) and the use of a yellow callus phenotype, were the most important factors for achieving highly efficient transformation (> 90%). At the histological level, successful transformation was related to the number of proembryogenic masses present. All the selected plants were proved to be transformed by PCR and Southern blot hybridization. CONCLUSION Most progress in increasing transformation efficiency in coffee has been achieved by optimizing the production conditions of embryogenic cultures used as target tissues for transformation. This is the first time that a strong positive effect of the age of the culture on transformation efficiency was demonstrated. Our results make Agrobacterium-mediated transformation of embryogenic cultures a viable and useful tool both for coffee breeding and for the functional analysis of agronomically important genes.
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Affiliation(s)
- Alessandra F Ribas
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement - Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - Eveline Dechamp
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement - Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - Anthony Champion
- IRD - Institut de Recherche pour le Développement, UMR RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - Benoît Bertrand
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement - Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - Marie-Christine Combes
- IRD - Institut de Recherche pour le Développement, UMR RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - Jean-Luc Verdeil
- CIRAD-BIOS, MRI, UMR-DAP, Plant cell imaging platform (www.PHIV.cirad.fr), Avenue Agropolis, 34398 Montpellier, Cedex 5, France
| | - Fabienne Lapeyre
- CIRAD-BIOS, MRI, UMR-DAP, Plant cell imaging platform (www.PHIV.cirad.fr), Avenue Agropolis, 34398 Montpellier, Cedex 5, France
| | - Philippe Lashermes
- IRD - Institut de Recherche pour le Développement, UMR RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - Hervé Etienne
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement - Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
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Majumdar S, Garai S, Jha S. Genetic transformation of Bacopa monnieri by wild type strains of Agrobacterium rhizogenes stimulates production of bacopa saponins in transformed calli and plants. PLANT CELL REPORTS 2011; 30:941-54. [PMID: 21350825 DOI: 10.1007/s00299-011-1035-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Revised: 01/27/2011] [Accepted: 02/01/2011] [Indexed: 05/30/2023]
Abstract
We have developed an efficient transformation system for Bacopa monnieri, an important Indian medicinal plant, using Agrobacterium rhizogenes strains LBA 9402 and A4. Transformed roots induced by strain LBA 9402 spontaneously dedifferentiated to callus while excised roots induced by strain A4 spontaneously showed induction of shoot buds within 10 days. PCR and RT-PCR analysis revealed the presence and expression of the rolAB and rolC genes at the transcription level in pRi A4 transformed cultures indicating that the TL-DNA was integrated retained and expressed in the A4-Ri transformed shoots. Transformed calli showed the presence of rolAB or rol A, TR and ags genes. Transformed plants showed morphological features typically seen in transgenic plants produced by A. rhizogenes. Growth and biomass accumulation was significantly higher in the transformed shoots (twofold) and roots (fourfold) than in the non-transformed (WT) plants. In pRi A4-transformed plants, the content of bacopasaponin D, bacopasaponin F, bacopaside II and bacopaside V was enhanced significantly as compared to WT plants of similar age while bacoside A3 and bacopasaponin C content was comparable with that of WT plants. Significant increase in content of five bacopa saponins could be detected in pRi 9402-transformed callus cultures. There is an overall stimulatory effect on accumulation of bacopa saponins in transformed plants and cells of B. monnieri establishing the role of endogenous elicitation by Ri T-DNA of A. rhizogenes.
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Affiliation(s)
- Sukanya Majumdar
- Centre of Advanced Study, Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
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De Guglielmo-Cróquer Z, Altosaar I, Zaidi M, Menéndez-Yuffá A. Transformation of coffee (Coffea Arabica L. cv. Catimor) with the cry1ac gene by biolistic, without the use of markers. BRAZ J BIOL 2010; 70:387-93. [DOI: 10.1590/s1519-69842010000200022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Accepted: 06/01/2009] [Indexed: 12/24/2022] Open
Abstract
The transformation of coffee plantlets with the cry1ac gene of Bacillus thuringiensis was achieved by biolistic using either the whole pUBC plasmid or only the ubi-cry1ac-nos genetic cassette. The cry1ac gene was inserted into coffee plants in order to confer resistance to the leaf miner Leucoptera coffeella, an insect responsible for considerable losses in coffee crops. Bearing in mind that the genetic cassettes used for this study lack reporter genes and/or selection marker genes, the parameters for the transformation procedure by biolistic were previously standardised with a plasmid carrying the gus reporter gene. The presence of the cry1ac gene in young plantlet tissues was determined by PCR, Southern blot and reverse transcription-PCR. Our results show that the obtainment of viable coffee plantlets, transformed by bombardment with the cry1ac gene and without selection markers nor reporter genes, is feasible.
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Kumar V, Ravishankar G. Current Trends in Producing Low Levels of Caffeine in Coffee Berry and Processed Coffee Powder. FOOD REVIEWS INTERNATIONAL 2009. [DOI: 10.1080/87559120802458099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Alpizar E, Dechamp E, Lapeyre-Montes F, Guilhaumon C, Bertrand B, Jourdan C, Lashermes P, Etienne H. Agrobacterium rhizogenes-transformed roots of coffee (Coffea arabica): conditions for long-term proliferation, and morphological and molecular characterization. ANNALS OF BOTANY 2008; 101:929-40. [PMID: 18316320 PMCID: PMC2710235 DOI: 10.1093/aob/mcn027] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Revised: 01/09/2008] [Accepted: 01/31/2008] [Indexed: 05/21/2023]
Abstract
BACKGROUND AND AIMS The aims of this study were to set up proliferation conditions for hairy roots of Coffea arabica regenerated after transformation by Agrobacterium rhizogenes strain A4-RS, and to carry out the morphological and molecular characterization of hairy root clones maintained over the long term. METHODS Auxin supply, light conditions and sucrose concentration were modified with the aim of establishing efficient root proliferation conditions. The morphological variability among 62 established hairy root clones was phenotyped by scanning the roots and analysing the images using 'whinRHIZO' software procedures. PCR analysis of integration in transformed root cells of rol and aux oncogenes from the T-DNA of the Ri plasmid was used to study the molecular variability among clones. KEY RESULTS Auxin supply was necessary to obtain and stimulate growth and branching, and IBA applied at 0.5 microm was the most efficient auxin. Significant differences were shown among the 62 clones for total root length and for the percentage of fine roots. These variables were stable across subcultures and could hence be used for efficient characterization of hairy root clones. The majority of hairy root clones (86 %) exhibited non-significant phenotype differences with non-transformed roots. Eight clones were significantly different from the non-transformed controls in that they possessed a low proportion of fine roots. Two other hairy root clones grew significantly faster than the other clones. The PCR analysis revealed a low variability in the integration of rol and aux oncogenes in transformed root cells. The T(R)-DNA was never integrated as aux1 and aux2 genes were not found, although rolB and rolC genes from the T(L)-DNA were always present. CONCLUSIONS The discovery of low morphological variability among coffee hairy roots together with the identification of morphological variables allowing easy identification of phenotypically altered clones represent two important results. They make hairy roots a possible, and efficient, tool for functional-genomic studies of coffee root genes.
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Affiliation(s)
- E. Alpizar
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement–Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB, 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - E. Dechamp
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement–Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB, 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - F. Lapeyre-Montes
- CIRAD-BIOS, UMR-DAP, Plateau d'histologie et d'imagerie cellulaire végétale (PHIV), Avenue Agropolis, 34398 Montpellier, Cedex 5, France
| | - C. Guilhaumon
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement–Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB, 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - B. Bertrand
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement–Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB, 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | - C. Jourdan
- CIRAD – Tree-Based Planted Ecosystems Unit, TA 80/01, Avenue Agropolis, 34398 Montpellier, Cedex 5, France
| | - P. Lashermes
- Institut de Recherche pour le Développement (IRD). UMR-RPB, IRD, 911 Av. Agropolis, BP 64501, 34394, Montpellier, Cedex 5, France
| | - H. Etienne
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement–Département des Systèmes Biologiques (CIRAD-BIOS). UMR-RPB, 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
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Alpizar E, Dechamp E, Espeout S, Royer M, Lecouls AC, Nicole M, Bertrand B, Lashermes P, Etienne H. Efficient production of Agrobacterium rhizogenes-transformed roots and composite plants for studying gene expression in coffee roots. PLANT CELL REPORTS 2006; 25:959-67. [PMID: 16596429 DOI: 10.1007/s00299-006-0159-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2006] [Accepted: 03/16/2006] [Indexed: 05/07/2023]
Abstract
The possibility of rapid validation and functional analysis of nematode resistance genes is a common objective for numerous species and particularly for woody species. In this aim, we developed an Agrobacterium rhizogenes-mediated transformation protocol for Coffea arabica enabling efficient and rapid regeneration of transformed roots from the hypocotyls of germinated zygotic embryos, and the subsequent production of composite plants. The A. rhizogenes strain A4RS proved to be the most virulent. High transformation efficiencies (70%) were obtained using a 2-week co-cultivation period at a temperature of 15-18 degrees C. Using a p35S-gusA-int construct inserted in the pBIN19 binary plasmid, we could estimate that 35% of transformed roots were GUS positive (co-transformed). Using the GUS assay as visual marker, 40% composite plants bearing a branched co-transformed rootstock could be obtained after only 12 weeks without selection with herbicides or antibiotics. Transgenic coffee roots obtained with A. rhizogenes did not exhibit the 'hairy' disturbed phenotype and were morphologically similar to normal roots. PCR analyses demonstrated that all co-transformed roots were positive for the expected rolB and gusA genes. Transformed and non-transformed root systems from both susceptible and resistant varieties were inoculated with Meloidogyne exigua nematode individuals. Inoculation of composite plants from the Caturra susceptible variety resulted in the normal development of nematode larvae. Numbers of extracted nematodes demonstrated that transformed roots retain the resistance/sensibility phenotype of varieties from which they are derived. These results suggest that composite plants constitute a powerful tool for studying nematode resistance genes.
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Affiliation(s)
- E Alpizar
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Département des Cultures Pérennes (CIRAD-CP), UMR-DGPC, Résistance des Plantes, Montpellier, France
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