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Xie J, He C, Li Z, Li M, He S, Qian J, Tan B, Zheng X, Cheng J, Wang W, Li J, Feng J, Ye X. A rapid and efficient Agrobacterium-mediated transient transformation system in grape berries. PROTOPLASMA 2024; 261:819-830. [PMID: 38418654 DOI: 10.1007/s00709-024-01938-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
Transient transformation is extremely useful for rapid in vivo assessment of gene function, especially for fruit-related genes. Grape berry, while an important fruit crop, is recalcitrant to transient transformation, due to the high turgor pressure in its mesocarp cells that limits the ability of Agrobacterium to penetrate into the tissue. It is urgent to establish a simple transient transformation system for rapid analysis of gene function. In this study, different injection methods, grape genotypes, and developmental stages were tested in order to develop a rapid and efficient Agrobacterium-mediated transient transformation methodology for grape berries. Two injection methods, namely punch injection and direct injection, were evaluated using the β-glucuronidase (GUS) gene and by x-gluc tissue staining and 4-methylumbelliferyl-β-D-glucuronide fluorescence analysis. The results indicated that there were no significant differences on transformation effects between the two methods, but the latter was more suitable because of its simplicity and convenience. Six grape cultivars ('Hanxiangmi', 'Moldova', 'Zijixin', 'Jumeigui', 'Shine-Muscat', and 'A17') were tested for transient transformation. 'Hanxiangmi', 'Moldova', and 'Zijixin' grape berries were not suitable for agroinfiltration due to frequently fruit cracking, browning, and formation of scar skin. The fruit integrity rates of 'Jumeigui', 'Shine-Muscat', and 'A17' berries were all above 80%, and GUS activity was detected in the berries of the three cultivars 3-14 days after injection with the Agrobacterium culture, while higher GUS activities were observed in the 'Jumeigui' berries. The levels of GUS activity in injected berries at 7-8 weeks after full blooming (WAFB) were more than twice at 6 WAFB. In subsequent assays, the over-expression of MYB transcription factor VvMYB44 via transient transformation accelerated the anthocyanin accumulation and fruit coloring through raising the expression levels of VvLAR1, VvUFGT, VvLDOX, VvANS, and VvDFR, which verified the effectiveness of this transformation system. These experiments finally identified the reliable grape cultivars and suitable operational approach for transient transformation and further indicated that this Agrobacterium-mediated transient transformation system was efficient and suitable for the elucidation of gene function in grape berries.
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Affiliation(s)
- Jiannan Xie
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Chang He
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Zhiqian Li
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Meng Li
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Shanshan He
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Jiakang Qian
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Bin Tan
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Xianbo Zheng
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Jun Cheng
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Wei Wang
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Jidong Li
- College of Forestry, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China
| | - Jiancan Feng
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China.
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China.
| | - Xia Ye
- College of Horticulture, Henan Agricultural University, Henan Province, Zhengzhou, 450002, People's Republic of China.
- International Joint Laboratory of Henan Horticultural Crop Biology, Henan Province, Zhengzhou, 450002, People's Republic of China.
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Wu K, Xu C, Li T, Ma H, Gong J, Li X, Sun X, Hu X. Application of Nanotechnology in Plant Genetic Engineering. Int J Mol Sci 2023; 24:14836. [PMID: 37834283 PMCID: PMC10573821 DOI: 10.3390/ijms241914836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/20/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
The ever-increasing food requirement with globally growing population demands advanced agricultural practices to improve grain yield, to gain crop resilience under unpredictable extreme weather, and to reduce production loss caused by insects and pathogens. To fulfill such requests, genome engineering technology has been applied to various plant species. To date, several generations of genome engineering methods have been developed. Among these methods, the new mainstream technology is clustered regularly interspaced short palindromic repeats (CRISPR) with nucleases. One of the most important processes in genome engineering is to deliver gene cassettes into plant cells. Conventionally used systems have several shortcomings, such as being labor- and time-consuming procedures, potential tissue damage, and low transformation efficiency. Taking advantage of nanotechnology, the nanoparticle-mediated gene delivery method presents technical superiority over conventional approaches due to its high efficiency and adaptability in different plant species. In this review, we summarize the evolution of plant biomolecular delivery methods and discussed their characteristics as well as limitations. We focused on the cutting-edge nanotechnology-based delivery system, and reviewed different types of nanoparticles, preparation of nanomaterials, mechanism of nanoparticle transport, and advanced application in plant genome engineering. On the basis of established methods, we concluded that the combination of genome editing, nanoparticle-mediated gene transformation and de novo regeneration technologies can accelerate crop improvement efficiently in the future.
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Affiliation(s)
- Kexin Wu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Changbin Xu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Tong Li
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Haijie Ma
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Jinli Gong
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Xiaolong Li
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Xuepeng Sun
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
| | - Xiaoli Hu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Hangzhou 311300, China
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Ferreira AC, Rebelo BA, Abranches R. A simplified protocol for Agrobacterium-mediated transformation of cell suspension cultures of the model species Medicago truncatula A17. PLANT CELL, TISSUE AND ORGAN CULTURE 2023; 153:669-675. [PMID: 37197004 PMCID: PMC10034231 DOI: 10.1007/s11240-023-02495-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/10/2023] [Indexed: 05/19/2023]
Abstract
This manuscript describes a unique protocol for the rapid transformation of Medicago truncatula A17 cell suspension cultures mediated by Agrobacterium tumefaciens. Medicago cells were collected on day 7 of the growth curve, which corresponded to the beginning of the exponential phase. They were then co-cultured with Agrobacterium for 3 days before being spread onto a petri dish with appropriate antibiotic selection. The Receptor Binding Domain of the Spike protein of SARS-CoV-2 was used as a model to develop this protocol. The presence of the transgene was assessed using PCR, and the integrity of the product was evaluated by SDS-PAGE and Western-blotting.
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Affiliation(s)
- Ana Clara Ferreira
- Plant Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier, ITQB NOVA – Universidade Nova de Lisboa, Av. República, 2780-157 Oeiras, Portugal
| | - Bárbara A. Rebelo
- Plant Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier, ITQB NOVA – Universidade Nova de Lisboa, Av. República, 2780-157 Oeiras, Portugal
| | - Rita Abranches
- Plant Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier, ITQB NOVA – Universidade Nova de Lisboa, Av. República, 2780-157 Oeiras, Portugal
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Seedlessness Trait and Genome Editing—A Review. Int J Mol Sci 2023; 24:ijms24065660. [PMID: 36982733 PMCID: PMC10057249 DOI: 10.3390/ijms24065660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
Parthenocarpy and stenospermocarpy are the two mechanisms underlying the seedless fruit set program. Seedless fruit occurs naturally and can be produced using hormone application, crossbreeding, or ploidy breeding. However, the two types of breeding are time-consuming and sometimes ineffective due to interspecies hybridization barriers or the absence of appropriate parental genotypes to use in the breeding process. The genetic engineering approach provides a better prospect, which can be explored based on an understanding of the genetic causes underlying the seedlessness trait. For instance, CRISPR/Cas is a comprehensive and precise technology. The prerequisite for using the strategy to induce seedlessness is identifying the crucial master gene or transcription factor liable for seed formation/development. In this review, we primarily explored the seedlessness mechanisms and identified the potential candidate genes underlying seed development. We also discussed the CRISPR/Cas-mediated genome editing approaches and their improvements.
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Sánchez-Ramos M, Marquina-Bahena S, Alvarez L, Bernabé-Antonio A, Cabañas-García E, Román-Guerrero A, Cruz-Sosa F. Obtaining 2,3-Dihydrobenzofuran and 3-Epilupeol from Ageratina pichinchensis (Kunth) R.King & Ho.Rob. Cell Cultures Grown in Shake Flasks under Photoperiod and Darkness, and Its Scale-Up to an Airlift Bioreactor for Enhanced Production. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020578. [PMID: 36677637 PMCID: PMC9865622 DOI: 10.3390/molecules28020578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 01/11/2023]
Abstract
Ageratina pichinchensis (Kunth) R.King & Ho.Rob. is a plant used in traditional Mexican medicine, and some biotechnological studies have shown that its calluses and cell suspension cultures can produce important anti-inflammatory compounds. In this study, we established a cell culture of A. pichinchensis in a 2 L airlift bioreactor and evaluated the production of the anti-inflammatory compounds 2,3-dihydrobenzofuran (1) and 3-epilupeol (2). The maximum biomass production (11.90 ± 2.48 g/L) was reached at 11 days of culture and cell viability was between 80% and 90%. Among kinetic parameters, the specific growth rate (µ) was 0.2216 days-1 and doubling time (td) was 3.13 days. Gas chromatography coupled with mass spectrometry (GC-MS) analysis of extracts showed the maximum production of compound 1 (903.02 ± 41.06 µg/g extract) and compound 2 (561.63 ± 10.63 µg/g extract) at 7 and 14 days, respectively. This study stands out for the significant production of 2,3-dihydrobenzofuran and 3-epilupeol and by the significant reduction in production time compared to callus and cell suspension cultures, previously reported. To date, these compounds have not been found in the wild plant, i.e., its production has only been reported in cell cultures of A. pichinchensis. Therefore, plant cell cultured in an airlift reactor can be an alternative for the improved production of these anti-inflammatory compounds.
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Affiliation(s)
- Mariana Sánchez-Ramos
- Department of Biotechnology, Metropolitan Autonomous University-Iztapalapa Campus, Av. Ferrocarril de San Rafael Atlixco 186, Col. Leyes de Reforma 1a. Sección, Alcaldía Iztapalapa, Mexico City 09310, Distrito Federal, Mexico
- Correspondence: (M.S.-R.); (F.C.-S.)
| | - Silvia Marquina-Bahena
- Chemical Research Center-IICBA, Autonomous University of the State of Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca 62209, Morelos, Mexico
| | - Laura Alvarez
- Chemical Research Center-IICBA, Autonomous University of the State of Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca 62209, Morelos, Mexico
| | - Antonio Bernabé-Antonio
- Department of Wood, Pulp and Paper, University Center of Exact Sciences and Engineering, University of Guadalajara, Km 15.5 Guadalajara-Nogales, Col. Las Agujas, Zapopan 45100, Jalisco, Mexico
| | - Emmanuel Cabañas-García
- Scientific and Technological Studies Center No. 18, National Polytechnic Institute, Blvd. del Bote 202 Cerro del Gato, Ejido La Escondida, Col. Ciudad Administrativa, Zacatecas 98160, Zacatecas, Mexico
| | - Angélica Román-Guerrero
- Department of Biotechnology, Metropolitan Autonomous University-Iztapalapa Campus, Av. Ferrocarril de San Rafael Atlixco 186, Col. Leyes de Reforma 1a. Sección, Alcaldía Iztapalapa, Mexico City 09310, Distrito Federal, Mexico
| | - Francisco Cruz-Sosa
- Department of Biotechnology, Metropolitan Autonomous University-Iztapalapa Campus, Av. Ferrocarril de San Rafael Atlixco 186, Col. Leyes de Reforma 1a. Sección, Alcaldía Iztapalapa, Mexico City 09310, Distrito Federal, Mexico
- Correspondence: (M.S.-R.); (F.C.-S.)
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Jogam P, Sandhya D, Alok A, Shekhawat MS, Peddaboina V, Singh K, Allini VR. A grobacterium-mediated genetic transformation and cloning of candidate reference genes in suspension cells of Artemisia pallens Wall. ex DC. 3 Biotech 2022; 12:194. [PMID: 35910289 PMCID: PMC9334505 DOI: 10.1007/s13205-022-03251-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 07/05/2022] [Indexed: 11/01/2022] Open
Abstract
A reliable and stable Agrobacterium-mediated genetic transformation system for Artemisia pallens has been developed using cell suspension cultures derived from cotyledon explants. Cotyledon, attached cotyledon, and compound leaves were found to be suitable for the induction of callus among five different types of explants tested. The yellow friable callus derived from attached cotyledon was used to initiate suspension cultures in Suspension Culture Medium (SCM) which was supplemented with 2,4-dichlorophenoxyacetic acid (2,4-D) at 2.0 mg L-1 and in combination with different concentrations of Zeatin (ZEA) at 0.25 mg L-1. Two different shock treatments, cold shock (at 4 ℃) for 20 min and heat shock (at 45 ℃) treatment for 5 min, heat shock treatment increased the transformation efficiency. The supplementation of Pluronic F-68 (0.05%) significantly enhanced the transformation efficiency of suspension cultures, whereas Silwet L-77 (0.05%) leads to more browning of the cells and reduced the transformation efficiency. The maximum GUS intensity was recorded with an optimal intensity of blue spots in the transformed cells. The highest GUS fluorometric activity measured was 879.4 ± 113.7 nmol 4MU/mg/min in transformed cell suspension cultures. The hygromycin-resistant calli showed intense blue color in GUS histochemical assay. The transgene integration into the plant genome was confirmed by polymerase chain reaction (PCR) using uidA specific primers in six hygromycin-resistant cell lines. The partial coding sequence of three candidate reference genes, i.e., ADP-ribosylation factor (Arf), β-actin (Act), and ubiquitin (Ubi), and carotenoid biosynthesis pathway gene, i.e., Phytoene desaturase (Pds) were cloned, sequenced, and submitted to NCBI for the first time. The quantitative mRNA expression of the transgene (uidA) and internal ApPds gene were evaluated in transgenic callus lines. The present Agrobacterium-mediated genetic transformation protocol could help in better understanding of the metabolic pathways of this medicinally important plant and its genetic improvement. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03251-x.
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Affiliation(s)
- Phanikanth Jogam
- Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Dulam Sandhya
- Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Anshu Alok
- Department of Biotechnology, Punjab University, Chandigarh, 160014 India
| | - Mahipal S. Shekhawat
- Biotechnology Unit, Kanchi Mamunivar Government Institute for Postgraduate Studies and Research, Puducherry, 605008 India
| | | | - Kashmir Singh
- Department of Biotechnology, Punjab University, Chandigarh, 160014 India
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Traiyasuk W, Komaikul J, Anantachoke N, Kitisripanya T. Establishment of Afgekia mahidolae B.L. Burtt & Chermsir in vitro culture and effect of elicitation on its bioactive compounds. Nat Prod Res 2022; 37:1829-1837. [PMID: 36047978 DOI: 10.1080/14786419.2022.2118740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Afgekia mahidolae is a rare plant species that possesses antioxidant, antimicrobial, and wound healing properties. This study aimed to establish the in vitro culture of A. mahidolae and investigate the effects of elicitors on their phenolic and flavonoid production, including the antioxidant activities. The established callus was prepared in the form of cell suspension cultures to determine the effect of elicitors. After elicitation for 3 days, A. mahidolae cell suspension cultures treated by 5 µM salicylic acid or 100 mg/L yeast extract exhibited significantly higher levels of total phenolic and total flavonoid content than untreated cultures, which correlated to the antioxidant activities. In addition, the profiles of phenolic and flavonoid compounds in the callus and intact leaves of A. mahidolae were determined by LC-MS, which showed different phytochemicals. The findings of this study may encourage more sustainable development of A. mahidolae cultivation.
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Affiliation(s)
- Warangkana Traiyasuk
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Jukrapun Komaikul
- Center for Vaccine Development, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Natthinee Anantachoke
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Tharita Kitisripanya
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
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Moniruzzaman M, Zhong Y, Huang Z, Zhong G. Having a Same Type IIS Enzyme's Restriction Site on Guide RNA Sequence Does Not Affect Golden Gate (GG) Cloning and Subsequent CRISPR/Cas Mutagenesis. Int J Mol Sci 2022; 23:4889. [PMID: 35563297 PMCID: PMC9101711 DOI: 10.3390/ijms23094889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 12/10/2022] Open
Abstract
Golden gate/modular cloning facilitates faster and more efficient cloning by utilizing the unique features of the type IIS restriction enzymes. However, it is known that targeted insertion of DNA fragment(s) must not include internal type IIS restriction recognition sites. In the case of cloning CRISPR constructs by using golden gate (GG) cloning, this narrows down the scope of guide RNA (gRNA) picks because the selection of a good gRNA for successful genome editing requires some obligation of fulfillment, and it is unwanted if a good gRNA candidate cannot be picked only because it has an internal type IIS restriction recognition site. In this article, we have shown that the presence of a type IIS restriction recognition site in a gRNA does not affect cloning and subsequent genome editing. After each step of GG reactions, correct insertions of gRNAs were verified by colony color and restriction digestion and were further confirmed by sequencing. Finally, the final vector containing a Cas12a nuclease and four gRNAs was used for Agrobacterium-mediated citrus cell transformation. Sequencing of PCR amplicons flanking gRNA-2 showed a substitution (C to T) mutation in transgenic plants. The knowledge derived from this study could widen the scope of GG cloning, particularly of gRNAs selection for GG-mediated cloning into CRISPR vectors.
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Affiliation(s)
- M. Moniruzzaman
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China; (Y.Z.); (Z.H.)
- Center for Viticulture and Small Fruit Research, Florida A&M University, Tallahassee, FL 32308, USA
| | - Yun Zhong
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China; (Y.Z.); (Z.H.)
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Zhifeng Huang
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China; (Y.Z.); (Z.H.)
| | - Guangyan Zhong
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China; (Y.Z.); (Z.H.)
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de Melo Souza JM, de Oliveira CR, da Rocha Tavano EC, Soriano L, Martinelli AP. Somatic Embryogenesis in Citrus (Citrus spp.), var. Valencia. Methods Mol Biol 2022; 2527:127-132. [PMID: 35951188 DOI: 10.1007/978-1-0716-2485-2_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Somatic embryogenesis has been obtained in many citrus cultivars; however, the efficiency of the system is genotype dependent and culture synchronization is important to reach more efficient systems. In this chapter we present a detailed protocol of somatic embryogenesis induction from nucellar tissue and the use of an alternative method of callus sieving for culture synchronization and embryo production. This is a simple method which can also be evaluated for other species aiming at better culture efficiency and somatic embryo production.
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Affiliation(s)
| | - Carolina Rossi de Oliveira
- University of São Paulo/Center for Nuclear Energy in Agriculture-Plant Biotechnology Lab, Piracicaba, SP, Brazil
| | | | - Leonardo Soriano
- University of São Paulo/Center for Nuclear Energy in Agriculture-Plant Biotechnology Lab, Piracicaba, SP, Brazil
| | - Adriana Pinheiro Martinelli
- University of São Paulo/Center for Nuclear Energy in Agriculture-Plant Biotechnology Lab, Piracicaba, SP, Brazil.
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Permyakova NV, Marenkova TV, Belavin PA, Zagorskaya AA, Sidorchuk YV, Uvarova EA, Kuznetsov VV, Rozov SM, Deineko EV. Assessment of the Level of Accumulation of the dIFN Protein Integrated by the Knock-In Method into the Region of the Histone H3.3 Gene of Arabidopsis thaliana. Cells 2021; 10:2137. [PMID: 34440906 PMCID: PMC8394151 DOI: 10.3390/cells10082137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/16/2021] [Accepted: 08/17/2021] [Indexed: 12/14/2022] Open
Abstract
Targeted DNA integration into known locations in the genome has potential advantages over the random insertional events typically achieved using conventional means of genetic modification. We investigated the possibility of obtaining a suspension cell culture of Arabidopsis thaliana carrying a site-specific integration of a target gene encoding modified human interferon (dIFN) using endonuclease Cas9. For the targeted insertion, we selected the region of the histone H3.3 gene (HTR5) with a high constitutive level of expression. Our results indicated that Cas9-induced DNA integration occurred with the highest frequency with the construction with donor DNA surrounded by homology arms and Cas9 endonuclease recognition sites. Among the monoclones of the four cell lines with knock-in studied, there is high heterogeneity in the level of expression and accumulation of the target protein. The accumulation of dIFN protein in cell lines with targeted insertions into the target region of the HTR5 gene does not statistically differ from the level of accumulation of dIFN protein in the group of lines with random integration of the transgene. However, one among the monoclonal lines with knock-in has a dIFN accumulation level above 2% of TSP, which is very high.
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Affiliation(s)
- Natalya V. Permyakova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, pr. Lavrentieva 10, 630090 Novosibirsk, Russia; (T.V.M.); (P.A.B.); (A.A.Z.); (Y.V.S.); (E.A.U.); (V.V.K.); (S.M.R.); (E.V.D.)
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