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Li H, Deng L, Weng L, Li J, Hu W, Yu J, Xiao Y, Xiao G. Cell wall-localized Bt protein endows rice high resistance to Lepidoptera pests. PEST MANAGEMENT SCIENCE 2024; 80:1728-1739. [PMID: 38009289 DOI: 10.1002/ps.7901] [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: 06/27/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 11/28/2023]
Abstract
BACKGROUND The commercialized Bt (Bacillus thuringiensis) crops accumulate Bt protein within cells, but the intracellular interactions of foreign protein with endogenous protein inevitably result in large or small unintended effects. In this study, the Bt gene Cry1Ca was linked with the sequences of extracellular secretion signal peptide and carbohydrate binding module 11 to constitute a fusion gene SP-Cry1Ca-CBM11, and the fusion gene driven by constitutive promoters was used for secreting and anchoring onto the cell wall to minimize unintended effects. RESULTS The transient expression in tobacco leaves demonstrated that the fusion protein was anchored on cell walls. The Cry1Ca contents of five homozygous rice transformants of single-copy insertion were different and descended in the order leaf > root > stem. The maximum content of Cry1Ca was 17.55 μg g-1 in leaves of transformant 21H037. The bioassay results revealed that the transformants exhibited high resistance to lepidopteran pests. The corrected mortality of pink stem borer (Sesamia inferens) and striped stem borer (Chilo suppressalis) ranged from 96.33% to 100%, and from 83.32% to 100%, respectively, and the corrected mortality of rice leaf roller (Cnaphalocrocis medinalis) was 92.53%. Besides, the agronomic traits of the five transformants were normal and similar to that of the recipient, and the transformants were highly resistant to glyphosate at the germination and seedling stages. CONCLUSION The fusion Bt protein was accumulated on cell walls and endowed the rice with high resistance to lepidopteran pests without unintended effects in agronomic traits. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Hua Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lihua Deng
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Lvshui Weng
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Jinjiang Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Wenbin Hu
- Hunan Academy of Agricultural Sciences, Changsha, China
| | - Jianghui Yu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Youlun Xiao
- Hunan Academy of Agricultural Sciences, Changsha, China
| | - Guoying Xiao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
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Tanwar N, Mahto BK, Rookes JE, Cahill DM, Bansal KC, Lenka SK. Chloroplast transformation in new cultivars of tomato through particle bombardment. 3 Biotech 2024; 14:120. [PMID: 38545123 PMCID: PMC10963679 DOI: 10.1007/s13205-024-03954-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 02/03/2024] [Indexed: 04/11/2024] Open
Abstract
A protocol has been established for genetic transformation of the chloroplasts in two new cultivars of tomato (Solanum lycopersicum L.) grown in India and Australia: Pusa Ruby and Yellow Currant. Tomato cv. Green Pineapple was also used as a control that has previously been used for establishing chloroplast transformation by other researchers. Selected tomato cultivars were finalized from ten other tested cultivars (Green Pineapple excluded) due to their high regeneration potential and better response to chloroplast transformation. This protocol was set up using a chloroplast transformation vector (pRB94) for tomatoes that is made up of a synthetic gene operon. The vector has a chimeric aadA selectable marker gene that is controlled by the rRNA operon promoter (Prrn). This makes the plant or chloroplasts resistant to spectinomycin and streptomycin. After plasmid-coated particle bombardment, leaf explants were cultured in 50 mg/L selection media. Positive explant selection from among all the dead-appearing (yellow to brown) explants was found to be the major hurdle in the study. Even though this study was able to find plastid transformants in heteroplasmic conditions, it also found important parameters and changes that could speed up the process of chloroplast transformation in tomatoes, resulting in homoplasmic plastid-transformed plants. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03954-3.
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Affiliation(s)
- Neha Tanwar
- TERI-Deakin Nano-Biotechnology Centre, The Energy Resources Institute (TERI), New Delhi, 110003 India
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds Campus, Geelong, VIC 3216 Australia
| | - Binod K. Mahto
- TERI-Deakin Nano-Biotechnology Centre, The Energy Resources Institute (TERI), New Delhi, 110003 India
- University Department of Botany, Ranchi University, Ranchi, Jharkhand 834008 India
| | - James E. Rookes
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds Campus, Geelong, VIC 3216 Australia
| | - David M. Cahill
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds Campus, Geelong, VIC 3216 Australia
| | - Kailash C. Bansal
- TERI-Deakin Nano-Biotechnology Centre, The Energy Resources Institute (TERI), New Delhi, 110003 India
- National Academy of Agricultural Sciences, New Delhi, 110012 India
| | - Sangram K. Lenka
- TERI-Deakin Nano-Biotechnology Centre, The Energy Resources Institute (TERI), New Delhi, 110003 India
- Present Address: Department of Plant Biotechnology, Gujarat Biotechnology University, Gujarat International Finance Tec (GIFT)-City, North Gate, Gandhinagar, 382355 Gujarat India
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Nirwan S, Chatterjee A, Cevik V, Holub EB, Jones JDG, Tewari AK, Shrivastava N, Agnihotri A, Sharma P. Genetic manipulation of Indian mustard genotypes with WRR-gene(s) confers resistance against Albugo candida. Mol Biol Rep 2024; 51:199. [PMID: 38270712 DOI: 10.1007/s11033-023-09040-w] [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: 08/14/2022] [Accepted: 10/26/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND Brassica species is the second most important edible oilseed crop in India. Albugo candida (Pers.) Kuntze, a major oomycete disease of oilseed brassica causing white rust, leads to 60% yield loss globally. The prevalence of A. candida race 2 (Ac2V) that specifically infects B. juncea, coupled with limitations of conventional methods has resulted in a dearth of white rust resistance resources in cultivated varieties. METHODS AND RESULTS In an effort to develop resistant plants, Agrobacterium mediated genetic transformation of three B. juncea genotypes viz., susceptible host var. Varuna, along with its doubled haploid mutant lines C66 and C69 (showing moderate tolerance to field isolates of A. candida) was initiated to transfer resistance genes (WRR8Sf-2 and WRR9Hi-0) identified in Arabidopsis thaliana against race Ac2V, that encode for Toll-like/interleukin-1 receptor-nucleotide binding-leucine-rich repeat proteins that recognize effectors of the pathogen races. CONCLUSIONS Our results demonstrate that introduction of resistance genes from a tertiary gene pool by genetic transformation enhances disease resistance in B. juncea genotypes to a highly virulent Ac2V isolate.
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Affiliation(s)
- Shradha Nirwan
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201303, India
| | - Anupriya Chatterjee
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201303, India
| | - Volkan Cevik
- Department of Life Sciences, The Milner Centre for Evolution, University of Bath, Bath, BA2 7AY, UK.
| | - Eric B Holub
- School of Life Sciences, Warwick Crop Centre, University of Warwick, Wellesbourne, CV35 9EF, UK
| | - Jonathan D G Jones
- The Sainsbury Laboratory, University of East Anglia, Norwich, NR4 7UH, UK
| | - Anand Kumar Tewari
- Department of Plant Pathology, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - Neeraj Shrivastava
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201303, India
| | - Abha Agnihotri
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201303, India.
| | - Pankaj Sharma
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, Uttar Pradesh, 201303, India.
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Ren W, Jiang Z, Zhang M, Kong L, Zhang H, Liu Y, Fu Q, Ma W. The chloroplast genome of Salix floderusii and characterization of chloroplast regulatory elements. FRONTIERS IN PLANT SCIENCE 2022; 13:987443. [PMID: 36092427 PMCID: PMC9459086 DOI: 10.3389/fpls.2022.987443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Salix floderusii is a rare alpine tree species in the Salix genus. Unfortunately, no extensive germplasm identification, molecular phylogeny, and chloroplast genomics of this plant have been conducted. We sequenced the chloroplast (cp) genome of S. floderusii for the first time using second-generation sequencing technology. The cp genome was 155,540 bp long, including a large single-copy region (LSC, 84,401 bp), a small single-copy region (SSC, 16,221 bp), and inverted repeat regions (IR, 54,918 bp). A total of 131 genes were identified, including 86 protein genes, 37 tRNA genes, and 8 rRNA genes. The S. floderusii cp genome contains 1 complement repeat, 24 forward repeats, 17 palindromic repeats, and 7 reverse repeats. Analysis of the IR borders showed that the IRa and IRb regions of S. floderusii and Salix caprea were shorter than those of Salix cinerea, which may affect plastome evolution. Furthermore, four highly variable regions were found, including the rpl22 coding region, psbM/trnD-GUC non-coding region, petA/psbJ non-coding region, and ycf1 coding region. These high variable regions can be used as candidate molecular markers and as a reference for identifying future Salix species. In addition, phylogenetic analysis indicated that the cp genome of S. floderusii is sister to Salix cupularis and belongs to the Subgenus Vetrix. Genes (Sf-trnI, Sf-PpsbA, aadA, Sf-TpsbA, Sf-trnA) obtained via cloning were inserted into the pBluescript II SK (+) to yield the cp expression vectors, which harbored the selectable marker gene aadA. The results of a spectinomycin resistance test indicated that the cp expression vector had been successfully constructed. Moreover, the aadA gene was efficiently expressed under the regulation of predicted regulatory elements. The present study provides a solid foundation for establishing subsequent S. floderusii cp transformation systems and developing strategies for the genetic improvement of S. floderusii.
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Affiliation(s)
- Weichao Ren
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Zhehui Jiang
- School of Forestry, Northeast Forestry University, Harbin, China
| | - Meiqi Zhang
- School of Forestry, Northeast Forestry University, Harbin, China
| | - Lingyang Kong
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Houliang Zhang
- Yichun Branch of Heilongjiang Academy of Forestry, Yichun, China
| | - Yunwei Liu
- Yichun Branch of Heilongjiang Academy of Forestry, Yichun, China
| | - Qifeng Fu
- Experimental Teaching and Training Center, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wei Ma
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
- Experimental Teaching and Training Center, Heilongjiang University of Chinese Medicine, Harbin, China
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Rascón-Cruz Q, González-Barriga CD, Iglesias-Figueroa BF, Trejo-Muñoz JC, Siqueiros-Cendón T, Sinagawa-García SR, Arévalo-Gallegos S, Espinoza-Sánchez EA. Plastid transformation: Advances and challenges for its implementation in agricultural crops. ELECTRON J BIOTECHN 2021. [DOI: 10.1016/j.ejbt.2021.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Plastid Transformation: How Does it Work? Can it Be Applied to Crops? What Can it Offer? Int J Mol Sci 2020; 21:ijms21144854. [PMID: 32659946 PMCID: PMC7402345 DOI: 10.3390/ijms21144854] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/04/2020] [Accepted: 07/05/2020] [Indexed: 12/31/2022] Open
Abstract
In recent years, plant genetic engineering has advanced agriculture in terms of crop improvement, stress and disease resistance, and pharmaceutical biosynthesis. Cells from land plants and algae contain three organelles that harbor DNA: the nucleus, plastid, and mitochondria. Although the most common approach for many plant species is the introduction of foreign DNA into the nucleus (nuclear transformation) via Agrobacterium- or biolistics-mediated delivery of transgenes, plastid transformation offers an alternative means for plant transformation. Since there are many copies of the chloroplast genome in each cell, higher levels of protein accumulation can often be achieved from transgenes inserted in the chloroplast genome compared to the nuclear genome. Chloroplasts are therefore becoming attractive hosts for the introduction of new agronomic traits, as well as for the biosynthesis of high-value pharmaceuticals, biomaterials and industrial enzymes. This review provides a comprehensive historical and biological perspective on plastid transformation, with a focus on current and emerging approaches such as the use of single-walled carbon nanotubes (SWNTs) as DNA delivery vehicles, overexpressing morphogenic regulators to enhance regeneration ability, applying genome editing techniques to accelerate double-stranded break formation, and reconsidering protoplasts as a viable material for plastid genome engineering, even in transformation-recalcitrant species.
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Okuzaki A, Tsuda M, Konagaya KI, Tabei Y. A novel strategy for promoting homoplasmic plastid transformant production using the barnase-barstar system. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2020; 37:223-232. [PMID: 32821230 PMCID: PMC7434676 DOI: 10.5511/plantbiotechnology.20.0503a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Plastid transformants form biofactories that are able to produce extra proteins in plastids when they are in a homoplasmic state. To date, plastid transformation has been reported in about twenty plant species; however, the production of homoplasmic plastid transformants is not always successful or easy. Heteroplasmic plants that contain wild-type plastids produce fewer target proteins and do not always successfully transfer transgenes to progeny. In order to promote the generation of homoplasmic plants, we developed a novel system using barnase-barster to eliminate wild-type plastids from heteroplasmic cells systematically. In this system, a chemically inducible cytotoxic barnase under a plastid transit signal was introduced into nuclear DNA and barster, which inhibits barnase, was integrated into plastid DNA with the primary selection markers aminoglycoside 3'-adenylyltransferase (aadA) and green fluorescence protein (GFP) gene. As expected, the expression of the plastid barnase was lethal to cells as seen in leaf segments, but barster expression in plastids rescued them. We then investigated the regeneration frequency of homoplasmic shoots from heteroplasmic leaf segments with or without barnase expression. The regeneration frequency of homoplasmic-like shoots expressing barnase-barster system was higher than that of shoots not expressing this. We expect that the application of this novel strategy for transformation of plastids will be supportive to generate homoplasmic plastid transformants in other plant species.
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Affiliation(s)
- Ayako Okuzaki
- National Institute of Agricultural Sciences (NIAS), 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Mai Tsuda
- National Institute of Agricultural Sciences (NIAS), 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Ken-ichi Konagaya
- National Institute of Agricultural Sciences (NIAS), 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Yutaka Tabei
- National Institute of Agricultural Sciences (NIAS), 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
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Arévalo-Gallegos S, Varela-Rodríguez H, Lugo-Aguilar H, Siqueiros-Cendón TS, Iglesias-Figueroa BF, Espinoza-Sánchez EA, Aguado-Santacruz GA, Rascón-Cruz Q. Transient expression of a green fluorescent protein in tobacco and maize chloroplast. ELECTRON J BIOTECHN 2020. [DOI: 10.1016/j.ejbt.2020.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Farooq N, Nawaz MA, Mukhtar Z, Ali I, Hundleby P, Ahmad N. Investigating the In Vitro Regeneration Potential of Commercial Cultivars of Brassica. PLANTS (BASEL, SWITZERLAND) 2019; 8:E558. [PMID: 31795525 PMCID: PMC6963692 DOI: 10.3390/plants8120558] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 11/24/2019] [Accepted: 11/26/2019] [Indexed: 01/11/2023]
Abstract
In vitro regeneration is a pre-requisite for developing transgenic plants through tissue culture-based genetic engineering approaches. Huge variations among different genotypes of the genus Brassica necessitate the identification of a set of regeneration conditions for a genotype, which can be reliably used in transformation experiments. In this study, we evaluated the morphogenesis potential of four commercial cultivars (Faisal canola, Punjab canola, Aari canola, Nifa Gold) and one model, Westar, from four different explants namely cotyledons, hypocotyls, petioles and roots on three different Brassica regeneration protocols, BRP-I, -II and -III. The regeneration efficiency was observed in the range of 6-73%, 4-79.3%, 0-50.6%, and 0-42.6% from cotyledons, petioles, hypocotyls and roots, respectively, whereas, the regeneration response in terms of average shoots per explant was found to be 0.76-10.9, 0.2-3.2, 0-3.4 and 0-2.7 from these explants. Of the commercial varieties tested, almost all varieties showed poorer regeneration than Westar except Aari canola. In comparison to Westar, its regeneration frequency from cotyledons was up to 7.5-fold higher on BRP-I, while it produced up to 21.9-fold more shoots per explant. Our data show that the explant has strong influence on the regeneration response, ranging from 24% to 92%. While the growth of commercial cultivars was least affected by the regeneration conditions provided, the effect on Westar was twice that of the commercial cultivars. After determining the optimal explant type and regeneration conditions, we also determined the minimum kanamycin concentration levels required to selectively inhibit the growth of untransformed cells for these cultivars. Regenerated shoots of Aari canola could be successfully grown to maturity within 16-18 weeks, with no altered phenotype noted and normal seed yields obtained. Therefore, the commercial variety, Aari canola, could be a good candidate for future genetic transformation studies.
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Affiliation(s)
- Nisma Farooq
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
| | - Muhammad Asif Nawaz
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
| | - Zahid Mukhtar
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
| | - Iftikhar Ali
- Nuclear Institute for Agriculture and Biology, Faisalabad 38000, Pakistan
| | - Penny Hundleby
- Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Niaz Ahmad
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
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Kota S, Lakkam R, Kasula K, Narra M, Qiang H, Rao Allini V, Zanmin H, Abbagani S. Construction of a species-specific vector for improved plastid transformation efficiency in Capsicum annuum L. 3 Biotech 2019; 9:226. [PMID: 31139541 DOI: 10.1007/s13205-019-1747-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/08/2019] [Indexed: 11/26/2022] Open
Abstract
In the present study, we focused on designing a species-specific chloroplast vector for Capsicum annuum L. and finding out its transformation efficiency compared to a heterologous vector. The plastid transformation vector (CaIA) was designed to target homologous regions trnA and trnI of IR region. A selectable marker gene aadA, whose expression is controlled by psbA promoter and terminator, was cloned between two flanking regions. A heterologous vector pRB95, which targets trnfM and trnG of LSC region along with aadA driven by rrn promoter and psbA terminator, was also used for developing plastid transformation in Capsicum. Cotyledonary explants were bombarded with stabilized biolistic parameters: 900 psi pressure and 9 cm flight distance, and optimized regeneration protocol (0.7 mg/L TDZ + 0.2 mg/L IAA) was used to obtain transplastomic lines on selection medium (300 mg/L spectinomycin). The aadA integration and homoplasmy were confirmed by obtaining 1.2 and 3.7 kb amplicons in CaIA transformants and subsequently verified by Southern blotting, whereas in pRB95 transformants, integration was confirmed by PCR with 1.45 kb and 255 bp amplicons corresponding to aadA integration and flanks, respectively. The transformation efficiencies attained with two plastid vectors were found to be 20%, i.e., 10 transplastomic lines in 50 bombarded plates, with CaIA and 2%, i.e., 1 transplastomic line in 50 bombarded plates, with heterologous pRB95, respectively.
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Affiliation(s)
- Srinivas Kota
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
- 2Institute of Genetics and Developmental Biology, Beijing, China
| | - Raghuvardhan Lakkam
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Kirnamayee Kasula
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
- 3Department of Biotechnology, Telangana University, Nizamabad, Telangana 503322 India
| | - Muralikrishna Narra
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Hao Qiang
- 2Institute of Genetics and Developmental Biology, Beijing, China
| | - V Rao Allini
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Hu Zanmin
- 2Institute of Genetics and Developmental Biology, Beijing, China
| | - Sadanandam Abbagani
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
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Genetic Modification for Wheat Improvement: From Transgenesis to Genome Editing. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6216304. [PMID: 30956982 PMCID: PMC6431451 DOI: 10.1155/2019/6216304] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 02/08/2019] [Accepted: 02/21/2019] [Indexed: 12/12/2022]
Abstract
To feed the growing human population, global wheat yields should increase to approximately 5 tonnes per ha from the current 3.3 tonnes by 2050. To reach this goal, existing breeding practices must be complemented with new techniques built upon recent gains from wheat genome sequencing, and the accumulated knowledge of genetic determinants underlying the agricultural traits responsible for crop yield and quality. In this review we primarily focus on the tools and techniques available for accessing gene functions which lead to clear phenotypes in wheat. We provide a view of the development of wheat transformation techniques from a historical perspective, and summarize how techniques have been adapted to obtain gain-of-function phenotypes by gene overexpression, loss-of-function phenotypes by expressing antisense RNAs (RNA interference or RNAi), and most recently the manipulation of gene structure and expression using site-specific nucleases, such as CRISPR/Cas9, for genome editing. The review summarizes recent successes in the application of wheat genetic manipulation to increase yield, improve nutritional and health-promoting qualities in wheat, and enhance the crop's resistance to various biotic and abiotic stresses.
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Narra M, Kota S, Ellendula R, Kasula K, Kalva BK, Sadanandam A. Efficient chloroplast transformation in Scoparia dulcis L. using pFaadAII vector. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s40502-018-0392-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Narra M, Kota S, Velivela Y, Ellendula R, Allini VR, Abbagani S. Construction of chloroplast transformation vector and its functional evaluation in Momordica charantia L. 3 Biotech 2018; 8:140. [PMID: 29484279 PMCID: PMC5817051 DOI: 10.1007/s13205-018-1160-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 02/06/2018] [Indexed: 12/20/2022] Open
Abstract
Chloroplast transformation vectors require an expression cassette flanked by homologous plastid sequences to drive plastome recombination. The rrn16-rrn23 plastome region was selected and using this region, a new species-specific plastid transformation vector CuIA was developed with pKS+II as a backbone by inserting the rrn16-trnI and trnA-rrn23 sequences from Cucumis sativus L. An independent expression cassette with aadA gene encoding aminoglycoside 3'-adenylyltransferase with psbA controlling elements is added into the trnI-trnA intergenic region that confers resistance to spectinomycin. An efficient plastid transformation in bitter melon (Momordica charantia L.) was achieved by bombardment of petiole segments. The frequency of transplastomic plants yielded using standardized biolistic parameters with CuIA vector was two per 15 bombarded plates, each containing 20 petiole explants. Integration of aadA gene was verified by PCR analysis in transplastomes. Transplastomic technology developed may be a novel approach for high level expression of pharmaceutical traits.
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Affiliation(s)
| | - Srinivas Kota
- Department of Biotechnology, Kakatiya University, Warangal, 506009 India
| | | | - Raghu Ellendula
- Department of Biotechnology, Kakatiya University, Warangal, 506009 India
| | - V. Rao Allini
- Department of Biotechnology, Kakatiya University, Warangal, 506009 India
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Adem M, Beyene D, Feyissa T. Recent achievements obtained by chloroplast transformation. PLANT METHODS 2017; 13:30. [PMID: 28428810 PMCID: PMC5395794 DOI: 10.1186/s13007-017-0179-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/09/2017] [Indexed: 05/22/2023]
Abstract
Chloroplasts play a great role for sustained wellbeing of life on the planet. They have the power and raw materials that can be used as sophisticated biological factories. They are rich in energy as they have lots of pigment-protein complexes capable of collecting sunlight, in sugar produced by photosynthesis and in minerals imported from the plant cell. Chloroplast genome transformation offers multiple advantages over nuclear genome which among others, include: integration of the transgene via homologus recombination that enables to eliminate gene silencing and position effect, higher level of transgene expression resulting into higher accumulations of foreign proteins, and significant reduction in environmental dispersion of the transgene due to maternal inheritance which helps to minimize the major critic of plant genetic engineering. Chloroplast genetic engineering has made fruit full progresses in the development of plants resistance to various stresses, phytoremediation of toxic metals, and production of vaccine antigens, biopharmaceuticals, biofuels, biomaterials and industrial enzymes. Although successful results have been achieved, there are still difficulties impeding full potential exploitation and expansion of chloroplast transformation technology to economical plants. These include, lack of species specific regulatory sequences, problem of selection and shoot regeneration, and massive expression of foreign genes resulting in phenotypic alterations of transplastomic plants. The aim of this review is to critically recapitulate the latest development of chloroplast transformation with special focus on the different traits of economic interest.
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Affiliation(s)
- Muhamed Adem
- Department of Microbial, Cellular and Molecular Biology, College of Natural and Computational Sciences, Addis Ababa University, P.O. Box. 1176, Addis Ababa, Ethiopia
- Department of Forestry, School of Agriculture and Natural Resources, Madawalabu University, P.O. Box 247, Bale Robe, Oromiya Ethiopia
| | - Dereje Beyene
- Department of Microbial, Cellular and Molecular Biology, College of Natural and Computational Sciences, Addis Ababa University, P.O. Box. 1176, Addis Ababa, Ethiopia
| | - Tileye Feyissa
- Department of Microbial, Cellular and Molecular Biology, College of Natural and Computational Sciences, Addis Ababa University, P.O. Box. 1176, Addis Ababa, Ethiopia
- Institute of Biotechnology, College of Natural and Computational Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Muralikrishna N, Srinivas K, Kumar KB, Sadanandam A. Stable plastid transformation in Scoparia dulcis L. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2016; 22:575-581. [PMID: 27924130 PMCID: PMC5120043 DOI: 10.1007/s12298-016-0386-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 09/28/2016] [Accepted: 10/10/2016] [Indexed: 05/16/2023]
Abstract
In the present investigation we report stable plastid transformation in Scoparia dulcis L., a versatile medicinal herb via particle gun method. The vector KNTc, harbouring aadA as a selectable marker and egfp as a reporter gene which were under the control of synthetic promoter pNG1014a, targets inverted repeats, trnR/trnN of the plastid genome. By use of this heterologous vector, recovery of transplastomic lines with suitable selection protocol have been successfully established with overall efficiency of two transgenic lines for 25 bombarded leaf explants. PCR and Southern blot analysis demonstrated stable integration of foreign gene into the target sequences. The results represent a significant advancement of the plastid transformation technology in medicinal plants, which relevantly implements a change over in enhancing and regulating of certain metabolic pathways.
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Affiliation(s)
| | - Kota Srinivas
- Department of Biotechnology, Kakatiya University, Warangal, 506009 India
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Kouakou TEC, Abou BK, N rsquo nan Alla O, S eacute ry GEB, Monique D, Lucien L. In vitro transformation of pearl millet (Pennisetum glaucum (L). R. BR.): Selection of chlorsulfuron-resistant plants and long term expression of the gus gene under the control of the emu promoter. ACTA ACUST UNITED AC 2015. [DOI: 10.5897/ajb2015.14983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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17
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Wu Z, Tembrock LR, Ge S. Are differences in genomic data sets due to true biological variants or errors in genome assembly: an example from two chloroplast genomes. PLoS One 2015; 10:e0118019. [PMID: 25658309 PMCID: PMC4320078 DOI: 10.1371/journal.pone.0118019] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 01/07/2015] [Indexed: 01/01/2023] Open
Abstract
DNA sequencing has been revolutionized by the development of high-throughput sequencing technologies. Plummeting costs and the massive throughput capacities of second and third generation sequencing platforms have transformed many fields of biological research. Concurrently, new data processing pipelines made rapid de novo genome assemblies possible. However, high quality data are critically important for all investigations in the genomic era. We used chloroplast genomes of one Oryza species (O. australiensis) to compare differences in sequence quality: one genome (GU592209) was obtained through Illumina sequencing and reference-guided assembly and the other genome (KJ830774) was obtained via target enrichment libraries and shotgun sequencing. Based on the whole genome alignment, GU592209 was more similar to the reference genome (O. sativa: AY522330) with 99.2% sequence identity (SI value) compared with the 98.8% SI values in the KJ830774 genome; whereas the opposite result was obtained when the SI values in coding and noncoding regions of GU592209 and KJ830774 were compared. Additionally, the junctions of two single copies and repeat copies in the chloroplast genome exhibited differences. Phylogenetic analyses were conducted using these sequences, and the different data sets yielded dissimilar topologies: phylogenetic replacements of the two individuals were remarkably different based on whole genome sequencing or SNP data and insertions and deletions (indels) data. Thus, we concluded that the genomic composition of GU592209 was heterogeneous in coding and non-coding regions. These findings should impel biologists to carefully consider the quality of sequencing and assembly when working with next-generation data.
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Affiliation(s)
- Zhiqiang Wu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- Department of Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Luke R. Tembrock
- Department of Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Song Ge
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China
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18
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Lakshmi PS, Verma D, Yang X, Lloyd B, Daniell H. Low cost tuberculosis vaccine antigens in capsules: expression in chloroplasts, bio-encapsulation, stability and functional evaluation in vitro. PLoS One 2013; 8:e54708. [PMID: 23355891 PMCID: PMC3552857 DOI: 10.1371/journal.pone.0054708] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 12/18/2012] [Indexed: 11/19/2022] Open
Abstract
Tuberculosis (TB) caused by Mycobacterium tuberculosis is one of the leading fatal infectious diseases. The development of TB vaccines has been recognized as a major public health priority by the World Health Organization. In this study, three candidate antigens, ESAT-6 (6 kDa early secretory antigenic target) and Mtb72F (a fusion polyprotein from two TB antigens, Mtb32 and Mtb39) fused with cholera toxin B-subunit (CTB) and LipY (a cell wall protein) were expressed in tobacco and/or lettuce chloroplasts to facilitate bioencapsulation/oral delivery. Site-specific transgene integration into the chloroplast genome was confirmed by Southern blot analysis. In transplastomic leaves, CTB fusion proteins existed in soluble monomeric or multimeric forms of expected sizes and their expression levels varied depending upon the developmental stage and time of leaf harvest, with the highest-level of accumulation in mature leaves harvested at 6PM. The CTB-ESAT6 and CTB-Mtb72F expression levels reached up to 7.5% and 1.2% of total soluble protein respectively in mature tobacco leaves. Transplastomic CTB-ESAT6 lettuce plants accumulated up to 0.75% of total leaf protein. Western blot analysis of lyophilized lettuce leaves stored at room temperature for up to six months showed that the CTB-ESAT6 fusion protein was stable and preserved proper folding, disulfide bonds and assembly into pentamers for prolonged periods. Also, antigen concentration per gram of leaf tissue was increased 22 fold after lyophilization. Hemolysis assay with purified CTB-ESAT6 protein showed partial hemolysis of red blood cells and confirmed functionality of the ESAT-6 antigen. GM1-binding assay demonstrated that the CTB-ESAT6 fusion protein formed pentamers to bind with the GM1-ganglioside receptor. The expression of functional Mycobacterium tuberculosis antigens in transplastomic plants should facilitate development of a cost-effective and orally deliverable TB booster vaccine with potential for long-term storage at room temperature. To our knowledge, this is the first report of expression of TB vaccine antigens in chloroplasts.
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Affiliation(s)
- Priya Saikumar Lakshmi
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Dheeraj Verma
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Xiangdong Yang
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Bethany Lloyd
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Henry Daniell
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
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19
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20
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Suitability of non-lethal marker and marker-free systems for development of transgenic crop plants: Present status and future prospects. Biotechnol Adv 2011; 29:703-14. [DOI: 10.1016/j.biotechadv.2011.05.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 05/30/2011] [Accepted: 05/31/2011] [Indexed: 12/16/2022]
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Clarke JL, Daniell H. Plastid biotechnology for crop production: present status and future perspectives. PLANT MOLECULAR BIOLOGY 2011; 76:211-20. [PMID: 21437683 PMCID: PMC3482339 DOI: 10.1007/s11103-011-9767-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Accepted: 03/07/2011] [Indexed: 05/19/2023]
Abstract
The world population is expected to reach an estimated 9.2 billion by 2050. Therefore, food production globally has to increase by 70% in order to feed the world, while total arable land, which has reached its maximal utilization, may even decrease. Moreover, climate change adds yet another challenge to global food security. In order to feed the world in 2050, biotechnological advances in modern agriculture are essential. Plant genetic engineering, which has created a new wave of global crop production after the first green revolution, will continue to play an important role in modern agriculture to meet these challenges. Plastid genetic engineering, with several unique advantages including transgene containment, has made significant progress in the last two decades in various biotechnology applications including development of crops with high levels of resistance to insects, bacterial, fungal and viral diseases, different types of herbicides, drought, salt and cold tolerance, cytoplasmic male sterility, metabolic engineering, phytoremediation of toxic metals and production of many vaccine antigens, biopharmaceuticals and biofuels. However, useful traits should be engineered via chloroplast genomes of several major crops. This review provides insight into the current state of the art of plastid engineering in relation to agricultural production, especially for engineering agronomic traits. Understanding the bottleneck of this technology and challenges for improvement of major crops in a changing climate are discussed.
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Affiliation(s)
- Jihong Liu Clarke
- Plant Health and Protection Division, Bioforsk- Norwegian, Institute for Agricultural and Environmental Research, Hoegskoleveien 7, 1432 Aas, Norway
| | - Henry Daniell
- Department of Molecular Biology and Microbiology, College of Medicine, University of Central Florida, 336 Biomolecular Science Building, Orlando, FL 32816-2364, USA
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Rogalski M, Carrer H. Engineering plastid fatty acid biosynthesis to improve food quality and biofuel production in higher plants. PLANT BIOTECHNOLOGY JOURNAL 2011; 9:554-64. [PMID: 21535359 DOI: 10.1111/j.1467-7652.2011.00621.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The ability to manipulate plant fatty acid biosynthesis by using new biotechnological approaches has allowed the production of transgenic plants with unusual fatty acid profile and increased oil content. This review focuses on the production of very long chain polyunsaturated fatty acids (VLCPUFAs) and the increase in oil content in plants using molecular biology tools. Evidences suggest that regular consumption of food rich in VLCPUFAs has multiple positive health benefits. Alternative sources of these nutritional fatty acids are found in cold-water fishes. However, fish stocks are in severe decline because of decades of overfishing, and also fish oils can be contaminated by the accumulation of toxic compounds. Recently, there is also an increase in oilseed use for the production of biofuels. This tendency is partly associated with the rapidly rising costs of petroleum, increased concern about the environmental impact of fossil oil and the attractive need to develop renewable sources of fuel. In contrast to this scenario, oil derived from crop plants is normally contaminant free and less environmentally aggressive. Genetic engineering of the plastid genome (plastome) offers a number of attractive advantages, including high-level foreign protein expression, marker-gene excision and transgene containment because of maternal inheritance of plastid genome in most crops. Here, we describe the possibility to improve fatty acid biosynthesis in plastids, production of new fatty acids and increase their content in plants by genetic engineering of plastid fatty acid biosynthesis via plastid transformation.
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Affiliation(s)
- Marcelo Rogalski
- Departamento de Ciências Biológicas, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba-SP. 13418-900, Brazil
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Lutz KA, Azhagiri A, Maliga P. Transplastomics in Arabidopsis: progress toward developing an efficient method. Methods Mol Biol 2011; 774:133-47. [PMID: 21822837 DOI: 10.1007/978-1-61779-234-2_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Protocols developed for plastome engineering in Nicotiana tabacum rely on biolistic delivery of the transforming DNA to chloroplasts in intact leaf tissue; integration of the foreign DNA into the plastid genome by homologous recombination via flanking plastid DNA (ptDNA) targeting regions; and gradual dilution of non-transformed ptDNA during cultivation in vitro. Plastid transformation in Arabidopsis was obtained by combining the tobacco leaf transformation protocol with Arabidopsis-specific tissue culture and plant regeneration protocols. Because the leaf cells in Arabidopsis are polyploid, this protocol yielded sterile plants. Meristematic cells in a shoot apex or cells of a developing embryo are diploid. Therefore, we developed a regulated embryogenic root culture system that will generate diploid tissue for plastid transformation. This embryogenic culture system is created by steroid-inducible expression of the BABY BOOM transcription factor. Plastid transformation in Arabidopsis will enable the probing of plastid gene function, and the characterization of posttranscriptional mechanisms of gene regulation and the regulatory interactions of plastid and nuclear genes.
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Affiliation(s)
- Kerry Ann Lutz
- Waksman Institute of Microbiology Rutgers, The State University of New Jersey, Piscataway, NJ, USA
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Wani SH, Haider N, Kumar H, Singh N. Plant plastid engineering. Curr Genomics 2010; 11:500-12. [PMID: 21532834 PMCID: PMC3048312 DOI: 10.2174/138920210793175912] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Revised: 07/06/2010] [Accepted: 07/26/2010] [Indexed: 01/28/2023] Open
Abstract
Genetic material in plants is distributed into nucleus, plastids and mitochondria. Plastid has a central role of carrying out photosynthesis in plant cells. Plastid transformation is becoming more popular and an alternative to nuclear gene transformation because of various advantages like high protein levels, the feasibility of expressing multiple proteins from polycistronic mRNAs, and gene containment through the lack of pollen transmission. Recently, much progress in plastid engineering has been made. In addition to model plant tobacco, many transplastomic crop plants have been generated which possess higher resistance to biotic and abiotic stresses and molecular pharming. In this mini review, we will discuss the features of the plastid DNA and advantages of plastid transformation. We will also present some examples of transplastomic plants developed so far through plastid engineering, and the various applications of plastid transformation.
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Affiliation(s)
- Shabir H. Wani
- Biotechnology Laboratory, Central Institute of Temperate Horticulture, Rangreth, Srinagar, (J&K), 190 007, India
| | - Nadia Haider
- Department of Molecular Biology and Biotechnology, AECS, Damascus P. O. Box 6091, Syria
| | - Hitesh Kumar
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141 004, India
| | - N.B. Singh
- Department of Plant Breeding and Genetics, COA, Central Agricultural University, Imphal, Manipur, 795 004, India
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Cardi T, Lenzi P, Maliga P. Chloroplasts as expression platforms for plant-produced vaccines. Expert Rev Vaccines 2010; 9:893-911. [PMID: 20673012 DOI: 10.1586/erv.10.78] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Production of recombinant subunit vaccines from genes incorporated in the plastid genome is advantageous because of the attainable expression level due to high transgene copy number and the absence of gene silencing; biocontainment as a consequence of maternal inheritance of plastids and no transgene presence in the pollen; and expression of multiple transgenes in prokaryotic-like operons. We discuss the core technology of plastid transformation in Chlamydomonas reinhardtii, a unicellular alga, and Nicotiana tabacum (tobacco), a flowering plant species, and demonstrate the utility of the technology for the production of recombinant vaccine antigens.
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Affiliation(s)
- Teodoro Cardi
- CNR-IGV, Institute of Plant Genetics, Portici, Italy.
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