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Masani MYA, Norfaezah J, Bahariah B, Fizree MDPMAA, Sulaiman WNSW, Shaharuddin NA, Rasid OA, Parveez GKA. Towards DNA-free CRISPR/Cas9 genome editing for sustainable oil palm improvement. 3 Biotech 2024; 14:166. [PMID: 38817736 PMCID: PMC11133284 DOI: 10.1007/s13205-024-04010-w] [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: 01/04/2024] [Accepted: 05/18/2024] [Indexed: 06/01/2024] Open
Abstract
The CRISPR/Cas9 genome editing system has been in the spotlight compared to programmable nucleases such as ZFNs and TALENs due to its simplicity, versatility, and high efficiency. CRISPR/Cas9 has revolutionized plant genetic engineering and is broadly used to edit various plants' genomes, including those transformation-recalcitrant species such as oil palm. This review will comprehensively present the CRISPR-Cas9 system's brief history and underlying mechanisms. We then highlighted the establishment of the CRISPR/Cas9 system in plants with an emphasis on the strategies of highly efficient guide RNA design, the establishment of various CRISPR/Cas9 vector systems, approaches of multiplex editing, methods of transformation for stable and transient techniques, available methods for detecting and analyzing mutations, which have been applied and could be adopted for CRISPR/Cas9 genome editing in oil palm. In addition, we also provide insight into the strategy of DNA-free genome editing and its potential application in oil palm.
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Affiliation(s)
- Mat Yunus Abdul Masani
- Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor Malaysia
| | - Jamaludin Norfaezah
- Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor Malaysia
| | - Bohari Bahariah
- Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor Malaysia
| | | | | | - Noor Azmi Shaharuddin
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, UPM, 43400 Serdang, Malaysia
| | - Omar Abdul Rasid
- Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor Malaysia
| | - Ghulam Kadir Ahmad Parveez
- Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor Malaysia
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Li C, Iqbal MA. Leveraging the sugarcane CRISPR/Cas9 technique for genetic improvement of non-cultivated grasses. FRONTIERS IN PLANT SCIENCE 2024; 15:1369416. [PMID: 38601306 PMCID: PMC11004347 DOI: 10.3389/fpls.2024.1369416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/11/2024] [Indexed: 04/12/2024]
Abstract
Under changing climatic scenarios, grassland conservation and development have become imperative to impart functional sustainability to their ecosystem services. These goals could be effectively and efficiently achieved with targeted genetic improvement of native grass species. To the best of our literature search, very scant research findings are available pertaining to gene editing of non-cultivated grass species (switch grass, wild sugarcane, Prairie cordgrass, Bermuda grass, Chinese silver grass, etc.) prevalent in natural and semi-natural grasslands. Thus, to explore this novel research aspect, this study purposes that gene editing techniques employed for improvement of cultivated grasses especially sugarcane might be used for non-cultivated grasses as well. Our hypothesis behind suggesting sugarcane as a model crop for genetic improvement of non-cultivated grasses is the intricacy of gene editing owing to polyploidy and aneuploidy compared to other cultivated grasses (rice, wheat, barley, maize, etc.). Another reason is that genome editing protocols in sugarcane (x = 10-13) have been developed and optimized, taking into consideration the high level of genetic redundancy. Thus, as per our knowledge, this review is the first study that objectively evaluates the concept and functioning of the CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9 technique in sugarcane regarding high versatility, target specificity, efficiency, design simplicity, and multiplexing capacity in order to explore novel research perspectives for gene editing of non-cultivated grasses against biotic and abiotic stresses. Additionally, pronounced challenges confronting sugarcane gene editing have resulted in the development of different variants (Cas9, Cas12a, Cas12b, and SpRY) of the CRISPR tool, whose technicalities have also been critically assessed. Moreover, different limitations of this technique that could emerge during gene editing of non-cultivated grass species have also been highlighted.
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Affiliation(s)
- Chunjia Li
- National Key Laboratory for Biological Breeding of Tropical Crops, Kunming, Yunnan, China
- Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences/Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan, Yunnan, China
| | - Muhammad Aamir Iqbal
- National Key Laboratory for Biological Breeding of Tropical Crops, Kunming, Yunnan, China
- Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences/Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan, Yunnan, China
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Wu J, Zhang Y, Li F, Zhang X, Ye J, Wei T, Li Z, Tao X, Cui F, Wang X, Zhang L, Yan F, Li S, Liu Y, Li D, Zhou X, Li Y. Plant virology in the 21st century in China: Recent advances and future directions. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:579-622. [PMID: 37924266 DOI: 10.1111/jipb.13580] [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: 09/12/2023] [Accepted: 11/02/2023] [Indexed: 11/06/2023]
Abstract
Plant viruses are a group of intracellular pathogens that persistently threaten global food security. Significant advances in plant virology have been achieved by Chinese scientists over the last 20 years, including basic research and technologies for preventing and controlling plant viral diseases. Here, we review these milestones and advances, including the identification of new crop-infecting viruses, dissection of pathogenic mechanisms of multiple viruses, examination of multilayered interactions among viruses, their host plants, and virus-transmitting arthropod vectors, and in-depth interrogation of plant-encoded resistance and susceptibility determinants. Notably, various plant virus-based vectors have also been successfully developed for gene function studies and target gene expression in plants. We also recommend future plant virology studies in China.
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Affiliation(s)
- Jianguo Wu
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Vector-borne Virus Research Center, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yongliang Zhang
- State Key Laboratory of Plant Environmental Resilience and Ministry of Agriculture Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Fangfang Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiaoming Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian Ye
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Taiyun Wei
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Vector-borne Virus Research Center, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Zhenghe Li
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Xiaorong Tao
- Department of Plant Pathology, The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Cui
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xianbing Wang
- State Key Laboratory of Plant Environmental Resilience and Ministry of Agriculture Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Lili Zhang
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Fei Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Shifang Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yule Liu
- MOE Key Laboratory of Bioinformatics, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Dawei Li
- State Key Laboratory of Plant Environmental Resilience and Ministry of Agriculture Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xueping Zhou
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Yi Li
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Vector-borne Virus Research Center, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing, 100871, China
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Rogo U, Simoni S, Fambrini M, Giordani T, Pugliesi C, Mascagni F. Future-Proofing Agriculture: De Novo Domestication for Sustainable and Resilient Crops. Int J Mol Sci 2024; 25:2374. [PMID: 38397047 PMCID: PMC10888583 DOI: 10.3390/ijms25042374] [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] [Received: 01/16/2024] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
The worldwide agricultural system confronts a significant challenge represented by the increasing demand for food in the face of a growing global population. This challenge is exacerbated by a reduction in cultivable land and the adverse effects of climate change on crop yield quantity and quality. Breeders actively embrace cutting-edge omics technologies to pursue resilient genotypes in response to these pressing issues. In this global context, new breeding techniques (NBTs) are emerging as the future of agriculture, offering a solution to introduce resilient crops that can ensure food security, particularly against challenging climate events. Indeed, the search for domestication genes as well as the genetic modification of these loci in wild species using genome editing tools are crucial steps in carrying out de novo domestication of wild plants without compromising their genetic background. Current knowledge allows us to take different paths from those taken by early Neolithic farmers, where crop domestication has opposed natural selection. In this process traits and alleles negatively correlated with high resource environment performance are probably eradicated through artificial selection, while others may have been lost randomly due to domestication and genetic bottlenecks. Thus, domestication led to highly productive plants with little genetic diversity, owing to the loss of valuable alleles that had evolved to tolerate biotic and abiotic stresses. Recent technological advances have increased the feasibility of de novo domestication of wild plants as a promising approach for crafting optimal crops while ensuring food security and using a more sustainable, low-input agriculture. Here, we explore what crucial domestication genes are, coupled with the advancement of technologies enabling the precise manipulation of target sequences, pointing out de novo domestication as a promising application for future crop development.
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Affiliation(s)
| | | | | | | | - Claudio Pugliesi
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Via del Borghetto, 80-56124 Pisa, Italy; (U.R.); (S.S.); (M.F.); (T.G.); (F.M.)
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Divya K, Thangaraj M, Krishna Radhika N. CRISPR/Cas9: an advanced platform for root and tuber crops improvement. Front Genome Ed 2024; 5:1242510. [PMID: 38312197 PMCID: PMC10836405 DOI: 10.3389/fgeed.2023.1242510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 12/26/2023] [Indexed: 02/06/2024] Open
Abstract
Root and tuber crops (RTCs), which include cassava, potato, sweet potato, and yams, principally function as staple crops for a considerable fraction of the world population, in addition to their diverse applications in nutrition, industry, and bioenergy sectors. Even then, RTCs are an underutilized group considering their potential as industrial raw material. Complexities in conventional RTC improvement programs curb the extensive exploitation of the potentials of this group of crop species for food, energy production, value addition, and sustainable development. Now, with the advent of whole-genome sequencing, sufficient sequence data are available for cassava, sweet potato, and potato. These genomic resources provide enormous scope for the improvement of tuber crops, to make them better suited for agronomic and industrial applications. There has been remarkable progress in RTC improvement through the deployment of new strategies like gene editing over the last decade. This review brings out the major areas where CRISPR/Cas technology has improved tuber crops. Strategies for genetic transformation of RTCs with CRISPR/Cas9 constructs and regeneration of edited lines and the bottlenecks encountered in their establishment are also discussed. Certain attributes of tuber crops requiring focus in future research along with putative editing targets are also indicated. Altogether, this review provides a comprehensive account of developments achieved, future lines of research, bottlenecks, and major experimental concerns regarding the establishment of CRISPR/Cas9-based gene editing in RTCs.
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Affiliation(s)
- K Divya
- ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India
| | | | - N Krishna Radhika
- ICAR-Central Tuber Crops Research Institute, Thiruvananthapuram, India
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6
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Nagalakshmi U, Meier N, Dinesh-Kumar SP. Virus-Induced Heritable Gene Editing in Plants. Methods Mol Biol 2024; 2724:273-288. [PMID: 37987913 DOI: 10.1007/978-1-0716-3485-1_20] [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: 11/22/2023]
Abstract
Gene editing using clustered, regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated (Cas) nuclease is an excellent tool for assessing gene function in plants. However, delivery of CRISPR/Cas-editing components into plant cells is still a major bottleneck and requires tissue culture-based approaches and regeneration of plants. To overcome this limitation, several plant viral vectors have recently been engineered to deliver single-guide RNA (sgRNA) targets into SpCas9-expressing plants. Here, we describe an optimized, step-by-step protocol based on the tobacco rattle virus (TRV)-based vector system to deliver sgRNAs fused to mobile tRNA sequences for efficient heritable editing in Nicotiana benthamiana and Arabidopsis thaliana model systems. The protocol described here could be adopted to study the function of any gene of interest.
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Affiliation(s)
- Ugrappa Nagalakshmi
- Department of Plant Biology and The Genome Center, College of Biological Sciences, University of California, Davis, Davis, CA, USA.
| | - Nathan Meier
- Department of Plant Biology and The Genome Center, College of Biological Sciences, University of California, Davis, Davis, CA, USA
| | - Savithramma P Dinesh-Kumar
- Department of Plant Biology and The Genome Center, College of Biological Sciences, University of California, Davis, Davis, CA, USA.
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Shahriari Z, Su X, Zheng K, Zhang Z. Advances and Prospects of Virus-Resistant Breeding in Tomatoes. Int J Mol Sci 2023; 24:15448. [PMID: 37895127 PMCID: PMC10607384 DOI: 10.3390/ijms242015448] [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: 08/01/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Plant viruses are the main pathogens which cause significant quality and yield losses in tomato crops. The important viruses that infect tomatoes worldwide belong to five genera: Begomovirus, Orthotospovirus, Tobamovirus, Potyvirus, and Crinivirus. Tomato resistance genes against viruses, including Ty gene resistance against begomoviruses, Sw gene resistance against orthotospoviruses, Tm gene resistance against tobamoviruses, and Pot 1 gene resistance against potyviruses, have been identified from wild germplasm and introduced into cultivated cultivars via hybrid breeding. However, these resistance genes mainly exhibit qualitative resistance mediated by single genes, which cannot protect against virus mutations, recombination, mixed-infection, or emerging viruses, thus posing a great challenge to tomato antiviral breeding. Based on the epidemic characteristics of tomato viruses, we propose that future studies on tomato virus resistance breeding should focus on rapidly, safely, and efficiently creating broad-spectrum germplasm materials resistant to multiple viruses. Accordingly, we summarized and analyzed the advantages and characteristics of the three tomato antiviral breeding strategies, including marker-assisted selection (MAS)-based hybrid breeding, RNA interference (RNAi)-based transgenic breeding, and CRISPR/Cas-based gene editing. Finally, we highlighted the challenges and provided suggestions for improving tomato antiviral breeding in the future using the three breeding strategies.
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Affiliation(s)
- Zolfaghar Shahriari
- Biotechnology and Germplasm Resources Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Seed Laboratory, 2238# Beijing Rd, Panlong District, Kunming 650205, China; (Z.S.); (X.S.)
- Crop and Horticultural Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz 617-71555, Iran
| | - Xiaoxia Su
- Biotechnology and Germplasm Resources Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Seed Laboratory, 2238# Beijing Rd, Panlong District, Kunming 650205, China; (Z.S.); (X.S.)
| | - Kuanyu Zheng
- Biotechnology and Germplasm Resources Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Seed Laboratory, 2238# Beijing Rd, Panlong District, Kunming 650205, China; (Z.S.); (X.S.)
| | - Zhongkai Zhang
- Biotechnology and Germplasm Resources Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Seed Laboratory, 2238# Beijing Rd, Panlong District, Kunming 650205, China; (Z.S.); (X.S.)
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Ali A, Zafar MM, Farooq Z, Ahmed SR, Ijaz A, Anwar Z, Abbas H, Tariq MS, Tariq H, Mustafa M, Bajwa MH, Shaukat F, Razzaq A, Maozhi R. Breakthrough in CRISPR/Cas system: Current and future directions and challenges. Biotechnol J 2023; 18:e2200642. [PMID: 37166088 DOI: 10.1002/biot.202200642] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/12/2023]
Abstract
Targeted genome editing (GE) technology has brought a significant revolution in fictional genomic research and given hope to plant scientists to develop desirable varieties. This technology involves inducing site-specific DNA perturbations that can be repaired through DNA repair pathways. GE products currently include CRISPR-associated nuclease DNA breaks, prime editors generated DNA flaps, single nucleotide-modifications, transposases, and recombinases. The discovery of double-strand breaks, site-specific nucleases (SSNs), and repair mechanisms paved the way for targeted GE, and the first-generation GE tools, ZFNs and TALENs, were successfully utilized in plant GE. However, CRISPR-Cas has now become the preferred tool for GE due to its speed, reliability, and cost-effectiveness. Plant functional genomics has benefited significantly from the widespread use of CRISPR technology for advancements and developments. This review highlights the progress made in CRISPR technology, including multiplex editing, base editing (BE), and prime editing (PE), as well as the challenges and potential delivery mechanisms.
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Affiliation(s)
- Ahmad Ali
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | | | - Zunaira Farooq
- National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
| | - Syed Riaz Ahmed
- Nuclear Institute for Agriculture and Biology College (NIAB-C), Pakistan Institute of Engineering and Applied Science (PIEAS), Nilore, Pakistan
| | - Aqsa Ijaz
- Nuclear Institute for Agriculture and Biology College (NIAB-C), Pakistan Institute of Engineering and Applied Science (PIEAS), Nilore, Pakistan
| | - Zunaira Anwar
- Nuclear Institute for Agriculture and Biology College (NIAB-C), Pakistan Institute of Engineering and Applied Science (PIEAS), Nilore, Pakistan
| | - Huma Abbas
- Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Sayyam Tariq
- Nuclear Institute for Agriculture and Biology College (NIAB-C), Pakistan Institute of Engineering and Applied Science (PIEAS), Nilore, Pakistan
| | - Hala Tariq
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Mahwish Mustafa
- Center of Agricultural Biochemistry and Biotechnology, University of Agriculture, Faisalabad, Pakistan
| | | | - Fiza Shaukat
- Center of Agricultural Biochemistry and Biotechnology, University of Agriculture, Faisalabad, Pakistan
| | - Abdul Razzaq
- Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | - Ren Maozhi
- Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
- Institute of, Urban Agriculture, Chinese Academy of Agriculture Science, Chengdu, China
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Mahmood MA, Naqvi RZ, Rahman SU, Amin I, Mansoor S. Plant Virus-Derived Vectors for Plant Genome Engineering. Viruses 2023; 15:v15020531. [PMID: 36851743 PMCID: PMC9958682 DOI: 10.3390/v15020531] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/25/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Advances in genome engineering (GE) tools based on sequence-specific programmable nucleases have revolutionized precise genome editing in plants. However, only the traditional approaches are used to deliver these GE reagents, which mostly rely on Agrobacterium-mediated transformation or particle bombardment. These techniques have been successfully used for the past decades for the genetic engineering of plants with some limitations relating to lengthy time-taking protocols and transgenes integration-related regulatory concerns. Nevertheless, in the era of climate change, we require certain faster protocols for developing climate-smart resilient crops through GE to deal with global food security. Therefore, some alternative approaches are needed to robustly deliver the GE reagents. In this case, the plant viral vectors could be an excellent option for the delivery of GE reagents because they are efficient, effective, and precise. Additionally, these are autonomously replicating and considered as natural specialists for transient delivery. In the present review, we have discussed the potential use of these plant viral vectors for the efficient delivery of GE reagents. We have further described the different plant viral vectors, such as DNA and RNA viruses, which have been used as efficient gene targeting systems in model plants, and in other important crops including potato, tomato, wheat, and rice. The achievements gained so far in the use of viral vectors as a carrier for GE reagent delivery are depicted along with the benefits and limitations of each viral vector. Moreover, recent advances have been explored in employing viral vectors for GE and adapting this technology for future research.
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Affiliation(s)
- Muhammad Arslan Mahmood
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), College of Pakistan Institute of Engineering and Applied Sciences (PIEAS), Jhang Road, Faisalabad 38000, Pakistan
- Department of Biological Sciences, University of Sialkot, Sialkot 51310, Pakistan
| | - Rubab Zahra Naqvi
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), College of Pakistan Institute of Engineering and Applied Sciences (PIEAS), Jhang Road, Faisalabad 38000, Pakistan
| | - Saleem Ur Rahman
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), College of Pakistan Institute of Engineering and Applied Sciences (PIEAS), Jhang Road, Faisalabad 38000, Pakistan
| | - Imran Amin
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), College of Pakistan Institute of Engineering and Applied Sciences (PIEAS), Jhang Road, Faisalabad 38000, Pakistan
| | - Shahid Mansoor
- Agricultural Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), College of Pakistan Institute of Engineering and Applied Sciences (PIEAS), Jhang Road, Faisalabad 38000, Pakistan
- International Center for Chemical and Biological Sciences, University of Karachi, Karachi 74000, Pakistan
- Correspondence:
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Mabuza LM, Mchunu NP, Crampton BG, Swanevelder DZH. Accelerated Breeding for Helianthus annuus (Sunflower) through Doubled Haploidy: An Insight on Past and Future Prospects in the Era of Genome Editing. PLANTS (BASEL, SWITZERLAND) 2023; 12:485. [PMID: 36771570 PMCID: PMC9921946 DOI: 10.3390/plants12030485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The aim of any breeding process is to fully express the targeted, superior/desirable parent characteristic in the progeny. Hybrids are often used in this dynamic, and complex process for which homozygous parents-which may require up to eight generations of back crossing and selection-are required. Doubled haploid (DH) technologies can facilitate the production of true breeding lines faster and in a more efficient manner than the traditional back crossing and selection strategies. Sunflower is the third most important oilseed crop in the world and has no available double haploid induction procedure/technique that can be efficiently used in breeding programs. A reproducible and efficient doubled haploid induction method would be a valuable tool in accelerating the breeding of new elite sunflower varieties. Although several attempts have been made, the establishment of a sunflower doubled haploid induction protocol has remained a challenge owing recalcitrance to in vitro culture regeneration. Approaches for haploid development in other crops are often cultivar specific, difficult to reproduce, and rely on available tissue culture protocols-which on their own are also cultivar and/or species specific. As an out-crossing crop, the lack of a double haploid system limits sunflower breeding and associated improvement processes, thereby delaying new hybrid and trait developments. Significant molecular advances targeting genes, such as the centromeric histone 3 (CenH3) and Matrilineal (MTL) gene with CRISPR/Cas9, and the successful use of viral vectors for the delivery of CRISPR/Cas9 components into plant cells eliminating the in vitro culture bottleneck, have the potential to improve double haploid technology in sunflower. In this review, the different strategies, their challenges, and opportunities for achieving doubled haploids in sunflower are explored.
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Affiliation(s)
- Londiwe M. Mabuza
- Biotechnology Platform, Agricultural Research Council, Onderstepoort Campus, Onderstepoort, Pretoria 0110, South Africa
- Department of Plant Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Pretoria 0028, South Africa
| | - Nokuthula P. Mchunu
- Biotechnology Platform, Agricultural Research Council, Onderstepoort Campus, Onderstepoort, Pretoria 0110, South Africa
- Strategy, Planning and Partnerships, National Research Foundation, Pretoria 0184, South Africa
| | - Bridget G. Crampton
- Department of Plant Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Pretoria 0028, South Africa
| | - Dirk Z. H. Swanevelder
- Biotechnology Platform, Agricultural Research Council, Onderstepoort Campus, Onderstepoort, Pretoria 0110, South Africa
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Zhang J, Xing J, Mi Q, Yang W, Xiang H, Xu L, Zeng W, Wang J, Deng L, Jiang J, Yang G, Gao Q, Li X. Highly efficient transgene-free genome editing in tobacco using an optimized CRISPR/Cas9 system, pOREU3TR. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 326:111523. [PMID: 36334622 DOI: 10.1016/j.plantsci.2022.111523] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/21/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
CRISPR/Cas9 genome-editing technology has revolutionized plant science and holds enormous promise for crop improvement. The exploration of this system received much attention regarding plant genome editing. Here, by editing the NtPDS gene in tobacco, we first verified that incorporating an OsU3-tRNA promoter combination into the CRISPR/Cas9 system contributed to the highest editing efficiency, as the sgRNA expression level was greater than that resulting from the AtU6-tRNA and AtU6 promoters. Then, we optimized the existing tobacco CRISPR/Cas9 system, pORE-Cas9, by using the OsU3-tRNA promoter combination instead of AtU6 and by fusing an AtUb10-Ros1 expression cassette to the T-DNA to monitor the transgene events. The new system was named pOREU3TR. As expected, 49 transgene-free and homozygous gene-edited green plants were effectively screened in the T1 generation as a result of editing the NtLHT1 gene in tobacco, and the plant height and the contents of most free amino acids in the leaves of the T2 mutant plants were significantly different from those in the leaves of WT plants, demonstrating the high efficiency of the new editing system. This OsU3-tRNA-sgRNA/AtUb10-Ros1 system provides essential improvements for increasing the efficiency of plant genome editing.
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Affiliation(s)
- Jianduo Zhang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Jiaxin Xing
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Qili Mi
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Wenwu Yang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Haiying Xiang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Li Xu
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Wanli Zeng
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Jin Wang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Lele Deng
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Jiarui Jiang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Guangyu Yang
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China
| | - Qian Gao
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China.
| | - Xuemei Li
- Technology Center of China Tobacco Yunnan Industrial Co. Ltd., No. 41 Keyi Road, Kunming 650106, China.
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CRISPR/Cas Genome Editing Technologies for Plant Improvement against Biotic and Abiotic Stresses: Advances, Limitations, and Future Perspectives. Cells 2022; 11:cells11233928. [PMID: 36497186 PMCID: PMC9736268 DOI: 10.3390/cells11233928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Crossbreeding, mutation breeding, and traditional transgenic breeding take much time to improve desirable characters/traits. CRISPR/Cas-mediated genome editing (GE) is a game-changing tool that can create variation in desired traits, such as biotic and abiotic resistance, increase quality and yield in less time with easy applications, high efficiency, and low cost in producing the targeted edits for rapid improvement of crop plants. Plant pathogens and the severe environment cause considerable crop losses worldwide. GE approaches have emerged and opened new doors for breeding multiple-resistance crop varieties. Here, we have summarized recent advances in CRISPR/Cas-mediated GE for resistance against biotic and abiotic stresses in a crop molecular breeding program that includes the modification and improvement of genes response to biotic stresses induced by fungus, virus, and bacterial pathogens. We also discussed in depth the application of CRISPR/Cas for abiotic stresses (herbicide, drought, heat, and cold) in plants. In addition, we discussed the limitations and future challenges faced by breeders using GE tools for crop improvement and suggested directions for future improvements in GE for agricultural applications, providing novel ideas to create super cultivars with broad resistance to biotic and abiotic stress.
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13
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Wang W, Yu Z, He F, Bai G, Trick HN, Akhunova A, Akhunov E. Multiplexed promoter and gene editing in wheat using a virus-based guide RNA delivery system. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:2332-2341. [PMID: 36070109 PMCID: PMC9674318 DOI: 10.1111/pbi.13910] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/20/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
The low efficiency of genetic transformation and gene editing across diverse cultivars hinder the broad application of CRISPR technology for crop improvement. The development of virus-based methods of CRISPR-Cas system delivery into the plant cells holds great promise to overcome these limitations. Here, we perform direct inoculation of wheat leaves with the barley stripe mosaic virus (BSMV) transcripts to deliver guide RNAs (sgRNA) into the Cas9-expressing wheat. We demonstrate that wheat inoculation with the pool of BSMV-sgRNAs could be used to generate heritable precise deletions in the promoter region of a transcription factor and to perform multiplexed editing of agronomic genes. We transfer the high-expressing locus of Cas9 into adapted spring and winter cultivars by marker-assisted introgression and use of the BSMV-sgRNAs to edit two agronomic genes. A strategy presented in our study could be applied to any adapted cultivar for creating new cis-regulatory diversity or large-scale editing of multiple genes in biological pathways or QTL regions, opening possibilities for the effective engineering of crop genomes, and accelerating gene discovery and trait improvement efforts.
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Affiliation(s)
- Wei Wang
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
- Wheat Genetic Resources CenterKansas State UniversityManhattanKSUSA
| | - Zitong Yu
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
- Wheat Genetic Resources CenterKansas State UniversityManhattanKSUSA
| | - Fei He
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
- Present address:
State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijingChina
| | - Guihua Bai
- Hard Winter Wheat Genetics Research UnitUSDA‐ARSManhattanKSUSA
| | - Harold N. Trick
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Alina Akhunova
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
- Integrated Genomic FacilityKansas State UniversityManhattanKSUSA
| | - Eduard Akhunov
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
- Wheat Genetic Resources CenterKansas State UniversityManhattanKSUSA
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14
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Lei J, Li Y, Dai P, Liu C, Zhao Y, You Y, Qu Y, Chen Q, Liu X. Efficient virus-mediated genome editing in cotton using the CRISPR/Cas9 system. FRONTIERS IN PLANT SCIENCE 2022; 13:1032799. [PMID: 36466231 PMCID: PMC9709312 DOI: 10.3389/fpls.2022.1032799] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/19/2022] [Indexed: 06/17/2023]
Abstract
Plant virus-mediated sgRNA delivery and expression have great advantages; sgRNA expression can rapidly expand and accumulate along with virus replication and movement, resulting in efficient gene editing efficiency. In this study, a VIGE system based on cotton leaf crumple virus (CLCrV) was established using cotton overexpressing Cas9 (Cas9-OE) as the VIGE receptor. CLCrV-mediated VIGE could not only target and knock out the GhMAPKKK2, GhCLA1 and GhPDS genes subgroup A and D genome sequences but also achieve double mutation of GhCLA1 and GhPDS genes at the same time. These results verified the effectiveness and efficiency of this system. In addition, the off-target effect assay demonstrated that the CLCrV-mediated VIGE system not only has high gene editing efficiency but also high gene editing specificity in cotton. We further explored whether the FT-sgRNA strategy could transport sgRNA to cotton apical meristem (SAM) over long distances to avoid using tissue culture to obtain stable genetic mutants. The results showed that the sgRNA fused with FT mRNA at the 5' end could also efficiently achieve targeted editing of endogenous genes in cotton, but it was difficult to detect heritable mutant progeny. The above results showed that the CLCrV-mediated VIGE system provided an accurate and rapid validation tool for screening effective sgRNAs in cotton.
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Affiliation(s)
- Jianfeng Lei
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, China
| | - Yue Li
- College of Life Sciences, Xinjiang Agricultural University, Urumqi, China
| | - Peihong Dai
- College of Life Sciences, Xinjiang Agricultural University, Urumqi, China
| | - Chao Liu
- College of Life Sciences, Xinjiang Agricultural University, Urumqi, China
| | - Yi Zhao
- College of Life Sciences, Xinjiang Agricultural University, Urumqi, China
| | - Yangzi You
- College of Life Sciences, Xinjiang Agricultural University, Urumqi, China
| | - Yanying Qu
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, China
| | - Quanjia Chen
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, China
| | - Xiaodong Liu
- College of Life Sciences, Xinjiang Agricultural University, Urumqi, China
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15
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Robertson G, Burger J, Campa M. CRISPR/Cas-based tools for the targeted control of plant viruses. MOLECULAR PLANT PATHOLOGY 2022; 23:1701-1718. [PMID: 35920132 PMCID: PMC9562834 DOI: 10.1111/mpp.13252] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/09/2022] [Accepted: 07/01/2022] [Indexed: 05/15/2023]
Abstract
Plant viruses are known to infect most economically important crops and pose a major threat to global food security. Currently, few resistant host phenotypes have been delineated, and while chemicals are used for crop protection against insect pests and bacterial or fungal diseases, these are inefficient against viral diseases. Genetic engineering emerged as a way of modifying the plant genome by introducing functional genes in plants to improve crop productivity under adverse environmental conditions. Recently, new breeding technologies, and in particular the exciting CRISPR/Cas (clustered regularly interspaced short palindromic repeats/CRISPR-associated proteins) technology, was shown to be a powerful alternative to engineer resistance against plant viruses, thus has great potential for reducing crop losses and improving plant productivity to directly contribute to food security. Indeed, it could circumvent the "Genetic modification" issues because it allows for genome editing without the integration of foreign DNA or RNA into the genome of the host plant, and it is simpler and more versatile than other new breeding technologies. In this review, we describe the predominant features of the major CRISPR/Cas systems and outline strategies for the delivery of CRISPR/Cas reagents to plant cells. We also provide an overview of recent advances that have engineered CRISPR/Cas-based resistance against DNA and RNA viruses in plants through the targeted manipulation of either the viral genome or susceptibility factors of the host plant genome. Finally, we provide insight into the limitations and challenges that CRISPR/Cas technology currently faces and discuss a few alternative applications of the technology in virus research.
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Affiliation(s)
- Gaëlle Robertson
- Department of GeneticsStellenbosch UniversityMatielandSouth Africa
- Department of Experimental and Health SciencesUniversitat Pompeu FabraBarcelonaSpain
| | - Johan Burger
- Department of GeneticsStellenbosch UniversityMatielandSouth Africa
| | - Manuela Campa
- Department of GeneticsStellenbosch UniversityMatielandSouth Africa
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16
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Virus-Induced Gene Editing and Its Applications in Plants. Int J Mol Sci 2022; 23:ijms231810202. [PMID: 36142116 PMCID: PMC9499690 DOI: 10.3390/ijms231810202] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/28/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
CRISPR/Cas-based genome editing technologies, which allow the precise manipulation of plant genomes, have revolutionized plant science and enabled the creation of germplasms with beneficial traits. In order to apply these technologies, CRISPR/Cas reagents must be delivered into plant cells; however, this is limited by tissue culture challenges. Recently, viral vectors have been used to deliver CRISPR/Cas reagents into plant cells. Virus-induced genome editing (VIGE) has emerged as a powerful method with several advantages, including high editing efficiency and a simplified process for generating gene-edited DNA-free plants. Here, we briefly describe CRISPR/Cas-based genome editing. We then focus on VIGE systems and the types of viruses used currently for CRISPR/Cas9 cassette delivery and genome editing. We also highlight recent applications of and advances in VIGE in plants. Finally, we discuss the challenges and potential for VIGE in plants.
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17
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Selma S, Gianoglio S, Uranga M, Vázquez‐Vilar M, Espinosa‐Ruiz A, Drapal M, Fraser PD, Daròs J, Orzáez D. Potato virus X-delivered CRISPR activation programs lead to strong endogenous gene induction and transient metabolic reprogramming in Nicotiana benthamiana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1550-1564. [PMID: 35822533 PMCID: PMC9541417 DOI: 10.1111/tpj.15906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/28/2022] [Accepted: 07/07/2022] [Indexed: 05/11/2023]
Abstract
Programmable transcriptional regulators based on CRISPR architecture are promising tools for the induction of plant gene expression. In plants, CRISPR gene activation is effective with respect to modulating development processes, such as the flowering time or customizing biochemical composition. The most widely used method for delivering CRISPR components into the plant is Agrobacterium tumefaciens-mediated genetic transformation, either transient or stable. However, as a result of their versatility and their ability to move, virus-derived systems have emerged as an interesting alternative for supplying the CRISPR components to the plant, in particular guide RNA (gRNA), which represents the variable component in CRISPR strategies. In the present study, we describe a Potato virus X-derived vector that, upon agroinfection in Nicotiana benthamiana, serves as a vehicle for delivery of gRNAs, producing highly specific virus-induced gene activation. The system works in combination with a N. benthamiana transgenic line carrying the remaining complementary CRISPR gene activation components, specifically the dCasEV2.1 cassette, which has been shown previously to mediate strong programmable transcriptional activation in plants. Using an easily scalable, non-invasive spraying method, we show that gRNA-mediated activation programs move locally and systemically, generating a strong activation response in different target genes. Furthermore, by activating three different endogenous MYB transcription factors, we demonstrate that this Potato virus X-based virus-induced gene reprogramming strategy results in program-specific metabolic fingerprints in N. benthamiana leaves characterized by distinctive phenylpropanoid-enriched metabolite profiles.
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Affiliation(s)
- Sara Selma
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
| | - Silvia Gianoglio
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
| | - Mireia Uranga
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
| | - Marta Vázquez‐Vilar
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
| | - Ana Espinosa‐Ruiz
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
| | | | | | - José‐Antonio Daròs
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
| | - Diego Orzáez
- Instituto Biología Molecular y celular de PlantasCSIC‐Universitat Politècnica de ValènciaValencia46022Spain
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18
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Singh J, Sharma D, Brar GS, Sandhu KS, Wani SH, Kashyap R, Kour A, Singh S. CRISPR/Cas tool designs for multiplex genome editing and its applications in developing biotic and abiotic stress-resistant crop plants. Mol Biol Rep 2022; 49:11443-11467. [PMID: 36002653 DOI: 10.1007/s11033-022-07741-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/22/2022] [Accepted: 06/22/2022] [Indexed: 11/28/2022]
Abstract
Crop plants are prone to several yield-reducing biotic and abiotic stresses. The crop yield reductions due to these stresses need addressing to maintain an adequate balance between the increasing world population and food production to avoid food scarcities in the future. It is impossible to increase the area under food crops proportionately to meet the rising food demand. In such an adverse scenario overcoming the biotic and abiotic stresses through biotechnological interventions may serve as a boon to help meet the globe's food requirements. Under the current genomic era, the wide availability of genomic resources and genome editing technologies such as Transcription Activator-Like Effector Nucleases (TALENs), Zinc Finger Nucleases (ZFNs), and Clustered-Regularly Interspaced Palindromic Repeats/CRISPR-associated proteins (CRISPR/Cas) has widened the scope of overcoming these stresses for several food crops. These techniques have made gene editing more manageable and accessible with changes at the embryo level by adding or deleting DNA sequences of the target gene(s) from the genome. The CRISPR construct consists of a single guide RNA having complementarity with the nucleotide fragments of the target gene sequence, accompanied by a protospacer adjacent motif. The target sequence in the organism's genome is then cleaved by the Cas9 endonuclease for obtaining a desired trait of interest. The current review describes the components, mechanisms, and types of CRISPR/Cas techniques and how this technology has helped to functionally characterize genes associated with various biotic and abiotic stresses in a target organism. This review also summarizes the application of CRISPR/Cas technology targeting these stresses in crops through knocking down/out of associated genes.
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Affiliation(s)
- Jagmohan Singh
- Division of Plant Pathology, Indian Agricultural Research Institute, 110012, New Delhi, India.,Guru Angad Dev Veterinary and Animal Science University, KVK, Barnala, India
| | - Dimple Sharma
- Department of Food Science and Human Nutrition, Michigan State University, 48824, East Lansing, MI, USA
| | - Gagandeep Singh Brar
- Department of Biological Sciences, North Dakota State University, 58102, Fargo, ND, USA
| | - Karansher Singh Sandhu
- Department of Crop and Soil Sciences, Washington State University, 99163, Pullman, WA, USA
| | - Shabir Hussain Wani
- Mountain Research Center for Field Crops, Sher-e-Kashmir University of Agricultural Sciences and Technology Srinagar, Khudwani, Srinagar, Jammu, Kashmir, India
| | - Ruchika Kashyap
- Department of Agronomy, Horticulture, and Plant Sciences, South Dakota State University, 57007, Brookings, SD, USA
| | - Amardeep Kour
- Regional Research Station, Punjab Agricultural University, 151001, Bathinda, Punjab, India
| | - Satnam Singh
- Regional Research Station, Punjab Agricultural University, 151203, Faridkot, Punjab, India.
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Touzdjian Pinheiro Kohlrausch Távora F, de Assis dos Santos Diniz F, de Moraes Rêgo-Machado C, Chagas Freitas N, Barbosa Monteiro Arraes F, Chumbinho de Andrade E, Furtado LL, Osiro KO, Lima de Sousa N, Cardoso TB, Márcia Mertz Henning L, Abrão de Oliveira Molinari P, Feingold SE, Hunter WB, Fátima Grossi de Sá M, Kobayashi AK, Lima Nepomuceno A, Santiago TR, Correa Molinari HB. CRISPR/Cas- and Topical RNAi-Based Technologies for Crop Management and Improvement: Reviewing the Risk Assessment and Challenges Towards a More Sustainable Agriculture. Front Bioeng Biotechnol 2022; 10:913728. [PMID: 35837551 PMCID: PMC9274005 DOI: 10.3389/fbioe.2022.913728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated gene (Cas) system and RNA interference (RNAi)-based non-transgenic approaches are powerful technologies capable of revolutionizing plant research and breeding. In recent years, the use of these modern technologies has been explored in various sectors of agriculture, introducing or improving important agronomic traits in plant crops, such as increased yield, nutritional quality, abiotic- and, mostly, biotic-stress resistance. However, the limitations of each technique, public perception, and regulatory aspects are hindering its wide adoption for the development of new crop varieties or products. In an attempt to reverse these mishaps, scientists have been researching alternatives to increase the specificity, uptake, and stability of the CRISPR and RNAi system components in the target organism, as well as to reduce the chance of toxicity in nontarget organisms to minimize environmental risk, health problems, and regulatory issues. In this review, we discuss several aspects related to risk assessment, toxicity, and advances in the use of CRISPR/Cas and topical RNAi-based technologies in crop management and breeding. The present study also highlights the advantages and possible drawbacks of each technology, provides a brief overview of how to circumvent the off-target occurrence, the strategies to increase on-target specificity, the harm/benefits of association with nanotechnology, the public perception of the available techniques, worldwide regulatory frameworks regarding topical RNAi and CRISPR technologies, and, lastly, presents successful case studies of biotechnological solutions derived from both technologies, raising potential challenges to reach the market and being social and environmentally safe.
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Affiliation(s)
| | | | | | | | | | | | | | - Karen Ofuji Osiro
- Department of Phytopathology, University of Brasília, Brasília, Brazil
- Embrapa Agroenergy, Brasília, Brazil
| | | | | | | | | | | | - Wayne B. Hunter
- USDA-ARS, U.S. Horticultural Research Laboratory, Fort Pierce, FL, United States
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20
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Uranga M, Daròs JA. Tools and targets: The dual role of plant viruses in CRISPR-Cas genome editing. THE PLANT GENOME 2022:e20220. [PMID: 35698891 DOI: 10.1002/tpg2.20220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
The recent emergence of tools based on the clustered, regularly interspaced, short palindromic repeats (CRISPR) and CRISPR-associated (Cas) proteins have revolutionized targeted genome editing, thus holding great promise to both basic plant science and precision crop breeding. Conventional approaches for the delivery of editing components rely on transformation technologies or transient delivery to protoplasts, both of which are time-consuming, laborious, and can raise legal concerns. Alternatively, plant RNA viruses can be used as transient delivery vectors of CRISPR-Cas reaction components, following the so-called virus-induced genome editing (VIGE). During the last years, researchers have been able to engineer viral vectors for the delivery of CRISPR guide RNAs and Cas nucleases. Considering that each viral vector is limited to its molecular biology properties and a specific host range, here we review recent advances for improving the VIGE toolbox with a special focus on strategies to achieve tissue-culture-free editing in plants. We also explore the utility of CRISPR-Cas technology to enhance biotic resistance with a special focus on plant virus diseases. This can be achieved by either targeting the viral genome or modifying essential host susceptibility genes that mediate in the infection process. Finally, we discuss the challenges and potential that VIGE holds in future breeding technologies.
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Affiliation(s)
- Mireia Uranga
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas - University. Politècnica de València, Valencia, 46022, Spain
| | - José-Antonio Daròs
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas - University. Politècnica de València, Valencia, 46022, Spain
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21
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Beernink BM, Lappe RR, Bredow M, Whitham SA. Impacts of RNA Mobility Signals on Virus Induced Somatic and Germline Gene Editing. Front Genome Ed 2022; 4:925088. [PMID: 35755451 PMCID: PMC9219249 DOI: 10.3389/fgeed.2022.925088] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Viral vectors are being engineered to deliver CRISPR/Cas9 components systemically in plants to induce somatic or heritable site-specific mutations. It is hypothesized that RNA mobility signals facilitate entry of viruses or single guide RNAs (sgRNAs) into the shoot apical meristem where germline mutations can occur. Our objective was to understand the impact of RNA mobility signals on virus-induced somatic and germline gene editing in Nicotiana benthamiana and Zea mays. Previously, we showed that foxtail mosaic virus (FoMV) expressing sgRNA induced somatic mutations in N. benthamiana and Z. mays expressing Cas9. Here, we fused RNA mobility signals to sgRNAs targeting the genes encoding either N. benthamiana phytoene desaturase (PDS) or Z. mays high affinity potassium transporter 1 (HKT1). Addition of Arabidopsis thaliana Flowering Locus T (AtFT) and A. thaliana tRNA-Isoleucine (AttRNAIle) did not improve FoMV-induced somatic editing, and neither were sufficient to facilitate germline mutations in N. benthamiana. Maize FT homologs, Centroradialus 16 (ZCN16) and ZCN19, as well as AttRNAIle were found to aid somatic editing in maize but did not enable sgRNAs delivered by FoMV to induce germline mutations. Additional viral guide RNA delivery systems were assessed for somatic and germline mutations in N. benthamiana with the intention of gaining a better understanding of the specificity of mobile signal-facilitated germline editing. Potato virus X (PVX), barley stripe mosaic virus (BSMV), and tobacco rattle virus (TRV) were included in this comparative study, and all three of these viruses delivering sgRNA were able to induce somatic and germline mutations. Unexpectedly, PVX, a potexvirus closely related to FoMV, expressing sgRNA alone induced biallelic edited progeny, indicating that mobility signals are dispensable in virus-induced germline editing. These results show that PVX, BSMV, and TRV expressing sgRNA all have an innate ability to induce mutations in the germline. Our results indicate that mobility signals alone may not be sufficient to enable virus-based delivery of sgRNAs using the viruses, FoMV, PVX, BSMV, and TRV into cell types that result in germline mutations.
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22
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Genome Editing: A Promising Approach for Achieving Abiotic Stress Tolerance in Plants. Int J Genomics 2022; 2022:5547231. [PMID: 35465040 PMCID: PMC9033345 DOI: 10.1155/2022/5547231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/24/2022] [Indexed: 12/26/2022] Open
Abstract
The susceptibility of crop plants towards abiotic stresses is highly threatening to assure global food security as it results in almost 50% annual yield loss. To address this issue, several strategies like plant breeding and genetic engineering have been used by researchers from time to time. However, these approaches are not sufficient to ensure stress resilience due to the complexity associated with the inheritance of abiotic stress adaptive traits. Thus, researchers were prompted to develop novel techniques with high precision that can address the challenges connected to the previous strategies. Genome editing is the latest approach that is in the limelight for improving the stress tolerance of plants. It has revolutionized crop research due to its versatility and precision. The present review is an update on the different genome editing tools used for crop improvement so far and the various challenges associated with them. It also highlights the emerging potential of genome editing for developing abiotic stress-resilient crops.
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Bhattacharjee B, Hallan V. Geminivirus-Derived Vectors as Tools for Functional Genomics. Front Microbiol 2022; 13:799345. [PMID: 35432267 PMCID: PMC9010885 DOI: 10.3389/fmicb.2022.799345] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 02/03/2022] [Indexed: 11/24/2022] Open
Abstract
A persistent issue in the agricultural sector worldwide is the intensive damage caused to crops by the geminivirus family of viruses. The diverse types of viruses, rapid virus evolution rate, and broad host range make this group of viruses one of the most devastating in nature, leading to millions of dollars' worth of crop damage. Geminiviruses have a small genome and can be either monopartite or bipartite, with or without satellites. Their ability to independently replicate within the plant without integration into the host genome and the relatively easy handling make them excellent candidates for plant bioengineering. This aspect is of great importance as geminiviruses can act as natural nanoparticles in plants which can be utilized for a plethora of functions ranging from vaccine development systems to geminivirus-induced gene silencing (GIGS), through deconstructed viral vectors. Thus, the investigation of these plant viruses is pertinent to understanding their crucial roles in nature and subsequently utilizing them as beneficial tools in functional genomics. This review, therefore, highlights some of the characteristics of these viruses that can be deemed significant and the subsequent successful case studies for exploitation of these potentially significant pathogens for role mining in functional biology.
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Affiliation(s)
- Bipasha Bhattacharjee
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Plant Virology Laboratory, Division of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
| | - Vipin Hallan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Plant Virology Laboratory, Division of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
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24
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He Y, Mudgett M, Zhao Y. Advances in gene editing without residual transgenes in plants. PLANT PHYSIOLOGY 2022; 188:1757-1768. [PMID: 34893903 PMCID: PMC8968301 DOI: 10.1093/plphys/kiab574] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 11/09/2021] [Indexed: 05/24/2023]
Abstract
Transgene residuals in edited plants affect genetic analysis, pose off-target risks, and cause regulatory concerns. Several strategies have been developed to efficiently edit target genes without leaving any transgenes in plants. Some approaches directly address this issue by editing plant genomes with DNA-free reagents. On the other hand, DNA-based techniques require another step for ensuring plants are transgene-free. Fluorescent markers, pigments, and chemical treatments have all been employed as tools to distinguish transgenic plants from transgene-free plants quickly and easily. Moreover, suicide genes have been used to trigger self-elimination of transgenic plants, greatly improving the efficiency of isolating the desired transgene-free plants. Transgenes can also be excised from plant genomes using site-specific recombination, transposition or gene editing nucleases, providing a strategy for editing asexually produced plants. Finally, haploid induction coupled with gene editing may make it feasible to edit plants that are recalcitrant to transformation. Here, we evaluate the strengths and weaknesses of recently developed approaches for obtaining edited plants without transgene residuals.
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Affiliation(s)
- Yubing He
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Collaborative Innovation Center for Modern Crop Production Co-sponsored by Province and Ministry, Nanjing Agricultural University, Nanjing 210095, China
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Science, Nanjing 210014, China
| | - Michael Mudgett
- Section of Cell and Developmental Biology, University of California San Diego, La Jolla, California 92093-0116, USA
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25
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Tomasiak A, Zhou M, Betekhtin A. Buckwheat in Tissue Culture Research: Current Status and Future Perspectives. Int J Mol Sci 2022; 23:ijms23042298. [PMID: 35216414 PMCID: PMC8876565 DOI: 10.3390/ijms23042298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 11/16/2022] Open
Abstract
Buckwheat is a member of a genus of 23 species, where the two most common species are Fagopyrum esculentum (common buckwheat) and Fagopyrum tataricum (Tartary buckwheat). This pseudocereal is a source of micro and macro nutrients, such as gluten-free proteins and amino acids, fatty acids, bioactive compounds, dietary fibre, fagopyrins, vitamins and minerals. It is gaining increasing attention due to its health-promoting properties. Buckwheat is widely susceptible to in vitro conditions which are used to study plantlet regeneration, callus induction, organogenesis, somatic embryogenesis, and the synthesis of phenolic compounds. This review summarises the development of buckwheat in in vitro culture and describes protocols for the regeneration of plantlets from various explants and differing concentrations of plant growth regulators. It also describes callus induction protocols as well as the role of calli in plantlet regeneration. Protocols for establishing hairy root cultures with the use of Agrobacterium rhizogens are useful in the synthesis of secondary metabolites, as well as protocols used for transgenic plants. The review also focuses on the future prospects of buckwheat in tissue culture and the challenges researchers are addressing.
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Affiliation(s)
- Alicja Tomasiak
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, 28 Jagiellonska St., 40-032 Katowice, Poland;
| | - Meiliang Zhou
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Room 405, National Crop Genebank Building, Zhongguancun South Street No. 12, Haidian District, Beijing 100081, China;
| | - Alexander Betekhtin
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, 28 Jagiellonska St., 40-032 Katowice, Poland;
- Correspondence:
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26
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Gentzel IN, Ohlson EW, Redinbaugh MG, Wang GL. VIGE: virus-induced genome editing for improving abiotic and biotic stress traits in plants. STRESS BIOLOGY 2022; 2:2. [PMID: 37676518 PMCID: PMC10441944 DOI: 10.1007/s44154-021-00026-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/12/2021] [Indexed: 09/08/2023]
Abstract
Agricultural production is hampered by disease, pests, and environmental stresses. To minimize yield loss, it is important to develop crop cultivars with resistance or tolerance to their respective biotic and abiotic constraints. Transformation techniques are not optimized for many species and desirable cultivars may not be amenable to genetic transformation, necessitating inferior cultivar usage and time-consuming introgression through backcrossing to the preferred variety. Overcoming these limitations will greatly facilitate the development of disease, insect, and abiotic stress tolerant crops. One such avenue for rapid crop improvement is the development of viral systems to deliver CRISPR/Cas-based genome editing technology to plants to generate targeted beneficial mutations. Viral delivery of genomic editing constructs can theoretically be applied to span the entire host range of the virus utilized, circumventing the challenges associated with traditional transformation and breeding techniques. Here we explore the types of viruses that have been optimized for CRISPR/Cas9 delivery, the phenotypic outcomes achieved in recent studies, and discuss the future potential of this rapidly advancing technology.
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Affiliation(s)
- Irene N Gentzel
- Department of Plant Pathology, The Ohio State University, Columbus, OH, 43210, USA.
| | - Erik W Ohlson
- USDA, Agricultural Research Service, Corn, Soybean and Wheat Quality Research Unit, Wooster, OH, 44691, USA
| | | | - Guo-Liang Wang
- Department of Plant Pathology, The Ohio State University, Columbus, OH, 43210, USA.
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27
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Gupta P, Hirschberg J. The Genetic Components of a Natural Color Palette: A Comprehensive List of Carotenoid Pathway Mutations in Plants. FRONTIERS IN PLANT SCIENCE 2022; 12:806184. [PMID: 35069664 PMCID: PMC8770946 DOI: 10.3389/fpls.2021.806184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 12/08/2021] [Indexed: 05/16/2023]
Abstract
Carotenoids comprise the most widely distributed natural pigments. In plants, they play indispensable roles in photosynthesis, furnish colors to flowers and fruit and serve as precursor molecules for the synthesis of apocarotenoids, including aroma and scent, phytohormones and other signaling molecules. Dietary carotenoids are vital to human health as a source of provitamin A and antioxidants. Hence, the enormous interest in carotenoids of crop plants. Over the past three decades, the carotenoid biosynthesis pathway has been mainly deciphered due to the characterization of natural and induced mutations that impair this process. Over the year, numerous mutations have been studied in dozens of plant species. Their phenotypes have significantly expanded our understanding of the biochemical and molecular processes underlying carotenoid accumulation in crops. Several of them were employed in the breeding of crops with higher nutritional value. This compendium of all known random and targeted mutants available in the carotenoid metabolic pathway in plants provides a valuable resource for future research on carotenoid biosynthesis in plant species.
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Affiliation(s)
| | - Joseph Hirschberg
- Department of Genetics, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
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28
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Gong Z, Cheng M, Botella JR. Non-GM Genome Editing Approaches in Crops. Front Genome Ed 2022; 3:817279. [PMID: 34977860 PMCID: PMC8715957 DOI: 10.3389/fgeed.2021.817279] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 12/02/2021] [Indexed: 11/13/2022] Open
Abstract
CRISPR/Cas-based genome editing technologies have the potential to fast-track large-scale crop breeding programs. However, the rigid cell wall limits the delivery of CRISPR/Cas components into plant cells, decreasing genome editing efficiency. Established methods, such as Agrobacterium tumefaciens-mediated or biolistic transformation have been used to integrate genetic cassettes containing CRISPR components into the plant genome. Although efficient, these methods pose several problems, including 1) The transformation process requires laborious and time-consuming tissue culture and regeneration steps; 2) many crop species and elite varieties are recalcitrant to transformation; 3) The segregation of transgenes in vegetatively propagated or highly heterozygous crops, such as pineapple, is either difficult or impossible; and 4) The production of a genetically modified first generation can lead to public controversy and onerous government regulations. The development of transgene-free genome editing technologies can address many problems associated with transgenic-based approaches. Transgene-free genome editing have been achieved through the delivery of preassembled CRISPR/Cas ribonucleoproteins, although its application is limited. The use of viral vectors for delivery of CRISPR/Cas components has recently emerged as a powerful alternative but it requires further exploration. In this review, we discuss the different strategies, principles, applications, and future directions of transgene-free genome editing methods.
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Affiliation(s)
- Zheng Gong
- Plant Genetic Engineering Laboratory, School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD, Australia
| | - Ming Cheng
- Plant Genetic Engineering Laboratory, School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD, Australia
| | - Jose R Botella
- Plant Genetic Engineering Laboratory, School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD, Australia
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29
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Mohan C, Easterling M, Yau YY. Gene Editing Technologies for Sugarcane Improvement: Opportunities and Limitations. SUGAR TECH : AN INTERNATIONAL JOURNAL OF SUGAR CROPS & RELATED INDUSTRIES 2022; 24:369-385. [PMID: 34667393 PMCID: PMC8517945 DOI: 10.1007/s12355-021-01045-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 08/07/2021] [Indexed: 05/05/2023]
Abstract
Plant-based biofuels present a promising alternative to depleting non-renewable fuel resources. One of the benefits of biofuel is reduced environmental impact, including reduction in greenhouse gas emission which causes climate change. Sugarcane is one of the most important bioenergy crops. Sugarcane juice is used to produce table sugar and first-generation biofuel (e.g., bioethanol). Sugarcane bagasse is also a potential material for second-generation cellulosic biofuel production. Researchers worldwide are striving to improve sugarcane biomass yield and quality by a variety of means including biotechnological tools. This paper reviews the use of sugarcane as a feedstock for biofuel production, and gene manipulation tools and approaches, including RNAi and genome-editing tools, such as TALENs and CRISPR-Cas9, for improving its quality. The specific focus here is on CRISPR system because it is low cost, simple in design and versatile compared to other genome-editing tools. The advance of CRISPR-Cas9 technology has transformed plant research with its ability to precisely delete, insert or replace genes in recent years. Lignin is the primary material responsible for biomass recalcitrance in biofuel production. The use of genome editing technology to modify lignin composition and distribution in sugarcane cell wall has been realized. The current and potential applications of genome editing technology for sugarcane improvement are discussed. The advantages and limitations of utilizing RNAi and TALEN techniques in sugarcane improvement are discussed as well.
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Affiliation(s)
- Chakravarthi Mohan
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, Brazil
| | - Mona Easterling
- Department of Natural Sciences, Northeastern State University, Broken Arrow, OK 74014 USA
- Northeast Campus, Tulsa Community College, 3727 East Apache St, Tulsa, OK 74115 USA
| | - Yuan-Yeu Yau
- Department of Natural Sciences, Northeastern State University, Broken Arrow, OK 74014 USA
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30
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Oh Y, Kim SG. RPS5A Promoter-Driven Cas9 Produces Heritable Virus-Induced Genome Editing in Nicotiana attenuata. Mol Cells 2021; 44:911-919. [PMID: 34963106 PMCID: PMC8718363 DOI: 10.14348/molcells.2021.0237] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 11/27/2022] Open
Abstract
The virus-induced genome editing (VIGE) system aims to induce targeted mutations in seeds without requiring any tissue culture. Here, we show that tobacco rattle virus (TRV) harboring guide RNA (gRNA) edits germ cells in a wild tobacco, Nicotiana attenuata, that expresses Streptococcus pyogenes Cas9 (SpCas9). We first generated N. attenuata transgenic plants expressing SpCas9 under the control of 35S promoter and infected rosette leaves with TRV carrying gRNA. Gene-edited seeds were not found in the progeny of the infected N. attenuata. Next, the N. attenuata ribosomal protein S5 A (RPS5A) promoter fused to SpCas9 was employed to induce the heritable gene editing with TRV. The RPS5A promoter-driven SpCas9 successfully produced monoallelic mutations at three target genes in N. attenuata seeds with TRV-delivered guide RNA. These monoallelic mutations were found in 2%-6% seeds among M1 progenies. This editing method provides an alternative way to increase the heritable editing efficacy of VIGE.
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Affiliation(s)
- Youngbin Oh
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon 34141, Korea
| | - Sang-Gyu Kim
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon 34141, Korea
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31
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Eini O, Schumann N, Niessen M, Varrelmann M. Targeted mutagenesis in plants using Beet curly top virus for efficient delivery of CRISPR/Cas12a components. N Biotechnol 2021; 67:1-11. [PMID: 34896246 DOI: 10.1016/j.nbt.2021.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 11/29/2021] [Accepted: 12/05/2021] [Indexed: 10/19/2022]
Abstract
Genome editing using CRISPR/Cas is rapidly being developed for gene targeting in eukaryotes including plants. However, gene targeting by homology-directed DNA recombination (HDR) is an infrequent event compared to the dominant DNA repair by non-homologous end-joining. Another bottleneck is the ineffective delivery of CRISPR/Cas components into plant cells. To overcome these constraints, here a geminiviral replicon from Beet curly top virus (BCTV) has been produced with a wide host range and high DNA accumulation capacity for efficient delivery of CRISPR/Cas12a components into plant cells. Initially, a BCTV replicon was prepared after removing the virion sense genes from an infectious full-length clone for agrobacterium mediated infection. This replicon expressed a green fluorescent protein (GFP) marker gene at a high level compared to T-DNA binary vector. In transient assay, the BCTV replicon produced a higher rate of mutagenesis and HDR in the GFP transgene in Nicotiana benthamiana through efficient delivery of CRISPR/Cas12a components compared to the cognate T-DNA control. This was through a range of complete or partial HDR for conversion of GFP into YFP after exchange of a single amino acid (Thr224Tyr) in the target gene. In addition, induced mutagenesis and HDR in the target gene were heritable. Thus, the BCTV replicon provides a new tool for efficient delivery of CRISPR/Cas12a components that could be used in a wide range of dicotyledonous plants. The established GFP to YFP system and the GFP mutant line produced also enable further optimization and understanding of HDR in plants via CRISPR/Cas12a system using geminiviral replicons.
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Affiliation(s)
- Omid Eini
- Department of Plant Protection, University of Zanjan, 313, Zanjan, Iran; Department of Phytopathology, Institute for Sugar Beet Research, 37079, Göttingen, Germany.
| | | | | | - Mark Varrelmann
- Department of Phytopathology, Institute for Sugar Beet Research, 37079, Göttingen, Germany
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32
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Ahmad A, Munawar N, Khan Z, Qusmani AT, Khan SH, Jamil A, Ashraf S, Ghouri MZ, Aslam S, Mubarik MS, Munir A, Sultan Q, Abd-Elsalam KA, Qari SH. An Outlook on Global Regulatory Landscape for Genome-Edited Crops. Int J Mol Sci 2021; 22:11753. [PMID: 34769204 PMCID: PMC8583973 DOI: 10.3390/ijms222111753] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/23/2021] [Accepted: 10/23/2021] [Indexed: 12/13/2022] Open
Abstract
The revolutionary technology of CRISPR/Cas systems and their extraordinary potential to address fundamental questions in every field of biological sciences has led to their developers being awarded the 2020 Nobel Prize for Chemistry. In agriculture, CRISPR/Cas systems have accelerated the development of new crop varieties with improved traits-without the need for transgenes. However, the future of this technology depends on a clear and truly global regulatory framework being developed for these crops. Some CRISPR-edited crops are already on the market, and yet countries and regions are still divided over their legal status. CRISPR editing does not require transgenes, making CRISPR crops more socially acceptable than genetically modified crops, but there is vigorous debate over how to regulate these crops and what precautionary measures are required before they appear on the market. This article reviews intended outcomes and risks arising from the site-directed nuclease CRISPR systems used to improve agricultural crop plant genomes. It examines how various CRISPR system components, and potential concerns associated with CRISPR/Cas, may trigger regulatory oversight of CRISPR-edited crops. The article highlights differences and similarities between GMOs and CRISPR-edited crops, and discusses social and ethical concerns. It outlines the regulatory framework for GMO crops, which many countries also apply to CRISPR-edited crops, and the global regulatory landscape for CRISPR-edited crops. The article concludes with future prospects for CRISPR-edited crops and their products.
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Affiliation(s)
- Aftab Ahmad
- Center for Advanced Studies in Agriculture and Food Security (CASAFS), University of Agriculture, Faisalabad 38000, Pakistan; (A.A.); (S.H.K.); (M.Z.G.); (S.A.); (M.S.M.); (Q.S.)
- Department of Biochemistry, University of Agriculture, Faisalabad 38000, Pakistan; (A.J.); (S.A.); (A.M.)
| | - Nayla Munawar
- Department of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates;
| | - Zulqurnain Khan
- Institute of Plant Breeding and Biotechnology, MNS University of Agriculture Multan, Multan 60000, Pakistan;
| | - Alaa T. Qusmani
- Biology Department, Al-Jumum University College, Umm Al-Qura University, Makkah 24243, Saudi Arabia;
| | - Sultan Habibullah Khan
- Center for Advanced Studies in Agriculture and Food Security (CASAFS), University of Agriculture, Faisalabad 38000, Pakistan; (A.A.); (S.H.K.); (M.Z.G.); (S.A.); (M.S.M.); (Q.S.)
- Center for Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad 38000, Pakistan
| | - Amer Jamil
- Department of Biochemistry, University of Agriculture, Faisalabad 38000, Pakistan; (A.J.); (S.A.); (A.M.)
- Center for Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad 38000, Pakistan
| | - Sidra Ashraf
- Department of Biochemistry, University of Agriculture, Faisalabad 38000, Pakistan; (A.J.); (S.A.); (A.M.)
| | - Muhammad Zubair Ghouri
- Center for Advanced Studies in Agriculture and Food Security (CASAFS), University of Agriculture, Faisalabad 38000, Pakistan; (A.A.); (S.H.K.); (M.Z.G.); (S.A.); (M.S.M.); (Q.S.)
- Center for Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad 38000, Pakistan
| | - Sabin Aslam
- Center for Advanced Studies in Agriculture and Food Security (CASAFS), University of Agriculture, Faisalabad 38000, Pakistan; (A.A.); (S.H.K.); (M.Z.G.); (S.A.); (M.S.M.); (Q.S.)
| | - Muhammad Salman Mubarik
- Center for Advanced Studies in Agriculture and Food Security (CASAFS), University of Agriculture, Faisalabad 38000, Pakistan; (A.A.); (S.H.K.); (M.Z.G.); (S.A.); (M.S.M.); (Q.S.)
| | - Ahmad Munir
- Department of Biochemistry, University of Agriculture, Faisalabad 38000, Pakistan; (A.J.); (S.A.); (A.M.)
| | - Qaiser Sultan
- Center for Advanced Studies in Agriculture and Food Security (CASAFS), University of Agriculture, Faisalabad 38000, Pakistan; (A.A.); (S.H.K.); (M.Z.G.); (S.A.); (M.S.M.); (Q.S.)
| | - Kamel A. Abd-Elsalam
- Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza 12619, Egypt;
| | - Sameer H. Qari
- Molecular Biology Central Laboratory (GMCL), Department of Biology/Genetics, Aljumum University College, Umm Al-Qura University, Makkah 24243, Saudi Arabia
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33
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Ahmad A, Munawar N, Khan Z, Qusmani AT, Khan SH, Jamil A, Ashraf S, Ghouri MZ, Aslam S, Mubarik MS, Munir A, Sultan Q, Abd-Elsalam KA, Qari SH. An Outlook on Global Regulatory Landscape for Genome-Edited Crops. Int J Mol Sci 2021. [DOI: https://doi.org/10.3390/ijms222111753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The revolutionary technology of CRISPR/Cas systems and their extraordinary potential to address fundamental questions in every field of biological sciences has led to their developers being awarded the 2020 Nobel Prize for Chemistry. In agriculture, CRISPR/Cas systems have accelerated the development of new crop varieties with improved traits—without the need for transgenes. However, the future of this technology depends on a clear and truly global regulatory framework being developed for these crops. Some CRISPR-edited crops are already on the market, and yet countries and regions are still divided over their legal status. CRISPR editing does not require transgenes, making CRISPR crops more socially acceptable than genetically modified crops, but there is vigorous debate over how to regulate these crops and what precautionary measures are required before they appear on the market. This article reviews intended outcomes and risks arising from the site-directed nuclease CRISPR systems used to improve agricultural crop plant genomes. It examines how various CRISPR system components, and potential concerns associated with CRISPR/Cas, may trigger regulatory oversight of CRISPR-edited crops. The article highlights differences and similarities between GMOs and CRISPR-edited crops, and discusses social and ethical concerns. It outlines the regulatory framework for GMO crops, which many countries also apply to CRISPR-edited crops, and the global regulatory landscape for CRISPR-edited crops. The article concludes with future prospects for CRISPR-edited crops and their products.
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34
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Abstract
The revolutionary technology of CRISPR/Cas systems and their extraordinary potential to address fundamental questions in every field of biological sciences has led to their developers being awarded the 2020 Nobel Prize for Chemistry. In agriculture, CRISPR/Cas systems have accelerated the development of new crop varieties with improved traits-without the need for transgenes. However, the future of this technology depends on a clear and truly global regulatory framework being developed for these crops. Some CRISPR-edited crops are already on the market, and yet countries and regions are still divided over their legal status. CRISPR editing does not require transgenes, making CRISPR crops more socially acceptable than genetically modified crops, but there is vigorous debate over how to regulate these crops and what precautionary measures are required before they appear on the market. This article reviews intended outcomes and risks arising from the site-directed nuclease CRISPR systems used to improve agricultural crop plant genomes. It examines how various CRISPR system components, and potential concerns associated with CRISPR/Cas, may trigger regulatory oversight of CRISPR-edited crops. The article highlights differences and similarities between GMOs and CRISPR-edited crops, and discusses social and ethical concerns. It outlines the regulatory framework for GMO crops, which many countries also apply to CRISPR-edited crops, and the global regulatory landscape for CRISPR-edited crops. The article concludes with future prospects for CRISPR-edited crops and their products.
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35
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Kaur M, Manchanda P, Kalia A, Ahmed FK, Nepovimova E, Kuca K, Abd-Elsalam KA. Agroinfiltration Mediated Scalable Transient Gene Expression in Genome Edited Crop Plants. Int J Mol Sci 2021; 22:10882. [PMID: 34639221 PMCID: PMC8509792 DOI: 10.3390/ijms221910882] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/23/2021] [Accepted: 10/03/2021] [Indexed: 02/07/2023] Open
Abstract
Agrobacterium-mediated transformation is one of the most commonly used genetic transformation method that involves transfer of foreign genes into target plants. Agroinfiltration, an Agrobacterium-based transient approach and the breakthrough discovery of CRISPR/Cas9 holds trending stature to perform targeted and efficient genome editing (GE). The predominant feature of agroinfiltration is the abolishment of Transfer-DNA (T-DNA) integration event to ensure fewer biosafety and regulatory issues besides showcasing the capability to perform transcription and translation efficiently, hence providing a large picture through pilot-scale experiment via transient approach. The direct delivery of recombinant agrobacteria through this approach carrying CRISPR/Cas cassette to knockout the expression of the target gene in the intercellular tissue spaces by physical or vacuum infiltration can simplify the targeted site modification. This review aims to provide information on Agrobacterium-mediated transformation and implementation of agroinfiltration with GE to widen the horizon of targeted genome editing before a stable genome editing approach. This will ease the screening of numerous functions of genes in different plant species with wider applicability in future.
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Affiliation(s)
- Maninder Kaur
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab 141004, India;
| | - Pooja Manchanda
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab 141004, India;
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab 141004, India;
| | - Farah K. Ahmed
- Biotechnology English Program, Faculty of Agriculture, Cairo University, Giza 12613, Egypt;
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic;
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic;
- Biomedical Research Center, University Hospital Hradec Kralove, 50005 Hradec Kralove, Czech Republic
| | - Kamel A. Abd-Elsalam
- Plant Pathology Research Institute, Agricultural Research Center (ARC), 9-Gamaa St., Giza 12619, Egypt;
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Uranga M, Vazquez-Vilar M, Orzáez D, Daròs JA. CRISPR-Cas12a Genome Editing at the Whole-Plant Level Using Two Compatible RNA Virus Vectors. CRISPR J 2021; 4:761-769. [PMID: 34558964 DOI: 10.1089/crispr.2021.0049] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The use of viral vectors that can replicate and move systemically through the host plant to deliver bacterial CRISPR components enables genome editing at the whole-plant level and avoids the requirement for labor-intensive stable transformation. However, this approach usually relies on previously transformed plants that stably express a CRISPR-Cas nuclease. Here, we describe successful DNA-free genome editing of Nicotiana benthamiana using two compatible RNA virus vectors derived from tobacco etch virus (TEV; genus Potyvirus) and potato virus X (PVX; genus Potexvirus), which replicate in the same cells. The TEV and PVX vectors respectively express a Cas12a nuclease and the corresponding guide RNA. This novel two-virus vector system improves the toolbox for transformation-free virus-induced genome editing in plants and will advance efforts to breed more nutritious, resistant, and productive crops.
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Affiliation(s)
- Mireia Uranga
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia, Spain
| | - Marta Vazquez-Vilar
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia, Spain
| | - Diego Orzáez
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia, Spain
| | - José-Antonio Daròs
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia, Spain
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Luo Y, Na R, Nowak JS, Qiu Y, Lu QS, Yang C, Marsolais F, Tian L. Development of a Csy4-processed guide RNA delivery system with soybean-infecting virus ALSV for genome editing. BMC PLANT BIOLOGY 2021; 21:419. [PMID: 34517842 PMCID: PMC8436479 DOI: 10.1186/s12870-021-03138-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 04/26/2021] [Indexed: 05/03/2023]
Abstract
BACKGROUND A key issue for implementation of CRISPR-Cas9 genome editing for plant trait improvement and gene function analysis is to efficiently deliver the components, including guide RNAs (gRNAs) and Cas9, into plants. Plant virus-based gRNA delivery strategy has proven to be an important tool for genome editing. However, its application in soybean which is an important crop has not been reported yet. ALSV (apple latent spherical virus) is highly infectious virus and could be explored for delivering elements for genome editing. RESULTS To develop a ALSV-based gRNA delivery system, the Cas9-based Csy4-processed ALSV Carry (CCAC) system was developed. In this system, we engineered the soybean-infecting ALSV to carry and deliver gRNA(s). The endoribonuclease Csy4 effectively releases gRNAs that function efficiently in Cas9-mediated genome editing. Genome editing of endogenous phytoene desaturase (PDS) loci and exogenous 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) sequence in Nicotiana. benthamiana (N. benthamiana) through CCAC was confirmed using Sanger sequencing. Furthermore, CCAC-induced mutagenesis in two soybean endogenous GW2 paralogs was detected. CONCLUSIONS With the aid of the CCAC system, the target-specific gRNA(s) can be easily manipulated and efficiently delivered into soybean plant cells by viral infection. This is the first virus-based gRNA delivery system for soybean for genome editing and can be used for gene function study and trait improvement.
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Affiliation(s)
- Yanjie Luo
- London Research and Development Centre, Agriculture and Agri-Food Canada, N5V 4T3 London, ON Canada
| | - Ren Na
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang, 050031 China
| | - Julia S. Nowak
- London Research and Development Centre, Agriculture and Agri-Food Canada, N5V 4T3 London, ON Canada
| | - Yang Qiu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Qing Shi Lu
- London Research and Development Centre, Agriculture and Agri-Food Canada, N5V 4T3 London, ON Canada
| | - Chunyan Yang
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang, 050031 China
| | - Frédéric Marsolais
- London Research and Development Centre, Agriculture and Agri-Food Canada, N5V 4T3 London, ON Canada
| | - Lining Tian
- London Research and Development Centre, Agriculture and Agri-Food Canada, N5V 4T3 London, ON Canada
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Ali Z, Mahfouz MM. CRISPR/Cas systems versus plant viruses: engineering plant immunity and beyond. PLANT PHYSIOLOGY 2021; 186:1770-1785. [PMID: 35237805 PMCID: PMC8331158 DOI: 10.1093/plphys/kiab220] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 04/16/2021] [Indexed: 05/02/2023]
Abstract
Molecular engineering of plant immunity to confer resistance against plant viruses holds great promise for mitigating crop losses and improving plant productivity and yields, thereby enhancing food security. Several approaches have been employed to boost immunity in plants by interfering with the transmission or lifecycles of viruses. In this review, we discuss the successful application of clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) (CRISPR/Cas) systems to engineer plant immunity, increase plant resistance to viruses, and develop viral diagnostic tools. Furthermore, we examine the use of plant viruses as delivery systems to engineer virus resistance in plants and provide insight into the limitations of current CRISPR/Cas approaches and the potential of newly discovered CRISPR/Cas systems to engineer better immunity and develop better diagnostics tools for plant viruses. Finally, we outline potential solutions to key challenges in the field to enable the practical use of these systems for crop protection and viral diagnostics.
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Affiliation(s)
- Zahir Ali
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Magdy M Mahfouz
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Author for communication:
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Schultink A, Steinbrenner AD. A playbook for developing disease-resistant crops through immune receptor identification and transfer. CURRENT OPINION IN PLANT BIOLOGY 2021; 62:102089. [PMID: 34333377 DOI: 10.1016/j.pbi.2021.102089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/08/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Plants are resistant to most pathogens because of an immune system that perceives invading microbes and activates defense. A large repertoire of innate immune receptors mediates specific direct or indirect recognition of pathogen-derived molecules. Disease is often a consequence of insufficient immune surveillance, and the transfer of immune receptor genes from resistant plants to susceptible crop varieties is an effective strategy for combating disease outbreaks. We discuss approaches for identifying intracellular and cell surface immune receptors, with particular focus on recently developed and emerging methodologies. We also review considerations for the transfer of immune receptor genes into crop species, including additional host factors that may be required for immune receptor function. Together, these concepts lay out a broadly applicable playbook for developing crop varieties with durable disease resistance.
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Sattar MN, Iqbal Z, Al-Khayri JM, Jain SM. Induced Genetic Variations in Fruit Trees Using New Breeding Tools: Food Security and Climate Resilience. PLANTS (BASEL, SWITZERLAND) 2021; 10:1347. [PMID: 34371550 PMCID: PMC8309169 DOI: 10.3390/plants10071347] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/23/2021] [Accepted: 06/28/2021] [Indexed: 12/22/2022]
Abstract
Fruit trees provide essential nutrients to humans by contributing to major agricultural outputs and economic growth globally. However, major constraints to sustainable agricultural productivity are the uncontrolled proliferation of the population, and biotic and abiotic stresses. Tree mutation breeding has been substantially improved using different physical and chemical mutagens. Nonetheless, tree plant breeding has certain crucial bottlenecks including a long life cycle, ploidy level, occurrence of sequence polymorphisms, nature of parthenocarpic fruit development and linkage. Genetic engineering of trees has focused on boosting quality traits such as productivity, wood quality, and resistance to biotic and abiotic stresses. Recent technological advances in genome editing provide a unique opportunity for the genetic improvement of woody plants. This review examines application of the CRISPR-Cas system to reduce disease susceptibility, alter plant architecture, enhance fruit quality, and improve yields. Examples are discussed of the contemporary CRISPR-Cas system to engineer easily scorable PDS genes, modify lignin, and to alter the flowering onset, fertility, tree architecture and certain biotic stresses.
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Affiliation(s)
- Muhammad Naeem Sattar
- Central Laboratories, King Faisal University, Al-Ahsa 31982, Saudi Arabia; (M.N.S.); (Z.I.)
| | - Zafar Iqbal
- Central Laboratories, King Faisal University, Al-Ahsa 31982, Saudi Arabia; (M.N.S.); (Z.I.)
| | - Jameel M. Al-Khayri
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - S. Mohan Jain
- Department of Agricultural Sciences, PL-27, University of Helsinki, 00014 Helsinki, Finland;
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Basso MF, Duarte KE, Santiago TR, de Souza WR, Garcia BDO, da Cunha BDB, Kobayashi AK, Molinari HBC. Efficient genome editing and gene knockout in Setaria viridis with CRISPR/Cas9 directed gene editing by the non-homologous end-joining pathway. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2021; 38:227-238. [PMID: 34393601 PMCID: PMC8329270 DOI: 10.5511/plantbiotechnology.21.0407a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 04/07/2021] [Indexed: 05/05/2023]
Abstract
The CRISPR/Cas9 system has been used for genome editing in several organisms, including higher plants. This system induces site-specific mutations in the genome based on the nucleotide sequence of engineered guide RNAs. The complex genomes of C4 grasses makes genome editing a challenge in key grass crops like maize (Zea mays), sorghum (Sorghum bicolor), Brachiaria spp., switchgrass (Panicum virgatum), and sugarcane (Saccharum spp.). Setaria viridis is a diploid C4 grass widely used as a model for these C4 crop plants. Here, an optimized CRISPR/Cas9 binary vector that exploits the non-homologous end joining (NHEJ) system was used to knockout a green fluorescent protein (gfp) transgene in S. viridis accession A10.1. Transformation of embryogenic callus by A. tumefaciens generated ten glufosinate-ammonium resistant transgenic events. In the T0 generation, 60% of the events were biallelic mutants in the gfp transgene with no detectable accumulation of GFP protein and without insertions or deletions in predicted off-target sites. The gfp mutations generated by CRISPR/Cas9 were stable and displayed Mendelian segregation in the T1 generation. Altogether, the system described here is a highly efficient genome editing system for S. viridis, an important model plant for functional genomics studies in C4 grasses. Also, this system is a potential tool for improvement of agronomic traits in C4 crop plants with complex genomes.
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Affiliation(s)
- Marcos Fernando Basso
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
- BIOMOL/BIOTEC Laboratory, Mato Grosso Cotton Institute (IMAmt), Rondonópolis, MT, 78740-970, Brazil
| | - Karoline Estefani Duarte
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
- Center for Natural and Human Sciences, Federal University of ABC (UFABC), São Bernardo do Campo, São Paulo, 09606-045, Brazil
| | - Thais Ribeiro Santiago
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
- Departament of Phytopathology, Federal University of Brasília, Brasília (UNB), Distrito Federal, 70910-900, Brazil
| | - Wagner Rodrigo de Souza
- Center for Natural and Human Sciences, Federal University of ABC (UFABC), São Bernardo do Campo, São Paulo, 09606-045, Brazil
| | - Bruno de Oliveira Garcia
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
| | - Bárbara Dias Brito da Cunha
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
| | - Adilson Kenji Kobayashi
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
| | - Hugo Bruno Correa Molinari
- National Center for Agroenergy Research (CNPAE), Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, DF, 70770-901, Brazil
- E-mail: Tel: +55-61-3448-2307, Fax: +55-61-34481598
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Kim YC, Kang Y, Yang EY, Cho MC, Schafleitner R, Lee JH, Jang S. Applications and Major Achievements of Genome Editing in Vegetable Crops: A Review. FRONTIERS IN PLANT SCIENCE 2021; 12:688980. [PMID: 34178006 PMCID: PMC8231707 DOI: 10.3389/fpls.2021.688980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/18/2021] [Indexed: 05/04/2023]
Abstract
The emergence of genome-editing technology has allowed manipulation of DNA sequences in genomes to precisely remove or replace specific sequences in organisms resulting in targeted mutations. In plants, genome editing is an attractive method to alter gene functions to generate improved crop varieties. Genome editing is thought to be simple to use and has a lower risk of off-target effects compared to classical mutation breeding. Furthermore, genome-editing technology tools can also be applied directly to crops that contain complex genomes and/or are not easily bred using traditional methods. Currently, highly versatile genome-editing tools for precise and predictable editing of almost any locus in the plant genome make it possible to extend the range of application, including functional genomics research and molecular crop breeding. Vegetables are essential nutrient sources for humans and provide vitamins, minerals, and fiber to diets, thereby contributing to human health. In this review, we provide an overview of the brief history of genome-editing technologies and the components of genome-editing tool boxes, and illustrate basic modes of operation in representative systems. We describe the current and potential practical application of genome editing for the development of improved nutritious vegetables and present several case studies demonstrating the potential of the technology. Finally, we highlight future directions and challenges in applying genome-editing systems to vegetable crops for research and product development.
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Affiliation(s)
- Young-Cheon Kim
- Division of Life Sciences, Jeonbuk National University, Jeonju, South Korea
| | - Yeeun Kang
- World Vegetable Center Korea Office, Wanju-gun, South Korea
| | - Eun-Young Yang
- National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Wanju-gun, South Korea
| | - Myeong-Cheoul Cho
- National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Wanju-gun, South Korea
| | | | - Jeong Hwan Lee
- Division of Life Sciences, Jeonbuk National University, Jeonju, South Korea
| | - Seonghoe Jang
- World Vegetable Center Korea Office, Wanju-gun, South Korea
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Mores A, Borrelli GM, Laidò G, Petruzzino G, Pecchioni N, Amoroso LGM, Desiderio F, Mazzucotelli E, Mastrangelo AM, Marone D. Genomic Approaches to Identify Molecular Bases of Crop Resistance to Diseases and to Develop Future Breeding Strategies. Int J Mol Sci 2021; 22:5423. [PMID: 34063853 PMCID: PMC8196592 DOI: 10.3390/ijms22115423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/30/2021] [Accepted: 05/15/2021] [Indexed: 12/16/2022] Open
Abstract
Plant diseases are responsible for substantial crop losses each year and affect food security and agricultural sustainability. The improvement of crop resistance to pathogens through breeding represents an environmentally sound method for managing disease and minimizing these losses. The challenge is to breed varieties with a stable and broad-spectrum resistance. Different approaches, from markers to recent genomic and 'post-genomic era' technologies, will be reviewed in order to contribute to a better understanding of the complexity of host-pathogen interactions and genes, including those with small phenotypic effects and mechanisms that underlie resistance. An efficient combination of these approaches is herein proposed as the basis to develop a successful breeding strategy to obtain resistant crop varieties that yield higher in increasing disease scenarios.
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Affiliation(s)
- Antonia Mores
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
| | - Grazia Maria Borrelli
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
| | - Giovanni Laidò
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
| | - Giuseppe Petruzzino
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
| | - Nicola Pecchioni
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
| | | | - Francesca Desiderio
- Council for Agricultural Research and Economics, Genomics and Bioinformatics Research Center, Via San Protaso 302, 29017 Fiorenzuola d’Arda, Italy; (F.D.); (E.M.)
| | - Elisabetta Mazzucotelli
- Council for Agricultural Research and Economics, Genomics and Bioinformatics Research Center, Via San Protaso 302, 29017 Fiorenzuola d’Arda, Italy; (F.D.); (E.M.)
| | - Anna Maria Mastrangelo
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
| | - Daniela Marone
- Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, S.S. 673, Km 25,200, 71122 Foggia, Italy; (A.M.); (G.M.B.); (G.L.); (G.P.); (N.P.); (A.M.M.)
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Oh Y, Kim H, Kim SG. Virus-induced plant genome editing. CURRENT OPINION IN PLANT BIOLOGY 2021; 60:101992. [PMID: 33450609 DOI: 10.1016/j.pbi.2020.101992] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/10/2020] [Accepted: 12/14/2020] [Indexed: 05/27/2023]
Abstract
Plant viruses have been engineered to express heterologous proteins and RNAs in plants for several decades. This viral system can now be applied to editing plant genomes. Virus vectors can deliver Cas proteins and guide RNAs, two key components of the CRISPR gene-editing system, into a plant cell without a complicated experimental procedure. In some cases, plant viruses move to meristematic cells and express gene-editing components in the cell, which results in the production of mutant seeds. Here, we focus on three main issues of the virus-induced genome editing (VIGE) technology in plants: (1) how to express the relatively large size of Cas proteins, (2) how to express guide RNA, and (3) how to increase the efficiency with which viruses are delivered into meristematic cells. We highlight recent advances in how plant virus vectors can be used efficiently in plant-genome editing.
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Affiliation(s)
- Youngbin Oh
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon 34141, Republic of Korea
| | - Hyeonjin Kim
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon 34141, Republic of Korea
| | - Sang-Gyu Kim
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon 34141, Republic of Korea.
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Uranga M, Aragonés V, Selma S, Vázquez‐Vilar M, Orzáez D, Daròs J. Efficient Cas9 multiplex editing using unspaced sgRNA arrays engineering in a Potato virus X vector. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:555-565. [PMID: 33484202 PMCID: PMC8251967 DOI: 10.1111/tpj.15164] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 05/18/2023]
Abstract
Systems based on the clustered, regularly interspaced, short palindromic repeat (CRISPR) and CRISPR-associated proteins (Cas) have revolutionized genome editing in many organisms, including plants. Most CRISPR-Cas strategies in plants rely on genetic transformation using Agrobacterium tumefaciens to supply the gene editing reagents, such as Cas nucleases or the synthetic guide RNA (sgRNA). While Cas nucleases are constant elements in editing approaches, sgRNAs are target-specific and a screening process is usually required to identify those most effective. Plant virus-derived vectors are an alternative for the fast and efficient delivery of sgRNAs into adult plants, due to the virus capacity for genome amplification and systemic movement, a strategy known as virus-induced genome editing. We engineered Potato virus X (PVX) to build a vector that easily expresses multiple sgRNAs in adult solanaceous plants. Using the PVX-based vector, Nicotiana benthamiana genes were efficiently targeted, producing nearly 80% indels in a transformed line that constitutively expresses Streptococcus pyogenes Cas9. Interestingly, results showed that the PVX vector allows expression of arrays of unspaced sgRNAs, achieving highly efficient multiplex editing in a few days in adult plant tissues. Moreover, virus-free edited progeny can be obtained from plants regenerated from infected tissues or infected plant seeds, which exhibit a high rate of heritable biallelic mutations. In conclusion, this new PVX vector allows easy, fast and efficient expression of sgRNA arrays for multiplex CRISPR-Cas genome editing and will be a useful tool for functional gene analysis and precision breeding across diverse plant species, particularly in Solanaceae crops.
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Affiliation(s)
- Mireia Uranga
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)Avenida de los Naranjos s/nValencia46022Spain
| | - Verónica Aragonés
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)Avenida de los Naranjos s/nValencia46022Spain
| | - Sara Selma
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)Avenida de los Naranjos s/nValencia46022Spain
| | - Marta Vázquez‐Vilar
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)Avenida de los Naranjos s/nValencia46022Spain
| | - Diego Orzáez
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)Avenida de los Naranjos s/nValencia46022Spain
| | - José‐Antonio Daròs
- Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas‐Universitat Politècnica de València)Avenida de los Naranjos s/nValencia46022Spain
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Nidhi S, Anand U, Oleksak P, Tripathi P, Lal JA, Thomas G, Kuca K, Tripathi V. Novel CRISPR-Cas Systems: An Updated Review of the Current Achievements, Applications, and Future Research Perspectives. Int J Mol Sci 2021; 22:3327. [PMID: 33805113 PMCID: PMC8036902 DOI: 10.3390/ijms22073327] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 12/11/2022] Open
Abstract
According to Darwin's theory, endless evolution leads to a revolution. One such example is the Clustered Regularly Interspaced Palindromic Repeats (CRISPR)-Cas system, an adaptive immunity system in most archaea and many bacteria. Gene editing technology possesses a crucial potential to dramatically impact miscellaneous areas of life, and CRISPR-Cas represents the most suitable strategy. The system has ignited a revolution in the field of genetic engineering. The ease, precision, affordability of this system is akin to a Midas touch for researchers editing genomes. Undoubtedly, the applications of this system are endless. The CRISPR-Cas system is extensively employed in the treatment of infectious and genetic diseases, in metabolic disorders, in curing cancer, in developing sustainable methods for fuel production and chemicals, in improving the quality and quantity of food crops, and thus in catering to global food demands. Future applications of CRISPR-Cas will provide benefits for everyone and will save countless lives. The technology is evolving rapidly; therefore, an overview of continuous improvement is important. In this review, we aim to elucidate the current state of the CRISPR-Cas revolution in a tailor-made format from its discovery to exciting breakthroughs at the application level and further upcoming trends related to opportunities and challenges including ethical concerns.
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Affiliation(s)
- Sweta Nidhi
- Department of Genomics and Bioinformatics, Aix-Marseille University, 13007 Marseille, France;
| | - Uttpal Anand
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel;
| | - Patrik Oleksak
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic;
| | - Pooja Tripathi
- Department of Computational Biology and Bioinformatics, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj 211007, Uttar Pradesh, India;
| | - Jonathan A. Lal
- Department of Molecular and Cellular Engineering, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj 211007, Uttar Pradesh, India; (J.A.L.); (G.T.)
| | - George Thomas
- Department of Molecular and Cellular Engineering, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj 211007, Uttar Pradesh, India; (J.A.L.); (G.T.)
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic;
| | - Vijay Tripathi
- Department of Molecular and Cellular Engineering, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj 211007, Uttar Pradesh, India; (J.A.L.); (G.T.)
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Chuang YF, Phipps AJ, Lin FL, Hecht V, Hewitt AW, Wang PY, Liu GS. Approach for in vivo delivery of CRISPR/Cas system: a recent update and future prospect. Cell Mol Life Sci 2021; 78:2683-2708. [PMID: 33388855 PMCID: PMC11072787 DOI: 10.1007/s00018-020-03725-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/19/2020] [Accepted: 11/26/2020] [Indexed: 12/14/2022]
Abstract
The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) system provides a groundbreaking genetic technology that allows scientists to modify genes by targeting specific genomic sites. Due to the relative simplicity and versatility of the CRISPR/Cas system, it has been extensively applied in human genetic research as well as in agricultural applications, such as improving crops. Since the gene editing activity of the CRISPR/Cas system largely depends on the efficiency of introducing the system into cells or tissues, an efficient and specific delivery system is critical for applying CRISPR/Cas technology. However, there are still some hurdles remaining for the translatability of CRISPR/Cas system. In this review, we summarized the approaches used for the delivery of the CRISPR/Cas system in mammals, plants, and aquacultures. We further discussed the aspects of delivery that can be improved to elevate the potential for CRISPR/Cas translatability.
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Affiliation(s)
- Yu-Fan Chuang
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, 518055, China
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, TAS, 7000, Australia
| | - Andrew J Phipps
- Wicking Dementia Research and Education Centre, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Fan-Li Lin
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, 518055, China
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, TAS, 7000, Australia
| | - Valerie Hecht
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
| | - Alex W Hewitt
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, TAS, 7000, Australia
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, VIC, Australia
| | - Peng-Yuan Wang
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, 518055, China.
- Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, VIC, Australia.
| | - Guei-Sheung Liu
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, TAS, 7000, Australia.
- Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, VIC, Australia.
- Aier Eye Institute, Changsha, Hunan, China.
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Lei J, Dai P, Li Y, Zhang W, Zhou G, Liu C, Liu X. Heritable gene editing using FT mobile guide RNAs and DNA viruses. PLANT METHODS 2021; 17:20. [PMID: 33596981 PMCID: PMC7890912 DOI: 10.1186/s13007-021-00719-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/06/2021] [Indexed: 05/04/2023]
Abstract
BACKGROUND The virus-induced genome editing (VIGE) system can be used to quickly identify gene functions and generate knock-out libraries as an alternative to the virus-induced gene silencing (VIGS). Although plant virus-mediated VIGE has been shown to have great application prospects, edited genes cannot be transferred to the next generations using this system, as viruses cannot enter into shoot apical meristem (SAM) in plants. RESULTS We developed a novel cotton leaf crumple virus (CLCrV)-mediated VIGE system designed to target BRI1, GL2, PDS genes, and GUS transgene in A. thaliana by transforming Cas9 overexpression (Cas9-OE) A. thaliana. Given the deficiency of the VIGE system, ProYao::Cas9 and Pro35S::Cas9 A. thaliana were transformed by fusing 102 bp FT mRNAs with sgRNAs so as to explore the function of Flowering Locus T (FT) gene in delivering sgRNAs into SAM, thus avoiding tissue culture and stably acquiring heritable mutant offspring. Our results showed that sgRNAs fused with FT mRNA at the 5' end (FT strategy) effectively enabled gene editing in infected plants and allowed the acquisition of mutations heritable by the next generation, with an efficiency of 4.35-8.79%. In addition, gene-edited offspring by FT-sgRNAs did not contain any components of the CLCrV genome. CONCLUSIONS FT strategy can be used to acquire heritable mutant offspring avoiding tissue culture and stable transformation based on the CLCrV-mediated VIGE system in A. thaliana.
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Affiliation(s)
- Jianfeng Lei
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China
| | - Peihong Dai
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China
| | - Yue Li
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China
| | - Wanqi Zhang
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China
| | - Guantong Zhou
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China
| | - Chao Liu
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China
| | - Xiaodong Liu
- College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, 311 Nongda East Road, Urumqi, 830052, P.R. China.
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Wu Q, Shou J. Toward precise CRISPR DNA fragment editing and predictable 3D genome engineering. J Mol Cell Biol 2021; 12:828-856. [PMID: 33125070 PMCID: PMC7883824 DOI: 10.1093/jmcb/mjaa060] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023] Open
Abstract
Ever since gene targeting or specific modification of genome sequences in mice was achieved in the early 1980s, the reverse genetic approach of precise editing of any genomic locus has greatly accelerated biomedical research and biotechnology development. In particular, the recent development of the CRISPR/Cas9 system has greatly expedited genetic dissection of 3D genomes. CRISPR gene-editing outcomes result from targeted genome cleavage by ectopic bacterial Cas9 nuclease followed by presumed random ligations via the host double-strand break repair machineries. Recent studies revealed, however, that the CRISPR genome-editing system is precise and predictable because of cohesive Cas9 cleavage of targeting DNA. Here, we synthesize the current understanding of CRISPR DNA fragment-editing mechanisms and recent progress in predictable outcomes from precise genetic engineering of 3D genomes. Specifically, we first briefly describe historical genetic studies leading to CRISPR and 3D genome engineering. We then summarize different types of chromosomal rearrangements by DNA fragment editing. Finally, we review significant progress from precise 1D gene editing toward predictable 3D genome engineering and synthetic biology. The exciting and rapid advances in this emerging field provide new opportunities and challenges to understand or digest 3D genomes.
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Affiliation(s)
- Qiang Wu
- Center for Comparative Biomedicine, MOE Key Lab of Systems Biomedicine, State Key Laboratory of Oncogenes and Related Genes, Institute of Systems Biomedicine, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jia Shou
- Center for Comparative Biomedicine, MOE Key Lab of Systems Biomedicine, State Key Laboratory of Oncogenes and Related Genes, Institute of Systems Biomedicine, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
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Varanda CMR, Félix MDR, Campos MD, Patanita M, Materatski P. Plant Viruses: From Targets to Tools for CRISPR. Viruses 2021; 13:141. [PMID: 33478128 PMCID: PMC7835971 DOI: 10.3390/v13010141] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/15/2021] [Accepted: 01/17/2021] [Indexed: 12/26/2022] Open
Abstract
Plant viruses cause devastating diseases in many agriculture systems, being a serious threat for the provision of adequate nourishment to a continuous growing population. At the present, there are no chemical products that directly target the viruses, and their control rely mainly on preventive sanitary measures to reduce viral infections that, although important, have proved to be far from enough. The current most effective and sustainable solution is the use of virus-resistant varieties, but which require too much work and time to obtain. In the recent years, the versatile gene editing technology known as CRISPR/Cas has simplified the engineering of crops and has successfully been used for the development of viral resistant plants. CRISPR stands for 'clustered regularly interspaced short palindromic repeats' and CRISPR-associated (Cas) proteins, and is based on a natural adaptive immune system that most archaeal and some bacterial species present to defend themselves against invading bacteriophages. Plant viral resistance using CRISPR/Cas technology can been achieved either through manipulation of plant genome (plant-mediated resistance), by mutating host factors required for viral infection; or through manipulation of virus genome (virus-mediated resistance), for which CRISPR/Cas systems must specifically target and cleave viral DNA or RNA. Viruses present an efficient machinery and comprehensive genome structure and, in a different, beneficial perspective, they have been used as biotechnological tools in several areas such as medicine, materials industry, and agriculture with several purposes. Due to all this potential, it is not surprising that viruses have also been used as vectors for CRISPR technology; namely, to deliver CRISPR components into plants, a crucial step for the success of CRISPR technology. Here we discuss the basic principles of CRISPR/Cas technology, with a special focus on the advances of CRISPR/Cas to engineer plant resistance against DNA and RNA viruses. We also describe several strategies for the delivery of these systems into plant cells, focusing on the advantages and disadvantages of the use of plant viruses as vectors. We conclude by discussing some of the constrains faced by the application of CRISPR/Cas technology in agriculture and future prospects.
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Affiliation(s)
- Carla M. R. Varanda
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (M.D.C.); (M.P.)
| | - Maria do Rosário Félix
- MED—Mediterranean Institute for Agriculture, Environment and Development & Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal;
| | - Maria Doroteia Campos
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (M.D.C.); (M.P.)
| | - Mariana Patanita
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (M.D.C.); (M.P.)
| | - Patrick Materatski
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (M.D.C.); (M.P.)
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