scholarly journals Applications of CRISPR/Cas9 System in Vegetatively Propagated Fruit and Berry Crops

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1849
Author(s):  
Anastasia Fizikova ◽  
Nadezhda Tikhonova ◽  
Yulia Ukhatova ◽  
Roman Ivanov ◽  
Elena Khlestkina
Keyword(s):  
Genome Editing ◽  
Agronomic Traits ◽  
Delivery Methods ◽  
Human Diet ◽  
Berry Crops ◽  
Genetic Technologies ◽  
Genomic Editing ◽  
Traditional Approaches ◽  
Genetic Constructs ◽  
Crop Research

Fruit and berry crops, as well as grapes, are important parts of the human diet and, at the same time, significant objects of genetic, breeding, biochemical and nutritional research. Traditional approaches of crop research and improvement are now complemented by effective modern genetic technologies. In this review, we analyze and summarize the achievements in genome editing of fruit, berry crops and grapes. New approaches accelerate the improvement of genotypes for many groups of traits: plant resistance to unfavorable environmental factors, flowering and ripening time, plant architectonics, fruit shelf time and biochemical composition. Genome editing using the CRISPR/Cas9 system has been successfully tested on the most important vegetatively propagated fruit and berry crops (apple, pear, orange, kumquat, grapefruit, banana, strawberry and kiwi) and grapes. About 30 genes of these crops have been used as targets for the introduction of desired mutations using the CRISPR/Cas9 system. The most valuable results are the improvement of important agronomic traits. For 24 genes it has been shown that their knockout can result in the improvement of varieties. In addition, the review pays attention to the comparative analysis of the explant types of vegetatively propagated crops used for the delivery of editing genetic constructs, as well as the comparison of the editing efficiency depending on the variation of the objects used, delivery methods, etc. The article discusses the existing limitations that need to be overcome for a wider application of genomic editing in order to improve varieties of fruit and berry crops, as well as grapes.

scholarly journals Exosome/Liposome-like Nanoparticles: New Carriers for CRISPR Genome Editing in Plants

2021 ◽  
Vol 22 (14) ◽  
pp. 7456
Author(s):  
Mousa A. Alghuthaymi ◽  
Aftab Ahmad ◽  
Zulqurnain Khan ◽  
Sultan Habibullah Khan ◽  
Farah K. Ahmed ◽  
...  
Keyword(s):  
Genome Editing ◽  
Viral Vectors ◽  
Polymeric Materials ◽  
Inorganic Nanoparticles ◽  
Plant Genome ◽  
Delivery Methods ◽  
Detailed Consideration ◽  
Crispr System ◽  
Efficient Delivery ◽  
Low Cytotoxicity

Rapid developments in the field of plant genome editing using clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) systems necessitate more detailed consideration of the delivery of the CRISPR system into plants. Successful and safe editing of plant genomes is partly based on efficient delivery of the CRISPR system. Along with the use of plasmids and viral vectors as cargo material for genome editing, non-viral vectors have also been considered for delivery purposes. These non-viral vectors can be made of a variety of materials, including inorganic nanoparticles, carbon nanotubes, liposomes, and protein- and peptide-based nanoparticles, as well as nanoscale polymeric materials. They have a decreased immune response, an advantage over viral vectors, and offer additional flexibility in their design, allowing them to be functionalized and targeted to specific sites in a biological system with low cytotoxicity. This review is dedicated to describing the delivery methods of CRISPR system into plants with emphasis on the use of non-viral vectors.

scholarly journals Recent advances in CRISPR/Cas9 and applications for wheat functional genomics and breeding

aBIOTECH ◽  
2021 ◽  
Author(s):  
Jun Li ◽  
Yan Li ◽  
Ligeng Ma
Keyword(s):  
Functional Genomics ◽  
Genome Editing ◽  
Functional Annotation ◽  
Genome Engineering ◽  
Agronomic Traits ◽  
Wheat Breeding ◽  
Breeding Programs ◽  
Base Editing ◽  
The World ◽  
World Food Security

AbstractCommon wheat (Triticum aestivum L.) is one of the three major food crops in the world; thus, wheat breeding programs are important for world food security. Characterizing the genes that control important agronomic traits and finding new ways to alter them are necessary to improve wheat breeding. Functional genomics and breeding in polyploid wheat has been greatly accelerated by the advent of several powerful tools, especially CRISPR/Cas9 genome editing technology, which allows multiplex genome engineering. Here, we describe the development of CRISPR/Cas9, which has revolutionized the field of genome editing. In addition, we emphasize technological breakthroughs (e.g., base editing and prime editing) based on CRISPR/Cas9. We also summarize recent applications and advances in the functional annotation and breeding of wheat, and we introduce the production of CRISPR-edited DNA-free wheat. Combined with other achievements, CRISPR and CRISPR-based genome editing will speed progress in wheat biology and promote sustainable agriculture.

Legal support for the creation and use of genetic technologies in medicine

2020 ◽  
pp. 77-78
Author(s):  
В.В. Лапаева
Keyword(s):  
Human Rights ◽  
Great Britain ◽  
Human Genome ◽  
Germ Line ◽  
Genetic Integrity ◽  
Scientific Creativity ◽  
Genetic Technologies ◽  
Genomic Editing ◽  
The Given ◽  
Proper Balance

Правовая политика России в сфере создания и применения генетических технологий в медицине не обеспечивает в должной мере баланс между системой прав человека, гарантирующих защиту его достоинства и охрану здоровья, и свободой научного творчества. Несогласованность этих прав человека проявляется в том, что при отсутствии запретов на исследования с применением технологий наследуемого редактирования генома человека законодательство лишает патентоспособности любые технологии по модификации генетической целостности клеток зародышевой линии человека. Последовательный правовой подход предполагает введение ограничений на возможность геномного редактирования зародышевой линии и запрета на патентование способов такого редактирования, не выходящего за рамки заданных ограничений. При разработке такого похода целесообразно учесть опыт Великобритании. The Russian legal policy in the field of the medicine genetic technologies creation and application does not provide a proper balance between the system of human rights that guarantee the protection of its dignity and health, and the freedom of scientific creativity. The non-coordination of these human rights is manifested in the fact that in the absence of prohibitions on research using technologies of human genome inherited editing, the law deprives patentability of any technology for modifying the genetic integrity of human germline cells. A consistent legal approach involves the restrictions on the possibility of the germ line genomic editing and the prohibition of patenting the methods of such editing, which does not go beyond the given restrictions. It is advisable to take into account the experience of Great Britain.

scholarly journals Genetic Improvement of Cereals and Grain Legumes

Genes ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1255
Author(s):  
Muhammad Amjad Nawaz ◽  
Gyuhwa Chung
Keyword(s):  
Abiotic Stresses ◽  
Genetic Improvement ◽  
Agronomic Traits ◽  
Grain Legumes ◽  
Special Issue ◽  
Biotic And Abiotic Stresses ◽  
Yield Improvement ◽  
Sustainable Food ◽  
Genetic Technologies ◽  
Global Population

The anticipated population growth by 2050 will be coupled with increased food demand. To achieve higher and sustainable food supplies in order to feed the global population by 2050, a 2.4% rise in the yield of major crops is required. The key to yield improvement is a better understanding of the genetic variation and identification of molecular markers, quantitative trait loci, genes, and pathways related to higher yields and increased tolerance to biotic and abiotic stresses. Advances in genetic technologies are enabling plant breeders and geneticists to breed crop plants with improved agronomic traits. This Special Issue is an effort to report the genetic improvements by adapting genomic techniques and genomic selection.

scholarly journals Genetic diversity assessment of sorghum (Sorghum bicolor (L.) Moench) accessions using single nucleotide polymorphism markers

2019 ◽  
Vol 17 (5) ◽  
pp. 412-420
Author(s):  
G. Afolayan ◽  
S. P. Deshpande ◽  
S. E. Aladele ◽  
A. O. Kolawole ◽  
I. Angarawai ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Sorghum Bicolor ◽  
Agronomic Traits ◽  
Crop Improvement ◽  
Single Nucleotide ◽  
Breeding Programs ◽  
Diversity Assessment ◽  
Crop Research ◽  
International Crop Research Institute ◽  
Private Alleles

AbstractSorghum (Sorghum bicolor (L.) Moench) is an important resource to the national economy and it is essential to assess the genetic diversity in existing sorghum germplasm for better conservation, utilization and crop improvement. The aim of this study was to evaluate the level of genetic diversity within and among sorghum germplasms collected from diverse institutes in Nigeria and Mali using Single Nucleotide Polymorphic markers. Genetic diversity among the germplasm was low with an average polymorphism information content value of 0.24. Analysis of Molecular Variation revealed 6% variation among germplasm and 94% within germplasms. Dendrogram revealed three groups of clustering which indicate variations within the germplasms. Private alleles identified in the sorghum accessions from National Center for Genetic Resources and Biotechnology, Ibadan, Nigeria and International Crop Research Institute for the Semi-Arid Tropics, Kano, Nigeria shows their prospect for sorghum improvement and discovery of new agronomic traits. The presence of private alleles and genetic variation within the germplasms indicates that the accessions are valuable resources for future breeding programs.

Recent advances in DNA-free editing and precise base editing in plants

2017 ◽  
Vol 1 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Yi Zhang ◽  
Caixia Gao
Keyword(s):  
Genome Editing ◽  
Genome Engineering ◽  
Point Mutations ◽  
Plant Genome ◽  
The Novel ◽  
Future Perspectives ◽  
Delivery Methods ◽  
Base Editing ◽  
Short Palindromic Repeat ◽  
Target Effects

Genome-editing technologies based on the CRISPR (clustered regularly interspaced short palindromic repeat) system have been widely used in plants to investigate gene function and improve crop traits. The recently developed DNA-free delivery methods and precise base-editing systems provide new opportunities for plant genome engineering. In this review, we describe the novel DNA-free genome-editing methods in plants. These methods reduce off-target effects and may alleviate regulatory concern about genetically modified plants. We also review applications of base-editing systems, which are highly effective in generating point mutations and are of great value for introducing agronomically valuable traits. Future perspectives for DNA-free editing and base editing are also discussed.

scholarly journals Prospects for Knockout of MYB60, a Transcriptional Repressor of Anthocyanin Biosynthesis, in Brassicaceae Plants by Genome Editing

2022 ◽  
Author(s):  
Elena Mikhaylova ◽  
Alexander Artyukhin ◽  
Michael Shein ◽  
Khalit Musin ◽  
Anna Sukhareva ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Genome Editing ◽  
Agronomic Traits ◽  
Anthocyanin Biosynthesis ◽  
Gene Knockout ◽  
Transcriptional Repressor ◽  
Academic Community ◽  
Plant Responses ◽  
Individual Plant ◽  
Brassica Napus L

The Brassicaceae plant family contains many economically important crops such as Brassica napus L., Brassica rapa L., Brassica oleracea L., Brassica juncea L., Eruca sativa Mill., Camelina sativa L. and Raphanus sativus L. Insufficient data on the genetic regulation of agronomic traits in these species complicates the editing of their genomes. In recent years, the attention of the academic community has been drawn to anthocyanin hyperaccumulation. This trait is not only beneficial for human health, but can also increase plant resistance to stress. MYB transcription factors are the main regulators of flavonoid biosynthesis in plants. Some of them are well studied in Arabidopsis thaliana. The AtMYB60 gene is a transcriptional repressor of anthocyanin biosynthesis, and it also negatively impacts plant responses to drought stress. Myb60 is one of the least studied transcription factors with similar functions in Brassicaceae. There is a high degree of homology between predicted MYB60 genes of A. thaliana and related plant species. However, functions of these homologous genes have never been studied. Gene knockout by CRISPR/Cas technology remains the easiest way to perform genome editing in order to discover the role of individual plant genes. Disruption of genes acting as negative regulators of anthocyanin biosynthesis could result in color staining of plant tissues and an increase in stress tolerance. In the present study, we investigated the AtMYB60 gene and its homologs in Brassicaceae plants and suggested universal gRNAs to knockout these genes. Keywords: CRISPR, Brassicaceae, MYB60, knockout, anthocyanin

scholarly journals Update of Regulatory Options of New Breeding Techniques and Biosafety Approaches among Selected Countries: A Review

2020 ◽  
pp. 18-35
Author(s):  
Silas Obukosia ◽  
Olalekan Akinbo ◽  
Woldeyesus Sinebo ◽  
Moussa Savadogo ◽  
Samuel Timpo ◽  
...  
Keyword(s):  
Genome Editing ◽  
Genetically Modified Organisms ◽  
Zinc Finger Nucleases ◽  
Intermediate Step ◽  
Homing Endonucleases ◽  
Transcription Activator ◽  
Associated Proteins ◽  
Genomic Editing ◽  
New Breeding Techniques ◽  
Breeding Techniques

A new set of breeding techniques, referred to as New Breeding Techniques developed in the last two decades have potential for enhancing improved productivity in crop and animal breeding globally. These include site directed nucleases based genomic editing procedures-CRISPR and Cas associated proteins, Zinc Finger Nucleases, Meganucleases/Homing Endonucleases and Transcription- Activator Like-Effector Nucleases for genome editing and other technologies including- Oligonucleotide-Directed Mutagenesis, Cisgenesis and intragenesis, RNA-Dependent DNA methylation; Transgrafting, Agroinfiltration, Reverse breeding. There are ongoing global debates on whether the processes of and products emerging from these technologies should be regulated as genetically modified organisms or approved as conventional products. Decisions on whether to regulate as GMOs are based both on understanding of the molecular basis of their development and if the GMO intermediate step was used. For example- cisgenesis, can be developed using Agrobacterium tumefaciens methods of transformation, a process used by GMO but if the selection is properly conducted the intermediate GMO elements will be eliminated and the final product will be identical to the conventionally developed crops. Others like Site Directed Nuclease 3 are regulated as GMOs in countries such as United State of America, Canada, European Union, Argentina, Australia. Progress in genome editing research, testing of genome edited bacterial blight resistant rice, development of Guidelines for regulating new breeding techniques or genome editing in Africa is also covered with special reference to South Africa, Kenya and Nigeria. Science- and evidence-based approach to regulation of new breeding techniques among regulators and policy makers should be strongly supported.

scholarly journals Cloning, mitochondrial replacement and genome editing: 25 years of ethical debate since Dolly

Reproduction ◽  
2021 ◽  
Author(s):  
Andy Greenfield
Keyword(s):  
Genome Editing ◽  
Assisted Reproductive Technologies ◽  
Reproductive Technologies ◽  
Popular Media ◽  
Reproductive Cloning ◽  
Research And Innovation ◽  
Ethical Debate ◽  
Human Reproductive ◽  
Genetic Technologies ◽  
Mitochondrial Replacement Techniques

The birth of Dolly the sheep in 1996 elicited a tsunami of commentaries, both in the popular media and academic journals, including responses to the prospect of human reproductive cloning. Much of the anxiety expressed over this imagined consequence of Dolly’s genesis revealed fundamental concerns about our losing our commitments to certain ethical goods, such as human dignity, or even ‘what it means to be human’. Over the last 25 years, the focus of much of the ethical debate over human biotechnology has slowly shifted towards other genetic technologies that aim to influence inheritance, such as mitochondrial replacement techniques (MRT) and heritable genome editing. Genome editing, in particular, is a technology with multiple fields of application, actual and potential, in research and innovation. In this review, I suggest that many of the fundamental concerns about the possibility of human reproductive cloning that were precipitated by Dolly persist today in the arguments of those who oppose MRT and any use of heritable human genome editing (HHGE). Whilst I do not accept that an understanding of human nature and dignity alone can demonstrate the ethical unacceptability of such assisted reproductive technologies, there are themes of justice, which extend into our relationships with animals, that demand continued wide-ranging examination and public deliberation. Dolly has cast a long shadow over such discussions, but I suggest that the general existential angst over human uses of biotechnology that she came to symbolise is neither compulsory, nor a reliable guide for how to think about biotechnologies today.

scholarly journals Global divisions of health; bioethical principles, practices and regulations on human genome editing and stem cell research in Latin America

Bionatura ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 895-896
Author(s):  
Abril Saldaña Tejeda
Keyword(s):  
Latin America ◽  
Stem Cell ◽  
Human Genome ◽  
Genome Editing ◽  
Stem Cell Research ◽  
Clinical Care ◽  
Human Enhancement ◽  
Genetic Technologies ◽  
Somatic Genome ◽  
Cell Genome

Recent genetic technologies have uncovered the urgent need for global governance of health that can guarantee an ethical consensus on human genome editing and stem cell research. Although the majority of gene-transfer trials have been located in the Americas and Europe, the regulation of human somatic cell genome editing is generally limited in Latin America and largely informed by ethical concerns about genetically modified plants and animals, biopiracy, biosecurity, and use of stem cells for clinical care. Few jurisdictions in the region (i.e., Chile, Panama, Ecuador, and Colombia) have explicitly addressed somatic genome editing. Jurisdictions often address concerns regarding the use of new biotechnologies (i.e., CRISPR-Cas9) for human “enhancement” purposes rather than the prevention or cure of serious medical conditions 1.

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