A highly efficient regeneration, genetic transformation system and induction of targeted mutations using CRISPR/Cas9 in Lycium ruthenicum
Open Access
- 3 July 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Plant Methods
- Vol. 17 (1), 1-10
- https://doi.org/10.1186/s13007-021-00774-x
Abstract
Background: CRISPR/Cas9 is a rapidly developing genome editing technology in various biological systems due to its efficiency, portability, simplicity and versatility. This editing technology has been successfully applied in in several important plants of Solanaceae such as tomato, tobacco, potato, petunia and groundcherry. Wolfberry ranked the sixth among solanaceous crops of outstanding importance in China following potato, tomato, eggplant, pepper and tobacco. To date, there has been no report on CRISPR/Cas9 technology to improve Lycium ruthenicum due to the unknown genome sequencing and the lack of efficient regeneration and genetic transformation systems. Results: In this study, we have established an efficientregeneration and genetic transformation system of Lycium ruthenicum. We have used this system to validate target sites for fw2.2, a major fruit weight quantitative trait locus first identified from tomato and accounted for 30% of the variation in fruit size. In our experiments, the editing efficiency was very high, with 95.45% of the transgenic lines containing mutations in the fw2.2 target site. We obtained transgenic wolfberry plants containing four homozygous mutations and nine biallelic mutations in the fw2.2 gene. Conclusions: These results suggest that CRISPR-based gene editing is effective for the improvement of black wolfberry traits, and we expect this approach to be routinely applied to this important economic fruit.Keywords
Funding Information
- The World-Class Discipline Construction and Characteristic Development Guidance Funds for Beijing Forestry University (2019XKJS0323)
This publication has 42 references indexed in Scilit:
- Cell number regulator genes in Prunus provide candidate genes for the control of fruit size in sweet and sour cherryMolecular Breeding, 2013
- New stable QTLs for berry weight do not colocalize with QTLs for seed traits in cultivated grapevine (Vitis vinifera L.)BMC Plant Biology, 2013
- CDD: a Conserved Domain Database for the functional annotation of proteinsNucleic Acids Research, 2010
- Cell Number Regulator1Affects Plant and Organ Size in Maize: Implications for Crop Yield Enhancement and HeterosisTHE PLANT CELL ONLINE, 2010
- A member of the highly conserved FWL (tomato FW2.2-like) gene family is essential for soybean nodule organogenesisThe Plant Journal, 2010
- Genetic and molecular regulation of fruit and plant domestication traits in tomato and pepperJournal of Experimental Botany, 2007
- The Genetic, Developmental, and Molecular Bases of Fruit Size and Shape Variation in TomatoTHE PLANT CELL ONLINE, 2004
- The Pfam protein families databaseNucleic Acids Research, 2004
- Analysis of Relative Gene Expression Data Using Real-Time Quantitative PCR and the 2−ΔΔCT MethodMethods, 2001
- fw2.2 : A Quantitative Trait Locus Key to the Evolution of Tomato Fruit SizeScience, 2000