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Title: Binary vector copy number engineering improves Agrobacterium-mediated transformation

Journal Article · · Nature Biotechnology

Abstract The copy number of a plasmid is linked to its functionality, yet there have been few attempts to optimize higher-copy-number mutants for use across diverse origins of replication in different hosts. We use a high-throughput growth-coupled selection assay and a directed evolution approach to rapidly identify origin of replication mutations that influence copy number and screen for mutants that improve Agrobacterium -mediated transformation (AMT) efficiency. By introducing these mutations into binary vectors within the plasmid backbone used for AMT, we observe improved transient transformation of Nicotiana benthamiana in four diverse tested origins (pVS1, RK2, pSa and BBR1). For the best-performing origin, pVS1, we isolate higher-copy-number variants that increase stable transformation efficiencies by 60–100% in Arabidopsis thaliana and 390% in the oleaginous yeast Rhodosporidium toruloides . Our work provides an easily deployable framework to generate plasmid copy number variants that will enable greater precision in prokaryotic genetic engineering, in addition to improving AMT efficiency.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Institutes of Health (NIH); National Science Foundation (NSF); US Department of Agriculture (USDA); USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2476085
Journal Information:
Nature Biotechnology, Journal Name: Nature Biotechnology; ISSN 1087-0156
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (49)

Engineering Rhodosporidium toruloides for increased lipid production : Engineering journal November 2015
Ti plasmid vector for the introduction of DNA into plant cells without alteration of their normal regeneration capacity journal December 1983
Low- and intermediate-copy-number cloning vectors based on thePseudomonas plasmid pVS1 journal January 1988
Effect of Agrobacterium strain and plasmid copy number on transformation frequency, event quality and usable event quality in an elite maize cultivar journal January 2015
Genetic tools for reliable gene expression and recombineering in Pseudomonas putida journal January 2018
An improved ternary vector system for Agrobacterium-mediated rapid maize transformation journal April 2018
A simplified and efficient Agrobacterium tumefaciens electroporation method journal February 2018
Mutations in the gene encoding the replication-initiation protein of plasmid RK2 produce elevated copy numbers of RK2 derivatives in Escherichia coli and distantly related bacteria journal October 1993
Annotation of plasmid genes journal May 2017
Directed evolution of copy number of a broad host range plasmid for metabolic engineering journal January 2005
A Suite of Constitutive Promoters for Tuning Gene Expression in Plants journal April 2023
j5 DNA Assembly Design Automation Software journal December 2011
Agrobacterium tumefaciens-mediated transformation of filamentous fungi journal September 1998
Enzymatic assembly of DNA molecules up to several hundred kilobases journal April 2009
Fast gapped-read alignment with Bowtie 2 journal March 2012
A reporter for noninvasively monitoring gene expression and plant transformation journal September 2020
A plasmid system with tunable copy number journal July 2022
Design of orthogonal regulatory systems for modulating gene expression in plants journal May 2020
Isolation and characterization of novel mutations in the pSC101 origin that increase copy number journal January 2018
Increasing Cas9-mediated homology-directed repair efficiency through covalent tethering of DNA repair template journal May 2018
The effect of temperature on Agrobacterium tumefaciens‐mediated gene transfer to plants journal December 1997
Floral dip: a simplified method for Agrobacterium-mediated transformation of Arabidopsis thaliana journal December 1998
Genetic transformation of HeLa cells by Agrobacterium journal February 2001
Trimmomatic: a flexible trimmer for Illumina sequence data journal April 2014
Directed evolution of colE1 plasmid replication compatibility: a fast tractable tunable model for investigating biological orthogonality journal August 2022
DoriC 12.0: an updated database of replication origins in both complete and draft prokaryotic genomes journal October 2022
Design, implementation and practice of JBEI-ICE: an open source biological part registry platform and tools journal June 2012
Small, Stable Shuttle Vectors Based on the Minimal pVS1 Replicon for Use in Gram-Negative, Plant-Associated Bacteria journal February 2000
Genetically refactored Agrobacterium-mediated transformation preprint October 2023
T-DNA Binary Vectors and Systems journal February 2008
Generation of Backbone-Free, Low Transgene Copy Plants by Launching T-DNA from the Agrobacterium Chromosome journal December 2009
Negative regulation of pPS10 plasmid replication: origin pairing by zipping‐up DNA‐bound RepA monomers journal February 2008
A contemporary reassessment of the enhanced transient expression system based on the tombusviral silencing suppressor protein P19 journal December 2022
Replication and Control of Circular Bacterial Plasmids journal June 1998
Agrobacterium-Mediated Plant Transformation: the Biology behind the "Gene-Jockeying" Tool journal March 2003
Transcriptional regulation of the virA and virG genes of Agrobacterium tumefaciens journal September 1988
Mutations in the trfA replication gene of the broad-host-range plasmid RK2 result in elevated plasmid copy numbers. journal January 1990
Transcriptome architecture of the three main lineages of agrobacteria journal July 2023
The pGinger Family of Expression Plasmids journal June 2023
BglBrick vectors and datasheets: A synthetic biology platform for gene expression journal January 2011
DeviceEditor visual biological CAD canvas journal December 2012
Conversion of poplar biomass into high-energy density tricyclic sesquiterpene jet fuel blendstocks journal November 2020
Agrobacterium -Mediated Plant Transformation: Biology and Applications journal January 2017
A One Pot, One Step, Precision Cloning Method with High Throughput Capability journal November 2008
RepB C-terminus mutation of a pRi-repABC binary vector affects plasmid copy number in Agrobacterium and transgene copy number in plants journal November 2018
Characterization of copy number mutants of plasmid pSC101. journal January 1997
Homology-Directed Repair of a Defective Glabrous Gene in Arabidopsis With Cas9-Based Gene Targeting journal April 2018
Agrobacterium tumefaciens : A Bacterium Primed for Synthetic Biology journal January 2020
Review: Plant Binary Vectors of Ti Plasmid in Agrobacterium tumefaciens with a Broad Host-Range Replicon of pRK2, pRi, pSa or pVS1 journal January 2013