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Onyeziri MC, Hardy GG, Natarajan R, Xu J, Reynolds IP, Kim J, Merritt PM, Danhorn T, Hibbing ME, Weisberg AJ, Chang JH, Fuqua C. Dual adhesive unipolar polysaccharides synthesized by overlapping biosynthetic pathways in Agrobacterium tumefaciens. Mol Microbiol 2022; 117:1023-1047. [PMID: 35191101 PMCID: PMC9149101 DOI: 10.1111/mmi.14887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 01/28/2022] [Accepted: 02/07/2022] [Indexed: 11/29/2022]
Abstract
Agrobacterium tumefaciens is a member of the Alphaproteobacteria that pathogenises plants and associates with biotic and abiotic surfaces via a single cellular pole. A. tumefaciens produces the unipolar polysaccharide (UPP) at the site of surface contact. UPP production is normally surface-contact inducible, but elevated levels of the second messenger cyclic diguanylate monophosphate (cdGMP) bypass this requirement. Multiple lines of evidence suggest that the UPP has a central polysaccharide component. Using an A. tumefaciens derivative with elevated cdGMP and mutationally disabled for other dispensable polysaccharides, a series of related genetic screens have identified a large number of genes involved in UPP biosynthesis, most of which are Wzx-Wzy-type polysaccharide biosynthetic components. Extensive analyses of UPP production in these mutants have revealed that the UPP is composed of two genetically, chemically, and spatially discrete forms of polysaccharide, and that each requires a specific Wzy-type polymerase. Other important biosynthetic, processing, and regulatory functions for UPP production are also revealed, some of which are common to both polysaccharides, and a subset of which are specific to each type. Many of the UPP genes identified are conserved among diverse rhizobia, whereas others are more lineage specific.
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Affiliation(s)
| | - Gail G. Hardy
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Ramya Natarajan
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Jing Xu
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Ian P. Reynolds
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Jinwoo Kim
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Peter M. Merritt
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Thomas Danhorn
- Department of Biology, Indiana University, Bloomington, IN 47405
| | | | - Alexandra J. Weisberg
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331
| | - Jeff H. Chang
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331
| | - Clay Fuqua
- Department of Biology, Indiana University, Bloomington, IN 47405
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Pankratov TA, Nikitin PA, Patutina EO. Genome Analysis of Two Lichen Bacteriobionts, Lichenibacterium ramalinae and Lichenibacterium minor: Toxin‒Antitoxin Systems and Secretion Proteins. Microbiology (Reading) 2022. [DOI: 10.1134/s0026261722020096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Thompson MG, Moore WM, Hummel NFC, Pearson AN, Barnum CR, Scheller HV, Shih PM. Agrobacterium tumefaciens: A Bacterium Primed for Synthetic Biology. BIODESIGN RESEARCH 2020; 2020:8189219. [PMID: 37849895 PMCID: PMC10530663 DOI: 10.34133/2020/8189219] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 04/26/2020] [Indexed: 10/19/2023] Open
Abstract
Agrobacterium tumefaciens is an important tool in plant biotechnology due to its natural ability to transfer DNA into the genomes of host plants. Genetic manipulations of A. tumefaciens have yielded considerable advances in increasing transformational efficiency in a number of plant species and cultivars. Moreover, there is overwhelming evidence that modulating the expression of various mediators of A. tumefaciens virulence can lead to more successful plant transformation; thus, the application of synthetic biology to enable targeted engineering of the bacterium may enable new opportunities for advancing plant biotechnology. In this review, we highlight engineering targets in both A. tumefaciens and plant hosts that could be exploited more effectively through precision genetic control to generate high-quality transformation events in a wider range of host plants. We then further discuss the current state of A. tumefaciens and plant engineering with regard to plant transformation and describe how future work may incorporate a rigorous synthetic biology approach to tailor strains of A. tumefaciens used in plant transformation.
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Affiliation(s)
- Mitchell G. Thompson
- Joint BioEnergy Institute, Emeryville, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Plant Biology, University of California-Davis, Davis, CA, USA
| | - William M. Moore
- Joint BioEnergy Institute, Emeryville, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Plant and Microbial Biology, University of California-Berkeley, Berkeley, CA, USA
| | - Niklas F. C. Hummel
- Joint BioEnergy Institute, Emeryville, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Plant Biology, University of California-Davis, Davis, CA, USA
| | - Allison N. Pearson
- Joint BioEnergy Institute, Emeryville, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Collin R. Barnum
- Department of Plant Biology, University of California-Davis, Davis, CA, USA
| | - Henrik V. Scheller
- Joint BioEnergy Institute, Emeryville, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Plant and Microbial Biology, University of California-Berkeley, Berkeley, CA, USA
| | - Patrick M. Shih
- Joint BioEnergy Institute, Emeryville, CA, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Plant Biology, University of California-Davis, Davis, CA, USA
- Genome Center, University of California-Davis, Davis, CA, USA
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Meyer T, Thiour-Mauprivez C, Wisniewski-Dyé F, Kerzaon I, Comte G, Vial L, Lavire C. Ecological Conditions and Molecular Determinants Involved in Agrobacterium Lifestyle in Tumors. FRONTIERS IN PLANT SCIENCE 2019; 10:978. [PMID: 31417593 PMCID: PMC6683767 DOI: 10.3389/fpls.2019.00978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/11/2019] [Indexed: 05/07/2023]
Abstract
The study of pathogenic agents in their natural niches allows for a better understanding of disease persistence and dissemination. Bacteria belonging to the Agrobacterium genus are soil-borne and can colonize the rhizosphere. These bacteria are also well known as phytopathogens as they can cause tumors (crown gall disease) by transferring a DNA region (T-DNA) into a wide range of plants. Most reviews on Agrobacterium are focused on virulence determinants, T-DNA integration, bacterial and plant factors influencing the efficiency of genetic transformation. Recent research papers have focused on the plant tumor environment on the one hand, and genetic traits potentially involved in bacterium-plant interactions on the other hand. The present review gathers current knowledge about the special conditions encountered in the tumor environment along with the Agrobacterium genetic determinants putatively involved in bacterial persistence inside a tumor. By integrating recent metabolomic and transcriptomic studies, we describe how tumors develop and how Agrobacterium can maintain itself in this nutrient-rich but stressful and competitive environment.
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Affiliation(s)
- Thibault Meyer
- UMR Ecologie Microbienne, CNRS, INRA, VetAgro Sup, UCBL, Université de Lyon, Lyon, France
| | - Clémence Thiour-Mauprivez
- UMR Ecologie Microbienne, CNRS, INRA, VetAgro Sup, UCBL, Université de Lyon, Lyon, France
- Biocapteurs-Analyses-Environment, Universite de Perpignan Via Domitia, Perpignan, France
- Laboratoire de Biodiversite et Biotechnologies Microbiennes, USR 3579 Sorbonne Universites (UPMC) Paris 6 et CNRS Observatoire Oceanologique, Paris, France
| | | | - Isabelle Kerzaon
- UMR Ecologie Microbienne, CNRS, INRA, VetAgro Sup, UCBL, Université de Lyon, Lyon, France
| | - Gilles Comte
- UMR Ecologie Microbienne, CNRS, INRA, VetAgro Sup, UCBL, Université de Lyon, Lyon, France
| | - Ludovic Vial
- UMR Ecologie Microbienne, CNRS, INRA, VetAgro Sup, UCBL, Université de Lyon, Lyon, France
| | - Céline Lavire
- UMR Ecologie Microbienne, CNRS, INRA, VetAgro Sup, UCBL, Université de Lyon, Lyon, France
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