A Carotenoid-Deficient Mutant in Pantoea sp. YR343, a Bacteria Isolated from the Rhizosphere of Populus deltoides, Is Defective in Root Colonization
Abstract
The complex interactions between plants and their microbiome can have a profound effect on the health and productivity of the plant host. A better understanding of the microbial mechanisms that promote plant health and stress tolerance will enable strategies for improving the productivity of economically-important plants. Pantoea sp. YR343 is a motile, rod-shaped bacterium isolated from the roots of Populus deltoides that possesses the ability to solubilize phosphate and produce the phytohormone indole-3-acetic acid. Pantoea sp. YR343 readily colonizes plant roots and does not appear to be pathogenic when applied to the leaves or roots of selected plant hosts. To better understand the molecular mechanisms involved in plant association and rhizosphere survival by Pantoea sp. YR343, we constructed a mutant in which the crtB gene encoding phytoene synthase was deleted. Phytoene synthase is responsible for converting geranylgeranyl pyrophosphate to phytoene, an important precursor to the production of carotenoids. As predicted, the ΔcrtB mutant is defective in carotenoid production, and shows increased sensitivity to oxidative stress. Moreover, we find that the ΔcrtB mutant is impaired in biofilm formation and production of indole-3-acetic acid. Finally we demonstrate that the ΔcrtB mutant shows reduced colonization of plant roots. Taken together, these data suggestmore »
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
- Univ. of Notre Dame, IN (United States). Department of Chemical and Biomolecular Engineering
- Univ. of Pretoria, Pretoria (South Africa)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1248782
- Grant/Contract Number:
- AC05-00OR22725; SC0006642
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Frontiers in Microbiology
- Additional Journal Information:
- Journal Volume: 7; Journal ID: ISSN 1664-302X
- Publisher:
- Frontiers Research Foundation
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; Pantoea; carotenoids; crtB; indole-3-acetic acid; poplar; rhizosphere; zeaxanthin
Citation Formats
Bible, Amber, Fletcher, Sarah J, Pelletier, Dale A, Schadt, Christopher Warren, Jawdy, Sara, Weston, David, Engle, Nancy L., Tschaplinski, Timothy J., Masyuko, Rachel, Polisetti, Sneha, Bohn, Paul W., Coutinho, Teresa, Doktycz, Mitchel John, and Morrell-Falvey, Jennifer L. A Carotenoid-Deficient Mutant in Pantoea sp. YR343, a Bacteria Isolated from the Rhizosphere of Populus deltoides, Is Defective in Root Colonization. United States: N. p., 2016.
Web. doi:10.3389/fmicb.2016.00491.
Bible, Amber, Fletcher, Sarah J, Pelletier, Dale A, Schadt, Christopher Warren, Jawdy, Sara, Weston, David, Engle, Nancy L., Tschaplinski, Timothy J., Masyuko, Rachel, Polisetti, Sneha, Bohn, Paul W., Coutinho, Teresa, Doktycz, Mitchel John, & Morrell-Falvey, Jennifer L. A Carotenoid-Deficient Mutant in Pantoea sp. YR343, a Bacteria Isolated from the Rhizosphere of Populus deltoides, Is Defective in Root Colonization. United States. https://doi.org/10.3389/fmicb.2016.00491
Bible, Amber, Fletcher, Sarah J, Pelletier, Dale A, Schadt, Christopher Warren, Jawdy, Sara, Weston, David, Engle, Nancy L., Tschaplinski, Timothy J., Masyuko, Rachel, Polisetti, Sneha, Bohn, Paul W., Coutinho, Teresa, Doktycz, Mitchel John, and Morrell-Falvey, Jennifer L. Mon .
"A Carotenoid-Deficient Mutant in Pantoea sp. YR343, a Bacteria Isolated from the Rhizosphere of Populus deltoides, Is Defective in Root Colonization". United States. https://doi.org/10.3389/fmicb.2016.00491. https://www.osti.gov/servlets/purl/1248782.
@article{osti_1248782,
title = {A Carotenoid-Deficient Mutant in Pantoea sp. YR343, a Bacteria Isolated from the Rhizosphere of Populus deltoides, Is Defective in Root Colonization},
author = {Bible, Amber and Fletcher, Sarah J and Pelletier, Dale A and Schadt, Christopher Warren and Jawdy, Sara and Weston, David and Engle, Nancy L. and Tschaplinski, Timothy J. and Masyuko, Rachel and Polisetti, Sneha and Bohn, Paul W. and Coutinho, Teresa and Doktycz, Mitchel John and Morrell-Falvey, Jennifer L.},
abstractNote = {The complex interactions between plants and their microbiome can have a profound effect on the health and productivity of the plant host. A better understanding of the microbial mechanisms that promote plant health and stress tolerance will enable strategies for improving the productivity of economically-important plants. Pantoea sp. YR343 is a motile, rod-shaped bacterium isolated from the roots of Populus deltoides that possesses the ability to solubilize phosphate and produce the phytohormone indole-3-acetic acid. Pantoea sp. YR343 readily colonizes plant roots and does not appear to be pathogenic when applied to the leaves or roots of selected plant hosts. To better understand the molecular mechanisms involved in plant association and rhizosphere survival by Pantoea sp. YR343, we constructed a mutant in which the crtB gene encoding phytoene synthase was deleted. Phytoene synthase is responsible for converting geranylgeranyl pyrophosphate to phytoene, an important precursor to the production of carotenoids. As predicted, the ΔcrtB mutant is defective in carotenoid production, and shows increased sensitivity to oxidative stress. Moreover, we find that the ΔcrtB mutant is impaired in biofilm formation and production of indole-3-acetic acid. Finally we demonstrate that the ΔcrtB mutant shows reduced colonization of plant roots. Taken together, these data suggest that carotenoids are important for plant association and/or rhizosphere survival in Pantoea sp. YR343.},
doi = {10.3389/fmicb.2016.00491},
journal = {Frontiers in Microbiology},
number = ,
volume = 7,
place = {United States},
year = {Mon Apr 18 00:00:00 EDT 2016},
month = {Mon Apr 18 00:00:00 EDT 2016}
}
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