Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes
Lipopolysaccharides (LPSs) are major components of the outer membrane of Gram-negative bacteria and are essential for their growth and survival. They act as a structural barrier and play an important role in the interaction with eukaryotic hosts. Here we demonstrate that a photosynthetic Bradyrhizobium strain, symbiont of Aeschynomene legumes, synthesizes a unique LPS bearing a hopanoid covalently attached to lipid A. Biophysical analyses of reconstituted liposomes indicate that this hopanoid-lipid A structure reinforces the stability and rigidity of the outer membrane. In addition, the bacterium produces other hopanoid molecules not linked to LPS. A hopanoid-deficient strain, lacking a squalene hopene cyclase, displays increased sensitivity to stressful conditions and reduced ability to survive intracellularly in the host plant. This unusual combination of hopanoid and LPS molecules may represent an adaptation to optimize bacterial survival in both free-living and symbiotic states.
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
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Subjects: | F62 - Physiologie végétale - Croissance et développement, F01 - Culture des plantes, Bradyrhizobium, symbiose, Aeschynomene, bactérie gram négatif, lipopolysaccharide, bactériologie, physiologie, membrane cellulaire, stress, http://aims.fao.org/aos/agrovoc/c_27138, http://aims.fao.org/aos/agrovoc/c_7563, http://aims.fao.org/aos/agrovoc/c_159, http://aims.fao.org/aos/agrovoc/c_3352, http://aims.fao.org/aos/agrovoc/c_24045, http://aims.fao.org/aos/agrovoc/c_768, http://aims.fao.org/aos/agrovoc/c_49881, http://aims.fao.org/aos/agrovoc/c_9693, http://aims.fao.org/aos/agrovoc/c_7452, |
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dig-cirad-fr-5743312024-01-28T22:17:50Z http://agritrop.cirad.fr/574331/ http://agritrop.cirad.fr/574331/ Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes. Silipo Alba, Vitiello Giuseppe, Gully Djamel, Sturiale Luisa, Chaintreuil Clémence, Fardoux Joël, Gargani Daniel, Lee Hae-In, Kulkarni Gargi, Busset Nicolas, Marchetti Roberta, Palmigiano Angelo, Moll Herman, Engel Regina, Lanzetta Rosa, Paduano Luigi, Parrilli Michelangelo, Chang Woo-Suk, Holst Otto, Newman Dianne K., Garozzo Domenico, D'Errico Gerardino, Giraud Eric, Molinaro Antonio. 2014. Nature Communications, 5 (5106), 11 p.https://doi.org/10.1038/ncomms6106 <https://doi.org/10.1038/ncomms6106> Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes Silipo, Alba Vitiello, Giuseppe Gully, Djamel Sturiale, Luisa Chaintreuil, Clémence Fardoux, Joël Gargani, Daniel Lee, Hae-In Kulkarni, Gargi Busset, Nicolas Marchetti, Roberta Palmigiano, Angelo Moll, Herman Engel, Regina Lanzetta, Rosa Paduano, Luigi Parrilli, Michelangelo Chang, Woo-Suk Holst, Otto Newman, Dianne K. Garozzo, Domenico D'Errico, Gerardino Giraud, Eric Molinaro, Antonio eng 2014 Nature Communications F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Bradyrhizobium symbiose Aeschynomene bactérie gram négatif lipopolysaccharide bactériologie physiologie membrane cellulaire stress http://aims.fao.org/aos/agrovoc/c_27138 http://aims.fao.org/aos/agrovoc/c_7563 http://aims.fao.org/aos/agrovoc/c_159 http://aims.fao.org/aos/agrovoc/c_3352 http://aims.fao.org/aos/agrovoc/c_24045 http://aims.fao.org/aos/agrovoc/c_768 http://aims.fao.org/aos/agrovoc/c_49881 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_7452 Lipopolysaccharides (LPSs) are major components of the outer membrane of Gram-negative bacteria and are essential for their growth and survival. They act as a structural barrier and play an important role in the interaction with eukaryotic hosts. Here we demonstrate that a photosynthetic Bradyrhizobium strain, symbiont of Aeschynomene legumes, synthesizes a unique LPS bearing a hopanoid covalently attached to lipid A. Biophysical analyses of reconstituted liposomes indicate that this hopanoid-lipid A structure reinforces the stability and rigidity of the outer membrane. In addition, the bacterium produces other hopanoid molecules not linked to LPS. A hopanoid-deficient strain, lacking a squalene hopene cyclase, displays increased sensitivity to stressful conditions and reduced ability to survive intracellularly in the host plant. This unusual combination of hopanoid and LPS molecules may represent an adaptation to optimize bacterial survival in both free-living and symbiotic states. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/574331/1/document_574331.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1038/ncomms6106 10.1038/ncomms6106 info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms6106 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1038/ncomms6106 |
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F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Bradyrhizobium symbiose Aeschynomene bactérie gram négatif lipopolysaccharide bactériologie physiologie membrane cellulaire stress http://aims.fao.org/aos/agrovoc/c_27138 http://aims.fao.org/aos/agrovoc/c_7563 http://aims.fao.org/aos/agrovoc/c_159 http://aims.fao.org/aos/agrovoc/c_3352 http://aims.fao.org/aos/agrovoc/c_24045 http://aims.fao.org/aos/agrovoc/c_768 http://aims.fao.org/aos/agrovoc/c_49881 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_7452 F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Bradyrhizobium symbiose Aeschynomene bactérie gram négatif lipopolysaccharide bactériologie physiologie membrane cellulaire stress http://aims.fao.org/aos/agrovoc/c_27138 http://aims.fao.org/aos/agrovoc/c_7563 http://aims.fao.org/aos/agrovoc/c_159 http://aims.fao.org/aos/agrovoc/c_3352 http://aims.fao.org/aos/agrovoc/c_24045 http://aims.fao.org/aos/agrovoc/c_768 http://aims.fao.org/aos/agrovoc/c_49881 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_7452 |
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F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Bradyrhizobium symbiose Aeschynomene bactérie gram négatif lipopolysaccharide bactériologie physiologie membrane cellulaire stress http://aims.fao.org/aos/agrovoc/c_27138 http://aims.fao.org/aos/agrovoc/c_7563 http://aims.fao.org/aos/agrovoc/c_159 http://aims.fao.org/aos/agrovoc/c_3352 http://aims.fao.org/aos/agrovoc/c_24045 http://aims.fao.org/aos/agrovoc/c_768 http://aims.fao.org/aos/agrovoc/c_49881 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_7452 F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Bradyrhizobium symbiose Aeschynomene bactérie gram négatif lipopolysaccharide bactériologie physiologie membrane cellulaire stress http://aims.fao.org/aos/agrovoc/c_27138 http://aims.fao.org/aos/agrovoc/c_7563 http://aims.fao.org/aos/agrovoc/c_159 http://aims.fao.org/aos/agrovoc/c_3352 http://aims.fao.org/aos/agrovoc/c_24045 http://aims.fao.org/aos/agrovoc/c_768 http://aims.fao.org/aos/agrovoc/c_49881 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_7452 Silipo, Alba Vitiello, Giuseppe Gully, Djamel Sturiale, Luisa Chaintreuil, Clémence Fardoux, Joël Gargani, Daniel Lee, Hae-In Kulkarni, Gargi Busset, Nicolas Marchetti, Roberta Palmigiano, Angelo Moll, Herman Engel, Regina Lanzetta, Rosa Paduano, Luigi Parrilli, Michelangelo Chang, Woo-Suk Holst, Otto Newman, Dianne K. Garozzo, Domenico D'Errico, Gerardino Giraud, Eric Molinaro, Antonio Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes |
description |
Lipopolysaccharides (LPSs) are major components of the outer membrane of Gram-negative bacteria and are essential for their growth and survival. They act as a structural barrier and play an important role in the interaction with eukaryotic hosts. Here we demonstrate that a photosynthetic Bradyrhizobium strain, symbiont of Aeschynomene legumes, synthesizes a unique LPS bearing a hopanoid covalently attached to lipid A. Biophysical analyses of reconstituted liposomes indicate that this hopanoid-lipid A structure reinforces the stability and rigidity of the outer membrane. In addition, the bacterium produces other hopanoid molecules not linked to LPS. A hopanoid-deficient strain, lacking a squalene hopene cyclase, displays increased sensitivity to stressful conditions and reduced ability to survive intracellularly in the host plant. This unusual combination of hopanoid and LPS molecules may represent an adaptation to optimize bacterial survival in both free-living and symbiotic states. |
format |
article |
topic_facet |
F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Bradyrhizobium symbiose Aeschynomene bactérie gram négatif lipopolysaccharide bactériologie physiologie membrane cellulaire stress http://aims.fao.org/aos/agrovoc/c_27138 http://aims.fao.org/aos/agrovoc/c_7563 http://aims.fao.org/aos/agrovoc/c_159 http://aims.fao.org/aos/agrovoc/c_3352 http://aims.fao.org/aos/agrovoc/c_24045 http://aims.fao.org/aos/agrovoc/c_768 http://aims.fao.org/aos/agrovoc/c_49881 http://aims.fao.org/aos/agrovoc/c_9693 http://aims.fao.org/aos/agrovoc/c_7452 |
author |
Silipo, Alba Vitiello, Giuseppe Gully, Djamel Sturiale, Luisa Chaintreuil, Clémence Fardoux, Joël Gargani, Daniel Lee, Hae-In Kulkarni, Gargi Busset, Nicolas Marchetti, Roberta Palmigiano, Angelo Moll, Herman Engel, Regina Lanzetta, Rosa Paduano, Luigi Parrilli, Michelangelo Chang, Woo-Suk Holst, Otto Newman, Dianne K. Garozzo, Domenico D'Errico, Gerardino Giraud, Eric Molinaro, Antonio |
author_facet |
Silipo, Alba Vitiello, Giuseppe Gully, Djamel Sturiale, Luisa Chaintreuil, Clémence Fardoux, Joël Gargani, Daniel Lee, Hae-In Kulkarni, Gargi Busset, Nicolas Marchetti, Roberta Palmigiano, Angelo Moll, Herman Engel, Regina Lanzetta, Rosa Paduano, Luigi Parrilli, Michelangelo Chang, Woo-Suk Holst, Otto Newman, Dianne K. Garozzo, Domenico D'Errico, Gerardino Giraud, Eric Molinaro, Antonio |
author_sort |
Silipo, Alba |
title |
Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes |
title_short |
Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes |
title_full |
Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes |
title_fullStr |
Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes |
title_full_unstemmed |
Covalently linked hopanoid-lipid A improves outer-membrane resistance of a Bradyrhizobium symbiont of legumes |
title_sort |
covalently linked hopanoid-lipid a improves outer-membrane resistance of a bradyrhizobium symbiont of legumes |
url |
http://agritrop.cirad.fr/574331/ http://agritrop.cirad.fr/574331/1/document_574331.pdf |
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