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Rhizobium meliloti lipooligosaccharide nodulation factors: different structural requirements for bacterial entry into target root hair cells and induction of plant symbiotic developmental responses

by Laboratoire de Biologie moléculaire des relations plantes-microorganismes ; Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) , Debellé, Frederic , Denarié, Jean , Maillet, Fabienne , de Billy, Françoise , Demont, N , Truchet, G , Prome, J.C , Ardourel, M

in Alfalfa / Biological Assay / Carbohydrate Sequence / Cell Communication / Cell Communication - physiology / cell differentiation / chemistry / CORTEX / cytology / DIFERENCIACION CELULAR / DIFFERENCIATION CELLULAIRE / Ensifer meliloti / Epidermal cells / Fatty acids / FORMATION DE NODOSITES / Genes, Bacterial / Genetics / Infections / Life Sciences / LIPOPOLISACARIDOS / LIPOPOLYSACCHARIDE / lipopolysaccharides / Lipopolysaccharides - chemistry / Lipopolysaccharides - metabolism / Mass Spectrometry / MEDICAGO SATIVA / Medicago sativa - microbiology / metabolism / microbiology / Models, Biological / Molecular Sequence Data / MUTANT / MUTANTES / mutants / Mutation / NODULACION / Nodulation / Nodules / OLIGOSACARIDOS / OLIGOSACCHARIDE / oligosaccharides / Oligosaccharides - chemistry / Oligosaccharides - genetics / Oligosaccharides - metabolism / PELOS RADICALES / physiology / Plant cells / Plant Roots / Plant Roots - cytology / Plant Roots - microbiology / Plants / Plants genetics / POIL ABSORBANT / RACINE / RAICES / Receptors, Cell Surface / RHIZOBIUM MELILOTI / Root hairs / Sinorhizobium meliloti / Sinorhizobium meliloti - genetics / Sinorhizobium meliloti - physiology / Species Specificity / structure-activity relationships / Symbiosis / Symbiosis - genetics / Symbiosis - physiology

1994

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Rhizobium meliloti lipooligosaccharide nodulation factors: different structural requirements for bacterial entry into target root hair cells and induction of plant symbiotic developmental responses

1994

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Rhizobium meliloti lipooligosaccharide nodulation factors: different structural requirements for bacterial entry into target root hair cells and induction of plant symbiotic developmental responses

1994

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Journal Article

Rhizobium meliloti lipooligosaccharide nodulation factors: different structural requirements for bacterial entry into target root hair cells and induction of plant symbiotic developmental responses

Laboratoire de Biologie moléculaire des relations plantes-microorganismes ; Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS),

Debellé, Frederic,

Denarié, Jean,

Maillet, Fabienne,

de Billy, Françoise,

Demont, N,

Truchet, G,

Prome, J.C,

Ardourel, M

1994

Overview

Rhizobium meliloti produces lipochitooligosaccharide nodulation NodRm factors that are required for nodulation of legume hosts. NodRm factors are O-acetylated and N-acylated by specific C16-unsaturated fatty acids. nodL mutants produce non-O-acetylated factors, and nodFE mutants produce factors with modified acyl substituents. Both mutants exhibited a significantly reduced capacity to elicit infection thread (IT) formation in alfalfa. However, once initiated, ITs developed and allowed the formation of nitrogen-fixing nodules. In contrast, double nodF/nodL mutants were unable to penetrate into legume hosts and to form ITs. Nevertheless, these mutants induced widespread cell wall tip growth in trichoblasts and other epidermal cells and were also able to elicit cortical cell activation at a distance. NodRm factor structural requirements are thus clearly more stringent for bacterial entry than for the elicitation of developmental plant responses

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Publisher

American Society of Plant Biologists (ASPB),HAL CCSD,American Society of Plant Physiologists

Subject

Alfalfa

/ Biological Assay

/ Carbohydrate Sequence

/ Cell Communication

/ Cell Communication - physiology

/ cell differentiation

/ chemistry