The evolution of nodulation

Gualtieri, G.; Bisseling, Ton

doi:10.1007/978-94-011-4221-2_9

Cited by 47 publications

(53 citation statements)

References 67 publications

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“…Rhizobia include diverse bacterial species classified into 13 genera such as Rhizobium (Allorhizobium), Azorhizobium, Bradyrhizobium, Burkholderia, Cupriavidus (Ralstonia), Devosia, Herbaspirillum, Mesorhizobium, Methylobacterium, Ochrobactrum, Phyllobacterium, Shinella and Sinorhizobium (Ensifer) (42,68,104). Free-living nitrogen-fixing ability is limited to several exceptional bacteria.…”

Section: Determinants Of Rhizobium Symbiosismentioning

confidence: 99%

The Determinants of the Actinorhizal Symbiosis

Kucho

Hay²,

Normand³

2010

Microb. Environ.

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The actinorhizal symbiosis is a major contributor to the global nitrogen budget, playing a dominant role in ecological successions following disturbances. The mechanisms involved are still poorly known but there emerges the vision that on the plant side, the kinases that transmit the symbiotic signal are conserved with those involved in the transmission of the Rhizobium Nod signal in legumes. However, on the microbial side, complementation with Frankia DNA of Rhizobium nod mutants failed to permit identification of symbiotic genes. Furthermore, analysis of three Frankia genomes failed to permit identification of canonical nod genes and revealed symbiosis-associated genes such as nif, hup, suf and shc to be spread around the genomes. The present review explores some recently published approaches aimed at identifying bacterial symbiotic determinants.

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Section: Determinants Of Rhizobium Symbiosismentioning

confidence: 99%

The Determinants of the Actinorhizal Symbiosis

Kucho

Hay²,

Normand³

2010

Microb. Environ.

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“…Under conditions of limiting soil nitrogen, legumes can be infected by bacteria of the Rhizobiaceae family, resulting in the development of a symbiotic nitrogen-fixing organ, the nodule (reviewed by Gualtieri and Bisseling, 2000;Stougaard, 2000;Hirsch et al, 2001). During this process, the bacteria become enclosed within specialized infected cells within the core of the nodule.…”

Section: Introductionmentioning

confidence: 99%

Phosphorylation of Soybean Nodulin 26 on Serine 262 Enhances Water Permeability and Is Regulated Developmentally and by Osmotic Signals

et al. 2003

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Soybean nodulin 26 is expressed and targeted to the symbiosome membrane of nitrogen-fixing nodules, where it forms an aquaporin channel with a modest water transport rate. In this study, we show that the phosphorylation of nodulin 26 on Ser-262, which is catalyzed by a symbiosome membrane-associated calcium-dependent protein kinase, stimulates its intrinsic water transport rate. Furthermore, using a phosphospecific antibody, we have elucidated the developmental appearance and regulation of nodulin 26 phosphorylation in vivo. Although nodulin 26 protein is detected first in differentiating infected cells (16 days), phosphorylated nodulin 26 does not become pronounced until infected cell maturation (25 days). Phosphorylation is sustained at steady state levels until entry into senescence. Nodulin 26 phosphorylation is enhanced further by osmotic stresses (water deprivation and salinity). Thus, the phosphorylation of nodulin 26 coincides with the establishment of mature nitrogen-fixing symbiosomes, is regulated by osmotic stresses that induce calcium-signaling pathways, and appears to be part of the adaptive responses of infected cells to osmotic challenge.

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“…Cucumber belongs to the Cucurbitales order that is closely related to the Fabales, both being included in the nitrogen-fixing clade of the Rosid I group (Soltis et al, 1995). Some plants of this clade participate in nodule symbiosis with nitrogen-fixing bacteria such as Rhizobium and Frankia (Soltis et al, 1995;Doyle, 1998;Gualtieri and Bisseling, 2000). Based on phylogenetic analysis, it has been postulated that the gain and loss of nodulation capacity may have happened several times before obtaining a predisposition to nodulation in a common ancestor of this clade (Doyle, 1998).…”

Section: Discussionmentioning

confidence: 99%

GmPep914, an Eight-Amino Acid Peptide Isolated from Soybean Leaves, Activates Defense-Related Genes

et al. 2011

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Only a handful of endogenous peptide defense signals have been isolated from plants. Herein, we report a novel peptide from soybean (Glycine max) leaves that is capable of alkalinizing the media of soybean suspension cells, a response that is generally associated with defense peptides. The peptide, DHPRGGNY, was synthesized and found to be active at 0.25 nM and requiring only 5 to 10 min to obtain a maximal pH change. The peptide is located on the carboxy-terminal end of a 52-amino acid precursor protein (Glyma12g00990) deduced from the soybean genome project. A search of the soybean databank revealed a homolog (Glyma09g36370) that contained a similar peptide, DLPRGGNY, which was synthesized and shown to have identical activity. The peptides, designated GmPep914 (DHPRGGNY) and GmPep890 (DLPRGGNY), were capable of inducing the expression of both Glyma12g00990 (GmPROPEP914) and Glyma09g36370 (GmPROPEP890) in cultured soybean suspension cells within 1 h. Both peptides induced the expression of defense genes, including CYP93A1, a cytochrome P450 gene involved in phytoalexin synthesis, chitinaseb1-1, a chitinase involved in pathogen defense, and Glycine max chalcone synthase1 (Gmachs1), chalcone synthase, involved in phytoalexin production. Both GmPROPEP914 and GmPROPEP890 were highly expressed in the roots, relative to the aerial portions of the plant. However, treatment of the aerial portion of soybean plants with hormones involved in elicitation of defense responses revealed a significant increase in expression levels of GmPROPEP914 and GmPROPEP890. A search of gene databases revealed homologous sequences in other members of the Fabales and also in the closely related Cucurbitales but not in any other order of plants.

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The evolution of nodulation

Cited by 47 publications

References 67 publications

The Determinants of the Actinorhizal Symbiosis

The Determinants of the Actinorhizal Symbiosis

Phosphorylation of Soybean Nodulin 26 on Serine 262 Enhances Water Permeability and Is Regulated Developmentally and by Osmotic Signals

GmPep914, an Eight-Amino Acid Peptide Isolated from Soybean Leaves, Activates Defense-Related Genes

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