A5037811217- Legume Nitrogen Fixing Symbiosis
- Agronomic Practices and Intercropping Systems
- Plant nutrient uptake and metabolism
- Nematode management and characterization studies
- Cassava research and cyanide
- Plant Parasitism and Resistance
- Plant responses to water stress
- Transgenic Plants and Applications
- Plant Molecular Biology Research
- Photosynthetic Processes and Mechanisms
- Plant tissue culture and regeneration
- Plant and animal studies
Laboratoire des Symbioses Tropicales et Méditerranéennes
2020-2025
Université de Montpellier
2020-2025
Institut de Recherche pour le Développement
2020-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2025
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2020-2025
Institut Agro Montpellier
2020-2025
Centre Occitanie-Montpellier
2022-2025
L'Institut Agro
2025
The establishment of the rhizobium-legume symbiosis is generally based on plant perception Nod factors (NFs) synthesized by bacteria. However, some Bradyrhizobium strains can nodulate certain legume species, such as Aeschynomene spp. or Glycine max, independently NFs, and via two different processes that are distinguished necessity not a type III secretion system (T3SS). ErnA first known effector (T3E) triggering nodulation in indica. In this study, collection 196 sequenced was tested A....
Abstract The Bradyrhizobium vignae strain ORS3257 is an elite recommended for cowpea inoculation in Senegal. This was recently shown to establish symbioses on some Aeschynomene species using a cocktail of Type III effectors (T3Es) secreted by the T3SS machinery. In this study, collection mutants different T3Es genes, we sought identify that modulate symbiotic properties three Vigna ( V. unguiculata , radiata and mungo ). While had positive impact efficiency it blocked symbiosis with ....
Bradyrhizobium are abundant soil bacteria and the major symbiont of legumes. The recent availability genome sequences provides a large source information for analysis symbiotic traits. In this study, we investigated evolutionary dynamics nodulation genes (nod) their relationship with encoding type III secretion systems (T3SS) effectors among bradyrhizobia. Based on comparative 146 sequences, identified six different types T3SS gene clusters. two predominant cluster designated RhcIa RhcIb...
Many Bradyrhizobium strains are able to establish a Nod factor-independent symbiosis with the leguminous plant Aeschynomene indica by use of type III secretion system (T3SS). Recently, an important advance in understanding molecular factors supporting this has been achieved silico identification and functional characterization 27 putative T3SS effectors (T3Es) vignae ORS3257. In present study, we experimentally extend catalog T3Es using multi-omics approach. Transcriptome analysis under...
Some Bradyrhizobium strains nodulate certain Aeschynomene species independently of Nod factors, but thanks to their type III secretion system (T3SS). While different T3 effectors triggering nodulation (ErnA and Sup3) have been identified, the plant signalling pathways they activate remain unknown. Here, we explored intraspecies variability in T3SS-triggered within evenia investigated transcriptomic responses that occur during this symbiosis. Furthermore, having effector sets were tested on...
The authors declare no conflicts of interest. Video documenting the Pharaoh's snakes Teasel (Lehours et al., 2023) is available in Figshare at https://doi.org/10.6084/m9.figshare.21842163.v1. Values nifH gene numbers and acetylene reduction assays (Lehours, are https://doi.org/10.6084/m9.figshare.21856494.v1. Appendix S1. Please note: publisher not responsible for content or functionality any supporting information supplied by authors. Any queries (other than missing content) should be...
Premise We report a protocol for studying the function of apple ( Malus × domestica ) transcription factors based on glucocorticoid receptor (GR) system, which allows dexamethasone (DEX)‐mediated activation plant to monitor expression levels their potential target genes. Methods and Results Apple leaves are transformed with vector that studied factor (i.e., FLOWERING LOCUS C [MdFLC]) fused GR. Calli derived from treated DEX cycloheximide, protein synthesis inhibitor. Compared other methods,...
Effector proteins secreted via the type III secretion system (T3SS) of nitrogen-fixing rhizobia are key determinants symbiotic compatibility in legumes. Previous report revealed that T3SS Bradyrhizobium sp. DOA9 plays negative effects on Arachis hypogaea symbiosis. In this study, we characterized role 4 effector (p0490, p0871, SkP48, and p0903) containing small ubiquitin-like modifier (SUMO) protease domain identified during While strain two mutants SUMO-proteases, p0490 induced inefficient...
An amendment to this paper has been published and can be accessed via a link at the top of paper.
Abstract Bradyrhizobium is a main rhizobial lineage of which most members nodulate legume plants using Nod factors (NFs) synthetized by the nod genes. However, Photosynthetic supergroup (phylogroup) within (PB) are -free but still capable establishing nitrogen-fixing nodules with some tropical legumes Aeschynomene genus. These unusual findings based on genomic sequences only 13 PB strains, and almost all were isolated from nodules. Here, we investigate diversity in grassland, forest, rice...