Abstract
Host range specificity is a prominent feature of the legume-rhizobial symbiosis. Sinorhizobium meliloti and Sinorhizobium medicae are two closely related species that engage in root nodule symbiosis with legume plants of the Medicago genus, but certain Medicago species exhibit selectivity in their interactions with the two rhizobial species. We have identified a Medicago receptor–like kinase, which can discriminate between the two bacterial species, acting as a genetic barrier against infection by most S. medicae strains. Activation of this receptor-mediated nodulation restriction requires a bacterial gene that encodes a glycine-rich octapeptide repeat protein with distinct variants capable of distinguishing S. medicae from S. meliloti . This study sheds light on the coevolution of host plants and rhizobia, shaping symbiotic selectivity in their respective ecological niches.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
A Medicago receptor-like kinase restricts infection by most S. medicae strains and discriminates between the two rhizobial species.
- Interactor
- S. medicae
Sinorhizobium medicaee0symbiont - Gene
- receptor–like kinasee0
- Outcome
- infection by most S. medicae strainse0
- Qualifier
- can discriminate between the two bacterial speciese0
MedicagoOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have identified a Medicago receptor–like kinase, which can discriminate between the two bacterial species, acting as a genetic barrier against infection by most S. medicae strains”
Claim · model-written summary
Activation of receptor-mediated nodulation restriction requires a bacterial glycine-rich octapeptide repeat protein gene.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have identified a Medicago receptor–like kinase, which can discriminate between the two bacterial species, acting as a genetic barrier against infection by most S. medicae strains”
e1“Activation of this receptor-mediated nodulation restriction requires a bacterial gene that encodes a glycine-rich octapeptide repeat protein with distinct variants capable of distinguishing S. medicae from S. meliloti”
Claim · model-written summary
Distinct variants of the bacterial glycine-rich octapeptide repeat protein distinguish S. medicae from S. meliloti.
- Interactor
- S. medicaeSinorhizobium medicaee1symbiont
- Gene
- glycine-rich octapeptide repeat proteine1
- Outcome
- distinguishing S. medicae from S. melilotie1
- Qualifier
- distinct variantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have identified a Medicago receptor–like kinase, which can discriminate between the two bacterial species, acting as a genetic barrier against infection by most S. medicae strains”
e1“Activation of this receptor-mediated nodulation restriction requires a bacterial gene that encodes a glycine-rich octapeptide repeat protein with distinct variants capable of distinguishing S. medicae from S. meliloti”