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plant:rice [2026/04/13 10:57] – [References] rkoebnikplant:rice [2026/04/13 11:01] (current) – [Resistance gene: //Xa21//] rkoebnik
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 The immune receptor XA21 is cleaved by the rhomboid-like protease OsRBL3b, likely within its transmembrane domain, which protects grain set and male fertility in rice. This balance between reproduction and disease resistance through the specific expression of a rhomboid protease may be key to limiting the detrimental effects of an active immune response (Vergish et al., 2025). The immune receptor XA21 is cleaved by the rhomboid-like protease OsRBL3b, likely within its transmembrane domain, which protects grain set and male fertility in rice. This balance between reproduction and disease resistance through the specific expression of a rhomboid protease may be key to limiting the detrimental effects of an active immune response (Vergish et al., 2025).
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 +The small secreted peptide OsRALF26, previously identified as an //Oryza//-specific ligand for FERONIA-like receptor 1 (OsFLR1), is also directly perceived by XA21. OsRALF26 as a host-derived ligand of XA21 is required for full activation of XA21-mediated immunity in distal tissues, consistent with a role for OsRALF26 in spatial propagation of XA21-dependent defence (Kwon //et al.//, 2026).
  
 === Other resources === === Other resources ===
plant/rice.txt · Last modified: 2026/04/13 11:01 by rkoebnik