Latest 2 Papers

Medicago truncatula CORYNE modulates inflorescence meristem branching, nutrient signaling, and arbuscular mycorrhizal symbiosis

Authors: Orosz, J., Lin, E. X., Torres Ascurra, Y. C., Kappes, M., Lindsay, P. L., Bashyal, S., Everett, H., Gautam, C. K., Jackson, D., Mueller, L. M.

Date: 2025-07-02 · Version: 3
DOI: 10.1101/2024.09.20.614181

Category: Plant Biology

Model Organism: Medicago truncatula

AI Summary

The study identifies the pseudokinase CRN in Medicago truncatula as a regulator of inflorescence meristem branching and a negative modulator of root interactions with arbuscular mycorrhizal (AM) fungi, operating partially independently of the AM autoregulation CLE peptide MtCLE53. Transcriptomic profiling of crn mutant roots reveals disruptions in nutrient, symbiosis, and stress signaling pathways, highlighting the multifaceted role of MtCRN in plant development and environmental interactions.

CLAVATA signaling CRN pseudokinase arbuscular mycorrhizal symbiosis Meristem branching transcriptomics

Differential induction of Medicago truncatula defence metabolites in response to rhizobial symbiosis and pea aphid infestation

Authors: Benjamin, G., Pacoud, M., Boutet, S., Clement, G., Brouquisse, R., Gatti, J.-L., POIRIE, M., Frendo, P.

Date: 2025-01-27 · Version: 2
DOI: 10.1101/2024.08.14.607928

Category: Plant Biology

Model Organism: Medicago truncatula

AI Summary

The study investigated whether nitrogen‑fixing rhizobial symbiosis in Medicago truncatula primes defense against the pea aphid Acyrthosiphon pisum. Metabolite profiling (LC‑MS, GC‑MS) and qPCR revealed that symbiotic plants uniquely accumulated triterpenoid saponins and up‑regulated flavonoid‑biosynthetic genes after aphid infestation, suggesting that NFS enhances pest‑specific defenses.

nitrogen-fixing symbiosis Medicago truncatula aphid resistance metabolomics flavonoid biosynthesis