Systemic proteome remodeling in soybean during early nodulation: distinct responses in roots and leaves.

Authors

Afrodite Katsaouni, Emma Guillierme, Sander E Van der Verren, Kris Gevaert, Sofie Goormachtig, Sylwia Struk

Published in

Frontiers in plant science. Volume 17. Pages 1952260. Epub Sep 16, 2026.

Abstract

Here, we aimed to deepen our understanding of the integration between root and shoot signaling during early nodulation by jointly analyzing proteome-level dynamics in roots and leaves of the wild type (WT) and the hypernodulating autoregulation-of-nodulation (AON) mutant, nark. To this end, we performed a time-course shotgun proteomics experiment in soybean roots and leaves of the same plants inoculated with Bradyrhizobium diazoefficiens. In WT roots, we observed proteome changes linked to calcium-dependent signaling, cellular reorganization, and nutrient allocation. In the leaves, isoflavonoid biosynthesis and immunity-associated responses were differentially regulated in the WT and nark mutant during nodulation. We hypothesize that AON signaling involves a complex interplay between isoflavonoids and immunity, which might be associated with jasmonic acid and/or systemic auxin transport.

PMID:
42818788
Bibliographic data and abstract were imported from PubMed on 01 Oct 2026.

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