The paper identifies a peptide signal from the embryo that directs endosperm polarity in Arabidopsis through a molecular dialogue involving HAIKU2 and WRKY10/MINISEED3.

Science · Sep 3, 2026Peer-reviewedPlant Biology

Long-term high temperatures affect seed maturation and seed coat integrity in Brassica napus

Unnikannan Prabhullachandran, Ivana Urbánková, Alejandro Medaglia-Mata, Audrey Creff, Aline Voxeur, Vilma Buršı́ková, Benoît Landrein, Jan Hejátko, Hélène S. Robert

This study shows that long-term high temperatures accelerate embryo growth in Brassica napus, leading to seed coat rupture due to mechanical stress and biochemical changes in the seed coat.

Plant Stress · Sep 1, 2026Peer-reviewedPlant Biology

APETALA2 controls seed growth by regulating outer integument mechanical identity during seed coat differentiation

Camille Bied, Runjue Yao, Audrey Creff, Luka Lelas, Debra David, Amélie Bauer, Sophy Boeuf, Guillaume Cerutti, Jeanne Braat, Alexandra Launay‐Avon, Christine Paysant Le Roux, Frances Kerin Clark, Adrienne Roeder, Aline Voxeur, Gwyneth Christina Ingram, , Benoît Landrein

This study shows APETALA2 regulates seed growth by controlling mechanical properties of the outer integument layers through cell wall remodeling without affecting mechanosensitive responses.

bioRxiv · Dec 17, 2025 · PreprintPlant Biology

Plasticity and invariance of Arabidopsis inflorescence and floral shoot apical meristems in response to mineral nutrients

Benoît Landrein, Katie Abley, Pau Formosa-Jordan, Elliot M. Meyerowitz, Henrik Jönsson, James C W Locke

The paper investigates how nutrient availability affects the plasticity and invariance of inflorescence and floral meristems in Arabidopsis, showing differences in their response to nutrient changes.

bioRxiv · Jan 31, 2025 · PreprintPlant Biology