Arabidopsis kinesins KCH3 and KCH7 promote root gravitropism through actin bundling in the stele

Proceedings of the National Academy of Sciences, Volume 122, Issue 52, December 2025. <br/>SignificanceGravitropism is essential for root orientation and nutrient acquisition in plants. While gravity sensing via amyloplast sedimentation in columella cells is well studied, the role of the root stele in mediating the directional growth remains …