PT  - JOURNAL ARTICLE
AU  - Javier Martínez Pacheco
AU  - Limei Song
AU  - Lenka Kuběnová
AU  - Miroslav Ovečka
AU  - Victoria Berdion Gabarain
AU  - Juan Manuel Peralta
AU  - Tomás Urzúa Lehuedé
AU  - Miguel Angel Ibeas
AU  - Sirui Zhu
AU  - Yanan Shen
AU  - Mikhail Schepetilnikov
AU  - Lyubov A Ryabova
AU  - José M. Alvarez
AU  - Rodrigo A. Gutierrez
AU  - Guido Grossman
AU  - Jozef Šamaj
AU  - Feng Yu
AU  - José M. Estevez
TI  - Cell surface receptor kinase FERONIA linked to nutrient sensor TORC1 signaling controls root hair growth at low temperature in <em>Arabidopsis thaliana</em>
AID  - 10.1101/2022.01.10.475584
DP  - 2022 Jan 01
TA  - bioRxiv
PG  - 2022.01.10.475584
4099  - http://biorxiv.org/content/early/2022/06/30/2022.01.10.475584.short
4100  - http://biorxiv.org/content/early/2022/06/30/2022.01.10.475584.full
AB  - Root hairs (RH) are excellent model systems for studying cell size and polarity since they elongate several hundred-fold their original size. Their tip growth is determined both by intrinsic and environmental signals. Although nutrient availability and temperature are key factors for a sustained plant growth, the molecular mechanisms underlying their sensing and downstream signaling pathways remain unclear. Here, we identified that low temperature (10°C) triggers a strong RH elongation response involving the cell surface receptor kinase FERONIA (FER) and the nutrient sensing TOR Complex 1 (TORC1). In this study, we found that FER is required to perceive limited nutrient availability caused by low temperature. FER interacts with and activates TORC1-downstream components to trigger RH growth. In addition, the small GTPase Rho-related protein from plants 2 (ROP2) is also involved in this RH growth response linking FER and TORC1. We also found that limited nitrogen nutrient availability can mimic the RH growth response at 10°C in a NRT1.1-dependent manner. These results uncover a molecular mechanism by which a central hub composed by FER-ROP2-TORC1 is involved in the control of RH elongation under low temperature and nitrogen deficiency.Competing Interest StatementThe authors have declared no competing interest.