RT Journal Article
T1 The Arabidopsis TETRATRICOPEPTIDE THIOREDOXIN-LIKE 1 Gene Is Involved in Anisotropic Root Growth during Osmotic Stress Ad.aptation
A1 Cuadrado-Pedetti, María Belén
A1 Rauschert, Inés
A1 Sainz, María Martha
A1 Amorim-Silva, Vitor
A1 Botella-Mesa, Miguel Ángel
A1 Borsani, Omar
A1 Sotelo-Silveira, Mariana
K1 Arabidopsis - Genética
K1 Raíces (Botánica) - Crecimiento
K1 Plantas - Efectos del estrés
AB Mutations in the Arabidopsis TETRATRICOPEPTIDE THIOREDOXIN-LIKE 1 (TTL1) gene cause reduced tolerance to osmotic stress evidenced by an arrest in root growth and root swelling, which makes it an interesting model to explore how root growth is controlled under stress conditions. We found that osmotic stress reduced the growth rate of the primary root by inhibiting the cell elongation in the elongation zone followed by a reduction in the number of cortical cells in the proximal meristem. We then studied the stiffness of epidermal cell walls in the root elongation zone of ttl1 mutants under osmotic stress using atomic force microscopy. In plants grown in control conditions, the mean apparent elastic modulus was 448% higher for live Col-0 cell walls than for ttl1 (88.1 ± 2.8 vs. 16.08 ± 6.9 kPa). Seven days of osmotic stress caused an increase in the stiffness in the cell wall of the cells from the elongation zone of 87% and 84% for Col-0 and ttl1, respectively. These findings suggest that TTL1 may play a role controlling cell expansion orientation during root growth, necessary for osmotic stress adaptation.
PB MDPI
YR 2021
FD 2021-02-07
LK https://hdl.handle.net/10630/34673
UL https://hdl.handle.net/10630/34673
LA eng
NO Cuadrado-Pedetti MB, Rauschert I, Sainz MM, Amorim-Silva V, Botella MA, Borsani O, Sotelo-Silveira M. The Arabidopsis TETRATRICOPEPTIDE THIOREDOXIN-LIKE 1 Gene Is Involved in Anisotropic Root Growth during Osmotic Stress Adaptation. Genes. 2021; 12(2):236. https://doi.org/10.3390/genes12020236
NO This research was funded by CSIC I+D 2018, grant No. 95 to M.S.-S.; CSIC Grupos (O.B.) and PEDECIBA. This work was supported by the Ministerio de Economía y Competitividad, co-financed by the European Regional Development Fund (grant BIO2017-82609-R to M.A.B). We received fellowship of ANII and CAP, UdelaR.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 23 ene 2026