RT Journal Article
T1 Improved germination under osmotic stress of tobacco plantsoverexpressing a cell wall peroxidase
A1 Amaya, Iraida
A1 Botella-Mesa, Miguel Ángel
A1 de la Calle, Mercedes
A1 Medina, María
A1 Heredia-Bayona, Antonio
A1 Bress, Ray
A1 Hasegawa, Paul
A1 Quesada-Felice, Miguel Ángel
A1 Valpuesta-Fernández, Victoriano
K1 Osmosis
K1 Plantas
AB The cell wall is a fundamental component in theresponse of plants to environmental changes. To directly assessthe role of the cell wall we have increased the expression andactivity of a cell wall associated peroxidase (TPX2), an enzymeinvolved in modifying cell wall architecture. Overexpression ofTPX2 had no effect on wild-type development, but greatlyincreased the germination rate under high salt or osmotic stress.Differential scanning calorimetry showed that transgenic seedswere able to retain more water available for germination thanwild-type seeds. Thermoporometry calculations indicated thatthis could be due to a lower mean pore size in the walls oftransgenic seeds. Therefore, the higher capacity of transgenicseeds in retaining water could result in higher germination ratesin conditions where the availability of water is restricted.
PB FEBS Letter
YR 1999
FD 1999-05-01
LK https://hdl.handle.net/10630/37071
UL https://hdl.handle.net/10630/37071
LA eng
NO Amaya, I., Botella, M. A., de la Calle, M., Medina, M. I., Heredia, A., Bressan, R. A., Hasegawa, P. M., Quesada, M. A., & Valpuesta, V. (1999). Improved germination under osmotic stress of tobacco plants overexpressing a cell wall peroxidase. FEBS Letters, 457(1), 80–84. https://doi.org/10.1016/S0014-5793(99)01011-X
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026