Interactions between hormone and redox signalling pathways in the control of growth and cross tolerance to stress

BARTOLI, C.; CASALONGUE, C.A; SIMONTACCHI, M.; MARQUEZ-GARCIA, B.; FOYER, C. H.

ENVIRONMENTAL AND EXPERIMENTAL BOTANY

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2013 vol. 94 p. 73 - 88

0098-8472

The ability of plants to respond to a wide range of environmental stresses is highly flexible and finely balanced through the interaction of hormonal plant growth regulators and the redox signalling hub, which integrates information from the environment and cellular metabolism/physiology. Plant hormones produce reactive oxygen species (ROS) as second messengers in signalling cascades that convey information concerning changes in hormone concentrations and/or sensitivity to mediate a whole range of adaptive responses. Cellular redox buffering capacity that is determined largely by the abundance of ascorbate has a profound influence on the threshold at which hormone signalling is triggered and on the interactions between different hormones. Other antioxidants such as glutat