抄録
Plants are continuously exposed to environmental changes in temperature, water and nutrient availability, oxygen and CO2 levels, and light intensity, in order to make adaptive responses to the changes. Sometimes, herbivory and infection stresses may affect the adaptive mechanism, so that the resultant cellular redox change follows increases in levels of reactive oxygen species (ROS) and redox-buffering compounds. Such a redox unbalance will modify the redox status of the certain cellular components to modulate the function of the components. On the other hand, plants always generate ROS for the use of their growth. Thus, plant growth is strongly affected by biotic and abiotic stresses. Considering ROS signaling for adaptive responses and development, we must take into consideration the role of the tripeptide compound glutathione. Glutathione participates in cellular redox homeostasis, but it seem to have two different roles in ROS signaling. Here I will discuss what is common and different in ROS-dependent regulations for adaptive responses and development in view of glutathione's role.
