Year: 2013
Type: article
Abstract: Depending on the temperature involved, there are two types of cold stress: chilling stress exerted at low positive temperatures around +5°C and freezing stress when temperatures are below zero. As an adaptation to cold stress, plants have evolved multiple mechanisms for tolerance. These mechanisms can be mediated by a number of stress phytohormones and plant growth regulators, including ABA, JA, SA, ethylene. It is well known that stress phytohormones exert their action by triggering phosphoprotein cascade pathways, which in turn lead to expression of genes, involved in the acquisition of cold stress tolerance. The perennial plant Arabis alpina (Brassicaceae), closely related to Arabidopsis sp. was selected as a model plant in this study. A. alpina is wide spread in mountain areas of the northern hemisphere, some of its populations being tolerant to frost. Using HPLC-MS analysis, we represent experimental data on JA and JA-ile content in three A. alpina populations exposed to chilling or freezing stress: frost tolerant (T), non-tolerant (NT) and plants with a short hypocotyl (SH).
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2183847860