Plant Cold Acclimation: The Role of Abscisic Acid

Autor:	R. Trischuk, Lawrence V. Gusta, C. J. Weiser
Rok vydání:	2005
Předmět:	photoperiodism fungi food and beverages Plant physiology Plant Science Biology Acclimatization chemistry.chemical_compound Downregulation and upregulation chemistry Botany Cold acclimation Agronomy and Crop Science Tree species Abscisic acid Freezing tolerance
Zdroj:	Journal of Plant Growth Regulation. 24:308-318
ISSN:	1435-8107 0721-7595
DOI:	10.1007/s00344-005-0079-x
Popis:	The freezing tolerance or cold acclimation of plants is enhanced over a period of time by temperatures below 10°C and by a short photoperiod in certain species of trees and grasses. During this process, freezing tolerance increases 2–8°C in spring annuals, 10–30°C in winter annuals, and 20–200°C in tree species. Gene upregulation and downregulation have been demonstrated to be involved in response to environmental cues such as low temperature. Evidence suggests ABA can substitute for the low temperature stimulus, provided there is also an adequate supply of sugars. Evidence also suggests there may be ABA-dependent and ABA-independent pathways involved in the acclimation process. This review summarizes the role of ABA in cold acclimation from both a historical and recent perspective. It is concluded that it is highly unlikely that ABA regulates all the genes associated with cold acclimation; however, it definitely regulates many of the genes associated with an increase in freezing tolerance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f041e6ae9274b4324070a54d8c3e0432 https://doi.org/10.1007/s00344-005-0079-x Zobrazit plný text záznamu Full text from SpringerLink