INSTITUTO DE FISIOLOGIA VEGETAL
Unidad Ejecutora - UE
capítulos de libros
Tolerance to biotic stress in wheat.
CASTRO AM, GIMÉNEZ DO, TOCHO E, VASICEK A.,TACALITI MS, BOTTINI R., SNAPE JW
Global Science Reviews. Am J of Plant Science
Global Science Reviews
Lugar: Tokio, Japón; Año: 2010;
Tolerance to stress is one of the main purposes in breeding wheat production, and genes or chromosomal regions with positive effects on tolerance to biotic and abiotic stresses should be identified. Interaction between defence signaling pathways mediated by several phythormones is an important mechanism for regulating defence responses against various types of pathogens and herbivories. The response of bread wheat, Triticum aestivum (2n=6x=42) to greenbug attack or to exogenous application of stress-induced hormones ethylene (E), jasmonic acid (JA), salicylic acid (SA) or ABA was analysed. In the recent years, several components regulating the cross-talk between SA, JA and ET pathways have been identified. Treatment of plants with these hormones results in enhanced resistance to biotic challenge. However, the underlying physiological mechanisms are not well understood. Some of the main wheat physiological pathways affected by the cross-talk between biotic stress and stress-induced hormones are described below.