What are phytohormones & their signaling pathways?
Roles of Phytohormones and Their Signaling Pathways in Leaf Development and Stress Responses Phytohormones participate in various processes over the course of a plant's lifecycle.
What is the role of phytohormones in plants?
The role of phytohormone, cytokinins, has been poorly understood in plants although there are certain reports which show its role in defense response against some pathogens. Apart from that, its role has been shown in the growth of root, shoot and inflorescence, seed development, senescence in leaves, and stress response (Muller and Sheen 2007 ).
How do phytohormones mediate plant defense response to biotic challenges?
SA, JA, and ET work together in a harmonious manner with BR, auxin, cytokinin, and GA in mediating plant response to biotic challenges. Plant defense response doesn’t depend solely on any one hormone rather all the phytohormones work with each other regulating defense response positively or negatively (Fig. 7.8 ).
What is the relationship between genes and phytohormones?
All the processes and responses in plants are the result of interplay of many genes and gene families suitably orchestrated in a network. In plants, growth, development, and response to various environmental cues go hand in hand. Various phytohormones are known to play important role in almost all the process through the modulation of genes.
Rôles des phytohormones dans les symbioses racinaires/note de