Micro‐Regulators of Hormones and Stress Sharma, Neha; Mittal, Deepti; Mishra, Neeti‐Sanan
Mechanism of Plant Hormone Signaling under Stress,
04/2017
Book Chapter
Abiotic stress in crops has emerged as a serious problem as it leads to a loss of crop productivity and quality. Increasing population and global climatic changes demand an urgent need for ...substantive research to improve crop yields. Phytohormones are biochemical messengers, which are activated in response to any change in external or internal environment of a plant and also function in plant growth and development. They are known to regulate gene expression to maintain homeostasis, through effective gene signaling cascades. Recently, another player in gene regulation, microRNAs (miRs), have been identified that too play a significant role in influencing gene expression. miRs function via sequence specific mechanisms to affect various stages of growth, stress responses, and phytohormone signaling cascades in plants. In view of present information, we present here an update on the role miRs in hormonal regulation and abiotic stress mechanisms in plants. Such micro‐regulatory interactions connecting phytohormone signaling with abiotic stress will be an important step towards consolidated efforts for better crop improvement programs.
