查看文章

Plants are constantly exposed to various abiotic and biotic stresses in nature. Abiotic stresses such as salinity, drought and extreme temperatures (heat, cold and freezing) are critical factors that reduce crop yields for most major crops worldwide. A widespread phenomena attributed to responses to both abiotic and biotic stresses is the unrestrained accumulation of reactive oxygen species (ROS) in plant cells, which can lead to irreparable metabolic dysfunction and death. To survive under stress conditions, plants have evolved intricate mechanisms to perceive external signals, allowing optimal responses to environmental conditions. Metabolic acclimation via the accumulation of proline is often regarded as a basic strategy for the protection and survival of plants under abiotic stress. Recent proteomic, genomic and metabolomic studies have revealed that proline, produced under stressful conditions, can act as a …