An Affinity Probe for Isolation of Abscisic Acid-Binding Proteins

摘要

The sesquiterpene plant hormone abscisic acid S-(+)-ABA 1(Figure 1)regulates many agronomically important processes in plant growth and development.For example,in developing seeds ABA mediates accumulation of storage proteins and lipids,tolerance of desiccation,inhibition of precocious germination,and maintenance of dormancy.Stomatal aperture and plant responses to diverse environmental stresses such as drought,salinity,and extremes of temperature are regulated by ABA.Screens for ABA-sensitive mutants have identified genes coding for transcription factors involved in ABA signal transduction processes and have been successfully employed for improving stress tolerance of plants.