Homologous Recombination Defective Arabidopsis Mutants Exhibit Enhanced Sensitivity to Abscisic Acid.
Abscisic acid (ABA) acts as an important plant hormone in regulating various aspects of plant growth and developmental processes particularly under abiotic stress conditions.An increased ABA level in plant cells inhibits DNA replication and cell division, causing plant growth retardation.In this study, we have investigated the effects of ABA on the