Required to regulate morphology and anatomy during seed maturation. ATP + H2O = ADP + H(+) + phosphate Expressed in seeds, specifically in the embryo. Accumulates gradually in the embryo during the seed development to reach high levels in mature seeds, but repressed rapidly in germinating seeds. Induced by abscisic acid (ABA) and abiotic stresses, such as drought, cold, and salt stresses, in an abscisic acid (ABA)- dependent manner. Belongs to the AAA ATPase family. BCS1 subfamily.