Probable component of a transcriptional corepressor complex involved in salt tolerance through modulation of reactive oxygen species levels, abscisic acid-dependent stomatal closure, photosynthesis and K(+) /Na(+) homeostasis (PubMed:26603028). Has an in vitro ATPase activity (PubMed:26603028). kcat is 0.17 min(-1) for ATP. Interacts probably with TPL/TPR in an EAR-motif dependent manner. Detected in seedlings and roots (PubMed:23893171). Expressed specifically in vascular tissues (PubMed:24675528). Expressed in flowers, stems, siliques, leaves and roots, with the highest expression in open flowers and the lowest in leaves (PubMed:26603028). Up-regulated by salt and abscisic acid treatment. Reduced drought tolerance and hypersensitivity to salt stress, resulting in poor growth in normal soil. Belongs to the ClpA/ClpB family.