Molecular chaperone that may function in heat stress response. May interact with a ClpP-like protease involved in degradation of denatured proteins in the chloroplast (PubMed:20141629). Chaperone involved in response to abiotic stresses. Plays a positive role during dehydration and salt stress (PubMed:27457985). Expressed in stems, culms and leaves. Induced by low temperature (PubMed:20141629). Induced by drought stress, salt stress and abscisic acid (PubMed:16924117). Plants overexpressing CLPD1 exhibit improved tolerance to drought and salt stresses. Belongs to the ClpA/ClpB family. ClpD subfamily.