May be involved in response to stresses. Highly expressed in leaf sheaths. leaf collars and flag leaves. Expressed in roots, stems, glumes, young panicles and pistils. Induced by cold, salt and drought stresses. Induced by abscisic acid, auxine, brassinosteroid, ethylene, gibberellin, jasmonate, kinetin, reactive oxygen species and salicylate. Belongs to the Cyclase 1 superfamily. Truncated N-terminus. Truncated N-terminus.