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