title: Phytochrome in Cultured Wild Carrot Tissue: II. Dark Transformations.
abstract: Disappearance and transformation of phytochrome in light-treated, dark-grown cultured tissue of wild carrot (Daucus carota L.) have been analyzed. Evidence is presented for the existence of two populations of far red-absorbing phytochromes: one which is subject to reversion, and a second which undergoes loss of photoreversibility. Phytochrome levels and transformation characteristics have been compared for several strains and developmental stages of cultured wild carrot tissue.
authors.affiliation: Biological Sciences Group, University of Connecticut, Storrs, Connecticut 06268.
authors.forename: D F
authors.initials: DF
authors.lastname: Wetherell
authors.forename: W L
authors.initials: WL
authors.lastname: Koukkari