![]() In the photoperiodic inhibition of tuberization. The results are likely to revisit the roles of several signal molecules that are putatively implicated With an upregulation of the gene ENT-KAURENOIC ACID OXIDASE (KAO) that controls an early step in the gibberellin biosynthetic pathway provides an upstream molecular basis for tuberization Thus, its preferential PHYB-dependent upregulation under LDs compared to SDs concomitant Although GI is long assumed to be involved in the photoperiodic control of potato tuberization as an upstream gene of both CONSTANS and FLOWERING LOCUS T, its exact role could not be elucidated. A recent study reported PHYB-mediated photoperiodic regulation of GIGANTEA (GI), a flowering-control gene of Arabidopsis thaliana and rice, in the leaves of a potato plant. LD-inhibitory signal still continues to be elusive. Since it is mostly unknown how PHYB negatively regulates tuberization, the molecular identity of this PHYB-induced There is goodĮvidence that the photoreceptor phytochrome B (PHYB) inhibits tuberization under long days (LDs) by producing a graft-transmissible StBEL5) and gibberellin (GA) signaling pathways, with spatio-temporal activation of several transcription factors. ![]() ![]() Andigenum) under short days (SDs) is processed via miRNA (e.g. Photoperiodic induction of tuberization in potato (Solanum tuberosum L. ![]()
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