Photoperiodic flowering occurs under internal and external coincidence

Regulation of photoperiodic flowering by Arabidopsis photoreceptors.

Photoperiodism is a day-length-dependent seasonal change of physiological or developmental activities that is widely found in plants and animals. Photoperiodic flowering in plants is regulated by photosensory receptors including the red/far-red light-receptor phytochromes and the blue/UV-A light-receptor cryptochromes. However, the molecular mechanisms underlying the specific roles of individua...

Flowering time and seed dormancy control use external coincidence to generate life history strategy

Climate change is accelerating plant developmental transitions coordinated with the seasons in temperate environments. To understand the importance of these timing advances for a stable life history strategy, we constructed a full life cycle model of Arabidopsis thaliana. Modelling and field data reveal that a cryptic function of flowering time control is to limit seed set of winter annuals to ...

Photoperiodic and thermosensory pathways interact through CONSTANS to promote flowering at high temperature under short days.

Plants detect changes in day length to induce seasonal patterns of flowering. The photoperiodic pathway accelerates the flowering of Arabidopsis thaliana under long days (LDs) whereas it is inactive under short days (SDs), resulting in delayed flowering. This delay is overcome by exposure of plants to high temperature (27°C) under SDs (27°C-SD). Previously, the high-temperature flowering respon...

Internal Forces in Piles “Under External Forces and Earthquake in Homogeneous and Nonhomogeneous Media”

Proserpinaca: photoperiodic and chemical differentiation of leaf development and flowering.

Proserpinaca palustris L. produced juvenile leaves on 8-hour photoperiods, adult leaves on 12-hour photoperiods, and adult leaves and flowers on 14-hour photoperiods. Treatment of plants growing on 8- and 14-hour photoperiods with gibberellic acid caused stem elongation and inhibited flowering. The treated plants on 8-hour photoperiods produced adult-like leaves.