Aug 12, 2008 · In this study, we discover a new phyA-mediated phenotype designated far-red irradiation (FR) preconditioned cell death, which occurs only in the hypocotyls of FR-grown seedlings following...

Feb 26, 2014 · PHYA and PHYB trigger PIF degradation on red light perception, and blue light represses PIF4 and PIF5 transcription in a PHOT1- and PHOT2-dependent manner. These factors facilitate nuclear translocation of PHYB and, under prolonged light, promote COP1-mediated destabilization of this photoreceptor.

Nov 16, 2022 · Finally, the observed similarity between the lhy, phyB, and cat2 mutants indicated a shared signaling pathway mediated by ROS metabolism (Figure 7 c,d). It is known that the lhy mutation promotes sensitivity to oxidative stress and that PhyB regulates ROS production . The results reported here show that these two pathways are at least partially ...

In this review we discuss the molecular mechanisms mediating PhyA-dependent signaling. Among the phytochrome receptors phyA displays unique properties.

Nov 19, 2019 · Phytochromes are bilin-binding photosensory receptors which control development over a broad range of environmental conditions and throughout the whole plant life cycle.

Jan 1, 2022 · When air temperatures are under-optimum for plant growth and development, far-red light promotes the expression of PIF4 through PHYA, maintains the stability of PIF4 protein, and makes PIF4 directly bind to the CBF1 promoter region to promote its transcription.

Sep 17, 2024 · Unraveling the nuanced interplay between photosynthetic ROS and plant stress responses holds promise for uncovering new insights that could reinforce stress resistance and optimize net photosynthesis rates.

Dec 11, 2018 · Taking these data together, our study reveals the important role of the hinge region of Arabidopsis phyA in regulating phyA phosphorylation and function, thus linking specific residues in the hinge region to the regulatory mechanisms of phyA phosphorylation.

May 5, 2015 · PhyA is the primary photoreceptor mediating various plant responses to FR light compared with darkness . In natural conditions, phyA is crucial for seed germination and seedling de-etiolation under FR-rich light generated by filtration of light through or reflection of light from neighboring vegetation.

In Arabidopsis, phytochrome A (phyA) is the primary photoreceptor responsible for perceiving and mediating various responses to far-red light. Several breakthroughs in understanding the signaling network mediating phyA-activated responses have been made in recent years.