ReviewBiophysical reviews2022
Phytochrome A in plants comprises two structurally and functionally distinct populations - water-soluble phyA' and amphiphilic phyA″.
Review in Biophysical reviews, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 6 citations in OpenAlex.
- Cryptochrome 1 in the dark affects phytochrome A in etiolated Arabidopsis seedlings shifting the balance between its native types, phyA' and phyA″.Protoplasma · 2025Article
- Phytochrome phosphorylation in plant light signaling.Frontiers in plant science · 2024Review
- Two Distinct Molecular Types of Phytochrome A in Plants: Evidence of Existence and Implications for Functioning.International journal of molecular sciences · 2023Review
- Editorial for the special issue of biophysical reviews on the 9th Congress of the Russian society for photobiology held in Shepsi, Krasnodar region, Russia, on September 12-19, 2021.Biophysical reviews · 2022Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Photoreceptor phytochrome A (phyA) plays a key role both in the individual development and in the evolution of higher plants. It acts in three distinct modes - far-red light-induced very low fluence responses (VLFRs), high irradiance responses (HIRs), and red/far-red-reversible low fluence responses (LFRs). Signal transduction from phyA includes its transportation from the cytoplasm into the nucleus and activation of light-responsive genes there. It is also active in the cytoplasm. Two types of phyA speckles were detected upon its light-induced nucleocytoplasmic partitioning and a fraction remained in the cytoplasm. In this review, we present a concept that this complex picture of the phyA action is due, at least partially, to the existence of two phyA types in the cell differing by the structure of the N-terminus, probably, by its serine phosphorylation. These are phosphorylated water-soluble phyA' and underphosphorylated ambiquitous phyA″ represented by two fractions - water-soluble and membrane-associated. From the analysis of the phyA pools' activity in the regulation of phyA synthesis, seed germination, seedling establishment, and (proto)chlorophyll biosynthesis it is concluded that phyA″ is responsible for the regulation of seed germination, whereas in seedlings phyA' mediates the VLFRs, and the water-soluble phyA″ fraction, the HIRs. The membrane-associated phyA″ is likely to be active in cytoplasmic photoregulatory events. Functional interaction between phyA and the defense-related hormone jasmonic acid is also considered.
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