ArticlePlant signaling & behavior2018
Involvement of PP6-type protein phosphatase in hypocotyl phototropism in Arabidopsis seedlings.
Article in Plant signaling & behavior, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 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
2 citing papers in PubMed, 2 citations in OpenAlex.
- Reversible phosphorylation of NPH3/RPT2-like proteins regulates phototropin receptor signaling.The Plant cell · 2026Article
- Protein phosphatase PP2C19 controls hypocotyl phototropism through the phosphorylation modification of NONPHOTOTROPIC HYPOCOTYL3 in Arabidopsis.Plant & cell physiology · 2025Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Recently, we reported that the D6 protein kinase subfamily, which belongs to the AGCVIII kinase family, is a critical component of hypocotyl phototropism in Arabidopsis seedlings. Furthermore, we demonstrated that AGC1-12, which is also a member of the AGCVIII kinase family, is involved in both the pulse-induced first positive phototropism and gravitropism in Arabidopsis hypocotyls. Those results indicated that phosphorylation control is an important mechanism in phototropic signaling. As phosphorylation regulation is controlled by both kinases and phosphatases, we investigated the roles of phosphatases in hypocotyl phototropism. Our physiological analysis, which was performed using Arabidopsis mutants, indicated that the flower-specific, phytochrome-associated protein phosphatase family, which functions as a catalytic subunit of protein phosphatase 6 (PP6), is involved in both the pulse-induced first positive phototropism and the time-dependent second positive phototropism, although it is not necessary for the continuous-light-induced second positive phototropism. These results suggest that not only kinases, but also phosphatases play critical roles in hypocotyl phototropism to control phosphorylation status and that PP6-type protein phosphatases may act antagonistically with AGCVIII protein kinases on the same targets, such as PIN-formed proteins.
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