Article
A growth regulatory loop that provides homeostasis to phytochrome a signaling.
The Plant cell - 1 Dec 2003
Lariguet Patricia, Boccalandro Hernan E, Alonso Jose M, Ecker Joseph R, Chory Joanne, Casal Jorge J, Fankhauser Christian
Abstract excerpt
Phytochrome kinase substrate1 (PKS1) is a cytoplasmic protein that interacts physically with, and is phosphorylated by, the plant photoreceptor phytochrome. Here, we show that light transiently increases PKS1 mRNA levels and concentrates its expression to the elongation zone of the hypocotyl and root. This response is mediated by phytochrome A (phyA) acting in the very low fluence response (VLFR) mode. In the...
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