ArticlePlant physiology2024
Temporal and spatial frameworks supporting plant responses to vegetation proximity.
Article in Plant physiology, 2024. 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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Who cites it
4 citing papers in PubMed.
- DNA-binding activity of PIF7 links phytochrome B signaling to plant responses to vegetation proximity.Plant physiology · 2026Article
- A shade-hyposensitive tomato line shows altered auxin homeostasis and higher fruit yield under high-density field conditions.The New phytologist · 2025Article
- Species-specific PHYTOCHROME-INTERACTING FACTOR utilization in the plant morphogenetic response to environmental stimuli.The Plant cell · 2025Article
- Plant proximity reduces seed yield in Arabidopsis plants by decreasing the number of ovule primordia.Physiologia plantarumArticle
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Authors and funding
12 authors.
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Abstract
After the perception of vegetation proximity by phytochrome photoreceptors, shade-avoider plants initiate a set of responses known as the shade avoidance syndrome (SAS). Shade perception by the phytochrome B (phyB) photoreceptor unleashes the PHYTOCHROME INTERACTING FACTORs and initiates SAS responses. In Arabidopsis (Arabidopsis thaliana) seedlings, shade perception involves rapid and massive changes in gene expression, increases auxin production, and promotes hypocotyl elongation. Other components, such as phyA and ELONGATED HYPOCOTYL 5, also participate in the shade regulation of the hypocotyl elongation response by repressing it. However, why and how so many regulators with either positive or negative activities modulate the same response remains unclear. Our physiological, genetic, cellular, and transcriptomic analyses showed that (i) these components are organized into 2 main branches or modules and (ii) the connection between them is dynamic and changes with the time of shade exposure. We propose a model for the regulation of shade-induced hypocotyl elongation in which the temporal and spatial functional importance of the various SAS regulators analyzed here helps to explain the coexistence of differentiated regulatory branches with overlapping activities.
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Registered trials
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