Cited by 866Light effects on plantsPlant Parasitism and ResistancePlant Molecular Biology Research

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Photoreceptor Signaling Networks in Plant Responses to Shade

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Casal, Jorge J.·2013·Annual Review of Plant Biology

DOI 10.1146/annurev-arplant-050312-120221

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Abstract

The dynamic light environment of vegetation canopies is perceived by phytochromes, cryptochromes, phototropins, and UV RESISTANCE LOCUS 8 (UVR8). These receptors control avoidance responses to preclude exposure to limiting or excessive light and acclimation responses to cope with conditions that cannot be avoided. The low red/far-red ratios of shade light reduce phytochrome B activity, which allows PHYTOCHROME INTERACTING FACTORS (PIFs) to directly activate the transcription of auxin-synthesis genes, leading to shade-avoidance responses. Direct PIF interaction with DELLA proteins links gibberellin and brassinosteroid signaling to shade avoidance. Shade avoidance also requires CONSTITUTIVE PHOTOMORPHOGENESIS 1 (COP1), a target of cryptochromes, phytochromes, and UVR8. Multiple regulatory loops and the input of the circadian clock create a complex network able to respond even to subtle threats of competition with neighbors while still compensating for major environmental fluctuations such as the day-night cycles.

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Background
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Background
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BackgroundSelf-citation
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Influential
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Background
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Background
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“Higher plants use sensory photoreceptors to accurately perceive light from UV-B to far-red wavelengths and chlorophyll and carotenoids of the photocomplex in photosynthesis (Casal, 2013).”
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“Plants have developed elaborate systems to integrate environment cues provided by light intensity, temperature and water potential to adjust their growth pattern (Kristie and Jolliffe 1987, Casal 2013, Toledo-Ortiz et al. 2014).”
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Genome-Wide Identification and Expression Analyses of the FAR1/FHY3 Gene Family Provide Insight into Inflorescence Development in Maize
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“Noticeable differential expression of circadian clock genes has not been reported in transcriptome studies of SAS in Arabidopsis seedlings and in the stem of tomato and other species (Cagnola, Ploschuk, Benech-Arnold, Finlayson, & Casal, 2012; Devlin et al., 2003).”
BackgroundInfluential
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“Light plays a crucial role in photosynthesis, plant growth, and overall health its availability can lead to strong competition among plant species (De Wit et al. 2012; Casal 2013; Simkin et al. 2022).”
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“Plants utilize a range of photoreceptors to sense light, among which cryptochromes and phytochromes are notable (Mo¨glich et al. 2010; Casal 2013).”
Background
A low-cost open-source imaging platform reveals spatiotemporal insight into leaf elongation and movement
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“This is particularly challenging in dense vegetation, both in natural and agricultural fields, where plants compete for access to this resource because they mutually shade each other (Casal 2013; Huber et al. 2021).”
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Protein design accelerates the development and application of optogenetic tools
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“Plants have evolved the ability to sense and respond to changes in the quality of light using a family of photoreceptors, particularly cryptochromes and phytochromes, which act as molecular switches in response to blue-violet light and R:FR ratio, respectively (Casal 2013).”
Background
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“The red/far-red ratio (R:FR), for example, decreases with increasing canopy shade in forests and dense canopies (De Castro 2000; Kurepin et al. 2006; Casal 2013; Park and Runkle 2017), because R radiation is absorbed much more than FR (Woolley 1971; Kasperbauer 1987; Ruberti et al. 2012).”
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Layering contrasting photoselective filters improves the simulation of foliar shade
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Authors: Casal, J. J.
Affiliations: Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
Corresponding author: Casal, Jorge J.
ORCID: Casal, Jorge J.
Venue: Annual Review of Plant Biology
Publisher: Annual Reviews
Published: 2013-04-29
Volume: 64
Issue: 1
Pages: 403-427
ISSN: 1543-5008 (ISSN-L)
1545-2123
DOI: 10.1146/annurev-arplant-050312-120221
OpenAlex: W2107201571
Cited by: 865
References: 144
Citations by year: 2026: 81 · 2025: 66 · 2024: 72 · 2023: 61 · 2022: 79 · 2021: 91 · 2020: 67 · 2019: 60 · 2018: 62 · 2017: 60 · 2016: 58 · 2015: 44 · 2014: 51 · 2013: 13
FWCI: 5.94
Type: journal article
Language: en
Open access: green
hdl.handle.net
Licence: cc-by-nc-nd
Locations: Annual Review of Plant Biology (publishedVersion)
PubMed (publishedVersion)
CONICET Digital (CONICET) (submittedVersion, cc-by-nc-nd)
Funders: Consejo Nacional de Investigaciones Científicas y Técnicas
Universidad de Buenos Aires (CONICET)
Topics: Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
Keywords: shade avoidance, photoreceptors, phytochrome, cryptochrome, phototropin, UVR8, phytochrome-interacting factors, DELLA proteins, gibberellin signaling, brassinosteroid signaling, auxin biosynthesis, COP1, circadian clock, red:far-red ratio, plant light signaling, canopy light environment
MeSH terms: Gibberellins, Light, Phytochrome, Plant Growth Regulators, Plants, Signal Transduction, Ecosystem, Photoreceptors, Plant

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Photoreceptor Signaling Networks in Plant Responses to Shade

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