Photoreceptor signaling networks in plant responses to shade.

By J. Casal. Annual Review of Plant Biology, 2013

772 citations recorded by the source corpus.

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.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/45e5f81806007d5c77d0c6b7348dfeb19348c5d9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Plant Science

1. S. Proietti
2. Anjana Jajoo
3. R. Paradiso

Citations in the corpus

• Coordination of Cryptochrome and Phytochrome Signals in the Regulation of Plant Light Responses (2017, background): “This response is known as low R/FR-induced SAS [42,43].”
• Light-Quality Manipulation to Control Plant Growth and Photomorphogenesis in Greenhouse Horticulture: The State of the Art and the Opportunities of Modern LED Systems (2021, background): “These shading conditions induce a complex response defined shade avoidance, including stem and petiole elongation, lower leaf mass, stomata density and chlorophyll content per unit of leaf area, and early flowering (Casal 2013).”
• Photosynthetic efficiency in sun and shade plants (2018, background): “Plants could sense the variation in quality and quantity of light falling on them through a network of phytohormones and thus regulate their growth accordingly (Casal 2013, Kurepin and Pheris 2014).”
• Effect of Light-Emitting Diodes (LEDs) on the Quality of Fruits and Vegetables During Postharvest Period: a Review (2020, background): “…is responsible for the absorption of far-red and red light (Briggs and Olney 2001; Bentsink and Koornneef 2008; Brazaityte et al. 2006; Casal 2013; Cookson and Granier 2006; Dutta Gupta 2017; Ouzounis et al. 2014; Samuoliene et al. 2013; Reinbothe and Reinbothe 1996; Park and Runkle…”