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Control of Plant Growth and Defense by Photoreceptors: From Mechanisms to Opportunities in Agriculture
- Source :
- Molecular Plant, 14(1), 61. Cell Press
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- Plants detect and respond to the proximity of competitors using light signals perceived by photoreceptor proteins. A low ratio of red to far-red radiation (R:FR ratio) is a key signal of competition that is sensed by the photoreceptor phytochrome B (phyB). Low R:FR ratios increase the synthesis of growth-related hormones, including auxin and gibberellins, promoting stem elongation and other shade-avoidance responses. Other photoreceptors that help plants to optimize their developmental configuration and resource allocation patterns in the canopy include blue light photoreceptors, such as cryptochromes and phototropins, and UV receptors, such as UVR8. All photoreceptors act by directly or indirectly controlling the activity of two major regulatory nodes for growth and development: the COP1/SPA ubiquitin E3 ligase complex and the PIF transcription factors. phyB is also an important modulator of hormonal pathways that regulate plant defense against herbivores and pathogens, including the jasmonic acid signaling pathway. In this Perspective, we discuss recent advances on the studies of the mechanisms that link photoreceptors with growth and defense. Understanding these mechanisms is important to provide a functional platform for breeding programs aimed at improving plant productivity, stress tolerance, and crop health in species of agronomic interest, and to manipulate the light environments in protected agriculture.
- Subjects :
- avoidance
0106 biological sciences
0301 basic medicine
Crops, Agricultural
Photoreceptors, Plant
UVR8
Phototropin
Light Signal Transduction
Plant Development
Plant Science
Biology
01 natural sciences
03 medical and health sciences
chemistry.chemical_compound
Cryptochrome
Taverne
Plant defense against herbivory
growth–defense trade-off
Plant Immunity
Jasmonate
Molecular Biology
phytochrome
Phytochrome
Jasmonic acid
fungi
Photoreceptor protein
Agriculture
immunity
photoreceptor
jasmonate
Cell biology
030104 developmental biology
chemistry
shade
010606 plant biology & botany
Subjects
Details
- ISSN :
- 16742052
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Molecular Plant
- Accession number :
- edsair.doi.dedup.....2ab31e62dd07f8493561a843c40d10b1