Light modulates the gravitropic responses through organ-specific PIFs and HY5 regulation ofLAZY4expression inArabidopsis
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چکیده
منابع مشابه
Light regulation of gibberellin biosynthesis in pea is mediated through the COP1/HY5 pathway.
Light regulation of gibberellin (GA) biosynthesis occurs in several species, but the signaling pathway through which this occurs has not been clearly established. We have isolated a new pea (Pisum sativum) mutant, long1, with a light-dependent elongated phenotype that is particularly pronounced in the epicotyl and first internode. The long1 mutation impairs signaling from phytochrome and crypto...
متن کاملLight Regulation of Plant Development: HY5 Genomic Binding Sites
Photomorphogenesis is a critical developmental process in plants involving numerous signaling pathways that coordinately regulate the inhibition of stem elongation, differentiation of chloroplasts, accumulation of chlorophyll, and leaf expansion that accompany the transition from dark to light as a seedling emerges from the soil. Arabidopsis HY5 encodes a bZIP transcription factor that is a pos...
متن کاملEthylene modulates flavonoid accumulation and gravitropic responses in roots of Arabidopsis.
Plant organs change their growth direction in response to reorientation relative to the gravity vector. We explored the role of ethylene in Arabidopsis (Arabidopsis thaliana) root gravitropism. Treatment of wild-type Columbia seedlings with the ethylene precursor 1-aminocyclopropane carboxylic acid (ACC) reduced root elongation and gravitropic curvature. The ethylene-insensitive mutants ein2-5 ...
متن کاملThe HY5-PIF Regulatory Module Coordinates Light and Temperature Control of Photosynthetic Gene Transcription
The ability to interpret daily and seasonal alterations in light and temperature signals is essential for plant survival. This is particularly important during seedling establishment when the phytochrome photoreceptors activate photosynthetic pigment production for photoautotrophic growth. Phytochromes accomplish this partly through the suppression of phytochrome interacting factors (PIFs), neg...
متن کاملFrenemies: antagonistic bHLH/bZIP transcription factors integrate light and reactive oxygen species signaling in Arabidopsis.
Although plants are autotrophs, they don’t start out that way. During early plant growth, reserves stored by the mother plant are mobilized to provide the seedling with energy and carbon until the switch to autotrophic growth occurs (Chen and Thelen, 2010). This crucial developmental switch involves light signal transduction and the production of reactive oxygen species (ROS), including singlet...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2020
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.2005871117