Plant Cryptochromes and Signaling

Cashmore, Anthony R.

doi:10.1002/352760510x.ch11

Cited by 2 publications

(2 citation statements)

References 27 publications

(37 reference statements)

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“…Both cryptochromes and phytochromes regulate the expression of many light‐inducible genes (Cashmore, 2005; Huq and Quail, 2005). We chose to examine the expression of two genes, CHLOROPHYLL A/B BINDING PROTEIN 3 ( CAB3 ) and CHALCONE SYNTHASE ( CHS ), in these transgenic lines.…”

Section: Resultsmentioning

confidence: 99%

“…Cryptochromes, on the other hand, sense blue light signals and regulate many light responses that overlap with phytochromes, from seedling development to flowering initiation. CRY1 encodes a flavoprotein with sequence similarity to photolyases that mediate repair of DNA damage by UV light (Cashmore, 2005). cry2 is involved in the control of photoperiodic flowering, in addition to its role in the regulation of the seedling de‐etiolation responses (Guo et al.…”

Section: Introductionmentioning

confidence: 99%

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HYPERSENSITIVE TO RED AND BLUE 1 and its C‐terminal regulatory function control FLOWERING LOCUS T expression

Kang

Zhou²,

Sun³

et al. 2007

The Plant Journal

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The red and far-red light-absorbing phytochromes and UV-A/blue light-absorbing cryptochromes regulate seedling de-etiolation and flowering responses. The signaling steps that mediate the photoreceptor regulation on key flowering genes remain largely unknown. We report that a previously identified photomorphogenic mutant, hypersensitive to red and blue 1 (hrb1), flowered late and showed attenuated expression of FLOWERING LOCUS T (FT) over both long days and short days. Transgenic plants that overexpress the full-length HRB1, or its C-terminal half, flowered early and accumulated more FT messages under short-day conditions. The transgenic plants also displayed hyposensitive de-etiolation phenotypes, and the expression of these phenotypes requires the action of PIF4. The double mutant of hrb1/cry2 showed a flowering phenotype and an FT expression pattern similar to hrb1 under long-day conditions, suggesting that HRB1 may function downstream of cry2 under long-day conditions. In contrast, hrb1/phyB-9 showed a flowering phenotype and an FT expression pattern similar to phyB-9 over both long days and short days, indicating a modulatory role of HRB1 in the flowering pathway mediated by phyB. Overexpression of HRB1 did not affect the expression of the central clock oscillators, TOC1 and CCA1. HRB1 therefore represents a signaling step that regulates FT expression downstream of red and blue light perception.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

HYPERSENSITIVE TO RED AND BLUE 1 and its C‐terminal regulatory function control FLOWERING LOCUS T expression

Kang

Zhou²,

Sun³

et al. 2007

The Plant Journal

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Cryptochromes

Batschauer

Banerjee

Pokorný

2018

Annual Plant Reviews Online

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The sections in this article are Introduction Cryptochrome Genes and Their Evolution Cryptochrome Domains, Chromophores and Structure Cryptochrome Biochemistry and Spectroscopy Expression and Biological Activity of Cryptochromes Cryptochrome Signalling Summary Acknowledgements

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Plant Cryptochromes and Signaling

Cited by 2 publications

References 27 publications

HYPERSENSITIVE TO RED AND BLUE 1 and its C‐terminal regulatory function control FLOWERING LOCUS T expression

HYPERSENSITIVE TO RED AND BLUE 1 and its C‐terminal regulatory function control FLOWERING LOCUS T expression

Cryptochromes

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