scholarly journals Genetic Linkages Between Circadian Clock-Associated Components and Phytochrome-Dependent Red Light Signal Transduction in Arabidopsis thaliana

2007 ◽  
Vol 48 (7) ◽  
pp. 971-983 ◽  
Author(s):  
Shogo Ito ◽  
Norihito Nakamichi ◽  
Yuko Nakamura ◽  
Yusuke Niwa ◽  
Takahiko Kato ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Arabidopsis Thaliana ◽  
Circadian Clock ◽  
Red Light ◽  
Light Signal ◽  
Light Signal Transduction ◽  
Genetic Linkages

Light Signal Transduction in Higher Plants

2004 ◽  
Vol 38 (1) ◽  
pp. 87-117 ◽  
Author(s):  
Meng Chen ◽  
Joanne Chory ◽  
Christian Fankhauser
Keyword(s):  
Signal Transduction ◽  
Higher Plants ◽  
Light Signal ◽  
Light Signal Transduction

scholarly journals Photobiology: Light signal transduction and photomorphogenesis

2020 ◽  
Vol 62 (9) ◽  
pp. 1267-1269
Author(s):  
Hongtao Liu ◽  
Rongcheng Lin ◽  
Xing Wang Deng
Keyword(s):  
Signal Transduction ◽  
Light Signal ◽  
Light Signal Transduction

scholarly journals Genome-Wide Identification of PIFs in Grapes (Vitis vinifera L.) and Their Transcriptional Analysis under Lighting/Shading Conditions

Genes ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 451 ◽  
Author(s):  
Kekun Zhang ◽  
Ting Zheng ◽  
Xudong Zhu ◽  
Songtao Jiu ◽  
Zhongjie Liu ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Amino Acid ◽  
Vitis Vinifera ◽  
Developmental Stages ◽  
Light Signal ◽  
Transcriptional Analysis ◽  
Vitis Vinifera L ◽  
Syntenic Block ◽  
Transcription Level ◽  
Light Signal Transduction

Phytochrome-interacting factors (PIFs), as the basic helix–loop–helix (bHLH) transcription factors, are the primary signaling partners for phytochromes (PHY) that play a key role in PHY-mediated light signal transduction. At present, there are few studies on PIFs in fruit trees. In order to clarify the status of PIFs in grapevines, we identified members of the grape PIFs family and conducted phylogenetic and expression analysis. We identified PIF1, PIF3, PIF4, and PIF7 in PIFs families of the grapevine (Vitis vinifera L.), which were distributed on four different chromosomes with similar gene structures. Except for the closer relationship with PIF1 of citrus, PIFs of grape were distant from the other fruit species such as apple, pear, peach, and strawberry. The VvPIFs (except VvPIF4) were located in the syntenic block with those from Arabidopsis thaliana, Solanum lycopersicum, or Citrus sinensis. In addition to PIF1, all PIFs in grapevines have conserved active PHYB binding (APB) sequences. VvPIF1 has a conserved PIF1-specific active PHYA binding (APA) sequence, while amino acid mutations occurred in the specific APA sequence in VvPIF3. Interestingly, two specific motifs were found in the PIF4 amino acid sequence. The photoreceptor-related elements in the VvPIFs promoter region were the most abundant. PIF1, LONG HYPOCOTYL 5 (HY5) and PIF3, PIF4, GIBBERELLIC ACID INSENSITIVE 1 (GAI1) may interact with each other and participate together in light signal transduction. The relative expression levels of the VvPIFs showed diverse patterns in the various organs at different developmental stages, of which PIF4 was most highly expressed. Prior to maturation, the expression of PIF4 and PIF7 in the skin of the different cultivars increased, while the expression of all PIFs in the flesh decreased. The transcription level of PIFs in grape leaves was sensitive to changes in lighting and shading. Shading treatment was beneficial for enhancing the transcription level of VvPIFs, but the effect on VvPIF3 and VvPIF4 was time-controlled. We concluded that PIFs in grapevines are both conservative and species-specific. The identification and analysis of grape PIFs could provide a theoretical foundation for the further construction of grape light regulation networks.

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