Blue-light regulation of phytoene dehydrogenase ( carB ) gene expression in Mucor circinelloides

Planta ◽  
2000 ◽  
Vol 210 (6) ◽  
pp. 938-946 ◽  
Author(s):  
Antonio Velayos ◽  
José L. Blasco ◽  
María I. Alvarez ◽  
Enrique A. Iturriaga ◽  
Arturo P. Eslava
Keyword(s):  
Gene Expression ◽  
Blue Light ◽  
Light Regulation ◽  
Mucor Circinelloides ◽  
Phytoene Dehydrogenase

scholarly journals Redox and light regulation of gene expression in photosynthetic prokaryotes

2003 ◽  
Vol 358 (1429) ◽  
pp. 147-154 ◽  
Author(s):  
Carl Bauer ◽  
Sylvie Elsen ◽  
Lee R. Swem ◽  
Danielle L. Swem ◽  
Shinji Masuda
Keyword(s):  
Gene Expression ◽  
Blue Light ◽  
Carbon Fixation ◽  
Rhodobacter Capsulatus ◽  
Bacterial Species ◽  
Regulation Of Gene Expression ◽  
Light Regulation ◽  
Disulphide Bond ◽  
Control Synthesis ◽  
Cellular Redox

All photosynthetic organisms control expression of photosynthesis genes in response to alterations in light intensity as well as to changes in cellular redox potential. Light regulation in plants involves a well–defined set of red– and blue–light absorbing photoreceptors called phytochrome and cryptochrome. Less understood are the factors that control synthesis of the plant photosystem in response to changes in cellular redox. Among a diverse set of photosynthetic bacteria the best understood regulatory systems are those synthesized by the photosynthetic bacterium Rhodobacter capsulatus . This species uses the global two–component signal transduction cascade, RegB and RegA, to anaerobically de–repress anaerobic gene expression. Under reducing conditions, the phosphate on RegB is transferred to RegA, which then activates genes involved in photosynthesis, nitrogen fixation, carbon fixation, respiration and electron transport. In the presence of oxygen, there is a second regulator known as CrtJ, which is responsible for repressing photosynthesis gene expression. CrtJ responds to redox by forming an intramolecular disulphide bond under oxidizing, but not reducing, growth conditions. The presence of the disulphide bond stimulates DNA binding activity of the repressor. There is also a flavoprotein that functions as a blue–light absorbing anti–repressor of CrtJ in the related bacterial species Rhodobacter sphaeroides called AppA. AppA exhibits a novel long–lived photocycle that is initiated by blue–light absorption by the flavin. Once excited, AppA binds to CrtJ thereby inhibiting the repressor activity of CrtJ. Various mechanistic aspects of this photocycle will be discussed.

Blue-light regulation of ZmPHOT1 and ZmPHOT2 gene expression and the possible involvement of Zmphot1 in phototropism in maize coleoptiles

Planta ◽  
2014 ◽  
Vol 240 (2) ◽  
pp. 251-261 ◽  
Author(s):  
Hiromi Suzuki ◽  
Ai Okamoto ◽  
Akane Kojima ◽  
Takeshi Nishimura ◽  
Makoto Takano ◽  
...  
Keyword(s):  
Gene Expression ◽  
Blue Light ◽  
Light Regulation

scholarly journals Cold priming uncouples light- and cold-regulation of gene expression in Arabidopsis thaliana

2020 ◽  
Author(s):  
Andras Bittner ◽  
Jörn van Buer ◽  
Margarete Baier
Keyword(s):  
Gene Expression ◽  
Arabidopsis Thaliana ◽  
Plant Pathogens ◽  
Cold Treatment ◽  
Regulation Of Gene Expression ◽  
Light Regulation ◽  
High Light ◽  
Cold Stimulus ◽  
Expression Of Genes ◽  
Specific Manner

Abstract Background: The majority of stress-sensitive genes responds to cold and high light in the same direction, if plants face the stresses for the first time. As shown recently for a small selection of genes of the core environmental stress response cluster, pre-treatment of Arabidopsis thaliana with a 24 h long 4 °C cold stimulus modifies cold regulation of gene expression for up to a week at 20 °C, although the primary cold effects are reverted within the first 24 h. Such memory-based regulation is called priming. Here, we analyse the effect of 24 h cold priming on cold regulation of gene expression on a transcriptome-wide scale and investigate if and how cold priming affects light regulation of gene expression.Results: Cold-priming affected cold and excess light regulation of a small subset of genes. In contrast to the strong gene co-regulation observed upon cold and light stress in not-primed plants, most priming-sensitive genes were regulated in a stressor-specific manner in cold-primed plant. Furthermore, almost as much genes were inversely regulated as co-regulated by a 24 h long 4 °C cold treatment and exposure to heat-filtered high light (800 µmol quanta m-2 s-1). Gene ontology enrichment analysis revealed that cold priming preferentially supports expression of genes involved in the defence against plant pathogens upon cold triggering. The regulation took place on the cost of the expression of genes involved in growth regulation and transport. On the contrary, cold priming resulted in stronger expression of genes regulating metabolism and development and weaker expression of defence genes in response to high light triggering. qPCR with independently cultivated and treated replicates confirmed the trends observed in the RNASeq guide experiment.Conclusion: A 24 h long priming cold stimulus activates a several days lasting stress memory that controls cold and light regulation of gene expression and adjusts growth and defence regulation in a stressor-specific manner.

scholarly journals Effect of Red and Blue Light on Anthocyanin Accumulation and Differential Gene Expression in Strawberry (Fragaria × ananassa)

Molecules ◽  
2018 ◽  
Vol 23 (4) ◽  
pp. 820 ◽  
Author(s):  
Yunting Zhang ◽  
Leiyu Jiang ◽  
Yali Li ◽  
Qing Chen ◽  
Yuntian Ye ◽  
...  
Keyword(s):  
Gene Expression ◽  
Blue Light ◽  
Differential Gene Expression ◽  
Anthocyanin Accumulation ◽  
Fragaria Ananassa ◽  
Differential Gene

Lack of Blue Light Regulation of Antioxidants and Chilling Tolerance in Basil

2021 ◽  
Author(s):  
Dorthe H. Larsen ◽  
Hua Li ◽  
Samikshya Shrestha ◽  
Julian C. Verdunk ◽  
Celine C.S. Nicole ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Regulation ◽  
Chilling Tolerance

scholarly journals UV and blue light signalling: pathways regulating chalcone synthase gene expression in Arabidopsis

2001 ◽  
Vol 151 (1) ◽  
pp. 121-131 ◽  
Author(s):  
Gareth I. Jenkins ◽  
Joanne C. Long ◽  
Helena K. Wade ◽  
Matthew R. Shenton ◽  
Tatiana N. Bibikova
Keyword(s):  
Gene Expression ◽  
Blue Light ◽  
Chalcone Synthase ◽  
Signalling Pathways ◽  
Chalcone Synthase Gene ◽  
Light Signalling
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