Navigation Links
A plant which acclimatizes with no exterior influence
Date:11/25/2013

Plants have a love-hate relationship with sunlight. While some wavelengths are indispensable to them for performing photosynthesis, others, such as UV-B, are deleterious. Therefore, plants are equipped to detect these highly toxic rays and mount their defences. A team led by Roman Ulm, Professor at the Faculty of Sciences at the University of Geneva (UNIGE), Switzerland, has generated a transgenic plant which acclimatises constitutively, regardless of the level of UV-B. This plant possesses a constantly active receptor, which endows it with a higher UV resistance, associated with increased flavonoid production, substances which function as a 'sunscreen' and as antioxidants. Flavonoid-rich plants also provide a powerful source of antioxidants for humans. As described in the journal PNAS, this transgenic plant is an excellent model system within the framework of basic research, as well as studies aiming at improving crop plants.

Plants have an arsenal of receptors that enable them to benefit from all components of solar radiation. While the energy of some photons is captured by chlorophyll to produce sugar, other wavelengths regulate essential processes, such as flowering, seed germination, shade avoidance and phototropism. 'Even ultraviolet B rays, despite their harmfulness, are used by plants as an environmental stimulus and influence plant growth and development', points out Roman Ulm, Professor at the UNIGE Department of Botany and Plant Biology.

A maximal survival response

Ultraviolet B rays (UV-B), which account for 0.5% of light energy, are dangerous for living organisms as they lead to the formation of free radicals in cells and damage their DNA. Unable to escape them, plants are forced to find a way to protect themselves. They detect UV-B rays thanks to a receptor knows as UVR8, thus triggering a biochemical chain reaction within the cells and allowing them to mount their defences. These are notably made up of flavonoids, which
'/>"/>

Contact: Roman Ulm
roman.ulm@unige.ch
022-379-3650
Universit de Genve
Source:Eurekalert

Page: 1 2

Related biology news :

1. The future of plant science - a technology perspective
2. The future of plant science a technology perspective
3. Bone marrow transplant arrests symptoms in model of Rett syndrome
4. American Society of Plant Biologists honors early career women scientists
5. Not just for the birds: Man-made noise has ripple effects on plants, too
6. Plant DNA speaks English, identifies new species
7. Human noise has ripple effects on plants
8. New databases harvest a rich bounty of information on crop plant metabolism
9. Plant research reveals new role for gene silencing protein
10. Plants mimic scent of pollinating beetles
11. Stomata development in plants unraveled -- a valuable discovery for environmental research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/17/2014)... from the Copenhagen Centre for Social Evolution and Yale ... that birth weight and -length can partially predict the ... as autism and schizophrenia later in life. The study ... subsequent hospital diagnoses for up to 30 years, and ... study is published today in the Proceedings of ...
(Date:9/17/2014)... the human retinoblastoma protein gene are a leading cause ... turned to fruit fly eyes to unlock the secrets ... paper featured on the cover of the current issue ... State University researchers provide the first detailed examination of ... the human cancer gene, said Irina Pushel, MSU undergraduate ...
(Date:9/17/2014)... 1960s. The typical development phases of trees and stands ... as much as 70 percent. This was the outcome ... Universitt Mnchen based on long-term data from experimental forest ... findings were published recently in Nature Communications . ... topic, with the very survival of large forest ecosystems ...
Breaking Biology News(10 mins):Size at birth affects risk of adolescent mental health disorders 2Size at birth affects risk of adolescent mental health disorders 3Abnormal properties of cancer protein revealed in fly eyes 2Global change: Trees continue to grow at a faster rate 2Global change: Trees continue to grow at a faster rate 3
... York University and Rockefeller University have discovered that ... have key roles in gene regulation, can team ... are a recently discovered large class of regulatory, ... in target messenger RNA to regulate their stability ...
... natural process that repairs damage to the human ... has helped establish a method of gene therapy ... disease-causing genes. , The findings are available online ... repair process known as homologous recombination, Dr. Matthew ...
... that allows immune cells known as neutrophils to protect ... at Washington University School of Medicine in St. Louis ... the development of an arthritis-like disorder by making the ... newly identified role for the gene, Foxo3a, may open ...
Cached Biology News:NYU, Rockefeller researchers find complexity of regulation by microRNA genes 2Researchers pioneer new gene therapy technique using natural repair process 2Researchers pioneer new gene therapy technique using natural repair process 3Disabling gene defuses rheumatoid arthritis in mice 2Disabling gene defuses rheumatoid arthritis in mice 3
(Date:9/17/2014)... VIENNA , Sept. 17, 2014 ... compelling, quantitative data from a study of the cost ... at the 50 th Annual Meeting of the ... a poster session today, Christian Frois , Ph.D., ... in a series of planned Intarcia-sponsored, retrospective studies to ...
(Date:9/17/2014)... 2014 /PRNewswire/ - SQI Diagnostics Inc. (TSX-V: SQD) (OTCQX: ... proprietary technologies and products for advanced microarray diagnostics, today ... trading in the United States ... commence on September 17, 2014 on the OTCQX under ... on the TSX Venture Exchange under its existing symbol ...
(Date:9/17/2014)... 17 de septiembre de 2014  Cryoport, ... proveedor mundial de soluciones logísticas avanzadas criogénicas ... la vida, anunció hoy la contratación de ... con sede en Rótterdam, Países Bajos, para ... Europa en rápido crecimiento. Según los términos ...
(Date:9/17/2014)... Scotland , September 17, 2014 /PRNewswire/ ... new mode of action from a truly ... decade  MGB Biopharma, a biopharmaceutical ... anti-infectives, announces today that it has secured ... its lead antibacterial, MGB-BP-3, against a range ...
Breaking Biology Technology:Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 2Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 3Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 4Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 5SQI Diagnostics to begin Trading on the OTCQX Marketplace in the United States 2SQI Diagnostics to begin Trading on the OTCQX Marketplace in the United States 3Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 2Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 3Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 4Cryoport contrata a Broekman Group para mejorar su apoyo operativo y logístico en Europa 5MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 2MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 3MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 4MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 5MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 6MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 7
... the Nobel Prize shows a cat resting in a ... around graphene, which, at one atom thick, is the ... A significant obstacle to realizing graphene,s potential lies in ... sleeping cat. For now, material scientists stitch individual graphene ...
... Professor Federico Rosei of the INRS Energy Materials ... the prestigious 2010 Friedrich Wilhelm Bessel Research Award given ... 25 of these awards annually to young, high level ... recognition of the caliber and scope of his research ...
... ... ... ... longUrl, so we need to grab the first one. for (var r in data.results) { first_result = data.results[r]; break; ...
Cached Biology Technology:Graphene's strength lies in its defects 2INRS professor Federico Rosei receives a 2010 Friedrich Wilhelm Bessel Research Award 2YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 2YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 3YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 4YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 5YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 6YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 7YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 8YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 9YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 10YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 11YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 12YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 13YM BioSciences Reports Fiscal First Quarter 2011 Operational and Financial Results 14