Navigation Links
Key component indentified that helps plants go green
Date:6/29/2010

role in the making of chloroplasts and the growth of the stem, said Chen, who is the first author on the study.

One of the first things that happens when the plant detects light is that these phytochromes move from the cell's cytoplasm to its nucleus, where the genes are kept. The photoreceptors gather in discrete spots known as phytochrome nuclear bodies. In an earlier study, Chen had found that the size and number of phytochrome nuclear bodies was directly related to light intensity.

Chen, who started this line of work as a postdoctoral researcher in Chory's lab at the Salk Institute, ran genetic screens for mutants with abnormal phytochrome nuclear bodies. He identified a new gene, hemera, that seems to be required for both the localization and the signaling of phytochrome.

He named the gene for the Greek goddess of daylight, Hemera. It is present in all land plants studied so far.

Mutant plants without hemera were found to have dramatically reduced sensitivity to red and far-red light, they failed to develop chloroplasts, were albino, and died while still only seedlings. Without Hemera, "a plant is blind to light and the chloroplasts can't develop," Chen said.

The prevailing model of chloroplast development involves signaling molecules called PIFs that hold chloroplast development back when the plant senses darkness. But when phytochromes are activated by light, they destroy the PIFs, clearing the way for chloroplast development. PIFs tended to aggregate around these phytochrome nuclear bodies before being destroyed. Hemera also tended to be found near the nuclear bodies, suggesting that the nuclear bodies were the site of PIF destruction.

In a series of experiments with hemera mutants, the team found these plants tended to have smaller phytochrome nuclear bodies and were unable to remove PIFs in light, which could explain why the mutants weren't making chloroplasts.

The team also found that hemera
'/>"/>

Contact: Karl Leif Bates
karl.bates@duke.edu
919-681-8054
Duke University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Broccoli component limits breast cancer stem cells, U-M study finds
2. Natural S-Equol suggested as critical component in SE5-OH for reducing menopausal hot flushes
3. NASA technology key component of new diagnostic aid from DynaDx
4. Green tea component may help preserve stored platelets, tissues
5. Purple sweet potato means increased amount of anti-cancer components
6. InVitria to Unveil Powerful Cell Culture Media Component ZAP-CHO
7. DNA component can stimulate and suppress the immune response
8. Scripps research scientists identify blood component that turns bacteria virulent
9. Obscure fungus produces diesel fuel components
10. Key component of debilitating lung disease identified
11. New robot scouts best locations for components of undersea lab
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/22/2015)... , May 22, 2015 According ... by Solution (2D, 3D, Thermal, Emotion, Forensic), by Software (Middleware, ... (Government and Utilities, Consumer and Home) - Global Forecast ... grow from $2.77 Billion in 2015 to $6.19 Billion ... Browse 79 market data Tables and   43 ...
(Date:5/21/2015)... -- According to a new market ... Services), by Applications (Surveillance (Airborne, Maritime, Land), Threat ... & Defense & Commercial) - Global Forecast to ... expected to grow from $7252.0 Million in 2015 ... Annual Growth Rate (CAGR) of 6.6%. ...
(Date:5/21/2015)... The Sync Project™ , a global ... today announced a collaborative partnership with Berklee,s Institute ... on collaboration on original research, joint course development and ... collaboration, The Sync Project and BerkleeICE are exploring the ... the 2015-2016 academic year.  The course ...
Breaking Biology News(10 mins):Facial Recognition Market Worth $6.19 Billion by 2020 2Facial Recognition Market Worth $6.19 Billion by 2020 3Thermal Imaging Market Worth $9,998.9 Million by 2020 2Thermal Imaging Market Worth $9,998.9 Million by 2020 3Thermal Imaging Market Worth $9,998.9 Million by 2020 4The Sync Project Announces Partnership with Berklee College of Music's Institute for Creative Entrepreneurship 2The Sync Project Announces Partnership with Berklee College of Music's Institute for Creative Entrepreneurship 3
... abuzz after using fruit flies to find new ways ... cellsresults that could one day be used to advance ... that caffeine interferes with processes in cancer cells that ... in using the stimulant as a chemotherapy treatment. But ...
... fish, with an intriguing past, now has had its ... genetic changes that accompanied the adaptation from an aquatic ... by Chris Amemiya, PhD, Director of Molecular Genetics at ... Professor of Biology at the University of Washington, will ...
... to ward off viruses by activating a naturally occurring protein ... disrupts the levels of cholesterol required in cell membranes to ... in molecular microbiology and immunology at the Keck School of ... to fight a variety of viral infections. "Previous studies ...
Cached Biology News:Genome sequencing of the living coelacanth sheds light on the evolution of land vertebrate 2Genome sequencing of the living coelacanth sheds light on the evolution of land vertebrate 3University of Southern California scientists reveal natural process that blocks viruses 2
(Date:5/22/2015)... May 22, 2015 According to ... (1D & 2D Gel Electrophoresis, Agarose & Polyacrylamide Gel, ... Informatics), by Application & by End User - Global ... is expected to reach around $1.98 Billion by 2020 ... 2015 to 2020. Browse 226 ma ...
(Date:5/22/2015)... Charm Sciences, Inc. is pleased to ... Grain Inspection, Packers and Stockyards Administration (GIPSA) has ... to monitor aflatoxin in grains utilizing Charm’s ROSA ... Aflatoxin Quantitative Test (solvent-based). , The Charm ... Extraction Technology to extract aflatoxin from the sample ...
(Date:5/22/2015)... (PRWEB) May 22, 2015 Knowledgent ... white paper that explores the potential of big data ... white paper was developed to help life sciences and ... leverage data to gain critical business insights. , The ... amounts of data driven by patient profiling, compliance and ...
(Date:5/22/2015)... Baylor Research Institute (BRI) at Dallas ... in Phoenix, AZ , today announce ... treatments for patients with a broad range of cancers. Aligning ... clinical trials and access to technology to drive the development ... bedside across Baylor Scott & White Health,s 49 ...
Breaking Biology Technology:Electrophoresis Market Worth $1.98 Billion by 2020 2Electrophoresis Market Worth $1.98 Billion by 2020 3Electrophoresis Market Worth $1.98 Billion by 2020 4USDA-GIPSA (FGIS) Awards 5 Year Contract for Aflatoxin Tests to Charm Sciences 2New White Paper Explores the Potential of Big Data Analytics in Life Sciences and Healthcare 2Precision Medicine Collaboration to Increase Options for Cancer Patients 2Precision Medicine Collaboration to Increase Options for Cancer Patients 3Precision Medicine Collaboration to Increase Options for Cancer Patients 4
... and Preclinical-Stage Compounds ... in Merck KGaA ... drug discovery and development company, announced today that,it will collaborate ... discover new applications for drug candidates. KineMed,s,proprietary pathway-based drug discovery ...
... CHELMSFORD, Mass., Aug. 28 Magellan Biosciences, ... that,Steven E. Diamond, PhD, has joined the ... to Magellan from Siemens Medical Solutions Diagnostics,(formerly ... research and,development, for the point-of-care product lines: ...
... Laboratories, a national,clinical and anatomic pathology reference laboratory ... announced today that it has,renewed a multisource group ... the nation,s largest purchasing alliances of leading,hospitals and ... between ARUP and Premier which has been in ...
Cached Biology Technology:KineMed to Collaborate With Merck KgaA to Validate New Applications for Drug Development Candidates 2Magellan Biosciences Names Steven E. Diamond, PhD, Chief Scientific Officer 2Magellan Biosciences Names Steven E. Diamond, PhD, Chief Scientific Officer 3ARUP Laboratories and Premier Extend Contract for Reference Laboratory Testing Services 2
Caveolin Sampler Kit 10g each...
Slide Chambers are convenient for performing pre-hybridization incubations and post-hybridization washes with tissue sections mounted on standard glass microscope slides. Each chamber holds up to 5 s...
Cord blood endothelial progenitor cells, For immunohistochemistry (IHC) Cell Chip with Human Umbilical Cord Blood Progenitor Cells...
Umbilical cord blood basophils, For immunohistochemistry (IHC)...
Biology Products: