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:7/31/2015)... de julio de 2015 La 10 th ... por medio de BGI del 22 al 25 de octubre de ... Este año, la conferencia celebra su décimo aniversario. Desde ... en una de las reuniones anuales más influyentes del mundo ... reuniones más dinámicas, entusiastas y mejores a nivel científico. ...
(Date:7/31/2015)... , Jul. 31, 2015 NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce market ... it has filed provisional patent 62/198989 for ... invention highlights a method to advance crypto-currencies such as ... introducing a common, uniform way to manage all payments.  ...
(Date:7/30/2015)... 30, 2015 Cellecta, Inc., a U.S.-based ... analysis and biomarker discovery, announced the release of ... targeting all human protein coding genes. CRISPR technology ... a gene,s function. Cellecta,s new Human Whole Genome ... tool so that researchers can investigate in a ...
Breaking Biology News(10 mins):La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 2La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 3NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2
... C (4.3 F) above pre-industrial levels even under extremely ... efforts to clean up particulate pollution continue to be ... of researchers at Scripps Institution of Oceanography at UC ... what the world,s leading climate change authority recently set ...
... By coupling a kicked-up version of microscopy with miniscule particles ... so deep into living tissue that they can see molecules ... the researchers believe that their new approach can have a ... a tumor as it is removed from the body to ...
... Cambridge, UK Any way you slice it, the ... , The planarian, a flatworm normally living in freshwater, ... a single planarian cut into 200 pieces can generate 200 ... not merely a fascinating master of regeneration, but can help ...
Cached Biology News:Warming world in range of dangerous consequences 2Warming world in range of dangerous consequences 3New technique sees into tissue at greater depth, resolution 2New technique sees into tissue at greater depth, resolution 3
(Date:7/29/2015)... According to a new market research report, ... , published by Mordor Intelligence, the Global market is expected ... 2020, with North America being the ... global market size. The Global market for Stem Cells is ... period of (2015-2020).      (Logo: http://photos.prnewswire.com/prnh/20150428/740799) , ...
(Date:7/29/2015)... 29, 2015  AsureQuality and Ubiquitome have agreed ... applications in food and primary production sectors. The ... PCR device, the Freedom4. AsureQuality provides ... the supermarket shelf for producers, processors and Competent ... animal disease control and pest management and surveillance ...
(Date:7/29/2015)...  Therapath Neuropathology ( www.Therapath.com ), a leader ... and Military Medical centers both domestically and worldwide.  ... Sweat Gland Nerve Fiber Density (SGNFD) for the ... Demonstration of a reduction in ... skin biopsy is a highly sensitive and specific ...
(Date:7/29/2015)... CITY , July 29, 2015 /PRNewswire/ - Aeterna ... today announced it has selected an optimized Erk ... milestone in the development of a new class ... MAPK pathway represents a prime target for therapeutic ... antitumor activities and survival benefits for B-Raf and ...
Breaking Biology Technology:Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3AsureQuality and Ubiquitome Partner on Applications for Mobile Molecular Food Safety Testing 2Neuropathology services for VA and Military health systems 2Aeterna Zentaris Announces Optimized Erk Inhibitor Compounds For Further Development 2Aeterna Zentaris Announces Optimized Erk Inhibitor Compounds For Further Development 3
... LOUIS, June 10 KV Pharmaceutical Company,(NYSE: ... that,develops, manufactures, acquires and markets technology-differentiated,branded products ... has become aware of litigation filed by ... challenging the patent rights,associated with PrimaCare ONE(R), ...
... pipeline of biologics ... disease and cancer, CAMBRIDGE, Mass., June 10 Merrimack ... of,novel treatments for autoimmune disease and cancer, today announced that ... financing., Existing and new investors participated in the financing ...
... - Oncolytics Biotech Inc.,("Oncolytics") (TSX:ONC, NASDAQ:ONCY) announced ... Phase 1/2 clinical trial for patients with,metastatic ... concurrent,intravenous (IV) and intraperitoneal (IP) administration of ... The National,Cancer Institute (NCI), part of the ...
Cached Biology Technology:KV Pharmaceutical Company Comments on Legal Development in Its Branded Pharmaceutical Business 2KV Pharmaceutical Company Comments on Legal Development in Its Branded Pharmaceutical Business 3Merrimack Pharmaceuticals Raises $60 Million in Private Financing 2Oncolytics Biotech Inc. Announces Start of Enrolment in Phase 1/2 Ovarian Cancer Clinical Trial with REOLYSIN(R) 2Oncolytics Biotech Inc. Announces Start of Enrolment in Phase 1/2 Ovarian Cancer Clinical Trial with REOLYSIN(R) 3
... Block MBS Start up kit. Includes configured ... choice of 2 MultiBlock satellite thermal ... blocks. User friendly software. Store/track ... height heated lid. Outstanding uniformity. ...
Glycerokinase; from Bacillus stearothermophilus...
A compact, high-speed single tube reader unit designed for benchtop 2D barcode reading. The unit can be used with all of ABgene's 2D barcoded tubes, including the 2ml CryoCode tube....
... Fluoroskan Ascent FL is ... and luminometric measurement technologies ... list of advanced features ... Luminoskan Ascent. Fluoroskan Ascent ...
Biology Products: