Navigation Links
Plants in the fourth dimension
Date:6/30/2008

onserved across taxa, but plants appear to have a novel mechanism. McClung and other scientists have shown that, in the model organism Arabidopsis, members of the PRR (pseudo-response regulator) gene family are integral parts of several oscillatory loops that may affect carbon fixation, stem elongation, biomass, flowering time, and survival. In particular, McClung and his co-workers showed that PRR7 and PRR9 are critical for responses to temperature, although they appear to function in other circadian cycles as well.

It is not accidental that the members of the PRR family are transcribed from DNA to RNA at different times of day, suggesting that the protein products function in processes that are coordinated with diurnal events. Thus, one of the mechanisms of clock gene regulation is the control of transcription and accumulation of RNA transcripts. Other forms of regulation are post-translationalafter the clock gene proteins have been made. These proteins are translocated to different compartments to perform their functions, have phosphate groups attached to them to change their activity, or are marked for degradationall precisely timed for optimal function.

With mutant analyses, McClung and his coworkers have shown that the PRR genes do not act in isolation, but rather are integrated and overlapping in function. Double and triple mutants have effects that are not simply additive but are much larger than those of single mutants. This suggests that it is adaptive for plants to have a group of genes, each with a small effect, but when functionally linked with other genes, part of a precise mechanism capable of subtle and specific responses, like the interlocking wheels of a clock.

McClung and his colleagues are studying how such mechanisms could have evolved. Through sequence analysis of PRR7 in over 100 different cultivars of Arabidopsis, they have shown that the nucleotides in the gene's DNA are replaced at a significant ra
'/>"/>

Contact: C. Robertson McClung
mcclung@dartmouth.edu
603-646-3940
American Society of Plant Biologists
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Mate choice in plants
2. Climate change could severely impact Californias unique native plants
3. Newly identified role for power plants in human cells could lead to targeted therapies
4. Reforestation using exotic plants can disturb the fertility of tropical soils
5. When plants think alike
6. Neural cell transplants may help those with Parkinsons disease
7. Ecologists tease out private lives of plants and their pollinators
8. Woody and aquatic plants pose greatest invasive threat to China
9. Boost for green plastics from plants
10. Nitric oxide regulates plants as well as people
11. NC State researchers identify genes key to hormone production in plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... RSV infection , Respiratory syncytial virus (RSV) ... infections, generating life-threating illness in very young and ... limited. RSV enters host cells through the fusion ... bundle. Small interfering peptides that prevent bundle formation ... are highly susceptible to degradation. In this issue ...
(Date:4/17/2014)... Professor Marc Andr Gauthier and Professor Luca Razzari ... each been awarded large grants from the John ... for Innovation (CFI) for the acquisition of state-of-the-art ... be added matching grants from the Ministre de ... et de la Technologie (MESRST). These new laboratories ...
(Date:4/17/2014)... cells in bone marrow need to produce hydrogen sulfide ... according to a new study from the Center for ... Dentistry of USC. , Professor Songtao Shi, principal investigator ... produced by the cells governs the flow of calcium ... signals that results in osteogenesis, or the creation of ...
Breaking Biology News(10 mins):JCI online ahead of print table of contents for April 17, 2014 2JCI online ahead of print table of contents for April 17, 2014 3JCI online ahead of print table of contents for April 17, 2014 4JCI online ahead of print table of contents for April 17, 2014 5JCI online ahead of print table of contents for April 17, 2014 6New state-of-the-art biotech and nanotech equipment for INRS 2
... is available in German . , Scientists of ... investigated another navigational skill of desert ants. These ants are ... sun compass along with a step counter and visible landmarks ... research team from Jena recently discovered that these ants also ...
... of Biological Sciences (AIBS) has selected Meredith Niles, a ... Richards, a graduate student at the University of Maryland, ... the University of Rhode Island, to receive the 2010 ... "AIBS is committed to fostering a productive dialogue between ...
... Americans recognize things need to change in the grocery ... is included in their food and on the packages. ... the right food choices to avoid obesity, but will readily ... new survey by FoodMinds. "In light of all the ...
Cached Biology News:Smelling the scenery in stereo 2AIBS names emerging public policy leaders 2AIBS names emerging public policy leaders 3Americans want Uncle Sam's help putting healthy foods on their dinner table 2
(Date:1/14/2014)... January 14, 2014 Date: Friday, April 11, ... Warrington Country Club, 1360 Almshouse Road, Warrington, Pa. ... organization solely dedicated to finding a cure for hepatitis B ... will host its annual Crystal Ball on Friday, April 11 ...
(Date:1/14/2014)... Jan. 14, 2014 As pet owners drew up their lists ... them wrote: "Take better care of my furry companion." Nowadays there ... and top-brand carrying cases to take the little canine or feline ... feel compelled to buy some pricey toys at the pet store. ...
(Date:1/14/2014)... Boston, MA (PRWEB) January 14, 2014 iLab ... Michelle Detwiler as the new Director of Product Strategy. In ... as well as iLab sub-teams to guide in the development ... that iLab provides the maximum possible benefit to the scientific ...
(Date:1/14/2014)... Ontario , Jan. 14, 2014   Kinaxis ®, provider ... SCM ) and sales and operations planning ( S&OP ) ... Biomanufacturing Summit , which will be held at the ... the conference, join Kinaxis customer Elisabeth Kaszas , Director ...
Breaking Biology Technology:Hepatitis B Foundation to Host Annual Crystal Ball Gala 2New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... Anne T. Ferguson, Ph.D., ... , INTRODUCTION , This application ... from Molecular Devices to study the performance of the LIVE/DEAD ... fluorescent dyes, calcein AM (cal AM) and ethidium homodimer (EthD-1), to ...
... , A Sensitive, Robust, Homogenous,and Rapid Assay , ... method , Assays a broad range of tyrosine kinases ... in a kit and in bulk packaging , , ... activity can be accelerated using High Efficiency Fluorescence Polarization ...
... David Handfield, Martin Boissonneault, Esther Tremblay, Benoit Houle and Luc Mnard. ... , Recent advances in ... in both the number of compounds and potential drug targets that ... assay systems has helped to meet the demand for increased throughput. ...
Cached Biology Technology:LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 2LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 3LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 4LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 5TKXtra DataFile: Homogenous tyrosine kinase detection using High Efficiency Fluorescence Polarization 2TKXtra DataFile: Homogenous tyrosine kinase detection using High Efficiency Fluorescence Polarization 3Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 2Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 3Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 4Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets. 5
Homo sapiens olfactomedin 1, transcript variant 3...
RABBIT ANTI QUINOLINIC ACID...
Coverslips for Microarrays, 1. *Category: MICROARRAY ACCESSORIES....
Agarase cleaves agarose to neoagaro-oligosaccharides, and is used for,quantitative, gentle recovery of DNA from low melting point agarose....
Biology Products: