Navigation Links
Roses are red -- why some petunias are blue
Date:1/2/2014

Researchers have uncovered the secret recipe to making some petunias such a rare shade of blue. The findings may help to explain and manipulate the color of other ornamental flowers, not to mention the taste of fruits and wine, say researchers who report their findings in the Cell Press journal Cell Reports on January 2nd. From the flowers' point of view, the findings also have important implications, since blue petals instead of red might spell disaster when it comes to attracting pollinators.

The key discovery is a kind of cellular pump that was previously unknown in plants. When that pump fails to work properly, as it does in some petunias, the flower petals can't acidify special compartments within their cells. As a result, those petals turn blue instead of red or violet much like the litmus paper many of us will recall from chemistry class.

"Blue flower colors have been enigmatic for a long time and the blue rose appears in many myths, legends, and even operas," said Francesca Quattrocchio of the VU-University in Amsterdam. "Already in the 1910s it was proposed that blue flower colors were caused by reduced acidity of the 'cell sap.' Others figured that drastic changes in the cell sap might cause terrible deleterious defects, and proposed that blue flower colors had something to do with the formation of metal-anthocyanin complexes. Our current opinion is that both got it right."

Still, no one really knew how it worked. Scientists discovered one type of proton pump in the 1980s. "Over the decades, the idea took hold that all H+ transport across internal membranes is driven by those v-ATPases," Ronald Koes of VU-University in the Netherlands explained. Not so, the new work shows.

In most cells, there are but modest differences in pH between the insides and the outsides of intracellular compartments or vacuoles. Petals, by comparison, can show much steeper pH gradients. Scientists also knew that the differences in p
'/>"/>

Contact: Mary Beth O'Leary
moleary@cell.com
617-397-2802
Cell Press
Source:Eurekalert  

Page: 1 2

Related biology news :

1. The absence of elephants and rhinoceroses reduces biodiversity in tropical forests
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Roses are red -- why some petunias are blue
(Date:12/17/2014)... , Dec. 16, 2014 Valencell, a leader ... PerformTek biometric technology to industry leaders such as Intel, ... clinically validated, biometric wearable products. These products will be ... Las Vegas . ... accurate, flexible and robust – with the clinical data ...
(Date:12/17/2014)... DENVER , Dec. 16, 2014  Automation ... is this more evident than at international borders. ... secure document scanners have allowed veteran travelers to ... Automated Passport Control (APC) Kiosks at an increasing ... the globe. According to ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the ... APAC Region 2015-2019"  report to their offering. ... market is advances in technology. With continuous advances ... solutions to the latest standard that meets the ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... of Medicine have just developed an advanced imaging technique ... or white blood cells. Microdomains are restricted areas on ... signaling molecules accumulate during cell activation. Using digital multi-channel ... subsets and their forming microdomains in the vascular system ...
... single-walled carbon nanotubes (SWCNTs) shorter than about 200 nanometers ... pose an increased risk to health, according to scientists ... The results of their laboratory studies appear in an ... uses ranging from electronic displays to fuel cells to ...
... of Michigan analytical chemist Kristina Hakansson sets the stage ... growing body of evidence points to assemblies of sugars ... as accomplices in the growth and spread of tumors. ... traditional analytical methods have not been sufficient. , ...
Cached Biology News:New imaging technique tracks traffic patterns of white blood cells 2Cells selectively absorb short nanotubes 2A sweet step toward new cancer therapies 2
(Date:12/24/2014)... “Preparative & Process Chromatography Market by Instrument (Liquid ... Valves, Guages, Seals), Accessories, Services, End User (Biotechnology, ... provides a detailed overview of the major drivers, ... impacting the preparative and process chromatography market along ... and share analysis. , Full Copy of ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 ... series is designed to introduce cutting edge ... users and partners of platform upgrades. This ... benefits; empowering users in their quest to ... tools. , According to SoundConnect’s Marketing Manager, ...
(Date:12/24/2014)... Texas (PRWEB) December 23, 2014 ... methyl mercaptan such as its definition, classification, ... presents product specification, manufacturing process, and product ... technology and applications. The analysis also covers ... marketing channels, industry development trend and proposals. ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 Pipette.com announces ... their Twitter followers can submit their #HolidayInTheLab pictures for ... their lab mates. , For those struggling to think ... the Pipette.com Holiday in the Lab Contest provides the ... Twitter followers to send pictures of their chemistree, ...
Breaking Biology Technology:Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2
... Azur Pharma Limited ("Azur,Pharma") today announced that ... Niravam(R) (alprazolam orally disintegrating tablets), Parcopa(R),(carbidopa-levodopa orally ... Fluxid(TM) (famotidine orally,disintegrating tablets) from UCB (Euronext: ... Niravam, Parcopa and Kemstro ...
... The readers of The IN VIVO Blog , which ... device industries, have selected a Deal of the Year ... with Takeda Pharmaceuticals .More than 2,500 reader votes were cast ... start to finish among the 13 nominees selected by The ...
... (Nasdaq: MATK ) announced today that it will ... conference. The conference is being held January 14-15, 2009 ... Dana Point, California. Peter L. Buzy, Chief Financial Officer, ... 14, 2009 at 1:25 PM PT.A live audio webcast of ...
Cached Biology Technology:Azur Pharma Announces the Licensing of Niravam, Parcopa, Kemstro and Fluxid From UCB 2The IN VIVO Blog Selects First Annual 'Deal of the Year' 2
Rab1A...
Request Info...
Request Info...
Human acetylcholine receptor (AChR)-alpha. Exhibits homogenous, high affinity,binding to the receptor. Binds weakly to a64-78. Inhibits binding of many,myasthenia gravis sera to human AChR....
Biology Products: