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:11/18/2014)... YORK , Nov. 18, 2014   ... identity authentication solutions, and MorphoTrust USA ... and services, today announced a strategic partnership to ... enterprise, motor vehicle administration (MVA), airport screening and ... in identity-related solutions, MorphoTrust serves consumers through a ...
(Date:11/10/2014)... store shelves in early 2010, and people have used ... can be tossed into a washing machine without ever ... convenience, though, has come with risks for young children. ... Hospital found that from 2012 through 2013, U.S. poison ... 6 years of age swallowing, inhaling, or otherwise being ...
(Date:11/6/2014)... TALLAHASSEE, Fla. -- A groundbreaking paper from a team ... better understanding of how plants could adapt to and ... The research, published in the latest issue of the ... how chromatin (the complex of DNA and proteins) is ... material, so that some genes are turned on and ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Study finds laundry detergent pods, serious poisoning risk for children 2Maize analysis yields whole new world of genetic science 2
... largest oil spill on open water to date and other environmental ... the Gulf of Mexico, concludes a two-year scientific study released today. ... and the University of Central Florida in Orlando published their findings ... the past two years, scientists have been trying to figure out ...
... one of the world,s most recognizable groups of mushrooms, and ... fungal "family trees" ever created. As reported in ... Professor of Organismic and Evolutionary Biology Anne Pringle and Ben ... studied the genetics of more 100 species of Amanita mushrooms ...
... Suppliers of the orange, vanilla and other flavor and fragrance ... products are putting their faith in microbes as new sources ... oils used for centuries to delight the taste buds and ... edition of Chemical & Engineering News . C&EN is ...
Cached Biology News:Study points to causes of high dolphin deaths in Gulf of Mexico 2Friends with benefits 2
(Date:11/26/2014)... PHILADELPHIA , Nov. 26, 2014 ... environments. Human exploration of space requires astronauts to maintain ... safety and success, and prevent potential errors and accidents. ... little is known about how cognition is affected by ... affected. Now, Penn Medicine researchers are poised ...
(Date:11/26/2014)... The ETC (Emerging Technology Centers) http://www.etcbaltimore.com , ... that applications for AccelerateBaltimore™ (AB) 2015 program will ... a big idea?,” asked ETC’s President Deb Tillett. ... AccelerateBaltimore helps you and your big idea go ... Interested game changers with “big ideas” should ...
(Date:11/26/2014)... 2014 SonaCare Medical, a leading ... devices, recently participated in the American Urology Association’s ... .” Key opinion leaders in urology presented on ... small renal masses while attendees had the opportunity ... in hands-on labs. Attendees at the Los Angeles, ...
(Date:11/26/2014)... 2014 The Pittcon marketing department is ... and exposition mobile app, Pittcon 2015 ... the App Store for iOS and Android devices and ... before, during and after the event. It acts as ... companies, technical sessions, Conferee Networking sessions and short courses. ...
Breaking Biology Technology:Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 2Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 3Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 4AccelerateBaltimore Applications to Close in 6 Days 2AccelerateBaltimore Applications to Close in 6 Days 3SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 3Pittcon Releases 2015 Mobile App 2
... Chippewa Valley Technical College has teamed up with ... create the first Nanoscience Technology degree program in the ... one-billionth of a meter, wide, where normal physical properties ... behavior that physicists still do not fully understand. The ...
... Wisconsin Innovation Network is starting up a ... to boost the tech economy in northwest Wisconsin. , ... membership arm of the Wisconsin Technology Council , ... on technology policy. , ,Other chapters exist in Madison, ...
... seems to be a scorecard or measurement index for just ... of dying and everything in between. The problem with many ... view of whatever is being measured. But conclusions about the ... only those indicators that are easy to quantify. , ,As ...
Cached Biology Technology:Chippewa Valley Technical College helps pioneer nanotech program, incubator 2Chippewa Valley Technical College helps pioneer nanotech program, incubator 3Chippewa Valley Technical College helps pioneer nanotech program, incubator 4The future of work II: standard of working up, quality of work life down 2The future of work II: standard of working up, quality of work life down 3The future of work II: standard of working up, quality of work life down 4
... offers the same benefits as the VSO valve ... is critical or flow is required below 600 ... of gas in proportion to the input current., ... width modulation; closed loop feedback delivers optimal system ...
Hamster Serum; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels....
... Kit with CyScribe GFX Purification Kit, ... purification of Cy3- and Cy5-labeled cDNA.Optimized ... cDNA labeling and purification.Flexible and optimized ... labeling reactions with either Cy3- or ...
... 9001:2000 Certified USDA Research Registered OLAW Assured ... Training AALAS Certified Technicians Documentation ... Documentation Upon Request Focus CRP ... all your custom immunology service needs. ...
Biology Products: