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:10/29/2014)... German . ... Peter Schlögelhofer at the Max F. Perutz Laboratories (MFPL) ... of Vienna dived into the process of meiosis in ... an inversion of the standard meiotic phases. The researchers ... Nature Communications . , Meiosis is the two-step series ...
(Date:10/29/2014)... October 29, 2014 – Ghrelin is a hormone released ... intake. Alcohol is commonly viewed as a psychoactive substance ... a highly caloric food. , This knowledge, combined ... hypothesis that ghrelin has the potential to stimulate alcohol ... this in humans and found that, as they had ...
(Date:10/28/2014)... North America, Europe and China have published a paper ... Sciences that reveals important details about key transitions ... From strange and exotic algae, mosses, ferns, trees and ... and vegetables we eat and the ornamental plants adorning ... a billion years of history., "Our study generated DNA ...
Breaking Biology News(10 mins):Meiotic cell division 'the other way round' 2Ghrelin stimulates an appetite for drinking alcohol 2New study uses DNA sequences to look back in time at key events in plant evolution 2New study uses DNA sequences to look back in time at key events in plant evolution 3
... replacements, biomaterials have become big business. But scientists pursuing ... How will a biomaterial on the lab bench actually ... the new material or suffer an inflammatory response? And ... , To tackle such questions, researchers at the ...
... mechanisms is the neural machinery that triggers the hungry ... same machinery swings the other way after a hearty ... of the siesta. However, scientists have understood little about ... and other energy-related behaviors. , Now, in an article ...
... of the species known as social amoebas has been plotted ... clues to the evolution of life on earth. , Researchers, ... of York, and biochemist Professor Pauline Schaap, of the University ... 100 or so known species of social amoeba. , ...
Cached Biology News:Finding the right mix: A biomaterial blend library 2New mechanism explains glucose effect on wakefulness 2New mechanism explains glucose effect on wakefulness 3Scientists' cell discovery unearths evolutionary clues 2Scientists' cell discovery unearths evolutionary clues 3
(Date:10/30/2014)... October 30, 2014 Whitehouse Laboratories has ... ICH Stability Testing and Package Test Capacity. Responding to ... on a dramatic increase in environmental chamber storage space ... storage and aging samples to be securely held on ... major capital expenditure has already taken place with the ...
(Date:10/30/2014)... (PRWEB) October 30, 2014 Grace Century portfolio ... James A. Manganello, Chairman of the Board, to the ... The appointment was made by the Ministry of Health ... 24th, 2014. , More than a year after ... Bill , Prime Minister Perry Christie said the government has ...
(Date:10/30/2014)... A new report, commissioned by BioCrossroads and ... in-depth look at Indiana,s capital ... two different time frames: 1993 to 2002 and 2003 ... opportunities for investment growth.  The Life Science Innovation ... gains in innovation dollars as well as an increase ...
(Date:10/30/2014)... solution to one of the key challenges in the ... of Sussex physicists. , In a paper published today ... Garraway and colleagues show how to make a new ... Quantum technology devices, such as high-precision sensors and specialised ... of atoms. But the methods for trapping these tiny ...
Breaking Biology Technology:Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 2Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 3Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 3New report shows Indiana's gains in life sciences innovation capital outpace the nation 2New report shows Indiana's gains in life sciences innovation capital outpace the nation 3New report shows Indiana's gains in life sciences innovation capital outpace the nation 4New report shows Indiana's gains in life sciences innovation capital outpace the nation 5
... Bharat Renewable Energy Ltd (BREL) , a ... has initiated a program with SG Biofuels (SGB) ... for the production of biodiesel in India. ... to produce high performing hybrid varieties of Jatropha adapted ...
... at the University of Pittsburgh School of Dental Medicine ... which could lead to novel nanoscale approaches to developing ... the Proceedings of the National Academy of Sciences ... in the body and combines high hardness with resilience, ...
... NeoStem, Inc. (NYSE Amex: NBS ) ... a focus on cell based therapeutics development, today announced ... Research Program (PRMRP) of the Office of the Congressionally ... to be applied towards funding the Company,s VSEL™ Technology. ...
Cached Biology Technology:Bharat Renewable Energy Forms Alliance With SG Biofuels to Deploy Jatropha Hybrids for Biodiesel in India 2NeoStem Announces the Receipt of Over $1,700,000 in DOD Funding for its VSEL™ Technology Being Developed to Treat Osteoporosis 2NeoStem Announces the Receipt of Over $1,700,000 in DOD Funding for its VSEL™ Technology Being Developed to Treat Osteoporosis 3NeoStem Announces the Receipt of Over $1,700,000 in DOD Funding for its VSEL™ Technology Being Developed to Treat Osteoporosis 4
Mouse Wnt-9b Affinity Purified Polyclonal Ab Keywords: Wnt 9b Protein Family: Cancer Stem Cell Markers, Wnt Ligands...
One-step, microplate or cuvet, colorimetric, linear detection range 0.7 mg/dL to 35 mg/dL. Procedure: 5 min....
assays for phosphatase, lipase, nucleoside triphosphatases (ATPase, GTPase etc). HTS and follow up studies for phosphatase inhibitors. Quantitation of phosphate content in protein, lipids, and DNA....
...
Biology Products: