Navigation Links
Engineering blue-hued flowers
Date:6/27/2011

ST. AUGUSTINE, TRINIDAD AND TOBAGOFlower color in plants is determined by pigments such as aurones, anthocyanins, and carotenoids. Research has found that the ultimate color displayed is dependent not only on the pigment present, but also on other factors, including cell shape, presence of metal ions, and pH, among others. Information about the role of pH in creating color has allowed plant geneticists to engineer new hues, adding to the beauty and diversity of ornamental plants.

New experiments using Anthurium andraeanum, a tropical ornamental species with a limited range of spathe colors varying from orange to red, were designed to identify the most likely candidates for generating blues in the species. The study investigated the relationship between epidermal vacuolar pH and a number of factors including cultivar, spathe color, developmental stage of the spathe, location of anthocyanin within the spathe, differences between the abaxial and adaxial surfaces, and postharvest changes. The researchers noted that their long-term objective was to develop a methodology for engineering blue-colored spathes in anthurium.

"Most studies on pH have been carried out in floral tissues and limited information currently exists for leaf tissues with the exception of bracts of Poinsettia. This is the first study of pH in anthurium spathe, a modified leaf", said Pathmanathan Umaharan, corresponding author of the study. Umaharan and colleagues Omaira Avila-Rostant and Adrian M. Lennon from the Department of Life Sciences at The University of the West Indies conducted six experiments involving 23 cultivars of anthurium. The study was published in HortScience.

Spathe color was associated with vacuolar pH with the whites and greens having the highest pH followed by corals, pinks, reds, and oranges. In general, there was a correlation between the lightness of the pigmentation and the pH values, with the lighter colors having showing pH values. The values were within the pH range suitable for producing blue hues, as previously identified in three unique plant species.

The results also showed significant differences among cultivars within color categories, varying between1% to 8%, depending on the color group. "This data indicates the importance of screening a large number of cultivars within each color group to identify those with high pH for use in bioengineering of blue flowers", explained Umaharan.

The researchers said the study suggests that corals, which have the highest pH among the color groups, may be best suited as targets for transformation because they contain lower levels of pH-reducing anthocyanins.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Related biology news :

1. Genetic Engineering & Biotechnology News reports on growing role of molecular diagnostics
2. US Senate confirms Clemson University engineering Dean Esin Gulari to National Science Board
3. University success at national engineering awards
4. NJIT professor finds engineering technique to identify disease-causing genes
5. MIT: Mending broken hearts with tissue engineering
6. Stanley to Continue Biometrics In-Service Engineering Support for U.S. Army
7. Genetic Engineering & Biotechnology News reports on the trend toward predictive toxicogenomics
8. Engineering algae to make fuel instead of sugar
9. NTU undergrad is first Singapore champion of an internationally acclaimed engineering competition
10. Developer of advanced computing memory, father of biochemical engineering, and innovative engineering educators win highest engineering honors of 2009
11. Stevens receives $25,000 grant from the Engineering Information Foundation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2016)... Lithuania , Nov. 21, 2016   ... and object recognition technologies, today announced that the ... smart cards was submitted for the NIST ... successfully passed all the mandatory steps of the ... evaluation is a continuing test of fingerprint templates ...
(Date:11/15/2016)...  Synthetic Biologics, Inc. (NYSE MKT: SYN), a ... gut microbiome, today announced the pricing of an ... common stock and warrants to purchase 50,000,000 shares ... the public of $1.00 per share and accompanying ... offering, excluding the proceeds, if any from the ...
(Date:6/22/2016)... BETHESDA, Md. , June 22, 2016  The American ... by Trade Show Executive Magazine as one of ... Summit on May 25-27 at the Bellagio in ... based on the highest percentage of growth in each of ... number of exhibiting companies and number of attendees. The 2015 ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... and ANN ARBOR, Mich. , ... biopharmaceutical company developing breakthrough immune modulatory medicines, announced today ... the Company,s lead therapeutic candidate, LYC-30937- E nteric ... a debilitating skin disease that is estimated to affect ... United States , with approximately 1.5 - 3 ...
(Date:12/7/2016)... (PRWEB) , ... December 07, 2016 , ... ... treatment and resource recovery solutions for industrial facilities, today announced that one of ... the first to use Cambrian’s novel water-energy purchase agreement (WEPA). Under the WEPA, ...
(Date:12/7/2016)... ... 2016 , ... JULABO USA is inviting visitors to explore ... has been designed to provide the best user-friendly experience coupled with intuitive navigation ... information, read educational industry content as well as share information across all major ...
(Date:12/7/2016)... ... 2016 , ... Kara Dwyer Dodge grew up hearing stories of the sea monster her father ... found a sea turtle entangled in the lines of one of his lobster pots. He ... because no one could remember ever seeing one so large so close to shore. After ...
Breaking Biology Technology: