Navigation Links
Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants

UC Riverside researchers from the Departments of Chemical and Environmental Engineering, Mechanical Engineering and Botany and Plant Sciences have worked together to discover a way to utilize Quantum Dot bio-conjugates to uncover new knowledge about the binding of a protein at the growing pollen tube tip. This protein plays a critical role along with another protein (chemocyanin) in guiding sperm-laden pollen tubes to the eggs found in ovules.

Applying nanoparticles for imaging the protein localization revealed information that could not be observed previously by conventional imaging techniques. This study provides a new tool to botanical scientists by merging areas of materials science, chemistry and plant biology. The findings are the result of an interdisciplinary research team including Sathyajith Ravindran of the Chemical and Environmental Engineering Department; Sunran Kim, Rebecca Martin and Elizabeth M. Lord of the Botany and Plant Sciences Department; and Cengiz S. Ozkan of the Mechanical Engineering Department at UC-Riverside. The results of their collaborative research appeared in an article titled “Quantum Dots as Bio-labels for the Localization of a Small Plant Adhesion Protein?and published in the January 2005 issue of Nanotechnology, and is a featured article at http://nanotechweb.org. Journal Nanotechnology has an international readership among academic, government and corporate sectors, and is dedicated to coverage of all aspects of nanoscale science and technology from a multidisciplinary perspective. Ozkan and his colleagues utilized cadmium selenide (CdSe) quantum dots coated with zinc sulphide as fluorescent probes. The particles had a diameter of 6.3 nm. The team terminated the quantum dots with carboxylic groups by reacting them with mercaptoacetic acid. Then they conjugated the quantum dots with the amine groups of stigma/stylar cysteine-rich adhesin (SCA) - a plant polle n tube adhesion protein. This labeled the protein molecules with fluorescent tags. Quantum dots are much more resistant to photobleaching than conventional fluorescent markers and their small size make them ideal for biological imaging. The researchers then added the molecules to germinated lily pollen grains and examined them under a confocal microscope. This is the very first time that Quantum Dots have been utilized for live imaging in plant systems. The study opens the door for the potential use of Quantum Dots in live imaging of plant cells and provides valuable understanding of the mechanism of interaction between the pollen tube and female tissue during reproduction. “Integrating materials science, chemistry and plant biology to understand how and where specific proteins act on a pollen tube is one more step towards a better understanding of the fundamental processes involved, namely the network of the signaling process in plant reproduction,?said Ozkan. "A better understanding of the interaction of SCA with pollen tubes could help with successful plant breeding?
'"/>

Source:UCR News

Related : QuantumDot


Related biology news :

1. Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections
2. Connect the Quantum Dots
3. Quantum dots reviewed -- Could these nanoparticles hold the cure to cancer?
4. First Quantum Grant to fund stem cell repair of damage from stroke
5. Researchers discover way to make cells in the eye sensitive to light
6. Researchers find how protein allows insects to detect and respond to pheromones
7. Researchers Uncover Key Step In Manufacture of Memory Protein
8. Research advances quest for HIV-1 vaccine
9. Research on Worms Yields Clues on Aging
10. Researchers reveal the infectious impact of salmon farms on wild salmon
11. Researchers identify target for cancer drugs

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/9/2016)... , UAE, May 9, 2016 ... it comes to expanding freedom for high net worth ... Even in today,s globally connected world, there is still ... system could ever duplicate sealing your deal with a ... second passports by taking advantage of citizenship via investment ...
(Date:4/28/2016)... 28, 2016 First quarter 2016:   ... compared with the first quarter of 2015 The gross ... M (loss: 18.8) and the operating margin was 40% (-13) ... Cash flow from operations was SEK 249.9 M (21.2) , ... is unchanged, SEK 7,000-8,500 M. The operating margin for ...
(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... Chapel Hill, N.C. (PRWEB) , ... June 27, ... ... of U.S. commercial operations for Amgen, will join the faculty of the ... will serve as adjunct professor of strategy and entrepreneurship at UNC Kenan-Flagler, with ...
(Date:6/24/2016)... , June 24, 2016 Epic ... sensitively detects cancers susceptible to PARP inhibitors by ... tumor cells (CTCs). The new test has already ... therapeutics in multiple cancer types. Over ... DNA damage response pathways, including PARP, ATM, ATR, ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... announce the launch of their brand, UP4™ Probiotics, into Target stores nationwide. The ... is proud to add Target to its list of well-respected retailers. This list ...
(Date:6/23/2016)... June 23, 2016 Houston Methodist Willowbrook ... Cy-Fair Sports Association to serve as their official ... Houston Methodist Willowbrook will provide sponsorship support, athletic ... with association coaches, volunteers, athletes and families. ... Cy-Fair Sports Association and to bring Houston Methodist ...
Breaking Biology Technology: