Featured Research

from universities, journals, and other organizations

Metabolic fingerprinting: Using proteomics to identify proteins in gymnosperm pollination drops

Date:
April 10, 2013
Source:
American Journal of Botany
Summary:
Proteomics is a powerful technique for examining the structure and function of the proteome. Proteomics can uncover the relationship between DNA, RNA, and the production of proteins -- enabling the comparison of the genome to the proteome. For organisms that have not yet been sequenced, proteomics facilitates the discovery and identification of proteins. A new study demonstrates the suitability of proteomics in determining the composition of gymnosperm pollination drops.

Proteins are vital parts of living organisms, performing a variety of essential functions such as DNA replication, catabolizing reactions, and responding to stimuli. The complete set of proteins expressed in an organism at a given time, under defined conditions, is known as the proteome. While the genome of an organism remains relatively stable, the proteome is remarkably dynamic, varying from cell to cell and even within a single cell and changing rapidly in response to developmental and environmental cues.

Proteomics is a powerful technique for examining the structure and function of the proteome. For some organisms, proteomics can uncover the relationship between DNA, RNA, and the production of proteins -- enabling the comparison of the genome to the proteome. For those organisms that have not yet been sequenced, proteomics facilitates the discovery and identification of proteins. In a new study published in the April issue of Applications in Plant Sciences, graduate student Natalie Prior and her colleagues demonstrate the suitability of proteomics in determining the composition of gymnosperm pollination drops.

"The biggest limitation in what we are doing is that there is no published gymnosperm genome," says Prior. "Most of the work on gymnosperms has been anatomical, histological, or morphological. The biochemical perspective is really lacking."

Mediating signaling between the pollen and the ovule, one role of the pollination drop is to provide a germination medium, which can be species specific. Additionally, in some species, anti-microbial proteins have been identified, suggesting that pollination drops provide protection in addition to acting as a landing spot for pollen grains.

"The proteins we are finding are really starting points for other research," says Prior. "We can identify these proteins, but there is a lot more research that can be done once we know what proteins are there."

Identification of the proteins found in pollination drops provides a metabolic fingerprint and thereby informs understanding of seed plant evolution. Comparing the proteomes of different species allows for identification of proteins, elucidating pollen-ovule interactions in gymnosperms.

"We are using proteomics to examine the biological relevance of the proteins that the pollen grain is exposed to in the drop," comments Prior. "It's fascinating to know if any of those proteins are consistent among groups of gymnosperms and what we can learn from that."


Story Source:

The above story is based on materials provided by American Journal of Botany. Note: Materials may be edited for content and length.


Journal Reference:

  1. Natalie Prior, Stefan A. Little, Cary Pirone, Julia E. Gill, Derek Smith, Jun Han, Darryl Hardie, Stephen J. B. O'Leary, Rebecca E. Wagner, Tyra Cross, Andrea Coulter, Christoph Borchers, Robert W. Olafson, Patrick von Aderkas. Application of Proteomics to the Study of Pollination Drops. Applications in Plant Sciences, 2013; 1 (4): 1300008 DOI: 10.3732/apps.1300008

Cite This Page:

American Journal of Botany. "Metabolic fingerprinting: Using proteomics to identify proteins in gymnosperm pollination drops." ScienceDaily. ScienceDaily, 10 April 2013. <www.sciencedaily.com/releases/2013/04/130410141545.htm>.
American Journal of Botany. (2013, April 10). Metabolic fingerprinting: Using proteomics to identify proteins in gymnosperm pollination drops. ScienceDaily. Retrieved September 18, 2014 from www.sciencedaily.com/releases/2013/04/130410141545.htm
American Journal of Botany. "Metabolic fingerprinting: Using proteomics to identify proteins in gymnosperm pollination drops." ScienceDaily. www.sciencedaily.com/releases/2013/04/130410141545.htm (accessed September 18, 2014).

Share This



More Plants & Animals News

Thursday, September 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Chimp Violence Study Renews Debate On Why They Kill

Chimp Violence Study Renews Debate On Why They Kill

Newsy (Sep. 17, 2014) The study weighs in on a debate over whether chimps are naturally violent or become that way due to human interference in the environment. Video provided by Newsy
Powered by NewsLook.com
Some Tobacco Farmers Thrive Amid Challenges

Some Tobacco Farmers Thrive Amid Challenges

AP (Sep. 16, 2014) The South's tobacco country is surviving, and even thriving in some cases, as demand overseas keeps growers in the fields of one of America's oldest cash crops. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

AFP (Sep. 16, 2014) Scientists say a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins