Featured Research

from universities, journals, and other organizations

Novel Explanation For A Floral Genetic Mystery

Date:
January 23, 2009
Source:
Public Library of Science
Summary:
Scientists have put forth a novel explanation of the evolutionary driving force behind a genetic switching circuit that regulates flower development and survival. The hypothesis is based around the obligatory pairing of certain molecules.

Scientists at the University of Jena, Germany have put forth a novel explanation of the evolutionary driving force behind a genetic switching circuit that regulates flower development and survival. The hypothesis is based around the obligatory pairing of certain molecules.

The authors believe that their findings "strongly support the view that the unexpected complexity of the floral homeotic gene switch considered here was not simply produced by random genetic drift but evolved because it provided the plant with a clear selective advantage"

In the Arabidopsis thaliana flower, a particular class of genes - DEF-like and GLO-like floral homeotic genes - regulates the development of petals and stamens over long periods of time, using "genetic switches". These genes are self-activating via a heterodimer (a complex of two different molecules) of their protein products, therefore binding the activity of each gene to that of the other one. The reason for their total functional interdependence has long remained unclear.

The authors used computational modeling to investigate potential explanations for why these two interdependent genes exist, since one gene alone could in principle provide the switching functionality in these plants' organs. The group shows that the obligate heterodimerization mechanism found in DEF- and GLO-like genes reduces the susceptibility of the genetic switch to failure caused by stochastic noise or interference.

The study was targeted at a specific mechanism of genetic regulation and cannot directly be transferred to other mechanisms, caution the authors. However, the underlying methodology may be applicable to a whole range of genetic regulatory motifs.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Lenser et al. Developmental Robustness by Obligate Interaction of Class B Floral Homeotic Genes and Proteins. PLoS Computational Biology, 2009; 5 (1): e1000264 DOI: 10.1371/journal.pcbi.1000264

Cite This Page:

Public Library of Science. "Novel Explanation For A Floral Genetic Mystery." ScienceDaily. ScienceDaily, 23 January 2009. <www.sciencedaily.com/releases/2009/01/090116073159.htm>.
Public Library of Science. (2009, January 23). Novel Explanation For A Floral Genetic Mystery. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2009/01/090116073159.htm
Public Library of Science. "Novel Explanation For A Floral Genetic Mystery." ScienceDaily. www.sciencedaily.com/releases/2009/01/090116073159.htm (accessed July 24, 2014).

Share This




More Plants & Animals News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Dogs Appear To Become Jealous Of Owners' Attention

Dogs Appear To Become Jealous Of Owners' Attention

Newsy (July 23, 2014) A U.C. San Diego researcher says jealousy isn't just a human trait, and dogs aren't the best at sharing the attention of humans with other dogs. Video provided by Newsy
Powered by NewsLook.com
Professor Creates Site Revealing Where People's Cats Live

Professor Creates Site Revealing Where People's Cats Live

Newsy (July 23, 2014) ​It's called I Know Where Your Cat Lives, and you can keep hitting the "Random Cat" button to find more real cats all over the world. Video provided by Newsy
Powered by NewsLook.com
Stone Fruit Listeria Scare Causes Sweeping Recall

Stone Fruit Listeria Scare Causes Sweeping Recall

Newsy (July 22, 2014) The Wawona Packing Company has issued a voluntary recall on the stone fruit it distributes due to a possible Listeria outbreak. Video provided by Newsy
Powered by NewsLook.com
Michigan Plant's Goal: Flower and Die

Michigan Plant's Goal: Flower and Die

AP (July 22, 2014) An 80-year-old agave plant, which is blooming for the first and only time at a University of Michigan conservatory, will die when it's done (July 22) Video provided by AP
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