Featured Research

from universities, journals, and other organizations

Plant growth without light control

Date:
May 16, 2012
Source:
Karlsruhe Institute of Technology
Summary:
Plants are dependent on the sun. Sunlight does not only supply them with energy, but also controls their development steps. So-called photoreceptors activate the processes of germination, leaf development, bud formation, and blossoming in the cells. The light-absorbing component of a photoreceptor may be replaced by a chemically similar synthetic substance. For the first time, the effects on complete plants have now been described.

The seedling on the right was fed with a synthetic photoreceptor and opens it cotyledons. In the dark control (left seedling), they remain closed.
Credit: T. Lamparter, KIT

Plants are dependent on the sun. Sunlight does not only supply them with energy, but also controls their development steps. So-called photoreceptors activate the processes of germination, leaf development, bud formation, and blossoming in the cells. The light-absorbing component of a photoreceptor may be replaced by a chemically similar synthetic substance.

For the first time, the effects on complete plants are now described in the The Plant Cell journal.

“The plants developed in the dark as if they were in light,” says the Director of the studies Tilman Lamparter, Karlsruhe Institute of Technology (KIT). The seeds and seedlings of thale cress were fed with a synthetic substance named “15Ea-phycocyanobilin". In the plant cell, this substance replaces the natural, photoactive component of the photoreceptor, the “phytochromobilin". Incorporation of 15Ea-PCB activates the photoreceptor and the plant is made believe it is exposed to light. In spite of the darkness, model plants germinate and grow similar to a control group exposed to light. “It was shown for the first time that synthetic substances can cause light effects in entire plants.”

Synthetic photoreceptors might be valuable tools for research, as they facilitate studies of many chemical plant processes compared to conventional genetic engineering methods. Apart from growth, photosynthesis can also be investigated much better. “Blossoming of flowers or development of the photosynthesis system may be controlled much better in the future,” predicts Lamparter. “These findings would be of high use for agricultural industry in the cultivation of flowers or biomass production, for instance.” In the future, it is planned to study related aspects in further detail.


Story Source:

The above story is based on materials provided by Karlsruhe Institute of Technology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Rui Yang, Kaori Nishiyama, Ayumi Kamiya, Yutaka Ukaji, Katsuhiko Inomata and Tilman Lampartera. Assembly of Synthetic Locked Phycocyanobilin Derivatives with Phytochrome in Vitro and in Vivo in Ceratodon purpureus and Arabidopsis. The Plant Cell, May 2012 DOI: 10.%u200B1105/%u200Btpc.%u200B111.%u200B094656

Cite This Page:

Karlsruhe Institute of Technology. "Plant growth without light control." ScienceDaily. ScienceDaily, 16 May 2012. <www.sciencedaily.com/releases/2012/05/120516093154.htm>.
Karlsruhe Institute of Technology. (2012, May 16). Plant growth without light control. ScienceDaily. Retrieved September 15, 2014 from www.sciencedaily.com/releases/2012/05/120516093154.htm
Karlsruhe Institute of Technology. "Plant growth without light control." ScienceDaily. www.sciencedaily.com/releases/2012/05/120516093154.htm (accessed September 15, 2014).

Share This



More Plants & Animals News

Monday, September 15, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Conservationists Face Uphill PR Battle With New Shark Rules

Conservationists Face Uphill PR Battle With New Shark Rules

Newsy (Sep. 14, 2014) — New conservation measures for shark fishing face an uphill PR battle in the fight to slow shark extinction. Video provided by Newsy
Powered by NewsLook.com
Shocker: Journalists Are Utterly Addicted To Coffee

Shocker: Journalists Are Utterly Addicted To Coffee

Newsy (Sep. 13, 2014) — A U.K. survey found that journalists consumed the most amount of coffee, but that's only the tip of the coffee-related statistics iceberg. Video provided by Newsy
Powered by NewsLook.com
'Magic Mushrooms' Could Help Smokers Quit

'Magic Mushrooms' Could Help Smokers Quit

Newsy (Sep. 11, 2014) — In a small study, researchers found that the majority of long-time smokers quit after taking psilocybin pills and undergoing therapy sessions. Video provided by Newsy
Powered by NewsLook.com
Spinosaurus Could Be First Semi-Aquatic Dinosaur

Spinosaurus Could Be First Semi-Aquatic Dinosaur

Newsy (Sep. 11, 2014) — New research has shown that the Spinosaurus, the largest carnivorous dinosaur, might have been just as well suited for life in the water as on land. Video provided by Newsy
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