Navigation Links
Plants Respond to Changing Environment

A team of John Innes centre scientists lead by Professor Nick Harberd have discovered how plants evolved the ability to adapt to changes in climate and environment.

Plants adapt their growth, including key steps in their life cycle such as germination and flowering, to take advantage of environmental conditions. They can also repress growth when their environment is not favourable. This involves many complex signalling pathways which are integrated by the plant growth hormone gibberellin.

Publishing in the journal Current Biology, the researchers looked at how plants evolved this ability by looking at the genes involved in the gibberellin signalling pathway in a wide range of plants.

They discovered that it was not until the flowering plants evolved 300 million years ago that plants gained the ability to repress growth in response to environmental cues.

All land plants evolved from an aquatic ancestor, and it was after colonisation of the land that the gibberellin mechanism evolved. The earliest land plants to evolve were the bryophyte group, which includes liverworts, hornworts and ancestral mosses, many of which still exist today.

The ancestral mosses have their own copies of the genes, but the proteins they make do not interact with each other and cant repress growth. However, the moss proteins work the same as their more recently evolved counterparts when transferred into modern flowering plants.

The lycophyte group, which evolved 400 million years ago, were the first plants to evolve vascular tissues specialized tissues for transporting water and nutrients through the plant.

This group of plants also have the genes involved in the gibberellin signalling mechanism, and the products of their genes are able to interact with each other, and the hormone gibberellin.

However this still does not result in growth repression. Not until the evolution of the gymnos perms (flowering plants) 300 million years ago are these interacting proteins able to repress growth. This group of plants became the most dominant, and make up the majority of plant species we see today.

Evolution of this growth control mechanism appears to have happened in a series of steps, which this study is able to associate with major stages in the evolution of todays flowering plants. It also involves two types of evolutionary change.

As well as structural changes that allow the proteins to interact, flowering plants have also changed the range of genes that are turned on and off in response to these proteins. This work was supported by the Biotechnology and Biological Sciences Research Council.

Contacts Andy Chapple, Assistant Press Officer John Innes Centre Tel +44 (0)1603 251490 Mobile +44 (0)7785 766779 Email andrew.chapple@bbsrc.ac.uk


'"/>




Related medicine news :

1. Imported Plants Could Deadly Harbor Mosquitoes, Says Report
2. Jharkhand Govt Tie Up With Ramdev To Preserve Rare Herbal Plants
3. Plants have ability to significantly lower LDL cholesterol through sterol pills
4. 3-D Imaging For Monitoring Reactor Systems, Power Plants
5. Call To Protect Traditional Knowledge Of African Medicinal Plants
6. Yellow Oleander Plants Fuels Suicide Rates In Sri Lanka
7. ICMR To Develop Drugs From Medicinal Plants
8. Engineering Nutrient-Rich Plants Made For Feasible By New Findings
9. Plants Have the Ability to Recognize Kin
10. Acute Gastroenteritis Responds To Treatment With Either Gatorade Or Pedialyte
11. Monkeys Respond To HIV Treatment
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... , ... October 13, 2017 , ... The Visiting Nurse ... Market. Featuring a collection of specialty vendors and unique items from across the nation, ... quality-focused health and wellness services offered by the VNA. The boutique will be ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... Software Development, has been awarded a contract by the Center for Medicare and ... aims to accelerate the enterprise use of Agile methodologies in a consistent and ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the ... today its plans to open a flagship location in Covington, LA at 401 N. ... To Go store next to Office Depot in the Holiday Square shopping center. Its ...
(Date:10/12/2017)... ... October 12, 2017 , ... Information about ... intend to develop to enable prevention of a major side effect of chemotherapy ... especially in pediatric patients. For cisplatin, hearing loss is FDA listed on-label as ...
(Date:10/12/2017)... ... October 12, 2017 , ... Women-owned and Grand ... Best and Brightest in Wellness® by Best and Brightest. OnSite Wellness will be ... Oct. 20 from 7:30 a.m. to 2 p.m. at the Henry Autograph Collection ...
Breaking Medicine News(10 mins):
(Date:9/23/2017)... , Sept. 22, 2017 Janssen Biotech, Inc. ... response letter from the U.S. Food and Drug Administration ... of sirukumab for the treatment of moderately to severely ... additional clinical data are needed to further evaluate the ... severely active RA. ...
(Date:9/22/2017)... Sept. 22, 2017 AVACEN Medical (AVACEN) announced ... now successfully helping those with the widespread pain associated ... diagnosed Amanda in Essex, England ... my hair, experiencing no sleep at all, tremendous pain, ... I cannot recommend [the AVACEN 100] enough, how this ...
(Date:9/19/2017)... 19, 2017   ZirMed Inc ., a recognized leader ... that it has been ranked #1 by its users for ... Rankings 2017 User Survey. ZirMed was recognized as the top-ranked ... and medical centers over 200 beds and holds one of ... user survey history. ...
Breaking Medicine Technology: