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


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:

(Date:11/27/2015)... (PRWEB) , ... November 27, 2015 , ... ... failing. Secura Consultants has prided itself for not only fulfilling the needs of ... protection solutions at an affordable price and providing top-tier customer service. However, there's ...
(Date:11/27/2015)... Rosa, CA (PRWEB) , ... November 27, 2015 , ... ... Northern California Medical Associates, Inc. and Dr. Tucker Bierbaum with Emergency Medicine at ... meeting. They observed that both STEMI and Sepsis conditions present in similar ways and ...
(Date:11/26/2015)... , ... November 26, 2015 , ... Inevitably when people ... customers choose to buy during the Black Friday and Cyber Monday massage ... need to search the Internet high and low to find the best massage chair ...
(Date:11/26/2015)... ... November 26, 2015 , ... Jobs in hospital medical laboratories and in the ... healthcare staffing agency Aureus Medical Group . These fields, as well ... those searching for healthcare jobs through the company’s website, , The ...
(Date:11/26/2015)... ... November 26, 2015 , ... ... and wellness consultation, has collaborated with Women’s Web – an online resource ... on topics on mental and emotional well-being relationship, life balance, stress, professional ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... 26, 2015 ... ser potential att använda SyMRI för att ... för patienter med multipel skleros (MS) eller ... SyntheticMR AB för att kunna använda SyMRI ... Med SyMRI kan man generera flera konstrastbilder ...
(Date:11/26/2015)... November 26, 2015 ... adds "Global Repaglinide Industry ... Report on China Repaglinide Market, 2010-2019" ... data and information to its online ... . --> ...
(Date:11/26/2015)... 2015 ) ... "Radioimmunoassay Market by Type (Reagents & Kits, ... Clinical Diagnostic Labs), Application (Research, Clinical Diagnostics), ... report to their offering. --> ... of the "Radioimmunoassay Market by Type ...
Breaking Medicine Technology: