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:2/23/2017)... ... February 23, 2017 , ... Rare Disease Report®, which ... participating in Rare Disease Day events, hosted by the Rare Disease Legislative Advocates ... a website, weekly e-newsletter and quarterly publication, will be conducting interviews with patients ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... content provider for the National Institute for Health and Care Excellence ... organizations in the National Health Service (NHS) to search, order and purchase medical ...
(Date:2/23/2017)... ... 23, 2017 , ... Current Meditation , a new ... throughout the U.S. starting this spring. Current Meditation focuses on “meditation for the ... Current Meditation will be the first meditation concept in the U.S. offering franchising ...
(Date:2/23/2017)... ... February 23, 2017 , ... Top cosmetic and periodontal dentist ... today with a new Indiegogo campaign . Individuals are now able to contribute ... Los Angeles area, either as a participating patient or through an Indiegogo donation. The ...
(Date:2/22/2017)... (PRWEB) , ... February 22, 2017 , ... ... and lobby of a new healthcare contact center in Georgia, PENETRON Specialty Products ... of the nation’s largest healthcare systems recently invested $51 million to purchase and ...
Breaking Medicine News(10 mins):
(Date:2/23/2017)... 2017 On Wednesday, February 22, 2017, ... out of nine sectors finished the trading sessions in green, ... closing. Major US indices were also mixed at the close ... 5,860.63, slightly down by 0.09%; the Dow Jones Industrial Average ... 500 closed at 2,362.82, down 0.11%. This Thursday morning, Stock-Callers.com ...
(Date:2/23/2017)... 2017 ML Capital Group, Inc. (USOTC: MLCG) ... Highlife Tours , a Colorado -based cannabis ... Puration, Inc. (USOTC: PURA) to enter Colorado,s ... Colorado Highlife Tours acquisition announced today is intended to accelerate MLCG,s ... ...
(Date:2/23/2017)... Wash. and VANCOUVER, British Columbia ... (NASDAQ: OGXI ) today announced its year ... In January 2017, OncoGenex, and Achieve Life ... that they have entered into a definitive merger agreement ... transaction. Upon completion of the proposed merger, Achieve,s stockholders ...
Breaking Medicine Technology: