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:6/20/2017)... ... 2017 , ... After months of negotiations, FaceCradle USA is proud to announce the debut of ... , “Introducing our product on QVC is something we all worked hard to achieve for ... more than 90 million homes in the United States,” said FaceCradle USA President Dylan Doherty. ...
(Date:6/20/2017)... ... 20, 2017 , ... Hayes, Inc., a leading provider of ... “ 5 Questions to Ask Before Entering the Maze of Genetic Testing .” ... (GTE) team, the book explores the various types of the more than 65,000 ...
(Date:6/20/2017)... , ... June 20, 2017 , ... Kenneth Mayer, MD, ... Society (JIAS). , Dr. Mayer, who joined the JIAS Editorial Board in 2016, ... founding Medical Research Director of Fenway Health and Co-Chair of The Fenway ...
(Date:6/20/2017)... ... June 20, 2017 , ... HOUSTON – Brazos Towers at Bayou ... host of new options for today’s modern senior. Brazos Towers at Bayou Manor has ... they love while offering them the services to support that lifestyle both now and ...
(Date:6/20/2017)... SAN DIEGO, California (PRWEB) , ... June 20, ... ... modern product documentation and help content solutions for the enterprise, is proud to ... web properties, including CRM, e-commerce, ticketing systems, company websites, and more to provide ...
Breaking Medicine News(10 mins):
(Date:6/14/2017)... Calif. , June 14, 2017 The ... the City of Fremont and ... of the bio-pharma industry in California ... technology, enabling executive networking, and fostering workforce development. The ... development and growth of start-ups, as well as small ...
(Date:6/12/2017)... , June 12, 2017 Kineta, Inc., a ... announced Kineta Vice President of R&D and Head ... the Pandemic Preparedness for the Northwest and Beyond ... held on June 14, 2017 from 8:30-10:30 AM PDT at ... Dr. Bedard will be joined by ...
(Date:6/9/2017)... AirXpanders, Inc. (ASX: AXP) (AirXpanders or Company), ... sale and distribution of the AeroForm® Tissue Expander System, ... commercial roll-out in the United States ... hundred (100) medical institutions and health systems, located throughout ... alternative for women who choose reconstructive surgery following a ...
Breaking Medicine Technology: