Navigation Links
Nottingham scientists reveal genetic 'wiring' of seeds
Date:5/18/2011

The genetic 'wiring' that helps a seed to decide on the perfect time to germinate has been revealed by scientists for the first time.

Plant biologists at The University of Nottingham have also discovered that the same mechanism that controls germination is responsible for another important decision in the life cycle of plants when to start flowering.

Their discovery throws light on the genetic mechanisms that plants use to detect and respond to vital environmental cues and could be a significant step towards the development of new crop species that are resistant to climate change and would help secure future food supplies.

Seeds in the soil sense a whole range of environmental signals including temperature, light, moisture and nutrients, when deciding whether to germinate or to remain dormant.

To ensure that the decision for a seed to germinate is made at the perfect moment to ensure survival, evolution has genetically 'wired' seeds in a very complex way to avoid making potentially deadly mistakes.

The breakthrough has been made by scientists at Nottingham's Division of Crop and Plant Sciences who collaborate within one of the University's Research Priority Groups, Global Food Security. The team compiled publicly available gene expression data and used a systematic statistical analysis to untangle the complex web of genetic interactions in a model plant called Arabidopsis thaliana or thale cress. The plant is commonly used for studying plant biology as changes in the plant are easily observed and it was the first plant to have its entire genome sequenced.

The resulting gene network or SeedNet as it was dubbed highlighted what little scientists already know about the regulation of seed germination while being able to predict novel regulators of this process with remarkable accuracy.

The work was led by Dr George Bassel who joined The University of Nottingham on an NSERC PDF fellowship from the Canadian government to work with Professor Mike Holdsworth on research into seed germination. He has since been awarded a prestigious Marie Curie International Incoming Fellowship.

Dr Bassel said: "To our surprise, the seed network demonstrated that genetic factors controlling seed germination were the same as those controlling the other irreversible decision in the life cycle of plants: the decision to start flowering. The induction of flowering, like germination, is highly responsive to cues from the environment."

Another key finding from SeedNet was that the same genes that leaves and roots use to respond to stress are used by seeds to stop their germination. Given that seeds were evolved long after plants developed their ability to withstand environmental stress, this indicated that plants have adapted existed genes to fulfil a different role. The work could lead to identifying important factors controlling stress response in seeds and the plant itself, contributing towards the development of new crops producing increased yields under extreme environmental conditions such as drought or floods.


'/>"/>

Contact: Emma Thorne
emma.thorne@nottingham.ac.uk
44-115-951-5793
University of Nottingham
Source:Eurekalert

Related biology news :

1. Transportation fuels of the future: Nottingham leads the way
2. International prize for Nottingham spine research
3. Nottinghamshire Police First Law Enforcement Agency to Deploy ForensicSoft in United Kingdom
4. 2010 Julian Cole Lectureship awarded to John King, University of Nottingham
5. Microbiology brought to life in Nottingham
6. Nottingham success in green technologies awards
7. Nottingham researchers help bridge the urban and rural divide in the UK and India
8. Jefferson scientists deliver toxic genes to effectively kill pancreatic cancer cells
9. Scientists identify novel inhibitor of human microRNA
10. Argonne scientists peer into heart of compound that may detect chemical, biological weapons
11. MU scientists go green with gold, distribute environmentally friendly nanoparticles
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... KEY FINDINGS The global market for stem ... 25.76% during the forecast period of 2017-2025. The rise ... growth of the stem cell market. Download ... The global stem cell market is segmented on the ... cell market of the product is segmented into adult ...
(Date:3/30/2017)... -- On April 6-7, 2017, Sequencing.com will host the world,s ... at Microsoft,s headquarters in Redmond, Washington ... health and wellness apps that provide a unique, personalized ... is the first hackathon for personal genomics and the ... the genomics, tech and health industries are sending teams ...
(Date:3/29/2017)... CHICAGO , March 29, 2017  higi, the ... ecosystem in North America , today ... Partners and the acquisition of EveryMove. The new investment ... extensive set of tools to transform population health activities ... and lifestyle data. higi collects and secures ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... 10, 2017 International research firm Parks Associates announced ... at the TMA 2017 Annual Meeting , October 11 in ... residential home security market and how smart safety and security products impact ... Parks Associates: Smart Home ... "The residential security market has ...
(Date:10/9/2017)...  BioTech Holdings announced today identification and patenting ... stem cell therapy prevents limb loss in animal ... that treatment with ProCell resulted in more than ... to standard bone marrow stem cell administration.  Interestingly, ... of therapeutic effect.  ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... medical journal, Epilepsia, Brain Sentinel’s SPEAC® System which uses the surface electromyography ... generalized tonic-clonic seizures (GTCS) using surface electromyography (sEMG). The prospective multicenter phase ...
(Date:10/6/2017)... ... 2017 , ... The HealthTech Venture Network (HTVN) is proud ... annual Conference where founders, investors, innovative practitioners and collaborators are invited to a ... early stage digital health and med tech companies. , This day-long event will ...
Breaking Biology Technology: