Navigation Links
To wilt or not to wilt
Date:5/14/2014

stomata wide open and have trouble readjusting to their new conditions. This results in dehydration hence the limp leaves and wilted flowers.

The early growth conditions notably relative humidity play an important role in this regard. Recent studies have shown that there is a wide genetic variation in the extent to which this phenomenon occurs. Some plants are just better at switching to dry conditions than others after a prolonged period with high humidity.

Habtamu Giday wondered what the underlying mechanism is that rules whether stomata open or close.

Rubber leaf imprints

To get a closer look at the how the stomata work under various humidity conditions, he used leaves from potted roses, a tube of silicon rubber and a dab of nail polish.

The rose plants were raised under controlled climatic conditions at high and medium relative humidity after which they were exposed to drought conditions. Habtamu Giday took leaf samples from these plants and squeezed a small portion of rubber silicone on the leaves to make a detailed imprint of the leaves and their stomata. He then painted the silicone rubber imprints with a fine layer of clear nail polish to achieve a thin, transparent layer that he could peel off and study under the microscope.

Using this method he could gain insight into which conditions stimulated the stomata to open and close. Habtamu Giday found that the roses grown under high humidity conditions had a higher level of abscisic acid and that the high level of this particular growth hormone persisted even when the plants were subjected to drought conditions.

- Stomatal responsiveness seems to be determined by the long-term level of abscisic acid which, in turn, is affected by the relative humidity during the early growth stages, says Habtamu Giday.

Improving stomatal responsiveness

The next question that came to mind was if it possible to take advantage of the
'/>"/>

Contact: Habtamu Giday Gebraegziabher
habtamu.giday@agrsci.dk
Aarhus University
Source:Eurekalert  

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
To wilt or not to wilt
(Date:12/17/2014)... Dec. 16, 2014 Valencell, a leader in ... biometric technology to industry leaders such as Intel, Jabra, ... validated, biometric wearable products. These products will be showcased ... Las Vegas . "Our ... flexible and robust – with the clinical data to ...
(Date:12/17/2014)... -- Automation is fundamentally transforming the travel experience and ... borders. Over the past decade, ePassports, biometric readers, ... to self process through border control via eGates ... increasing number of airports, seaports, and land borders ... Maxine Most , Principal at Acuity Market ...
(Date:12/11/2014)... DUBLIN , Dec. 09, 2014 Research ... http://photos.prnewswire.com/prnh/20130307/600769 ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) ... Market in the APAC Region 2015-2019"  report to ... emerging in this market is advances in technology. ... to upgrade biometric solutions to the latest standard ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... have developed a way to produce sharp fluid jets with ... living cell. The technique promises a way to deliver drugs ... be very valuable for research involving stem cells and other ... the APS journal Physical Review Letters . The ...
... - Greenhouse gas markets, where invisible gases are ... people. Farmers can make money on these markets, ... methane capture technologies in animal-based systems, no-till farming, ... extension educators, offset aggregators, and other stakeholders need ...
... release is available in German . , Spectroscopic ... can look inside materials. They exploit the interaction of light ... absorption spectroscopy, researchers from Helmholtz-Zentrum Berlin fr Materialien und Energie ... to solvent so-called electron transfer. They can even make ...
Cached Biology News:Greenhouse gas calculator connects farming practices with carbon credits 2Help from the dark side 2
(Date:12/19/2014)... (PRWEB) December 19, 2014 Charm Sciences ... test for the Detection of Aflatoxin M1 in raw ... receive independent third party validation. The peer reviewed report ... of the Institute for Agricultural and Fisheries Research (ILVO-T&V) ... , Aflatoxin B1, the most toxic aflatoxin and ...
(Date:12/19/2014)... , Dec. 19, 2014 Naurex Inc., ... novel drugs for diseases of the central nervous system, ... and chief executive officer, will present at the 33 ... presentation will take place at 3:00 p.m. PST on ... in San Francisco, Calif. ...
(Date:12/19/2014)... CITY, Calif. , Dec. 19, 2014 Bina ... , USA) announced today that they have been acquired ... 1,2 is a privately held company that provides ... of next generation sequencing (NGS) data for the academic ... the Roche Sequencing Unit, and will continue to focus ...
(Date:12/19/2014)... --Research and Markets ( http://www.researchandmarkets.com/research/fhh9rj/technology ) ... Innovations in Smart Fabrics (Technical Insights)" report ... http://photos.prnewswire.com/prnh/20130307/600769 The Research Service titled ... assessment on technological advancements and market for Smart ... 1. The Smart Fabrics market is expected to ...
Breaking Biology Technology:Charm Sciences Achieves Independent Validation of First 15 Minute Quantitative Screening Method for Aflatoxin M1 2Naurex to Present at 33rd Annual J.P. Morgan Healthcare Conference 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3Technology Innovations in Smart Fabrics (Technical Insights) 2
... decidedly hostile environment, the lowly tapeworm uses a chemical trick ... ,Capitalizing on that tapeworm chemistry, scientists at the University of ... the transit of drugs through the intestine, making them more ... only of more effective treatment, but also of lowering dosage ...
... Secure Solution For Mobile and Content Service Providers ... Network365 announced today a joint initiative to co-market ... additional revenue for mobile operators. The ADC/Network365 solution ... between operators, banks and service providers which then ...
... Copaescu, then a second-year MBA in the University of Wisconsin's ... Technology Business Plan Competition, she knew she wanted to enter. ... the money definitely got her attention. It was the sudden ... her deepest dreams. "Even as a child growing up in ...
Cached Biology Technology:Tapeworm's Chemical Trick Could Make Drugs More Effective 2ADC and Network365 Team to Offer New End-to-End Mobile Payment System 2Romanian Student Leverages Burrill Competition to Accomplish Her Dream 2Romanian Student Leverages Burrill Competition to Accomplish Her Dream 3
... Stabilizer has been developed specifically for ... proteins on microwell plates/strips. Coating ... of the antibody or protein antigen ... Product is filtered at 0.2 ...
Human peripheral blood CD56+ NK cells, For immunohistochemistry (IHC) Cell Chip with Human Peripheral Blood Monocytes, B Cells, NK Cells and Stem Cells...
... Novagen's HT96 Isothermal Block is an ... hold HT96 plates and to provide efficient ... plate. This new design of the HT96 ... offers an enhanced product design allowing for ...
Plasmacytoid dendritic cells, BDCA-4+, For immunohistochemistry (IHC) Cell Chip with Human Umbilical Cord Blood Dendritic Cells...
Biology Products: