Navigation Links
Moss helps chart the conquest of land by plants
Date:2/4/2010

Recent work at Washington University in St. Louis sheds light on one of the most important events in earth-history, the conquest of land by plants 480 million years ago.

No would-be colonizer could have survived on dry land without the ability to deal with dehydration, a major threat for organisms accustomed to soaking in water.

Clues to how the first land plants managed to avoid drying out might be provided by bryophytes, a group that includes the mosses, many of which retain remarkable drought tolerance. Some mosses can become so dry they crumble in the hand, but, if remoistened, will begin making proteins within minutes.

The work, published in the Jan. 29 issue of the journal Science, reveals several components of the signaling pathway that underlies the moss's Lazarus-like behavior.

Intriguingly, the flowering plants haven't entirely lost the ability to tolerate dessication: this tolerance has just been limited to their seeds, which dry out over winter and yet come to life in the spring.

The seed strategy

"We began by asking whether the moss Physcomitrella patens, which we have been using as a model system, employs different molecules or different regulatory systems than seeds. Or does the same mechanism underlie its desiccation tolerance and that of seeds?" says Ralph Quatrano, Ph.D., the Spencer T. Olin Professor of biology at WUSTL and senior author on the paper.

Earlier, Quatrano and others had showed that seeds depended on both the plant hormone ABA and the regulatory molecule ABI3 to survive drying.

Plant hormones, much like human hormones, are chemicals produced in small amounts that have a profound effect on growth and development. The release of one plant hormone, for example, causes bolting, the sudden growth of a floral stalk that signals the end of a leaf lettuce's tasty days.

ABI3 is a transcription factor, a molecule that binds to a specific DN
'/>"/>

Contact: Diana Lutz
dlutz@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Humble garden pea helps Kew scientists develop cool, noninvasive diagnostic test of seed quality
2. ARS genetic analysis helps spot sugarcane rusts
3. New system helps explain salmon migration
4. Mobilizing the repair squad: Critical protein helps mend damaged DNA
5. Study shows a key protein helps control blood pressure
6. U-Iowa study helps advance heart-related research
7. Genetic analysis helps dissect molecular basis of cardiovascular disease
8. New evidence that dark chocolate helps ease emotional stress
9. Bacterium helps formation of gold
10. Kent State University Professor C. Owen Lovejoy helps unveil oldest hominid skeleton
11. MSU scientist helps map potato genome, hope to improve crop yield
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Moss helps chart the conquest of land by plants
(Date:3/31/2015)... NEW YORK , March 31, 2015  Elephant ... the "Company"), a global provider of Software Defined Network ... solutions, today announced total revenue of approximately $20.4 million ... to a restated $19.5 million for the year ended ... of calendar 2014, the Company had completed its multi-year ...
(Date:3/24/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/hdgz7h/global_iris ) has ... Market 2015-2019" report to their offering. ... grow at a CAGR of 23.5 percent over the ... scenario and the growth prospects of the Global Iris ... market size, the report considers the revenue generated from ...
(Date:3/23/2015)... March 23, 2015 SoundView Technology Group issues a ... NXTD ) Wocket smart wallet. SoundView was one of the ... their experience with the Wocket in multiple scenarios and outlets. ... Foods and other retailers, making both debit and credit card ... also says, "If the company meets their plans in 2015, ...
Breaking Biology News(10 mins):Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4
... Texas heat often keeps Houstonians from heading to the ... dissuaded from outdoor activities due to poor air quality. ... track ozone levels through the Houston Clean Air Network. ... this website ( http://houstoncleanairnetwork.org ) provides real-time air quality ...
... collaboration with European research institutes ICFO (Barcelona) and ... behaves in complex photonic materials inspired by nature, ... limit of light resolution at the nanoscale and ... matter interact, which could lead to the development ...
... PA, August 20, 2012 The more that we ... same can be said about the genetics and neurobiology ... mutation of a single gene predictably produces a single ... Mendelian disorders, understanding bipolar disorder has been extremely challenging. ...
Cached Biology News:Houston Clean Air Network offering real-time online ozone report 2Scientists shed light on glowing materials 2Scientists shed light on glowing materials 3Making sense out of the biological matrix of bipolar disorder 2
(Date:5/4/2015)... ROCKVILLE, Md. , May 4, 2015 /PRNewswire/ ... "RegeneRx") today announced that an independent team of ... have reported that Thymosin B4 (TB4) plays an ... dermal burn wounds, induced in an experimental mouse ... rapid vascular remodeling of damaged dermal tissue.  The ...
(Date:5/4/2015)... , May 4, 2015  Soligenix, Inc. (OTCQB: ... developing products that address unmet medical needs in the ... it will be presenting preclinical data from three of ... Defense Science and Technology Conference on May 12-14, 2015 ... at 701 Convention Plaza, St. Louis MO ...
(Date:5/4/2015)... May 4, 2015   Tocagen Inc. , ... data from Tocagen,s ongoing investigational studies were presented ... the American Association of Neurological Surgeons (AANS)/Congress of ... 1-2, 2015, in Washington, D.C. ... a meeting with FDA and continues to advance ...
(Date:5/4/2015)... Marianjoy Rehabilitation Hospital ... and hand impairments by acquiring the Armeo®Spring arm ... network site. , Secured through grant support of ... treatment option for patients with upper extremity weakness ... one of just four Illinois providers offering treatment ...
Breaking Biology Technology:Researchers Report that Thymosin B4 has a Major Role in Dermal Burn Wound Healing 2Researchers Report that Thymosin B4 has a Major Role in Dermal Burn Wound Healing 3Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 2Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 3Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 4Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 5Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 6Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 7Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 8Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 9Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 10Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 11Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 12Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 2Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 3Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 4Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 5Marianjoy Acquires Armeo®Spring Arm and Hand Rehabilitation Exoskeleton at Oakbrook Terrace Facility 2
... field of polymer science and engineering contribute significantly ... and processing advantages, which are unattainable in any ... polymer science and engineering will be critical to ... clean water, food preservation, healthcare, informatics, defense and ...
... integrated heaters are widely used to characterize polymer films ... These heated tips are also used in research labs ... and to study fundamentals of nanometer-scale heat flow. Until ... for electronic measurements. "We have developed a new ...
... NEW YORK and CAMBRIDGE, Mass., Dec. 19, 2011 ... Access BridgeGap Ventures, a new life sciences venture ... therapeutics space.  Leveraging its team,s experience in startup creation, ... fund early-stage startups and also create de-novo spinoffs ...
Cached Biology Technology:Research and education success earns more NSF funding 2Research and education success earns more NSF funding 3Access BridgeGap Ventures to Focus on Early-Stage Therapeutic Opportunities 2Access BridgeGap Ventures to Focus on Early-Stage Therapeutic Opportunities 3