HOME >> BIOLOGY >> NEWS
Young plant's natural defenses amount to more than just its seed

For an infant plant, the world outside of its seed is not always a friendly place. Drought, wind, ice and other harsh conditions would threaten its well-being were it not for the shelter of its seed. Consequently, the decision to shed this weatherproof coat in order to begin to grow is perhaps the most critical a plant will ever make: once it stretches its fragile stem up toward the sky, there's no turning back to the safe haven of the seed.

Yet, growing up may not be quite as risky for a young plant as once was believed. According to Rockefeller University research, newborn plants have a second chance to hold off on growth after breaking through their seed coats. This developmental arrest, or checkpoint, offers protection against the possibility that a plant accidentally sprouts or "germinates" when conditions are poor, for example in times of drought.

"A cool summer rain might fool a winter plant into germinating too early, when there's not enough water in the soil," says Nam-Hai Chua, Ph.D., head of the Laboratory of Plant Molecular Biology at Rockefeller. "This growth arrest would give that plant the chance to salvage its mistake by essentially freezing growth for up to 30 days."

The findings may have applications in the food biotechnology industry, because they suggest new genetic strategies for creating drought-resistant crops.

New research from the Chua lab, reported in the Feb. 1 issue of Genes & Development, identifies a novel protein in the experimental plant Arabidopsis that helps terminate this developmental arrest, thereby indirectly reinitiating growth. Like a police officer restoring the flow of traffic by removing a barricade, this protein, called AFP, reestablishes growth by eliminating the primary protein, called ABI5, in charge of executing the arrest.

"Previously, we had determined that ABI5 is essential for this early growth arrest to occur," says Luis Lopez-Molina, Ph.D., first co-author of the paper an
'"/>

Contact: Whitney Clavin
clavinw@rockefeller.edu
212-327-7250
Rockefeller University
31-Jan-2003


Page: 1 2 3 4

Related biology news :

1. Second call for proposals for the European Young Investigator Award
2. Kiratisin wins 2004 Dade MicroScan Young Investigator Award
3. APS announces four 2004 Young Investigators awards
4. Young chimpanzees show sex differences in learning
5. Young scientists awarded for achievements in cancer research
6. A big surprise: Young nerve cells can rewind their developmental clocks
7. Young cancer researchers honored
8. Young sea animals clone themselvescentury-old debate halted
9. EMBO Young Investigators 2000 2002
10. UT Southwestern postdoctoral researcher wins international Young Scientist Prize
11. APS announces its 2002 Young Investigators Awards

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/24/2017)... Janice Kephart , former 9/11 ... Partners, LLP (IdSP) , today issues the following ... March 6, 2017 Executive Order: Protecting the ... be instilled with greater confidence, enabling the reactivation ... applications are suspended by until at least July ...
(Date:4/18/2017)... , April 18, 2017  Socionext Inc., a global expert ... a media edge server, the M820, which features the company,s hybrid ... software provided by Tera Probe, Inc., will be showcased during the ... the NAB show at the Las Vegas ... ...
(Date:4/13/2017)... 13, 2017 UBM,s Advanced Design and Manufacturing ... feature emerging and evolving technology through its 3D Printing ... run alongside the expo portion of the event and ... demonstrations focused on trending topics within 3D printing and ... manufacturing event will take place June 13-15, 2017 at the ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... 2017 , ... They call it the “hairy ball.” It’s ... of a system of linkages and connections so complex and dense that “it ... science at Worcester Polytechnic Institute (WPI) and director of the university’s bioinformatics and ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... Market with the addition of its newest module, US Hemostats & Sealants. , ... thrombin hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and biologic sealants used in ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... gene in its endogenous context, enabling overexpression experiments and avoiding the use of ... small RNA guides is transformative for performing systematic gain-of-function studies. , This ...
(Date:10/11/2017)... 2017  VMS BioMarketing, a leading provider of patient support ... Nurse Educator (CNE) network, which will launch this week. The ... health care professionals to enhance the patient care experience by ... other health care professionals to help women who have been ... ...
Breaking Biology Technology:
Cached News: