Follow, research and publish the best content
Get Started for FREE
Sign up with Facebook Sign up with X
I don't have a Facebook or a X account
Already have an account: Login
Plant and Seed Biology
39.1K views |
+3 today
 Your new post is loading...
Your new post is loading...
Scoop.it!
PLOS Computational Biology is an open-access 
Scoop.it!
Scoop.it!
Plant cells are immobile; thus, plant growth and development depend on cell expansion rather than cell migration. The molecular mechanism by which the plasma membrane initiates changes in the cell expansion rate remains elusive. We found that a secreted peptide, RALF (rapid alkalinization factor), suppresses cell elongation of the primary root by activating the cell surface receptor FERONIA in Arabidopsis thaliana. A direct peptide-receptor interaction is supported by specific binding of RALF to FERONIA and reduced binding and insensitivity to RALF-induced growth inhibition in feronia mutants. Phosphoproteome measurements demonstrate that the RALF-FERONIA interaction causes phosphorylation of plasma membrane H+–adenosine triphosphatase 2 at Ser899, mediating the inhibition of proton transport. The results reveal a molecular mechanism for RALF-induced extracellular alkalinization and a signaling pathway that regulates cell expansion.
Scoop.it!
Domestication syndrome’ (DS) denotes differences between domesticated plants and their wild progenitors. Crop plants are dynamic entities; hence, not all parameters distinguishing wild progenitors from cultigens resulted from domestication. In this opinion article, we refine the DS concept using agronomic, genetic, and archaeobotanical considerations by distinguishing crucial domestication traits from traits that probably evolved post-domestication in Near Eastern grain crops. We propose that only traits showing a clear domesticated–wild dimorphism represent the pristine domestication episode, whereas traits showing a phenotypic continuum between wild and domesticated gene pools mostly reflect post-domestication diversification. We propose that our approach may apply to other crop types and examine its implications for discussing the timeframe of plant domestication and for modern plant science and breeding.
Via Christophe Jacquet
Christophe Jacquet's curator insight,
January 6, 2014 8:39 AM
Highlights• We introduce the concept of crucial ‘domestication syndrome’ (DS) traits. • Crucial DS traits are part of the features distinguishing crops from wild forms. • The crucial DS concept improves understanding of prehistoric domestication episodes. • Using the crucial DS concept may enhance future crop improvement capacity. |
Scoop.it!
"Here, we identified an eight-core-component protein complex, the TPLATE complex, essential for plant growth via its role as major adaptor module for clathrin-mediated endocytosis. This complex consists of evolutionarily unique proteins that associate closely with core endocytic elements. "
Here's a nice press release from VIB about this work http://www.vib.be/en/news/Pages/Plants-recycle-too.aspx Via Mary Williams
Scoop.it!
Il deviendra possible d'imprimer des objets en 3D sans utiliser de plastique : le Seaweed Filament.
|
