Pectins in the cell wall ofArabidopsis thalianapollen tube and pistil
نویسندگان
چکیده
منابع مشابه
Cell wall mechanics and growth control in plants: the role of pectins revisited
How is the extensibility of growing plant cell walls regulated? In the past, most studies have focused on the role of the cellulose/xyloglucan network and the enigmatic wall-loosening agents expansins. Here we review first how in the closest relatives of the land plants, the Charophycean algae, cell wall synthesis is coupled to cell wall extensibility by a chemical Ca(2+)-exchange mechanism bet...
متن کاملDemethylesterification of cell wall pectins in Arabidopsis plays a role in seed germination.
The methylesterification status of cell wall homogalacturonans, mediated through the action of pectin methylesterases (PMEs), influences the biophysical properties of plant cell walls such as elasticity and porosity, important parameters for cell elongation and water uptake. The completion of seed germination requires cell wall extensibility changes in both the radicle itself and in the micropy...
متن کاملFunctional genomics of pollen tube-pistil interactions in Arabidopsis.
The pollen tube represents an attractive model system for functional genomic analysis of the cell-cell interactions that mediate guided cellular growth. The pollen tube extends through pistil tissues and responds to guidance cues that direct the tube towards an ovule, where it releases sperm for fertilization. Pollen is readily isolated from anthers, where it is produced, and can be induced to ...
متن کاملDemethylesterification of Cell Wall Pectins in Arabidopsis Plays a Role in Seed Germination1[W][OA]
Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada (K.M., A.R.K.); Department of Botany, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada (G.L.-T., G.H.); Institute of Botany, University of Basel, 4056 Basel, Switzerland (S.B.); Institute for Biology II, Botany/Plant Physiology, Albert-Ludwigs-University, D–79104 Frei...
متن کاملArabidopsis Phyllotaxis Is Controlled by the Methyl-Esterification Status of Cell-Wall Pectins
Plant organs are produced from meristems in a characteristic pattern. This pattern, referred to as phyllotaxis, is thought to be generated by local gradients of an information molecule, auxin. Some studies propose a key role for the mechanical properties of the cell walls in the control of organ outgrowth. A major cell-wall component is the linear alpha-1-4-linked D-GalAp pectic polysaccharide ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plant Signaling & Behavior
سال: 2010
ISSN: 1559-2324
DOI: 10.4161/psb.5.10.13040