Demethylesterification of Cell Wall Pectins in Arabidopsis Plays a Role in Seed Germination1[W][OA]
نویسندگان
چکیده
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 Freiburg, Germany (K.W.); Institute of Biology 1, Rheinisch-Westfaelische Technische Hochschule Aachen, 52056 Aachen, Germany (A.W., B.U.); and Institute of Bioand Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425 Julich, Germany (B.U.)
منابع مشابه
Demethylesterification 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...
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Pectins are major components of plant primary cell walls. They include homogalacturonans (HGs), which are the most abundant pectin and can be the target of apoplastic enzymes like pectin methylesterases (PMEs) that control their methylesterification level. Several PMEs are expressed in the seed coat of Arabidopsis thaliana, particularly in mucilage secretory cells (MSCs). On the basis of public...
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