Elicitation or peroxide stimulation of grape (Vitis vinifera L. cv Touriga) vine callus cultures results in the rapid and selective in situ insolubilization of an abundant and ionically bound cell wall protein-denominated GvP1. Surface-enhanced laser desorption/ionization/time of flight-mass spectrometry analysis, the amino acid composition, and the N-terminal sequence of purified GvP1 identifi...

Extensins are hydroxyproline-rich glycoproteins which are abundant in the cell walls of higher plants and whose precise function has been the subject of much speculation. In order to investigate this, transgenic A. thaliana plants were generated containing the Arabidopsis Atext1 extensin coding sequence under the transcriptional control of the strong constitutive CaMV 35S promoter. Northern ana...

Nearly two centuries of progress have established the major components of the plant cell wall, a composite that includes interpenetrating networks of cellulose (Payen, 1838; Schulze, 1891), microfibrils (Frey-Wyssling et al., 1948; Preston et al., 1948), pectin (Braconnot, 1825) and lignin (Payen, 1838). However, only over the last five decades has a relatively minor hydroxyproline-rich structu...

Plant dcfcncr rcsponscs to pathogcn clicitation, plant ccll growth and dcvclopmcnt arc complex and highly integrated pmcesses. Intcraction betwecn host plant and pathogcn result in significant differences in defence gcnc cxprcssion. A mynad 01 defence-related gcncs arc induccd in many caws of inumpati blc interaction betwccn host plant and pathogcn. Tcchniqucs that monitor individual rcsponscs ...

effects of excess concentrations of boron on major cell wall components of tobacco cells(nicotiana tabacum l. cv. burley 21) were studied. pectin, xyloglucan, hydroxyproline-richglycoproteins (extensin), and arabinogalactan proteins were characterized. results showedthat increased boron supply resulted in significant decrease in cell and cell wall dry weights.also, high concentrations of boron ...

1. This document is ENY-830 (formerly NFREC21), one of a series of the Department of Entomology and Nematology, Florida Cooperative Extensin Service, Institute of Food and Agricultural Sciences, University of Florida. Date first printed: unknown. Revised: June 2005. Reviewed: June 2008. Please visit the EDIS Website at http://edis.ifas.ufl.edu. 2. Richard Sprenkel, professor emeritus, Departmen...