title: Rapid deposition of wheat cell wall structural proteins in response to Fusarium-derived elicitors.
abstract: Two novel cell wall structural proteins of spring wheat (Triticum aestivum L. em Thell.). undergo rapid deposition in the cell wall matrix in a H(2)O(2)-dependent reaction after the elicitation of cultures with Fusarium graminearum (L.)-derived elicitor. The amino acid compositions of these proteins were remarkably similar and indicated that they were highly acidic (pI 3.8). These proteins contained 13--17% each of Gly, Glx and Ser with lesser amounts (6--8%) of Ala, Asx and Thr, and it has been suggested that they are known as glycine- and serine-rich proteins (GSRPs). SELDI-MS ionization spectra demonstrated that these proteins have low molecular masses of 8590 and 4292 Da. These results are discussed in relation to the possible role of these novel proteins in rapid, cell wall defensive reactions to pathogenic attack.
authors.affiliation: University of Westminster, School of Biosciences, 115 New Cavendish St., London W1M 8JS, UK.
authors.forename: W
authors.initials: W
authors.lastname: El-Gendy
authors.forename: M D
authors.initials: MD
authors.lastname: Brownleader
authors.forename: H
authors.initials: H
authors.lastname: Ismail
authors.forename: P J
authors.initials: PJ
authors.lastname: Clarke
authors.forename: J
authors.initials: J
authors.lastname: Gilbert
authors.forename: F
authors.initials: F
authors.lastname: El-Bordiny
authors.forename: M
authors.initials: M
authors.lastname: Trevan
authors.forename: J
authors.initials: J
authors.lastname: Hopkins
authors.forename: M
authors.initials: M
authors.lastname: Naldrett
authors.forename: P
authors.initials: P
authors.lastname: Jackson
mesh_terms: D000596:Amino Acids / Q000032:analysis; D002473:Cell Wall / Q000378:metabolism; D002478:Cells, Cultured; D005670:Fusarium / Q000254:growth & development*; D006023:Glycoproteins / Q000378:metabolism*; D006639:Histidine / Q000378:metabolism; D008565:Membrane Proteins / Q000378:metabolism; D009195:Peroxidase / Q000378:metabolism; D010940:Plant Proteins; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013912:Threonine / Q000378:metabolism; D014908:Triticum / Q000378:metabolism* / Q000382:microbiology
chemical_list: D000596:Amino Acids; D006023:Glycoproteins; D008565:Membrane Proteins; D010940:Plant Proteins; C005488:extensin protein, plant; D013912:Threonine; D006639:Histidine; D009195:Peroxidase