Cell Wall Lignin is Polymerised by Class Ⅲ Secretable Plant Peroxidases in Norway Spruce

作     者：Kurt V.Fagerstedt Eija M.Kukkola Ville V.T.Koistinen Junko Takahashi Kaisa Marjamaa 

作者机构：Department of Biological and Environmental SciencesPlant BiologyP.O. Box 65 FI-00014 Helsinki UniversityFinland Technical Research Center of Finland (VTT)PL 100002044 VTTFinland 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2010年第52卷第2期

页      面：186-194页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by the Finnish Centre of Excellence in Plant Signal Research granted by the Academy of Finland(grant number 213509) 

主　　题：Secretable Plant Peroxidases in Norway Spruce 

摘      要：Class Ⅲ secretable plant peroxidases occur as a large family of genes in plants with many functions and probable redundancy. In this review we are concentrating on the evidence we have on the catalysis of lignin polymerization by class Ⅲ plant peroxidases present in the apoplastic space in the xylem of trees. Some evidence exists on the specificity of peroxidase isozymes in lignin polymerization through substrate specificity studies, from antisense mutants in tobacco and poplar and from tissue and cell culture lines of Norway spruce （Picea abies） and Zinnia elegans. In addition, real time （RT-）PCR results have pointed out that many peroxidases have tissue specific expression patterns in Norway spruce. Through combining information on catalytic properties of the enzymes, on the expression patterns of the corresponding genes, and on the presence of monolignols and hydrogen peroxide in the apoplastic space, we can show that specific peroxidases catalyze lignin polymerization in the apoplastic space of Norway spruce xylem.