Erratum to: Protoplasma

DOI 10.1007/s00709-008-0006-7

The antibody CCRC-M36 was found to bind de-esterified homogalacturonans (M. Hahn, personal communication), despite that the Arabidopsis mucilage used as the antigen is primarily de-branched RGI. Thus, the labeling pattern for this antibody reflects homogalacturon distribution, not RGI.