Structures of the xyloglucans in the monocotyledon family Araceae (aroids)
Journal
Planta
Journal Volume
257
Journal Issue
2
Pages
39
Date Issued
2023-02
Author(s)
Hsiung, Shih-Yi
Li, Jing
Imre, Balazs
Kao, Mu-Rong
Liao, Hsien-Chun
Wang, Damao
Chen, Chih-Hui
Harris, Philip J
Hsieh, Yves S Y
Abstract
The xyloglucans of all aquatic Araceae species examined had unusual structures compared with those of other non-commelinid monocotyledon families previously examined. The aquatic Araceae species Lemna minor was earlier shown to have xyloglucans with a different structure from the fucogalactoxyloglucans of other non-commelinid monocotyledons. We investigated 26 Araceae species (including L. minor), from five of the seven subfamilies. All seven aquatic species examined had xyloglucans that were unusual in having one or two of three features: < 77% XXXG core motif [L. minor (Lemnoideae) and Orontium aquaticum (Orontioideae)]; no fucosylation [L. minor (Lemnoideae), Cryptocoryne aponogetonifolia, and Lagenandra ovata (Aroideae, Rheophytes clade)]; and > 14% oligosaccharide units with S or D side chains [Spirodela polyrhiza and Landoltia punctata (Lemnoideae) and Pistia stratiotes (Aroideae, Dracunculus clade)]. Orontioideae and Lemnoideae are the two most basal subfamilies, with all species being aquatic, and Aroideae is the most derived. Two terrestrial species [Dieffenbachia seguine and Spathicarpa hastifolia (Aroideae, Zantedeschia clade)] also had xyloglucans without fucose indicating this feature was not unique to aquatic species.
Subjects
Duckweeds; Fucosylation; Mass spectrometry; Plant cell walls; Xyloglucan oligosaccharides; Xyloglucanase
SDGs
Type
journal article