Glycosyl residue composition of cell wall extracts from tillers of switchgrass WT and PvGAUT4-KD plants
Glycosyl residue composition of cell wall extracts from tillers of switchgrass WT and PvGAUT4-KD plants
Engineering topics
Publications and source records attributed to Pattathil, Sivakumar.
Glycosyl residue composition of cell wall extracts from tillers of switchgrass WT and PvGAUT4-KD plants
Glycosyl residue composition and total carbohydrate in cell wall extracts from WT and PvGAUT4-KD lines
Glycosyl residue composition of cell wall extracts from stems of P. deltoides WT, vector control and PdGAUT4-KD plants
Glycosyl residue composition and total carbohydrate of cell wall extracts from WT and PdGAUT4-KD lines
Sugar release and growth of biofuel crops are improved by downregulation of pectin biosynthesis
Nature Research reporting summary for manuscript
Phylogenetic tree of GAUT Protein Family and gene model, RNAi construct, and relative transcript abundance of GAUT4 in switchgrass, rice and poplar knockdown (KD) lines.
Glycosyl linkage analysis of fractionated cell walls from switchgrass WT and PvGAUT4-KD lines
Glycosyl linkage analysis of fractionated cell walls from P.deltoides WT and PdGAUT4-KD lines.
Cuticle - a hydrophobic barrier of cutin and waxes covering the outer cell wall surface of plants - enables survival in terrestrial habitats. However, it is not understood how the hydrophobic cuticle precursors travel through the homogalacturonan-rich hydrophilic cell wall. To elucidate the role of homogalacturonan in cuticle development, we disrupted its integrity by overexpressing a pectate lyase, PtxtPL1-27, in aspen. PtxtPL1-27 had pleiotropic effects on shoot development, including the reduction of cuticle thickness and changes in cutin and wax composition, but the expression of cutin biosynthetic genes was little affected. Despite a reduction in homogalacturonan content in the leaves, labeling with the homogalacturonan-specific antibody JIM5 in the outer epidermal cell wall layer increased and displayed an altered pattern. Moreover, the ultrastructure of cell walls was changed concomitant with lipid accumulation. We propose that the disruption of homogalacturonan integrity affected the cutinsome-dependent transport and polymerization of cutin monomers in the cell wall.