NDP-Sugar Pathways Overview of Spirodela polyrhiza and Their Relevance for Bioenergy and Biorefinery

Autor(es)

Pagliuso, Debora ^[1] ; Navarro, Bruno Viana ^[1] ; Grandis, Adriana ^[1] ; Zerillo, Marcelo M. ^[2] ; Lam, Eric ^[3] ; Buckeridge, Marcos Silveira ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biosci, Dept Bot, Lab Plant Physiol Ecol, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Biosci, Dept Bot, GaTE Lab, Sao Paulo - Brazil

^[3] Rutgers State Univ, Dept Plant Biol & Pathol, New Brunswick, NJ - USA

• Tipo de documento: Artigo Científico
• Fonte: BioEnergy Research; JAN 2022.
• Citações Web of Science: 0

Resumo

Duckweeds are fast-growing aquatic plants suitable for bioenergy due to fermentable-rich biomass with low lignin and unique cell wall. The plant cell wall is built from pathways of nucleotide sugar genes that culminate in cell wall synthesis and deposition. Therefore, understanding these pathways by mapping the genes involved and their expression would be necessary for developing tools to improve bioenergy production. In this work, the genes associated with the NDP-sugar pathway (de novo and salvage) were mapped and correlated to the chemical characterization of the giant duckweed (Spirodela polyrhiza) cell wall. This plant biomass has been characterized as having 3% starch, 49% soluble sugars, 40% cell wall, and 8% non-measured compounds. The cell walls are synthesized by the NDP-sugar pathway and represent a significant carbon sink. This sink results from the action of proteins encoded by 190 orthologs of the 38 targets of the NDP-sugar pathway, of which 49 are starch and sucrose-related, 54 pectins-related, 65 hemicellulose-related, and 23 cellulose-related. Chemical analysis of the cell wall revealed 49% pectins, 23% hemicellulose, and 10% cellulose. These carbohydrates can potentially provide biorefinery as adjuvants, cosmetics, food additives, stabilizers, gelling agents, and principally as biofuels. (AU)

• Processo FAPESP: 19/13936-0 - O papel do xiloglucano na determinação da arquitetura da parede celular de cana de açúcar
• Beneficiário: Adriana Grandis
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/50884-5 - INCT 2014: Instituto Nacional de Ciência e Tecnologia do Bioetanol
• Beneficiário: Marcos Silveira Buckeridge
• Modalidade de apoio: Auxílio à Pesquisa - Temático