Affiliation:
1. Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA
2. MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, USA
3. Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
Abstract
Abstract
Mixed β(1,3;1,4)-linkage glucan (MLG) is commonly found in the monocot lineage, at particularly high levels in the Poaceae family, but also in the evolutionally distant genus, Equisetum. MLG has several properties that make it unique from other plant cell wall polysaccharides. It consists of β1,4-linked polymers of glucose interspersed with β1,3-linkages, but the presence of β1,3-linkages provides quite different physical properties compared to its closest form of the cell wall component, cellulose. The mechanisms of MLG biosynthesis have been investigated to understand whether single or multiple enzymes are required to build mixed linkages in the glucan chain. Currently, MLG synthesis by a single enzyme is supported by mutagenesis analyses of cellulose synthase-like F6, the major MLG synthase, but further investigation is needed to gather mechanistic insights. Because of transient accumulation of MLG in elongating cells and vegetative tissues, several hypotheses have been proposed to explain the role of MLG in the plant cell wall. Studies have been carried out to identify gene expression regulators during development and light cycles as well as enzymes involved in MLG organization in the cell wall. A role of MLG as a storage molecule in grains is evident, but the role of MLG in vegetative tissues is still not well understood. Characterization of a cell wall component is difficult due to the complex heterogeneity of the plant cell wall. However, as detailed in this review, recent exciting research has made significant impacts in the understanding of MLG biology in plants.
Funder
Great Lakes Bioenergy Research Center, U.S. Department of Energy, Office x
Publisher
Oxford University Press (OUP)
Subject
Cell Biology,Plant Science,Physiology,General Medicine
Reference53 articles.
1. A new substrate for investigating the specificity of β-glucan hydrolases;Anderson;FEBS Lett.,1975
2. Circadian, carbon, and light control of expansion growth and leaf movement;Apelt;Plant Physiol.,2017
3. Characterisation of cellulose synthase like F6 (CslF6) mutants shows altered carbon metabolism in β-D-(1,3;1,4)-glucan deficient grain in Brachypodium distachyon;Bain;Front. Plant Sci.,2021
4. Co-evolution of enzymes involved in plant cell wall metabolism in the grasses;Bulone;Front. Plant Sci.,2019
5. Over-expression of specific HvCslF cellulose synthase-like genes in transgenic barley increases the levels of cell wall (1,3;1,4)-β-d-glucans and alters their fine structure;Burton;Plant Biotechnol. J.,2011
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