Callose synthesis in higher plants

Plant Signaling & Behavior
Xiong-Yan Chen, Jae-Yean Kim


Callose is a polysaccharide in the form of beta-1,3-glucan with some beta-1,6-branches and it exists in the cell walls of a wide variety of higher plants. Callose plays important roles during a variety of processes in plant development and/or in response to multiple biotic and abiotic stresses. It is now generally believed that callose is produced by callose synthases and that it is degraded by beta-1,3-glucanases. Despite the importance of callose in plants, we have only recently begun to elucidate the molecular mechanism of its synthesis. Molecular and genetic studies in Arabidopsis have identified a set of genes that are involved in the biosynthesis and degradation of callose. In this mini-review, we highlight recent progress in understanding callose biosynthesis and degradation and discuss the future challenges of unraveling the mechanism(s) by which callose synthase operate.


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Related Concepts

Genes, Plant
GSL1 protein, Arabidopsis
Gene Expression Regulation, Plant
Cell Division Phases
Plant Development
1,3-beta-Glucan synthase

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