Callose balancing at plasmodesmata

Journal of Experimental Botany
Shu-Wei WuJae-Yean Kim

Abstract

In plants, communication and molecular exchanges between different cells and tissues are dependent on the apoplastic and symplastic pathways. Symplastic molecular exchanges take place through the plasmodesmata, which connect the cytoplasm of neighboring cells in a highly controlled manner. Callose, a β-1,3-glucan polysaccharide, is a plasmodesmal marker molecule that is deposited in cell walls near the neck zone of plasmodesmata and controls their permeability. During cell differentiation and plant development, and in response to diverse stresses, the level of callose in plasmodesmata is highly regulated by two antagonistic enzymes, callose synthase or glucan synthase-like and β-1,3-glucanase. The diverse modes of regulation by callose synthase and β-1,3-glucanase have been uncovered in the past decades through biochemical, molecular, genetic, and omics methods. This review highlights recent findings regarding the function of plasmodesmal callose and the molecular players involved in callose metabolism, and provides new insight into the mechanisms maintaining plasmodesmal callose homeostasis.

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Citations

Oct 3, 2019·Proceedings of the National Academy of Sciences of the United States of America·Dingquan HuangXu Chen
Oct 18, 2019·Frontiers in Plant Science·Jianyang Liu, Sherif M Sherif
Dec 18, 2019·Plants·Yuri L DorokhovTatiana V Komarova
Jul 17, 2020·Frontiers in Plant Science·Ekaterina V SheshukovaTatiana V Komarova
Sep 6, 2019·International Journal of Molecular Sciences·Chiara Pagliarani, Giorgio Gambino
Nov 17, 2020·Frontiers in Plant Science·Lukas Pfeifer, Birgit Classen
Dec 29, 2020·Frontiers in Plant Science·Isaac Vega-MuñozSimon Stael
Mar 7, 2021·International Journal of Molecular Sciences·Ying WangZhixiang Chen
Apr 20, 2021·Frontiers in Plant Science·Khalid AmariManfred Heinlein
May 8, 2021·Frontiers in Plant Science·Zhongpeng LiKyaw Aung

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