期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 69, 期 22, 页码 5325-5339出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/ery317
关键词
beta-1,3-glucanase; callose; cell-to-cell communication; glucan synthase-like; plasmodesmata; symplastic trafficking
资金
- National Research Foundation of Korea [2015R1A2A1A10053576, 2018R1A2A1A05077295, 2017R1A4A1015515]
- Next Generation BioGreen 21 Program (SSAC) [PJ01322601]
- Rural Development Administration, Republic of Korea
- Brain Korea 21 Plus program
- National Research Foundation of Korea [2017R1A4A1015515, 2018R1A2A1A05077295, 2015R1A2A1A10053576] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 beta-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 beta-1,3-glucanase. The diverse modes of regulation by callose synthase and beta-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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