The Plasmodesmata-Located β-1,3-Glucanase Enzyme PdBG4 Regulates Trichomes Growth in Arabidopsis thaliana

Cells. 2022 Sep 13;11(18):2856. doi: 10.3390/cells11182856.

Abstract

Intercellular material transport and information transmission in plants are carried out through the plasmodesmata (PD). The amount of callose around the PD controls channel permeability. In plants, β-1,3-glucanase can degrade callose and affect plant growth and development. In this study, the gene producing PD-localized β-1,3-glucanase and regulating the leaf trichomes is identified and named PdBG4. Based on functional analysis through a series of genetic manipulation assays, we found that the high expression of PdBG4 was associated with strong PD permeability and short Arabidopsis thaliana leaf trichomes. Conversely, the low expression of PdBG4 correlated with weak PD permeability and long Arabidopsis thaliana leaf trichomes. This study revealed that the PdBG4 gene negatively modulates leaf trichome growth and development by regulating PD permeability.

Keywords: intercellular permeability; plasmodesmata; trichomes; β-1,3-glucanase.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arabidopsis Proteins* / genetics
  • Arabidopsis Proteins* / metabolism
  • Arabidopsis* / metabolism
  • Plant Development
  • Plants / metabolism
  • Plasmodesmata / metabolism
  • Trichomes / metabolism

Substances

  • Arabidopsis Proteins

Grants and funding

This work was supported by the State Key Laboratory of Cotton Biology Open Fund (CB2021A04), the National Natural Science Foundation of China (32001589), and the Anhui Natural Science Research Project (KJ2020B26).