Cell Wall Dynamics: Formation and Disassembly from a Transcriptomic and Molecular Perspective

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 2757

Special Issue Editor


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Guest Editor
Institute Biological Science, University of Talca, Talca 3465548, Chile
Interests: plant molecular biology; cell wall dynamics; abiotic stress

Special Issue Information

Dear Colleagues,

Plant cell walls are an intricate and complex structure which is modified during cell growth and highly regulated during development. In this sense, a plant cell wall could be a rigid or flexible structure. Interestingly, the dynamics of cell walls include the synthesis and degradation of polymer components which are mediated by several genes and enzymes, allowing the formation and breakdown of glycosidic bonds from polysaccharide polymers. Polymer structure offers support and protection but can also act as filtering. Different strategies have been used to identify the molecular players in both processes, and interestingly, several common genes/enzymes take part. Despite significant advances in knowledge in recent years, several aspects remain to be identified. So far, it is known that a fine coordination is required within all molecular players to have an adequate assembly and disassembly of the structure.

Dr. Raúl Herrera
Guest Editor

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Keywords

  • cell wall assembly
  • cell wall disassembly
  • cell wall dynamics
  • gene regulation on cell walls

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Published Papers (1 paper)

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Research

11 pages, 753 KiB  
Article
Pectin Characteristics Affect Root Growth in Spinach under Salinity
by Jia Liu, Victoria Otie, Asana Matsuura, Kashiwagi Junichi, Muhammad Irshad, Yuanrun Zheng, Haruyuki Fujimaki and Ping An
Plants 2022, 11(22), 3130; https://doi.org/10.3390/plants11223130 - 16 Nov 2022
Cited by 4 | Viewed by 2341
Abstract
In understanding the role of root cell wall mechanisms in plant tolerance to salinity, it is important to elucidate the changes in the pectin composition and physical properties of the cell wall. Two salt-sensitive (Helan 3 and Prius β) and one salt-tolerant (R7) [...] Read more.
In understanding the role of root cell wall mechanisms in plant tolerance to salinity, it is important to elucidate the changes in the pectin composition and physical properties of the cell wall. Two salt-sensitive (Helan 3 and Prius β) and one salt-tolerant (R7) spinach cultivars were used to investigate the pectin polysaccharides, the characteristics of pectin, including the degree of pectin methy-lesterification, the HG:RG-I ratio, neutral side chains (galactan/arabinangalactan), and elasticity and viscosity parameters in the root elongation zone under salinity. Root growth was inhibited by salinity, whereas the root diameter was thickened in all cultivars. Salinity significantly reduced cell wall extensibility in all cultivars, and increased cell wall viscosity in Helan 3 and R7 relative to Prius β. Pectin was significantly increased under salinity stress. Cell wall viscosity was affected by pectin due to the molar proportion of uronic acid and/or pectin characteristics (HG:RG-I ratio). The molar proportion of uronic acid in pectin was reduced in Helan 3 and R7 compared with Prius β. The length and degree of pectin methy-lesterification of neutral side chains were significantly decreased in the R7 cultivar, with no significant changes in the other two cultivars. Demethylation of pectin could alter root growth and boost salt tolerance in the R7 cultivar. In this study, it is shown that cell wall pectin played important roles in regulating the root growth of Spinacia oleracea L. under salinity stress. Full article
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