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Dynamics of pectic homogalacturonan in cellular morphogenesis and adhesion, wall integrity sensing and plant development

Journal Article · · Nature Plants (Online)
 [1];  [2];  [3]
  1. Sichuan Univ., Chengdu (China); Northwestern University, Evanston, IL, United States
  2. Pennsylvania State Univ., University Park, PA (United States)
  3. Sichuan Univ., Chengdu (China)
Homogalacturonan (HG) is the most abundant pectin subtype in plant cell walls. Although it is a linear homopolymer, its modification states allow for complex molecular encoding. HG metabolism affects its structure, chemical properties, mobility and binding capacity, allowing it to interact dynamically with other polymers during wall assembly and remodelling and to facilitate anisotropic cell growth, cell adhesion and separation, and organ morphogenesis. HGs have also recently been found to function as signalling molecules that transmit information about wall integrity to the cell. Here we highlight recent advances in our understanding of the dual functions of HG as a dynamic structural component of the cell wall and an initiator of intrinsic and environmental signalling. Here, we also predict how HG might interconnect the cell wall, plasma membrane and intracellular components with transcriptional networks to regulate plant growth and development.
Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
Fundamental Research Funds for the Central Universities; Sichuan University; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001090; SC0021314
OSTI ID:
1865662
Alternate ID(s):
OSTI ID: 1915236
Journal Information:
Nature Plants (Online), Journal Name: Nature Plants (Online) Journal Issue: 4 Vol. 8; ISSN 2055-0278
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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