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Assembly and Characterization of Polyelectrolyte Complex Micelles
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Characterization of the

Li Song1,2, Babu Valliyodan3, Silvas Prince4,5

  • 1Institutes of Agricultural Science and Technology Development, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China. songli@yzu.edu.cn.

International Journal of Molecular Sciences
|September 14, 2018
PubMed
Summary
This summary is machine-generated.

Soybean xyloglucan endotransglycosylases/hydrolases (XTHs) were identified and analyzed. Overexpressing an Arabidopsis XTH gene in soybean enhanced flooding tolerance, suggesting GmXTHs regulate stress responses.

Keywords:
Glycine maxXTH gene familyfloodingplant genomeplant hormoneroot plasticitytransgenic soybean

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Area of Science:

  • Plant molecular biology
  • Biochemistry
  • Genomics

Background:

  • Xyloglucan endotransglycosylases/hydrolases (XTHs) are key enzymes in plant cell wall modification, influencing extensibility.
  • The role and diversity of XTHs in soybean (Glycine max) remain largely unexplored.

Purpose of the Study:

  • To identify and characterize soybean XTH genes (GmXTHs).
  • To investigate the expression patterns of GmXTHs under various conditions, particularly stress.
  • To evaluate the potential of GmXTHs in enhancing stress tolerance in soybean.

Main Methods:

  • Phylogenetic analysis of 61 identified GmXTH genes.
  • Identification of conserved catalytic motifs.
  • Analysis of GmXTH gene expression patterns across different organs and in response to ethylene and flooding.
  • Functional analysis via overexpression of Arabidopsis AtXTH31 in soybean.

Main Results:

  • 61 GmXTH genes were identified and classified into three subgroups, with genome duplication contributing to their expansion.
  • A conserved catalytic amino acid motif was found in all GmXTHs.
  • Most GmXTHs showed organ-specific expression, and many were associated with ethylene and flooding stress responses.
  • Transgenic soybean overexpressing AtXTH31 displayed enhanced tolerance to flooding, evidenced by improved germination and root/hypocotyl growth.

Conclusions:

  • GmXTH genes are involved in soybean stress responses, particularly to flooding.
  • The study provides evidence for the role of XTH genes in plant flooding stress tolerance.
  • This research lays the groundwork for utilizing GmXTHs to improve soybean resilience to environmental stresses.