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  1. Home
  3. Pngase Activity And Free N-glycans In Phloem Fluid Prepared From Nerium Oleander (oleander Tree).
  1. Home
  3. Pngase Activity And Free N-glycans In Phloem Fluid Prepared From Nerium Oleander (oleander Tree).

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PNGase activity and free N-glycans in phloem fluid prepared from Nerium oleander (oleander tree).

Fuki Otaguro1, Yoshinobu Kimura1,2, Megumi Maeda1,3

  • 1Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, Japan.

Bioscience, Biotechnology, and Biochemistry
|March 25, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Free N-glycans (FNGs) are found in plants and interact with auxin. This study confirms PNGase activity and FNGs are present in plant phloem fluid, suggesting a role in auxin transport.

Keywords:
Nerium oleanderPNGasefree N-glycansphloem fluid

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Area of Science:

  • Plant Biology
  • Biochemistry
  • Molecular Biology

Background:

  • Free N-glycans (FNGs) are abundant in actively growing plants.
  • Recent findings indicate an interaction between FNGs and the plant hormone auxin.
  • Auxin is crucial for plant growth and development, particularly its polar transport.

Purpose of the Study:

  • To determine if PNGase activity, which generates FNGs, occurs in the extracellular space.
  • To investigate the presence of PNGase activity and FNGs in the phloem fluid.
  • To explore the potential role of FNGs and PNGase in auxin's polar transfer.

Main Methods:

  • Analysis of phloem fluid samples.
  • Enzymatic assays to detect PNGase activity.
  • Glycan profiling to identify and quantify FNGs.

Main Results:

  • PNGase activity was detected in the extracellular phloem fluid.
  • Free N-glycans (FNGs) were identified in the phloem fluid.
  • These findings suggest FNGs are produced extracellularly in the phloem.

Conclusions:

  • PNGase activity and FNGs are present in the plant phloem fluid.
  • This supports the hypothesis that FNGs are generated in the extracellular environment.
  • The presence of FNGs and PNGase in the phloem fluid may be linked to auxin transport mechanisms.