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Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
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Related Experiment Video

Updated: Dec 10, 2025

Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean
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The expression patterns and putative function of nitrate transporter 2.5 in plants.

Ranran Liu1, Ting Jia1, Bing Cui1

  • 1Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University , Jinan, P.R. China.

Plant Signaling & Behavior
|September 2, 2020
PubMed
Summary

Nitrate transporter 2.5 (NRT2.5) facilitates nitrogen uptake under low nutrient conditions across various plant species. This transporter

Keywords:
Low nitrogenNRT2.5nitrate transporternitrogen starvation

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Area of Science:

  • Plant Physiology
  • Molecular Biology
  • Agricultural Science

Background:

  • Nitrate transporter 2.5 (NRT2.5) is crucial for nitrogen (N) uptake, particularly under nitrogen limitation and starvation.
  • Its expression is observed in roots and leaves of diverse species including Arabidopsis, poplars, tea trees, and cassava.
  • NRT2.5 also functions in seed development and nitrate accumulation in wheat and other crops.

Purpose of the Study:

  • To review the diverse functions and expression patterns of NRT2.5 in various plant species.
  • To highlight the role of NRT2.5 in nitrogen assimilation and signaling pathways.
  • To provide insights for improving crop yield through understanding NRT2.5.

Main Methods:

  • Literature review of published research on NRT2.5.
  • Analysis of gene expression data across different plant species and tissues.
  • Examination of NRT2.5 interactions with transcription factors and signaling components.

Main Results:

  • NRT2.5 functions in nitrate transport under low nitrate and nitrogen starvation conditions.
  • Expression patterns vary, with presence in roots, leaves, seeds, and reproductive structures.
  • NRT2.5 interacts with transcription factors, suggesting a role in nitrate signal transduction.

Conclusions:

  • NRT2.5 is a vital nitrate transporter with conserved and species-specific roles in plants.
  • Understanding NRT2.5 function is key to enhancing nitrogen use efficiency (NUE) and crop productivity.
  • Further research into NRT2.5 interactions can unlock strategies for agricultural improvement.