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An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

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Published on: October 22, 2018

Nodule performance within a changing environmental context.

Iker Aranjuelo¹, Cesar Arrese-Igor², Gemma Molero³

¹Instituto de Agrobiotecnología, Universidad Pública de Navarra-CSIC-Gobierno de Navarra, Campus de Arrosadía, E-31192 Mutilva Baja, Spain.

Journal of Plant Physiology

|June 30, 2014

Summary

Climate change impacts crop productivity. This review synthesizes how abiotic stresses like water, salinity, temperature, and elevated carbon dioxide (CO2) affect nitrogen (N2) fixation in plants, crucial for agriculture.

Keywords:

C/N metabolism Climate change N(2) fixation Nodule Omic methodologies

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Area of Science:

Agricultural Science
Plant Physiology
Environmental Science

Background:

Global climate models predict significant alterations in temperature, water availability, and atmospheric carbon dioxide (CO2).
Developing highly productive crops is essential to adapt to changing environmental conditions.
Nitrogen (N2) fixing plants are globally significant agricultural crops, making their performance under stress critical.

Purpose of the Study:

To review and compile existing literature on the effects of abiotic stress conditions on nodule performance and N2 fixation.
To analyze the impact of water stress, salinity, temperature, and elevated [CO2] on N2 fixation.
To investigate the effects of interacting environmental conditions on nodule functioning.

Main Methods:

Literature review compiling results from existing studies.
Analysis of environmental factors including water stress, salinity, temperature, and elevated [CO2].
Inclusion of studies examining interacting environmental conditions.

Main Results:

General patterns of nodule response were observed across different environmental factors.
Nodule carbohydrate and N compound availability, along with oxygen reactive species (ROS), are key modulators of N2 fixation.
Nodule performance under limiting conditions, except for water and [CO2], requires further detailed characterization.

Conclusions:

Abiotic stresses significantly influence nodule performance and N2 fixation.
Integrated investigations using transcriptomics, proteomics, metabolomics, and stable isotopes are necessary for a comprehensive understanding.
Further research is needed to fully characterize nodule responses to various limiting growth conditions.