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Updated: Aug 17, 2025

A Simple Protocol for Mapping the Plant Root System Architecture Traits

A Simple Protocol for Mapping the Plant Root System Architecture Traits

Published on: February 10, 2023

Plant phosphate status influences root biotic interactions.

Lekha T Pazhamala¹, Jitender Giri¹

¹National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India.

Journal of Experimental Botany

|December 14, 2022

Summary

Crop yield suffers from phosphorus deficiency and biotic stresses. Understanding the complex interplay between phosphate starvation response (PSR) and plant immunity is key to enhancing crop resilience.

Keywords:

Biotic stress PHR defense immunity phosphate starvation response phytohormones

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Published on: July 2, 2018

Area of Science:

Plant Physiology
Molecular Biology
Agronomy
Plant-Microbe Interactions

Background:

Phosphorus (P) deficiency combined with biotic stresses significantly reduces crop yield.
Plant responses to P deficiency are complex and involve intricate signaling pathways.
Plant-microbe interactions, crucial for phosphate acquisition, are modulated by P availability.

Purpose of the Study:

To comprehensively review the key molecular players regulating plant responses to combined P deficiency and biotic stresses.
To elucidate the crosstalk between phosphate starvation response (PSR) and plant immunity.
To propose strategies for improving crop resilience under these dual stress conditions.

Main Methods:

Literature review and synthesis of existing research on plant nutrient signaling and immunity.
Analysis of the role of the phosphate starvation response (PSR) pathway, including PHR1 and its homologs.
Examination of the influence of P status on plant interactions with rhizosphere microbes, pathogens, and herbivores.

Main Results:

Plant-microbe associations are dynamically regulated by P availability, impacting nutrient acquisition and stress tolerance.
The phosphate starvation response (PSR) pathway, mediated by PHR1, is central to P homeostasis and plant immunity.
Crosstalk occurs among transcription factors, hormones, miRNAs, and transporters, influencing plant-biotic-phosphate interactions.

Conclusions:

Maintaining a balance between P homeostasis and plant immunity is critical for crop performance under combined stresses.
Understanding the coupled PSR-PHR1 immune system offers targets for genetic improvement.
Harnessing knowledge of these interactions can lead to novel strategies for enhancing crop resilience.