Phosphorus deficiency in plants: Responses, adaptive mechanisms, and signaling

Tariq Aziz, Muhammad Sabir*, Muhammad Farooq, M. Aamer Maqsood, Hamaad Raza Ahmad, Ejaz Ahmad Warraich

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

21 Citations (Scopus)

Abstract

Phosphorus (P) deficiency is a common nutritional factor limiting agricultural production around the globe. Application of phosphatic fertilizers is generally recommended to cope with P deficiency; however, low use efficiency of available P fertilizers both in calcareous and acid soils limits its viability and also had serious environmental concerns. Higher plants have adapted a number of mechanism to live with low available P in soil such as changes in root morphology and architecture, decreased growth rate, improved P uptake and utilization efficiency, and exudation of organic acids and enzymes to solubilize external inorganic and organic P compounds in the rhizosphere. Plant species and even cultivars widely differ in P efficiency because of differences in one or more of these mechanisms. Exploitation of these genetic variations among crop plants can sustain agricultural production. Understanding the mechanism involved in sensing P deficiency could facilitate selection, breeding, and genetic engineering approaches to improve crop production in P-stressed environments and could reduce dependence on nonrenewable inorganic P resources. In this chapter, we briefly reviewed the responses of P deficiency in higher plants, their adaptive mechanisms, and signaling pathways.

Original languageEnglish
Title of host publicationPlant Signaling
Subtitle of host publicationUnderstanding the Molecular Crosstalk
PublisherSpringer India
Pages133-148
Number of pages16
Volume9788132215424
ISBN (Electronic)9788132215424
ISBN (Print)8132215419, 9788132215417
DOIs
Publication statusPublished - Oct 1 2014
Externally publishedYes

Keywords

  • Organic acid efflux
  • Phosphorus
  • Phosphorus signaling deficiency
  • Phosphorus utilization efficiency

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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