J Integr Plant Biol. ›› 2021, Vol. 63 ›› Issue (6): 1065-1090.DOI: 10.1111/jipb.13090

Special Issue: Development Nitrogen uptake and utilization Root development

• Invited Expert Review • Previous Articles     Next Articles

Root developmental responses to phosphorus nutrition

Dong Liu*   

  1. MOE Key Laboratory of Bioinformatics, School of Life Sciences, Center for Plant Biology, Tsinghua University, Beijing 100084, China

    *Correspondence: Dong Liu (liu-d@mail.tsinghua.edu.cn)
  • Received:2020-11-07 Accepted:2021-03-07 Online:2021-03-12 Published:2021-06-01

Abstract: Phosphorus is an essential macronutrient for plant growth and development. Root system architecture (RSA) affects a plant's ability to obtain phosphate, the major form of phosphorus that plants uptake. In this review, I first consider the relationship between RSA and plant phosphorus-acquisition efficiency, describe how external phosphorus conditions both induce and impose changes in the RSA of major crops and of the model plant Arabidopsis, and discuss whether shoot phosphorus status affects RSA and whether there is a universal root developmental response across all plant species. I then summarize the current understanding of the molecular mechanisms governing root developmental responses to phosphorus deficiency. I also explore the possible reasons for the inconsistent results reported by different research groups and comment on the relevance of some studies performed under laboratory conditions to what occurs in natural environments.

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