Root traits for infertile soils

Philip White, Timothy George, Lionel Dupuy, Alison Karley, Tracy Valentine, Lea Wiesel, Jane Wishart

Research output: Contribution to journalArticlepeer-review

128 Citations (Scopus)
4 Downloads (Pure)

Abstract

Crop production is often restricted by the availability of essential mineral elements. For example, the availability of N, P, K, and S limits low-input agriculture, the phytoavailability of Fe, Zn, and Cu limits crop production on alkaline and calcareous soils, and P, Mo, Mg, Ca,and K deficiencies, together with proton, Al and Mn toxicities, limit crop production on acid soils. Since essential mineral elements are acquired by the root system, the development of crop genotypes with root traits increasing their acquisition should increase yields on infertile soils. This paper examines root traits likely to improve the acquisition of these elements and observes that, although the efficient acquisition of a particular element requires a specific set of root traits, suites of traits can be identified that benefit the acquisition of a group of mineral elements. Elements can be divided into three Groups based on common trait requirements. Group 1 comprises N, S, K, B, and P. Group 2 comprises Fe, Zn, Cu, Mn, and Ni. Group 3 contains mineral elements that rarely affect crop production. It is argued that breeding for a limited number of distinct root ideotypes,addressing particular combinations of mineral imbalances, should be pursued.
Original languageEnglish
Article number193
Pages (from-to)1-7
Number of pages7
JournalFrontiers in Plant Science
Volume4
DOIs
Publication statusPublished - 11 Jun 2013

Keywords

  • Root architecture
  • Mineral nutrition
  • Rhizosphere
  • Soil solution
  • Uptake

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