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Future roots for future soils

Journal Article · · Plant, Cell and Environment
DOI:https://doi.org/10.1111/pce.14213· OSTI ID:1833117
 [1];  [2];  [1];  [3]
  1. Department of Plant Science The Pennsylvania State University University Park Pennsylvania USA
  2. School of Biosciences University of Nottingham Leicestershire UK
  3. Centre for Crop Systems Analysis Wageningen University &, Research Wageningen The Netherlands
Abstract

Mechanical impedance constrains root growth in most soils. Crop cultivation changed the impedance characteristics of native soils, through topsoil erosion, loss of organic matter, disruption of soil structure and loss of biopores. Increasing adoption of Conservation Agriculture in high‐input agroecosystems is returning cultivated soils to the soil impedance characteristics of native soils, but in the low‐input agroecosystems characteristic of developing nations, ongoing soil degradation is generating more challenging environments for root growth. We propose that root phenotypes have evolved to adapt to the altered impedance characteristics of cultivated soil during crop domestication. The diverging trajectories of soils under Conservation Agriculture and low‐input agroecosystems have implications for strategies to develop crops to meet global needs under climate change. We present several root ideotypes as breeding targets under the impedance regimes of both high‐input and low‐input agroecosystems, as well as a set of root phenotypes that should be useful in both scenarios. We argue that a ‘whole plant in whole soil’ perspective will be useful in guiding the development of future crops for future soils.

Sponsoring Organization:
USDOE
OSTI ID:
1833117
Alternate ID(s):
OSTI ID: 1833122
Journal Information:
Plant, Cell and Environment, Journal Name: Plant, Cell and Environment Journal Issue: 3 Vol. 45; ISSN 0140-7791
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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