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Whole-plant phenotypic engineering: moving beyond ratios for multi-objective optimization of nutrient use efficiency

Journal Article · · Current Opinion in Biotechnology
 [1];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Donald Danforth Plant Science Center, St. Louis, MO (United States)
  3. Univ. of Hawaii at Manoa, Honolulu, HI (United States)

Nutrient use efficiency (NUE) is typically measured as the ratio of yield to soil nutrient availability but ignores contributions of underlying plant traits. Relevant plant traits can be grouped as root acquisition efficiency, shoot radiation use efficiency, and plant metabolic efficiency. The intentional integration of these traits will lead to synergistic improvements of NUE. Recent progress in trait-focused research includes phenotyping root nutrient uptake rates and respiration, engineering reduced photorespiration, and identification of nutrient assimilation pathways. Traits need to be conceptualized in agricultural systems contexts to improve synchrony of plant demand and soil supply of nutrients, including consideration of crop mixtures. Use of simulation modeling and multi-objective optimization will allow accelerating NUE gains beyond selection for a single ratio.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1854477
Journal Information:
Current Opinion in Biotechnology, Journal Name: Current Opinion in Biotechnology Journal Issue: 1 Vol. 75; ISSN 0958-1669
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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