Crop Domestication, Root Trait Syndromes, and Soil Nutrient Acquisition in Organic Agroecosystems: A Systematic Review

Frontiers in Sustainable Food Systems

卷:5

Victoria Nimmo¹  Marney E. Isaac¹  Cynthia M. Kallenbach²  Adam Martin³  Istvan Rajcan⁴  T. D. Boyle⁴  Xin Lu⁴  Martin Entz⁵  Michelle Carkner⁵  Jennifer Elise Schmidt⁶  Andrea Leptin⁶  Amélie C. M. Gaudin⁶ 

[1] Department of Geography, University of Toronto, Toronto, ON, Canada;

[2] Department of Natural Resource Sciences, McGill University, Montreal, QC, Canada;

[3] Department of Physical and Environmental Sciences, University of Toronto, Toronto, ON, Canada;

[4] Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada;

[5] Department of Plant Science, University of Manitoba, Winnipeg, MB, Canada;

[6] Department of Plant Sciences, University of California, Davis, Davis, CA, United States;

关键词: agroecology;    breeding;    ecological nutrient management;    food security;    functional traits;    wild relatives;   

DOI  :  10.3389/fsufs.2021.716480

来源: DOAJ

【 摘 要 】

Selecting crops that express certain reproductive, leaf, and root traits has formed detectable, albeit diverse, crop domestication syndromes. However, scientific and informal on-farm research has primarily focused on understanding and managing linkages between only certain domestication traits and yield. There is strong evidence suggesting that functional traits can be used to hypothesize and detect trade-offs, constraints, and synergies among crop yield and other aspects of crop biology and agroecosystem function. Comparisons in the functional traits of crops vs. wild plants has emerged as a critical avenue that has helped inform a better understanding of how plant domestication has reshaped relationships among yield and traits. For instance, recent research has shown domestication has led important economic crops to express extreme functional trait values among plants globally, with potentially major implications for yield stability, nutrient acquisition strategies, and the success of ecological nutrient management. Here, we present an evidence synthesis of domestication effects on crop root functional traits, and their hypothesized impact on nutrient acquisition strategies in organic and low input agroecosystems. Drawing on global trait databases and published datasets, we show detectable shifts in root trait strategies with domestication. Relationships between domestication syndromes in root traits and nutrient acquisition strategies in low input systems underscores the need for a shift in breeding paradigms for organic agriculture. This is increasingly important given efforts to achieve Sustainable Development Goal (SDG) targets of Zero Hunger via resilient agriculture practices such as ecological nutrient management and maintenance of genetic diversity.

【 授权许可】

Unknown