Insights from invasion ecology

can consideration of eco-evolutionary experience promote benefits from root mutualisms in plant production?

Josep Ramoneda*, Johannes Le Roux, Emmanuel Frossard, Cecilia Bester, Noel Oettlé, Beat Frey, Hannes Andres Gamper

*Corresponding author for this work

Research output: Contribution to journalReview article

Abstract

Mutualistic plant-microbial functioning relies on co-adapted symbiotic partners as well as conducive environmental conditions. Choosing particular plant genotypes for domestication and subsequent cultivar selection can narrow the gene pools of crop plants to a degree that they are no longer able to benefit from microbial mutualists. Elevated mineral nutrient levels in cultivated soils also reduce the dependence of crops on nutritional support by mutualists such as mycorrhizal fungi and rhizobia. Thus, current ways of crop production are predestined to compromise the propagation and function of microbial symbionts, limiting their long-term benefits for plant yield stability. The influence of mutualists on non-native plant establishment and spread, i.e. biological invasions, provides an unexplored analogue to contemporary crop production that accounts for mutualistic services from symbionts like rhizobia and mycorrhizae. The historical exposure of organisms to biotic interactions over evolutionary timescales, or so-called eco-evolutionary experience (EEE), has been used to explain the success of such invasions. In this paper, we stress that consideration of the EEE concept can shed light on how to overcome the loss of microbial mutualist functions following crop domestication and breeding. We propose specific experimental approaches to utilize the wild ancestors of crops to determine whether crop domestication compromised the benefits derived from root microbial symbioses or not. This can predict the potential for success of mutualistic symbiosis manipulation in modern crops and the maintenance of effective microbial mutualisms over the long term.

Original languageEnglish
Article numberplz060
Pages (from-to)1-9
Number of pages9
JournalAoB PLANTS
Volume11
Issue number6
DOIs
Publication statusPublished - Dec 2019

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Bibliographical note

Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Adaptation
  • biological invasions
  • co-introduction
  • crop breeding
  • crop plant domestication
  • crop wild relative
  • ecological fitting
  • plant-microbe interactions
  • range expansion
  • root microbiomes

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