The climatic challenge: which plants will people use in the next century?

J. S. Borrell*, S. Dodsworth, F. Forest, O. A. Pérez-Escobar, M. A. Lee, E. Mattana, P. C. Stevenson, M. J. R. Howes, H. W. Pritchard, D. Ballesteros, B. Kusumoto, I. Ondo, J. Moat, W. Milliken, P. Ryan, T. Ulian, S. Pironon

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    More than 31,000 useful plant species have been documented to fulfil needs and services for humans or the animals and environment we depend on. Despite this diversity, humans currently satisfy most requirements with surprisingly few plant species; for example, just three crops – rice, wheat and maize – comprise more than 50% of plant derived calories. Here, we synthesize the projected impact of global climatic change on useful plants across the spectrum of plant domestication. We illustrate the demographic, spatial, ecophysiological, chemical, functional, evolutionary and cultural traits that are likely to characterise useful plants and their resilience in the next century. Using this framework, we consider a range of possible pathways for future human use of plants. These are centred on two trade-offs: i) diversification versus specialization in the range of species we utilize, and ii) substitution of the species towards those better suited to future climate versus facilitating adaptation in our existing suite of dominant useful plants. In the coming century, major challenges to agriculture and biodiversity will be dominated by increased climatic variation, shifting species ranges, disruption to biotic interactions, nutrient limitation and emerging pests and pathogens. These challenges must be mitigated, whilst enhancing sustainable production to meet the needs of a growing population and a more resource intensive standard of living. With the continued erosion of biodiversity, our future ability to choose among these pathways and trade-offs is likely to be diminished.

    Original languageEnglish
    Article number103872
    Number of pages14
    JournalEnvironmental and Experimental Botany
    Volume170
    Early online date30 Aug 2019
    DOIs
    Publication statusPublished - 1 Feb 2020

    Keywords

    • biodiversity
    • climate change
    • conservation
    • crop breeding
    • crop wild relatives
    • domestication
    • food security
    • medicinal plants
    • resilience
    • sustainable development
    • UKRI
    • BBSRC
    • BB/P02307X/1
    • NERC
    • NE/M021351/1

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