Arbuscular mycorrhizal symbiosis increases phosphorus uptake and productivity of mixtures of maize varieties compared to monocultures

Xin Xin Wang, Ellis Hoffland, Gu Feng*, Thomas W. Kuyper

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)

Abstract

Ecological intensification seeks to achieve crop yield increases by intensifying complementary or facilitative interactions between plant species or varieties. Different species of arbuscular mycorrhizal fungi (AMF) exhibit niche differentiation and show selectivity towards certain plants, which can further enhance complementarity. It is not clear whether in the presence of one AMF species, where mycelial networks connect crop species, opportunities for complementarity effects may be reduced. We grew monocultures and mixtures of maize varieties in a greenhouse with one species of AMF, Funneliformis mosseae, during two consecutive years to investigate whether under such conditions the mycorrhizal symbiosis would affect complementarity and overyielding compared to non-mycorrhizal plants. Variety mixtures showed increased phosphatase activity and mycorrhizal colonization, enhanced phosphorus uptake and overyielding when plants were mycorrhizal. There was no overyielding when plants were non-mycorrhizal. The increase in relative yield total was due to complementarity effects. Synthesis and applications. Our study implies that appropriate agricultural management that enhances mycorrhizal fungal contribution to ecosystem services may result in overyielding in terms of yield or phosphorus uptake through mixing varieties within one crop species.

Original languageEnglish
Pages (from-to)2203-2211
JournalJournal of Applied Ecology
Volume57
Issue number11
Early online date9 Aug 2020
DOIs
Publication statusPublished - Nov 2020

Keywords

  • complementarity effects
  • maize varieties
  • mixtures
  • monocultures
  • mycorrhizal networks
  • overyielding
  • phosphorus
  • relative yield total

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