The molecular components of nutrient exchange in arbuscular mycorrhizal interactions

Ruairidh J.H. Sawers, Shu Yi Yang, Caroline Gutjahr, Uta Paszkowski

Research output: Chapter in Book/Report/Conference proceedingChapter

9 Scopus citations

Abstract

The driving force behind arbuscular mycorrhizal (AM) interactions is an exchange of nutrients between fungus and plant. Glomeromycotan fungi are obligate symbionts and rely on the carbon provided by their plant hosts to complete their life cycle. In return, the fungus provides nutritional benefits to the plant, notably by delivering minerals. The majority of this nutrient exchange is thought to occur in root cortical cells containing the highly-branched fungal arbuscules. In this chapter, we describe the molecular components of the arbusculated cell and the proteins involved in the transfer of nutrients between fungus and plant. We consider, in detail, the passage of phosphorous and nitrogen from the soil to the arbusculated cell and the concomitant delivery of carbon to the fungal symbiont. In natural conditions, the exchange of nutrients does not need to be completely equitable and selective pressure may act on both partners to push the balance in their favour. In cultivated plants, the artificial environment may further distort the balance. We discuss how a better understanding of the molecular regulation of nutrient transfer benefits attempts to optimise AM associations for agricultural use.

Original languageEnglish (US)
Title of host publicationMycorrhizae
Subtitle of host publicationSustainable Agriculture and Forestry
PublisherSpringer Netherlands
Pages37-59
Number of pages23
ISBN (Print)9781402087691
DOIs
StatePublished - Dec 1 2008

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)

Fingerprint Dive into the research topics of 'The molecular components of nutrient exchange in arbuscular mycorrhizal interactions'. Together they form a unique fingerprint.

Cite this