Exploring the transfer of recent plant photosynthates to soil microbes: mycorrhizal pathway vs direct root exudation

Friday, December 16, 2016

A significant proportion of plant photosynthates is transported below ground shortly after photoassimilation and subsequently released to soil microbes. Both root exudation and transfer to
mycorrhizal fungi occur rapidly after photosynthesis, ranging from a few hours in grasses to a few days in trees. Root exudation stimulates microbial decomposition of soil organic matter, which in turn improves nutrient availability along the rhizosphere.