The influence of management systems on Arbuscular Mycorrhizal fungi recruitment by grapevine rootstocks

Conference Contribution - unpublished
Fields of Research
Arbuscular mycorrhizal fungi (AMF) play vital roles in sustainable agricultural ecosystems, such as vineyards, by promoting plant growth and increasing resilience to environmental changes. To maximize the benefits of AMF communities in vineyard ecosystems, it is crucial to understand how management systems impact their composition. Additionally, it remains unclear whether AMF communities differ between organically managed vineyards and conventionally managed ones. This study conducted surveys of vineyards throughout the Marlborough region, New Zealand, aiming to identify AMF communities inhabiting the roots of various rootstocks grafted with Sauvignon Blanc and Pinot Noir, across both conventional and organic systems. The AMF communities were identified based on spores isolated from trap cultures established with the collected grapevine roots, and by next-generation sequencing technologies (Illumina Miseq). The identified AMF species/genera belonged to Glomeraceae, Claroideoglomeraceae and Diversisporaceae. The results revealed a significant difference in AMF community composition between rootstocks and in their interaction with management systems. These findings suggest that vineyard management systems affect the recruitment of AMF by rootstocks, potentially making certain rootstocks better suited to organic systems because of the AMF communities they support. This could lead to enhanced biodiversity, offering greater benefits to organic systems.