Plant Performance and Metabolomic Profile of Loquat in Response to Mycorrhizal Inoculation, Armillaria mellea and Their Interaction

Luigi Lucini, Amelia Camprubi, Jimena Solari, Paolo Bonini, Francesc Garcia-Figueres, Fabrizio Colosimo, Veronica Cirino, Cinta Calvet

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

1 Citazioni (Scopus)

Abstract

A greenhouse experiment was established with loquat plants to investigate the role of arbuscular mycorrhizal fungi (AMF) in the control of the white root rot fungus Armillaria mellea and to determine the changes produced in the plant metabolome. Plants inoculated with two AMF, Rhizoglomus irregulare and a native AMF isolate from loquat soils, were infected with Armillaria. Although mycorrhization failed to control the Armillaria root infection, the increased growth of infected plants following inoculation with the native mycorrhizal isolate suggests an initial tolerance towards Armillaria. Overall, metabolomics allowed highlighting the molecular basis of the improved plant growth in the presence of Armillaria following AMF colonization. In this regard, a wide and diverse metabolic response was involved in the initial tolerance to the pathogen. The AMF‐mediated elicitation altered the hormone balance and modulated the production of reactive oxygen species (mainly via the reduction of chlorophyll intermediates), possibly interfering with the reactive oxygen species (ROS) signaling cascade. A complex modulation of fucose, ADP‐glucose and UDP‐glucose, as well as the down‐accumulation of lipids and fatty acids, were observed in Armillaria‐infected plants following AMF colonization. Nonetheless, secondary metabolites directly involved in plant defense, such as DIMBOA and conjugated isoflavone phytoalexins, were also involved in the AMF‐mediated plant response to infection.
Lingua originaleEnglish
pagine (da-a)899-899
Numero di pagine1
RivistaAgronomy
Volume10
DOI
Stato di pubblicazionePubblicato - 2020

Keywords

  • arbuscular mycorrhizal fungi
  • metabolomics
  • phytoalexins
  • plant–microbe interaction

Fingerprint Entra nei temi di ricerca di 'Plant Performance and Metabolomic Profile of Loquat in Response to Mycorrhizal Inoculation, Armillaria mellea and Their Interaction'. Insieme formano una fingerprint unica.

Cita questo