In the arbuscular mycorrhizal fungal interaction with plants, the fungal partner promotes nutrient acquisition in exchange for some sugar and fatty acids from host plants. This exchange occurs at the symbiotic interface in the plant cortical cells where fungal hyphae form special branched structure called arbuscules, which are enveloped by host-derived peri-arbuscular membranes (PAM). Two ultrastructural studies by Ivanov et al. (2019) and Roth et al. (2019) analysed arbuscular structures in plant cortical cells using high resolution transmission electron microscopy tomography and three dimensional structural reconstruction. Both studies revealed vesicular and tubular compartments within the matrix of the peri-arbuscular space, irrespective of the plant-fungal system studied, as well as novel tubular structure originating from the fungal cells and present exclusively in the arbuscules. The functional relevance of these structures is yet to be confirmed. (Summary by Mugdha Sabale). Nature Plants 10.1038/s41477-019-0365-4 and 10.1038/s41477-019-0364-5
You might also like
Fungal community assembly in drought-stressed sorghum shows stochasticity, selection, and universal ecological dynamics (Nature Comms)
The ARM domain of ARMADILLO-REPEAT KINESIS 1 is not required for microtubule catastrophe but can negatively regulate NIMA-RELATED KINASE 6 in Arabidopsis thaliana
A smut fungus of Brassicaceae plants uses conserved and unique strategies to manipulate perennial hosts ($) New Phytol.
To the VIKtor goes the Spoils: The Phytophthora infestans Effector Pi17316 Manipulates the Host MAP3K VIK to Promote Disease Susceptibility in Potato (OA)