@misc{10481/59340,
year = {2019},
month = {11},
url = {http://hdl.handle.net/10481/59340},
abstract = {The microbiological interactions of the roots of non-photosynthetic plants in South America
have been scarcely explored. This study analyzes culturable fungal diversity associated with the
mycoheterotrophic plant Arachnitis uniflora Phil. (Corsiaceae) in southern Chile, growing in two different
understoreys of native (Nothofagus-dominated) and mixed forest (native, Cupressus sempervirens, and
Pinus radiata). Rhizospheric and endophytic fungi were isolated, cultured, and purified to identify
microorganisms associated with A. uniflora roots. We showed the different fungi associated with
the plant, and that these distributions are influenced by the sampling site. We isolated 410 fungal
strains (144 endophytic and 266 from the rhizosphere). We identified 13 operative taxonomical
units from plants sampled in the mixed forest, while 15 were from the native forest. Rhizospheric
microorganisms were mainly related to Penicillium spp., whereas some pathogenic and saprophytic
strains were more frequent inside the roots. Our results have also shown that the fungal strains are
weak for phosphate solubilization, but other pathways such as organic acid exudation and indole
acetic acid production can be considered as major mechanisms to stimulate plant growth. Our results
point to new fungal associates of A. uniflora plants reported in Andean ecosystems, identifying new
beneficial endophytic fungi associated with roots of this fully mycoheterotrophic plant.},
organization = {This research was funded by Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT),
grant number 1170931 to C.A. (Cesar Arriagada) and Fondo De Fomento al Desarrollo Científico y Tecnológico
(FONDECYT), grant number VIU17E0185 to H.H. (Hector Herrera).},
publisher = {MDPI},
keywords = {Endophytes},
keywords = {Mycoheterotrophy},
keywords = {Mycorrhizal fungi},
keywords = {Organic acids},
keywords = {Soil fungi},
keywords = {Symbiosis},
title = {Root-Associated Fungal Communities in Two Populations of the Fully Mycoheterotrophic Plant Arachnitis uniflora Phil. (Corsiaceae) in Southern Chile},
doi = {10.3390/microorganisms7120586},
author = {Herrera, Héctor and Soto, Javiera and Bashan, Luz E. de and Sampedro Quesada, María Inmaculada and Arriagada, Cesar},
}