Rhizosphere-inhabiting fungi isolated from native plants of the atacama desert affect leaf traits of chardonnay grapevines (Vitis vinifera L.).
Date
Authors
JORQUERA FONTENA, EMILIO JOSE
Fuentes-Quiroz, Alejandra
Herrera, Héctor
Ortiz, Javier
Arriagada, César A.
Jorquera-Fontena, Emilio
Fuentes-Quiroz, Alejandra
Herrera, Héctor
Ortiz, Javier
Arriagada, César A.
Jorquera-Fontena, Emilio
Authors
Date
Datos de publicación:
10.1016/j.rhisph.2023.100715
Keywords
Fungi - Gas Exchange - Oxidative Damage - Plant Growth-promoting Traits
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Abstract
Studying new alternatives for promoting plant growth is crucial to face a changing climate. This study aimed to determine the beneficial effect of fungal strains isolated from the rhizospheric soil of two native plants from the Atacama Desert on physiological leaf traits of inoculated Chardonnay grapevines. Rhizosphere fungi were isolated from Baccharis scandens and Solanum chilense and tested in vitro for plant growth-promoting traits, including indole acetic acid, phosphate solubilization, siderophore production, and polyamine production. Aspergillus niger, Microdochium bolleyi, and Westerdikeya centenaria were isolated, showing plant growth-promoting attributes and high salt tolerance in almost all tested isolates. Then, the fungi were stabilized and co-inoculated in pot-grown Chardonnay plants (Vitis vinifera L.) growing in outdoor conditions to evaluate gas exchange variables, chlorophylls (as SPAD value), water potential, proline and sugar content, and lipid peroxidation in leaves. Inoculation of the fungal strains significantly increased the photosynthesis rate, which was associated with higher mesophyll conductance and SPAD values. The co-inoculation also induced an enhanced protective condition for oxidative damage. Increased carbon assimilation resulted in higher soluble sugars and intrinsic water use efficiency in leaves without altering the water status of treated plants. Our results demonstrated the beneficial effects of co-inoculating rhizosphere-inhabiting fungi isolated from native plants from the Atacama Desert on physiological traits of Chardonnay grapevines. © 2023 Elsevier B.V., All rights reserved.
Description
Keywords
Fungi , Gas Exchange , Oxidative Damage , Plant Growth-promoting Traits
Citation
10.1016/j.rhisph.2023.100715