The co-existence between DSE and AMF symbionts affects plant P pools through P mineralization and solubilization processes

By I. Mónica, M. Saparrat, A. Godeas, J. Scervino. 2015

112 citations recorded by the source corpus.

Abstract The capacity of dark septate endophytes (DSE; Phialocephala turiciensis, Acephala applanata, P. glacialis and Phaeomollisia piceae ) to solubilize inorganic phosphate (P) and to mineralize the organic form was studied. We analysed the effect of DSE strains on P uptake by Trifolium repens in the presence or absence of arbuscular mycorrhizal fungi (AMF). Phosphatases were observed both in the absence of the host plant and the organic resource, showing that the P mineralization process is not induced by the enzyme substrate or the host. DSE were more efficient at mineralizing organic P. Independently of the presence of AMF, DSE increased the pool of P in the soil, with significant differences being found in P levels among the different DSE. In contrast, plant P uptake was increased by AMF. The P content of plants increased with the co-inoculation of AMF and P. turiciensis or P. piceae . We hypothesize a close relationship between DSE and AMF in relation to P availability and uptake in plants. Whereas DSE increase the pool of P in the rhizosphere, AMF are responsible for P transfer to the host, with co-colonization of plants by DSE and AMF showing a synergistic outcome.

Subfields: Pharmacology, Plant Science

View Paper: https://www.semanticscholar.org/paper/9e256992698c57e7cb61b0789e1330f5293e70aa

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Pharmacology

1. E. Terhonen
2. Fred O. Asiegbu

In Plant Science

1. K. Blumenstein
2. E. Terhonen
3. Surono
4. Andriy Kovalchuk
5. Fred O. Asiegbu
6. K. Narisawa

Citations in the corpus

• Forest Tree Microbiomes and Associated Fungal Endophytes: Functional Roles and Impact on Forest Health (2019, background): “Sieber are able to mineralize organic P in vitro [227], indicating that DSE fungi can release P from organic sources to be utilized by plants [227].”
• The dark septate endophytic fungus Phialocephala fortinii is a potential decomposer of soil organic compounds and a promoter of Asparagus officinalis growth (2017, background): “…fungi that are capable of dissolving P sources that are otherwise unavailable to plants, such as calcium phosphate (Barrow and Osuna, 2002; Della Monica et al., 2015), might be used to convert immobile inorganic phosphate into an available form that can be absorbed by plants to increase growth…”