Piriformospora indica, a cultivable root endophyte with multiple biotechnological applications

Oelmüller, Ralf; Sherameti, Irena; Tripathi, Swati; Varma, Ajit

doi:10.1007/s13199-009-0009-y

Cited by 240 publications

(141 citation statements)

References 154 publications

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“…So far, there are no plant species known that cannot be colonized by P. indica (Klute 2011), the 145 tested until 2009 ) referring exclusively to experimental approaches. Oelmüller et al (2009) report on a vast geographical distribution of P. indica from Asia, South America and Australia. We cannot verify such distribution patterns from original publications.…”

Section: Transitions In Trophic Stages and Experimental Host Rangementioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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A historical retrospect and a taxonomic update will deal with Sebacina s.l. and s.str., Craterocolla, Efibulobasidium, Serendipita, Trem ell odendron, Trem ell oscypha, Tremellostereum, and Piriformospora, the Sebacinaceae, and the Sebacinales. Phylogenetic hypotheses for the order and subordinal taxa are discussed, including environmental sequence taxa. The cryptic biodiversity in Sebacinales is extensive but mostly unresolved with respect to the species involved.

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Section: Transitions In Trophic Stages and Experimental Host Rangementioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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“…The root endophytic fungus P. indica is able to enhance the biomass production of many different plant species under various conditions, increases plant resistance and tolerance to biotic and abiotic stresses, but its ability to support plant nutrition is a matter of debate (Oelmüller et al 2009;Franken 2012). Concerning phosphorus, most reports show that the fungus is able to promote plant growth irrespective of P i concentrations in fertilizers (Franken 2012 is, however, possible that the fungus is able to release P from mineralized or organic sources which are unavailable for the plant, transforming them into a soluble form as orthophosphate which could be taken up by both, the roots and the root-colonizing endophyte.…”

Section: Discussionmentioning

confidence: 99%

Phosphate utilization by the fungal root endophyte Piriformospora indica

et al. 2015

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Background and aim The root endophytic fungus Piriformospora indica increases plant resistance and tolerance to stress and promotes plant growth, but its ability to support plant nutrition is still controversially discussed. Irrespective of a potential nutrient transport towards the plant, the fungus might release P from sources unavailable for plant usage by transformation to available forms. Methods To test this hypothesis, sterile solid and liquid in vitro cultures of P. indica supplied with different organic and inorganic P sources were established. Cultures were investigated for growth, solubilised P, enzyme activities, RNA accumulation of the four genes encoding phosphate transporters and the two genes for acid phosphatases and phytases respectively found in P. indica genome, and for pH values in the media. Results P. indica growth was higher in the presence of inorganic P than in organic P sources. Significant amounts of P were solubilised by P. indica from Ca 3 (PO 4 ) 2 and rock phosphate. However, no relevant intra-or extracellular enzymatic activity was detected despite RNA accumulation of related genes. In general, the genes were all repressed by higher amounts of inorganic P and were expressed the most when the fungus received phytate. We observed a decrease in medium pH in the presence of P. indica irrespective of the P source. Conclusions P. indica is able to solubilise phosphate from inorganic, but not from organic P sources. This P solubilisation is not due to enzymatic activities but rather to the lowering of the medium pH.

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“…3 Also growth of the two ERF insertion lines is stimulated by the beneficial fungus, however the stimulatory effect is less compared to wild type seedlings (Fig. 2).…”

Section: Erf9mentioning

confidence: 93%

“…The fungus forms pear-shaped spores which accumulate in the roots as well as on the root surface, stimulates growth and seed production, confers resistance against abiotic (water and salt) stress and protects the plant against pathogen infections. [2][3][4] Mutants impaired in ET perception, signal transduction or ET-targeted transcription factors were examined in Camehl et al 1 Growth of ETR1, EIN2 and EIN3/EIL1 deletion mutants was not promoted or even inhibited by P. indica. Overexpression of ERF1 promoted defence responses in the presence of the fungus and abolished the benefits for the plants.…”

Section: Introductionmentioning

confidence: 99%