Characterization of three endophytic, indole-3-acetic acid-producing yeasts occurring in Populus trees

Xu, Gang; Glawe, Dean A.; Doty, Sharon L.

doi:10.1016/j.mycres.2009.06.001

Cited by 121 publications

(76 citation statements)

References 32 publications

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“…has been reported in native environments of the Northern Hemisphere Taghavi et al, 2009;Xin et al, 2009). We have also confirmed the presence of endophytic bacteria and fungi in the bare-root nursery of P. nigra and P. trichocarpa at the INTA Experimental Station in Bariloche (Mestre et al 2014a).…”

Section: Introductionsupporting

confidence: 85%

Natives helping foreigners?: The effect of inoculation of poplar with patagonian beneficial microorganisms

Mestre

Pastorino

Aparicio³

et al. 2017

J. Soil Sci. Plant Nutr.

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Inoculation with microorganisms represents an opportunity to enhance tree production, directly affecting plant growth or survival at planting. The aim of the present study was to evaluate the effect of mixed inoculation with native mycorrhizae, two yeasts and one endophytic bacterium, on the growth of two poplar clones commonly used in Patagonia, Argentina. Yeasts and bacteria were selected base on their ability to produce IAA and siderophores, as well as P solubilization in-vitro. A greenhouse trial was performed using hardwood cuttings of Populus nigra 'Italica' and Populus trichocarpa 'SP1456'. Only yeasts modified growth traits, in a host-related response: Tausonia pullulans reduced the root/shoot ratio in P. nigra, and Candida saitoana and increased shoot dry biomass in P. trichocarpa. All plants presented arbuscular mycorrhizal colonization but ectomycorrhizae were absent. Two types of arbuscular mycorrhizal colonization were observed, one of them similar to Glomus tenue. We found a tendency for a higher percentage of arbuscular mycorrhizal colonization when plants were inoculated with T. pullulans. The used of native yeast along with mycorrhizal inocula appears to be a promising tool to improve poplar forestry.

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Section: Introductionsupporting

confidence: 85%

Natives helping foreigners?: The effect of inoculation of poplar with patagonian beneficial microorganisms

Mestre

Pastorino

Aparicio³

et al. 2017

J. Soil Sci. Plant Nutr.

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“…mucilaginosa and T. asahii. Xin et al (2009) obtained endophytic strains of Rh. mucilaginosa from Populus trees and evaluated their ability to produce IAA.…”

Section: Discussionmentioning

confidence: 99%

Temperature, pH and carbon source affect drastically indole acetic acid production of plant growth promoting yeasts

Scarcella

Bizarria

Bastos

et al. 2017

Braz. J. Chem. Eng.

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-Rhizosphere and phylloplane yeasts are able to produce phytohormones, acting as potential plant growth promoters. The aim of this study was to analyze the production of indole acetic acid (IAA) by yeasts using variations in the culture conditions. The yeasts evaluated were Rhodotorula mucilaginosa and Trichosporon asahii, which were cultivated in a potato broth medium with 20 g/L of glucose or sucrose as the carbon source. The cultivation was carried out at 22°C, 25°C or 30°C, and the initial pH was adjusted to 3.0, 4.5 or 6.0. The cultures were analyzed using a colorimetric technique with Salkowski reagent. The cell count was determined in all of the conditions. The results for T. asahii showed that IAA production with sucrose was superior at pH 6.0, and that with glucose was superior at pH 4.5. These results indicate an association between the carbon source and medium pH. Rh. mucilaginosa (2F32) presented a high IAA production when compared with T. asahii (3S44 and 4C06) or even with other microorganisms referenced in the literature. The highest production (0.655 g/L) was obtained at pH 6.0 with glucose as the carbon source. Variations in the culture conditions did not affect the cell growth of the yeasts.

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“…Limtong and Koowadjanakul 9 collected yeasts from the phyllosphere of various plant species in Thailand and observed that approximately 37.7% of the investigated yeast strains produced IAA. Xin et al 27 isolated 3 endophytic yeasts from Populus trees, which all produced IAA when incubated with Trp. These studies suggest that IAA production is common in several types of yeast.…”

Section: Iaa Biosynthetic Pathwaysmentioning

confidence: 99%

Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Wei

Chen

et al. 2015

Plant Signaling & Behavior

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142

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Characterization of three endophytic, indole-3-acetic acid-producing yeasts occurring in Populus trees

Cited by 121 publications

References 32 publications

Natives helping foreigners?: The effect of inoculation of poplar with patagonian beneficial microorganisms

Natives helping foreigners?: The effect of inoculation of poplar with patagonian beneficial microorganisms

Temperature, pH and carbon source affect drastically indole acetic acid production of plant growth promoting yeasts

Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

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