Isolation and characterization of resident yeasts from the phylloplane of Arabidopsis thaliana

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Wang , K , Sipilä , T P & Overmyer , K L 2016 , ' Isolation and characterization of resident yeasts from the phylloplane of Arabidopsis thaliana ' , Scientific Reports , vol. 6 , 39403 . https://doi.org/10.1038/srep39403

Title: Isolation and characterization of resident yeasts from the phylloplane of Arabidopsis thaliana
Author: Wang, Kai; Sipilä, Timo Petteri; Overmyer, Kirk Loren
Contributor: University of Helsinki, Biosciences
University of Helsinki, Biosciences
University of Helsinki, Biosciences
Date: 2016-12
Language: eng
Number of pages: 13
Belongs to series: Scientific Reports
ISSN: 2045-2322
URI: http://hdl.handle.net/10138/174350
Abstract: The genetic model plant Arabidopsis thaliana (arabidopsis) has been instrumental to recent advances in our understanding of the molecular function of the plant immune system. However, this work has not yet included plant associated and phytopathogenic yeasts largely due to a lack of yeast species known to interact with arabidopsis. The plant phylloplane is a significant habitat for neutral-residents, plant-growth and health-promoting species, and latent-pathogenic species. However, yeast phylloplane residents of arabidopsis remain underexplored. To address this, resident yeasts from the phyllosphere of wild arabidopsis collected in field conditions have been isolated and characterized. A total of 95 yeast strains representing 23 species in 9 genera were discovered, including potentially psychrophilic and pathogenic strains. Physiological characterization revealed thermotolerance profiles, sensitivity to the arabidopsis phytoalexin camalexin, the production of indolic compounds, and the ability to activate auxin responses in planta. These results indicate a rich diversity of yeasts present in the arabidopsis phylloplane and have created culture resources and information useful in the development of model systems for arabidopsis-yeast interactions.
Subject: 1183 Plant biology, microbiology, virology
PHYTOALEXIN-DEFICIENT MUTANTS
MOLECULAR PLANT PATHOLOGY
SALICYLIC-ACID
PSEUDOMONAS-SYRINGAE
RESISTANCE
DIVERSITY
PATHOGENS
CAMALEXIN
BACTERIA
DEFENSE
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