Promotion of plant growth by an auxin-producing isolate of the yeast Williopsis saturnus endophytic in maize (Zea mays L.) roots

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

“…Williopsis saturnus, an endophytic yeast, in maize roots could produce IAA. 55 The introduction of W. saturnus to maize seedlings enhanced the growth of maize plants as indicated by increases in the dry weights and lengths of roots and shoots. 52 We previously showed that U. esculenta (strain JYC070) exhibited high IAA production, whereas Hannaella coprosmaensis (strain YL-10) produced relatively low IAA in all conditions.…”

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

“…Yeasts are unicellular fungi that can also be found in the rhizosphere of plants, but in smaller numbers compared to bacteria and filamentous fungi; however, little information is known about their function in this ecosystem. A wide variety of yeasts present characteristics that promote plant growth (Cloete et al, 2009;Limtong et al, 2014;Nutaratat et al, 2014) via the control of plant pathogens (El-Tarabily, 2004;El-Tarabily and Sivasithamparam, 2006;Korres et al, 2011;Rosa et al, 2010), the production of phytohormones (Nassar et al, 2005), the solubilization of phosphate (Hesham and Mohamed, 2011;Falih and Wainwright, 1995;Mirabal Alonso et al, 2008;Mundra et al, 2011), the oxidation and mineralization of nitrogen and sulfur compounds (Falih and Wainwright, 1995), the production of siderophores (Sansone et al, 2005) and the stimulation of root colonization by mycorrhizal fungi (Mirabal Alonso et al, 2008;Vassileva et al, 2000).…”

“…The auxin group is a class of plant hormones known to stimulate responses in plants both quickly and in the long term. Indole acetic acid is a type of auxin produced by many groups of microorganisms, including bacteria (Ahmed and Hasnain, 2010;Tsavkelova et al, 2007), filamentous fungi (Manici et al, 2014;Hasan, 2002;Sirrenberg et al, 2007), and yeasts (Nassar et al, 2005).…”

Yamadazyma endophytica f.a. sp. nov., an ascomycetous yeast species isolated from leaf tissue

“…Endophytic yeasts that have been found in plant leaves include both ascomycetous yeasts such as Candida guilliermondii, Candida oleophila, Candida railenensis, Cyberlindnera saturnus, Diutina siamensis, Metschnikowia pulcherrima, Wickerhamomyces anomalus and Wickerhamiella siamensis (Nassar et al, 2005;Isaeva et al, 2010;Rodríguez et al, 2011;Oliveira et al, 2012;Khunnamwong et al, 2014Khunnamwong et al, , 2015a (Gai et al, 2009;Abdel-Motaal et al, 2009;Isaeva et al, 2010;Khan et al, 2012;Akhtyamova & Sattarova, 2013;Khunnamwong et al, 2015b;Solis et al, 2015).…”