Morph-molecular characterization of Meira nicotianae sp. nov., a novel basidiomycetous, anamorphic yeast-like fungus associated with growth improvement in tobacco plant.
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1 November 2022
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Morph-molecular characterization of Meira nicotianae sp. nov., a novel basidiomycetous, anamorphic yeast-like fungus associated with growth improvement in tobacco plant.
A novel yeast-like species was isolated from the rhizosphere of tobacco root collected in Guizhou province, China. Sequence
analysis of the large subunit (LSU) rDNA gene indicates that the isolate represents a novel species and most closely related
to Meira siamensis. The phylogenetic analysis based on the Internal Transcribed Spacer (ITS) rDNA gene also confirmed the
placement of the novel species within Meira. However, the novel species differs from M. siamensis by 9.1% bp difference in
the LSU rDNA sequence region and also in terms of physiological characteristics as compared to other species. This species
is proposed as M. nicotianae sp. nov. Co-incubation of M. nicotianae strain CY-1 and tobacco plantlets demonstrates that
this fungal strain can promote growth of tobacco plant. Scanning electron micrographs and other morphological illustrations
along with phylogenies are presented in this paper.