Record ID No. |
6341 |
Author(s) |
Sen D.*, Paul K., Saha C., Mukherjee G., Nag M., Ghosh S., Das A., Seal A. and Tripathy S. , 2019 |
Affiliation |
*Structural Biology and Bioinformatics Division, CSIR Indian Institute of Chemical Biology, Kolkata, India. |
Title |
A Unique life-strategy of an endophytic yeast Rhodotorula mucilaginosa JGTA-S1-a comparative genomics viewpoint. |
Source. Vol.(no):Page |
DNA Research, 26(2): 131-146. |
Categories |
Mycorrhiza General Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Plant growth promoting fungi |
Host |
Typha angustifolia |
Organism |
Rhodotorula mucilaginosa |
Country |
India |
Abstracts |
Endophytic yeasts of genus Rhodotorula are gaining importance for their ability to improve plant growth. The nature of their interaction with plants, however, remains unknown. Rhodotorula mucilaginosa JGTA-S1 was isolated as an endophyte of Typha angustifolia and promoted growth in the host. To investigate the life-strategy of the yeast from a genomics perspective, we used Illumina and Oxford Nanopore reads to generate a high-quality annotated draft assembly of JGTA-S1 and compared its genome to three other Rhodotorula yeasts and the close relative Rhodosporidium toruloides. JGTA-S1 is a haploid yeast possessing several genes potentially facilitating its endophytic lifestyle such as those responsible for solubilizing phosphate and producing phytohormones. An intact mating-locus in JGTA-S1 raised the possibility of a yet unknown sexual reproductive cycle in Rhodotorula yeasts. Additionally, JGTA-S1 had functional anti-freezing genes and was also unique in lacking a functional nitrate-assimilation pathway—a feature that is associated with obligate biotrophs. Nitrogen-fixing endobacteria were found within JGTA-S1 that may circumvent this defective N-metabolism. JGTA-S1 genome data coupled with experimental evidence give us an insight into the nature of its beneficial interaction with plants. |