Comparative analysis of sugarcane root transcriptome in response to the plant growth-promoting Burkholderia anthina MYSP113

PLoS One. 2020 Apr 8;15(4):e0231206. doi: 10.1371/journal.pone.0231206. eCollection 2020.

Abstract

The diazotrophic Burkholderia anthina MYSP113 is a vital plant growth-promoting bacteria and sugarcane root association. The present study based on a detailed analysis of sugarcane root transcriptome by using the HiSeq-Illumina platform in response to the strain MYSP113. The bacterium was initially isolated from the rhizosphere of sugarcane. To better understand biological, cellular, and molecular mechanisms, a de novo transcriptomic assembly of sugarcane root was performed. HiSeq-Illumina platformwas employed for the sequencing of an overall of 16 libraries at a 2×100 bp configuration. Differentially expressed genes (DEGs) analysis identified altered gene expression in 370 genes (total of 199 up-regulated genes and 171 down-regulated genes). Deciphering the huge datasets, concerning the functioning and production of biological systems, a high throughput genome sequencing analysis was attempted with Gene ontology functional analyses and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. The report revealed a total of 148930 unigenes. 70414 (47.28%) of them were annotated successfully to Gene Ontology (GO) terms. 774 at 45 days, 4985 of 30 days and 15 days of 6846 terms were significantly regulated. GO analysis revealed that many genes involved in the metabolic, oxidation-reduction process and biological regulatory processes in response to strain MYSP113 and significantly enriched as compare to the control. Moreover, KEGG enriched results show that differentially expressed genes were classified into different pathway categories involved in various processes, such as nitrogen metabolism, plant hormone signal transduction, etc. The sample correlation analyses could help examine the similarity at the gene expression level. The reliability of the observed differential gene expression patterns was validated with quantitative real-time PCR (qRT-PCR). Additionally, plant enzymes activities such as peroxidase and superoxide dismutase were significantly increased in plant roots after the inoculation of strain MYSP113. The results of the research may help in understanding the plant growth-promoting rhizobacteria and plant interaction.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / analysis
  • Burkholderia / physiology*
  • Cluster Analysis
  • Gene Expression Regulation, Plant
  • Genes, Plant
  • Metabolic Networks and Pathways / genetics
  • Plant Roots / genetics*
  • Plant Roots / microbiology
  • RNA, Plant / genetics
  • Real-Time Polymerase Chain Reaction
  • Saccharum / growth & development*
  • Saccharum / microbiology*
  • Sequence Analysis, RNA
  • Transcriptome*

Substances

  • Antioxidants
  • RNA, Plant

Supplementary concepts

  • Burkholderia anthina

Grants and funding

This work was supported by grants from the, National Natural Science Foundation of China (Grant Numbers 31471449 to YRL, Grant Numbers 31701489 and 31801288 to CNL), Natural Science Foundation of Guangxi Province (Grant Numbers 2016GXNSFAA380126 and 2019GXNSFDA185004 to CNL), Guangxi Innovation Term of Modern Agriculture Technology (Grant Numbers gjnytxgxcxtd-03-01 to YRL), Guangxi R&D Program (Grant Numbers GKG1598006-1-1 and GuiKeAD17195100 to YRL). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.