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Genomic assessment of Stenotrophomonas indicatrix for improved sunflower plant

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Abstract

Diverse agriculturally important microbes have been studied with known potential in plant growth promotion. Providing several opportunities, Stenotrophomonas species are characterized as promising plant enhancers, inducers, and protectors against environmental stressors. The S. indicatrix BOVIS40 isolated from the sunflower root endosphere possessed unique features, as genome insights into the Stenotrophomonas species isolated from oilseed crops in Southern Africa have not been reported. Plant growth-promotion screening and genome analysis of S. indicatrix BOVIS40 were presented in this study. The genomic information reveals various genes underlining plant growth promotion and resistance to environmental stressors. The genome of S. indicatrix BOVIS40 harbors genes involved in the degradation and biotransformation of organic molecules. Also, other genes involved in biofilm production, chemotaxis, and flagellation that facilitate bacterial colonization in the root endosphere and phytohormone genes that modulate root development and stress response in plants were detected in strain BOVIS40. IAA activity of the bacterial strain may be a factor responsible for root formation. A measurable approach to the S. indicatrix BOVIS40 lifestyle can strategically provide several opportunities in their use as bioinoculants in developing environmentally friendly agriculture sustainably. The findings presented here provide insights into the genomic functions of S. indicatrix BOVIS40, which has set a foundation for future comparative studies for a better understanding of the synergism among microbes inhabiting plant endosphere. Hence, highlighting the potential of S. indicatrix BOVIS40 upon inoculation under greenhouse experiment, thus suggesting its application in enhancing plant and soil health sustainably.

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Availability of data and materials

From the NCBI database output, the Bioproject number is PRJNA706595, BioSample number is SAMN18138830, while the whole genome accession number is JAGENA000000000.

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Not applicable.

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Acknowledgements

BSA thanked the National Research Foundation of South Africa and The World Academy of Science (TWAS) for NRF-TWAS African Renaissance Doctoral scholarship (Grant UID: 116100). ASA is grateful to North-West University for a postdoctoral fellowship award. OOB acknowledges the National Research Foundation of South Africa for the grants (Grant numbers: 123634; 132595), supporting research in her laboratory.

Funding

This study was funded by the National Research Foundation of South Africa (Grant numbers: 123634; 132595).

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Authors and Affiliations

  1. Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa

    Bartholomew Saanu Adeleke, Ayansina Segun Ayangbenro & Olubukola Oluranti Babalola

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  1. Bartholomew Saanu Adeleke
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  2. Ayansina Segun Ayangbenro
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  3. Olubukola Oluranti Babalola
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Contributions

BSA managed the literature searches, carried out the laboratory work, interpreted the results, and wrote the manuscript’s first draft. ASA assisted in genome analysis, reviewed the drafts, and proofread the manuscript while OOB, the principal investigator, provided academic input, thoroughly critiqued the manuscript, proofread the draft, and secured funds for the research. All authors approved the article for publication.

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Correspondence to Olubukola Oluranti Babalola.

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Communicated by Michael Polymenis.

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Adeleke, B.S., Ayangbenro, A.S. & Babalola, O.O. Genomic assessment of Stenotrophomonas indicatrix for improved sunflower plant. Curr Genet 67, 891–907 (2021). https://doi.org/10.1007/s00294-021-01199-8

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