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An overview of the transcriptional responses of two tolerant and susceptible sugarcane cultivars to borer (Diatraea saccharalis) infestation

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Abstract

Diatraea saccharalis constitutes a threat to the sugarcane productivity, and obtaining borer tolerant cultivars is an alternative method of control. Although there are studies about the relationship between the interaction of D. saccharalis with sugarcane, little is known about the molecular and genomic basis of defense mechanisms that confer tolerance to sugarcane cultivars. Here, we analyzed the transcriptional profile of two sugarcane cultivars in response to borer attack, RB867515 and SP80-3280, which are considered tolerant and sensitive to the borer attack, respectively. A sugarcane genome and transcriptome were used for read mapping. Differentially expressed transcripts and genes were identified and termed to as DETs and DEGs, according to the sugarcane database adopted. A total of 745 DETs and 416 DEGs were identified (log2|ratio| > 0.81; FDR corrected P value ≤ 0.01) after borer infestation. Following annotation of up- and down-regulated DETs and DEGs by similarity searches, the sugarcane cultivars demonstrated an up-regulation of jasmonic acid (JA), ethylene (ET), and defense protein genes, as well as a down-regulation of pathways involved in photosynthesis and energy metabolism. The expression analysis also highlighted that RB867515 cultivar is possibly more transcriptionally activated after 12 h from infestation than SP80-3280, which could imply in quicker responses by probably triggering more defense-related genes and mediating metabolic pathways to cope with borer attack.

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Data availability

The RNA-Seq raw data are available at sequence read archive (SRA) (https://www.ncbi.nlm.nih.gov/sra), and this study was registered with the ID SRP243494 and BioProject ID PRJNA602327. The RNA-seq data of RB867515 (BioSample ID SAMN13892657) were registered with the following accession numbers: SRR10917298, SRR10917297, SRR10917294, SRR10917293, SRR10917292, and SRR10917291. The RNA-seq data of SP80-3280 (BioSample ID SAMN13892658) were registered with the following accession numbers: SRR10917290, SRR10917289, SRR10917288, SRR10917287, SRR10917296, and SRR10917295.

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Acknowledgments

The authors would like to thank the Núcleo de Análise de Biomoléculas (NuBioMol) and Sugarcane Breeding Program, Universidade Federal de Viçosa, MG, Brazil, for providing the facilities necessary for execution of the experiments.

Funding

This work was funded by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG).

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USM and PMPV analyzed data and wrote the manuscript. PMPV, CEV, ACT, and MHPB planned and designed the research. USM, PMPV, CEV, ACT, and MF conducted the experiments. LAP and MHPB coordinated the research. All authors reviewed the manuscript.

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Correspondence to Pedro Marcus Pereira Vidigal.

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The authors declare that they have no conflict of interest.

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de Mello, U.S., Vidigal, P.M.P., Vital, C.E. et al. An overview of the transcriptional responses of two tolerant and susceptible sugarcane cultivars to borer (Diatraea saccharalis) infestation. Funct Integr Genomics 20, 839–855 (2020). https://doi.org/10.1007/s10142-020-00755-8

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  • DOI: https://doi.org/10.1007/s10142-020-00755-8

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