Parallel transcriptome profiling of soybean cyst nematodes (SCN) during a three-way interaction among SCN, soybean aphids, and soybean

SCN gene expression in soybean roots is amplified under combined SCN + SBA infestation, with resistance-breaking patterns at 5 DPI and dormancy-linked gene flux at 30 DPI.

• Why it matters: Yield losses from SCN are worsened by concurrent soybean aphids, yet in planta SCN expression dynamics during this three-way interaction remain poorly defined.
• What they did: The study profiled SCN transcriptomes in roots of susceptible PI 518671 and resistant MN1806CN at 5 and 30 days post-infestation under SCN alone versus SCN + SBA, identifying 1829 differentially expressed genes/transcripts.
• The result: In MN1806CN, SCN + SBA showed elevated significant expression, while enrichment mapped 5 DPI changes to resistance breakage and 30 DPI changes to nematode dormancy, supporting molecular breeding inputs.

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