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. 2021 Jan 4;16(1):e0244856. doi: 10.1371/journal.pone.0244856

Fig 7. Upregulated expression of genes involved in nitrogen and potassium metabolism.

Fig 7

(A) Nitrogen metabolism gene expression profile based on RNA-seq data. (B) Validation of the nitrogen metabolism gene expression by qRT-RCR. (C) Nitrogen content in the rhizosphere soil of maize seedlings in the CK and 50 mg/L graphene treatment. Values indicate mean ± SE (n = 5). p < 0.05 obtained by the Student’s t-test. (D) Expression profile of potassium metabolism genes based on RNA-seq data. (E) Validation of the potassium metabolism gene expression by qRT-RCR. (F) Potassium content in the rhizosphere soil of maize seedlings in the CK and 50 mg/L graphene treatment. Values indicate mean ± SE (n = 5). p < 0.05 obtained by the Student’s t-test.