Correction: Bioactivity-guided isolation of rosmarinic acid as the principle bioactive compound from the butanol extract of Isodon rugosus against the pea aphid, Acyrthosiphon pisum.

[This corrects the article DOI: 10.1371/journal.pone.0215048.].

In the title of this article, the word “principle” should be “principal.” The correct title is: Bioactivity-guided isolation of rosmarinic acid as the principal bioactive compound from the butanol extract of Isodon rugosus against the pea aphid, Acyrthosiphon pisum. The correct citation is: Khan S, Taning CNT, Bonneure E, Mangelinckx S, Smagghe G, Ahmad R, et al. (2019) Bioactivity-guided isolation of rosmarinic acid as the principal bioactive compound from the butanol extract of Isodon rugosus against the pea aphid, Acyrthosiphon pisum. PLoS ONE 14(6): e0215048. https://doi.org/10.1371/journal.pone.0215048