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Plant viruses can modify the performance and behavior of insect vectors to maximize their transmission rates. Whether viruses can evolve to mediate their insect vectors' interspecific competition is poorly understood. Here, we used two vectors of tomato zonate spot virus (TZSV), one native species (Thrips palmi) and one exotic species (Frankliniella occidentalis), to investigate this in laboratory and field experiments. TZSV infection increased the population growth of its insect vectors when the thrips species were isolated from one another. When both species coexisted, F. occidentalis displaced T. palmi on both TZSV-infected and uninfected plants. However, on TZSV-infected plant, F. occidentalis completely displaced T. palmi more rapidly (within 14 days) than on uninfected plants. Our results also revealed that reproductive interference occurred between the two thrips species, whereas TZSV-infected pepper significantly decreased the reproductive interference of T. palmi to F. occidentalis. When F. occidentalis and T. palmi co-occurred in Jinning County, Yunnan Province, we found a rising trend of natural proportions of F. occidentalis in the TZSV-infected pepper fields, suggesting that TZSV-infected pepper enhanced the competitive advantage of F. occidentalis over T. palmi in the field. Together, our findings demonstrate a plant virus that plays an important role in the competitive displacement of its insect vectors. [ABSTRACT FROM AUTHOR]

• Water extract from cbFeD contains hundreds of chemicals which enriched in organic acid and its derivatives, flavone, amino acid derivatives, nucleotide and its derivatives, carbohydrates etc. • Water extract of cbFeD showed hepatoprotective activities and attenuated liver fibrogenesis against carbon tetrachloride (CCl4)-induced chronic liver injury. • cbFeD suppressed the intrahepatic recruitment of inflammatory cells and inhibited the activation of hepatic stellate cells (HSCs). The root of Codonopis bulleynana Forest ex Diels (cbFeD), a tonic food widely used in Yunnan Province of China, was found to have a wide range of pharmacological effects. The present study was designed to investigate the anti-fibrotic effect of water extracts of cbFeD in chronic liver injury mice model induced by carbon tetrachloride (CCl 4) and to explore its underlying mechanisms. Phytochemical analysis revealed multiple components were present in the water extract of cbFeD and the compounds were mostly enriched in organic acid and its derivatives, flavone, amino acid derivatives, nucleotide and its derivatives, carbohydrates etc. Treatment with cbFeD significantly attenuated liver injury and fibrosis in CCl 4 -administered mice evidenced by improved liver histology, ameliorated apoptosis of hepatocytes, and decreased transaminase levels in the serum. Decreased activities of superoxide dismutase (SOD) and catalase (CAT) were markedly reversed upon treatment with cbFeD while levels of malondialdehyde (MDA) and glutathione (GSH) were significantly restored towards normal values. cbFeD also suppressed intrahepatic inflammatory cell infiltration and Kupffer cell activation. Furthermore, our study revealed an inhibitory effect of cbFeD on hepatic stellate cells (HSCs) activation both in vitro and in vivo. In conclusion, cbFeD could exert a protective role against liver fibrosis in mice model induced by CCl 4 that is comparable to the positive control silymarin and might be developed into a promising anti-fibrotic drug. [ABSTRACT FROM AUTHOR]