Elevated O-3 and TYLCV Infection Reduce the Suitability of Tomato as a Host for the Whitefly Bemisia tabaci

文献类型： 外文期刊

第一作者： Cui, Hongying

作者： Cui, Hongying;Zhang, Youjun;Cui, Hongying;Sun, Yucheng;Ge, Feng;Chen, Fajun

作者机构：

关键词： Bemisia tabaci;elevated O-3;jasmonic acid;salicylic acid;Tomato yellow leaf curl virus

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2016 年 17 卷 12 期

页码：

收录情况： SCI

摘要： The effects of elevated atmospheric ozone (O-3) levels on herbivorous insects have been well studied, but little is known about the combined effects of elevated O-3 and virus infection on herbivorous insect performance. Using open-top chambers in the field, we determined the effects of elevated O-3 and Tomato yellow leaf curl virus (TYLCV) infection on wild-type (Wt) tomato and 35S tomato (jasmonic acid (JA) defense-enhanced genotype) in association with whitefly, Bemisia tabaci Gennadius biotype B. Elevated O-3 and TYLCV infection, alone and in combination, significantly reduced the contents of soluble sugars and free amino acids, increased the contents of total phenolics and condensed tannins, and increased salicylic acid (SA) content and the expression of SA-related genes in leaves. The JA signaling pathway was upregulated by elevated O-3, but downregulated by TYLCV infection and O-3 + TYLCV infection. Regardless of plant genotype, elevated O-3, TYLCV infection, or O-3 + TYLCV infection significantly decreased B. tabaci fecundity and abundance. These results suggest that elevated O-3 and TYLCV infection, alone and in combination, reduce the nutrients available for B. tabaci, increase SA content and SA-related gene expression, and increase secondary metabolites, resulting in decreases in fecundity and abundance of B. tabaci in both tomato genotypes.

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