17 Zhen-De Yang Yan-Juan Sun Shu-Zhong Yu Xia-Lin Zheng Journal of Animal and Plant Sciences JAPS 20152015/10/01 25 5 1393-1397 1018-7081 NA <p><em>Coloana</em><em>cinerea&nbsp;</em>Dworakowska (Homoptera: Cicadellidae) is a phloem-feeding pest on&nbsp;<em>Bischofia</em><em>javanica</em>Blume (Euphorbiales: Euphorbiaceae), which is the main species of avenue tree in the urban landscape of China. Understanding their relationship is conducive to<a id="OLE_LINK3" name="OLE_LINK3"></a>&nbsp;exploring the<a id="OLE_LINK5" name="OLE_LINK5"></a>&nbsp;coevolution of both of them&nbsp;and the effective management of insect pests. In this study,&nbsp;<a id="OLE_LINK9" name="OLE_LINK9"></a>their interaction&nbsp;was studied from a protective enzyme perspective. Results showed that Catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) activities in&nbsp;<em>B. javanica</em>&nbsp;leaves were evidently enhanced by population density, feeding duration and their interaction of&nbsp;<em>C. cinerea</em>. CAT, POD, SOD, glutathione S-transferase (GST) and amylase (AMY) in&nbsp;<em>C. cinerea</em>&nbsp;were conversely affected by foliage maturity of&nbsp;<em>B. javanica</em>, feeding duration and their interaction. These changes in physiological compositions of both&nbsp;<em>C. cinerea&nbsp;</em>and<em>&nbsp;B. javanica</em> following stress or damage suggest that they have coevolved to an adaptation against each other.</p> Landscape plant; Insect pest; Protective enzyme; Coevolution Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-190