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Defense against Pieris rapae in cabbage plants induced by Bemisia tabaci biotype B

文献类型： 外文期刊

作者： Zhang, Shi-Ze 2 ; Huang, Hong 1 ; Shan, Hong-Wei 1 ; Zhang, Fan 3 ; Wan, Fang-Hao; Liu, Tong-Xian 1 ;

作者机构： 1.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Minist Agr, Yangling 712100, Shaanxi, Peoples R China

2.Northwest A&F Univ, Key Lab Northwest Loess Plateau Crop Pest Managem, Minist Agr, Yangling 712100, Shaanxi, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Plant & En

关键词： antioxidative enzyme;inducible defense;interspecific competition;Hemiptera;Aleyrodidae;Lepidoptera;Pieridae

期刊名称：ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA （ 影响因子：2.25； 五年影响因子：2.184 ）

ISSN： 0013-8703

年卷期： 2013 年 147 卷 3 期

页码：

收录情况： SCI

摘要： Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) and Pieris rapae L. (Lepidoptera: Pieridae) are serious pests of vegetables, that can occur simultaneously on a single cabbage plant [Brassica oleracea var. capitata L. (Brassicaceae)]. We determined whether pre-feeding or infestation by B.tabaci on cabbage could induce physiological and biochemical responses of the plant against P.rapae. Developmental time, length, and weight of immature P.rapae, and defense-related plant compounds (SOD, superoxide dismutase; POD, peroxidase; CAT, catalase; APX, ascorbate peroxidase) were measured. Development of P.rapae larvae was 21% slower on B.tabaci-pre-infested plants than on plants without B.tabaci infestation. When feeding on B.tabaci-pre-infested plants, 22% of P.rapae larvae pupated as compared with 83% on B.tabaci-free plants. Weights of P.rapae from first to fourth instars that fed on B.tabaci-pre-infested plants were also reduced, whereas those of fifth instars and pupae were not. Similarly, body length of P.rapae from first to fourth instars was affected by B.tabaci pre-infestation, whereas that of the fifth instars was not. Peroxidase and APX activities of the B.tabaci-pre-infested plants increased more than SOD and CAT. Peroxidase and SOD activities of B.tabaci and P.rapae co-infested plants increased as compared with those of P.rapae-infested plants; however, CAT and APX activities were not different between B.tabaci- and P.rapae-infested plants. These results showed that B.tabaci infestation had a negative effect on P.rapae when they occurred simultaneously on the same host plant. The implications of the induced plant changes on the herbivore are discussed.

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