数字农科院2.0

Protein Elicitor Peat1 Enhanced Resistance A.gainst Aphid (Sitobion Avenae) I n Wheat

文献类型： 外文期刊

作者： Yang, Xiufen;Li, Lin;Francis, Frederic;Qiu, Dewen;Li, Lin;Wang, Shuangchao

作者机构：

关键词： PeaT1; wheat; aphid resistance; surface structure; salicylic acid; jasmonic acid

期刊名称： PEST MANAGEMENT SCIENCE

ISSN： 1526-498X

年卷期： 2019 年

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摘要： BACKGROUND Sitobion avenae, a dominant aphid in wheat that causes huge annual losses in agriculture, is mainly controlled using chemical pesticides. In this study, we investigated a protein elicitor, PeaT, for its induction of the defense response in wheat against Sitobion avenae. RESULTS Intrinsic rates of increase in second and third generations of S. avenae decreased in the PeaT1 (second generation 0.31 +/- 0.01, third generation 0.28 +/- 0.01) treatment compared with controls (second generation 0.28 +/- 0.01, third generation 0.26 +/- 0.01). S. avenae preferred to colonize control rather than PeaT1-treated wheat seedlings in a host selection test. PeaT1-treated wheat leaves possessed more trichomes and wax that formed a disadvantageous surface environment for S. avenae. Both salicylic acid (SA) and jasmonic acid (JA) accumulated significantly in PeaT1-treated wheat seedlings. CONCLUSION These results showed that PeaT1 modified physical surface structures in wheat to reduce reproduction and deter colonization by S. avenae. SA and JA were involved in the induced physical defense process. This study provided evidence for use of PeaT1 as a 'vaccine' to protect wheat from Sitobion avenae. (c) 2019 Society of Chemical Industry

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