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Protein elicitor PeaT1 enhanced resistance against aphid (Sitobion avenae) in wheat.
Pest Management Science ( IF 3.8 ) Pub Date : 2019-07-24 , DOI: 10.1002/ps.5502
Lin Li 1, 2 , Shuangchao Wang 1 , Xiufen Yang 1 , Frederic Francis 2 , Dewen Qiu 1
Affiliation  

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. © 2019 Society of Chemical Industry.

中文翻译:

蛋白激发子PeaT1增强了小麦对蚜虫(Sitobion avenae)的抗性。

背景技术小麦中的优势蚜虫Sitobion avenae主要使用化学农药来控制,该蚜虫在农业中造成巨大的年度损失。在这项研究中,我们研究了一种蛋白质诱导剂PeaT,它诱导了小麦对玉米单胞菌的防御反应。结果与对照组(第二代0.28±0.01,第三代0.26±0.01)相比,PeaT1(第二代0.31±0.01,第三代0.28±0.01)处理降低了第二和第三代葡萄球菌的内在增长率。在寄主选择试验中,S。avenae首选定植对照而不是用PeaT1处理的小麦幼苗。经PeaT1处理的小麦叶片具有更多的毛线和蜡,这对燕麦葡萄球菌形成了不利的表面环境。水杨酸(SA)和茉莉酸(JA)在PeaT1处理的小麦幼苗中均显着积累。结论这些结果表明,PeaT1修饰了小麦的物理表面结构,从而减少了繁殖并阻止了葡萄球菌的定殖。SA和JA参与了诱导的物理防御过程。这项研究提供了将PeaT1用作“疫苗”来保护小麦免受锡托比翁(Sitobion avenae)影响的证据。©2019化学工业协会。
更新日期:2019-07-24
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