Effects of HrpNEa on Inducing Aphid Repellency on Cucumis melo

  • GOU Zhen-hua ,
  • ZHANG Shu-ping ,
  • DONG Han-song
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  • Key Laboratory of Monitoring and Management of Plant Diseases and Insects, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China

Received date: 2009-05-07

  Online published: 2014-10-14

Abstract

:It has been reported that HrpNEa could induce the insect resistance of Arabidopsis. Here we demonstrated that HrpNEa also showed potential to enhance the aphid repellency on Cucumis melo. The expression of AtPP22like gene ( lec17 and lec26) in Cucumis melo determined by RT2PCR and the callose deposition in phloem measured by aniline blue staining were both induced by HrpNEa. The action of aphids after placed on Cucumis melo indicated that HrpNEa could in2 duce insect resistance on Cucumis melo. EPG (electrical penetration graph) results revealed that HrpNEa could decrease the feeding frequency of aphids. Thus,we draw the conclusion that HrpNEa could enhance the resistance of Cucumis melo to aphids.

Key words: Cucumis melo; Aphid; Repellance

Cite this article

GOU Zhen-hua , ZHANG Shu-ping , DONG Han-song . Effects of HrpNEa on Inducing Aphid Repellency on Cucumis melo[J]. Acta Agriculturae Boreali-Sinica, 2009 , 24(4) : 188 -192 . DOI: 10.7668/hbnxb.2009.04.037

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