Transgenic tobacco plants constitutively expressing Arabidopsis NPR1 show enhanced resistance to root-knot nematode, Meloidogyne incognita

BMC Research Notes

PB Kirti¹  JS Prasad²  N Somasekhar²  D Bhanu Priya¹ 

[1] Department of Plant Sciences, University of Hyderabad, Hyderabad 500046, India;Directorate of Rice Research, Rajendranagar, Hyderabad 500046, India

关键词: Meloidogyne incognita;    nematode resistance;    constitutive expression of PR proteins;    AtNPR1;    Transgenic tobacco;   

Others  :  1167402
DOI  :  10.1186/1756-0500-4-231

 received in 2011-03-10, accepted in 2011-07-04,  发布年份 2011

【 摘 要 】

In Arabidopsis, non-expressor of pathogenesis related genes-1, NPR1 has been shown to be a positive regulator of the salicylic acid controlled systemic acquired resistance pathway and modulates the cross talk between SA and JA signaling. Transgenic plants expressing AtNPR1 constitutively exhibited resistance against pathogens as well as herbivory. In the present study, tobacco transgenic plants expressing AtNPR1 were studied further for their response to infection by the sedentary endoparasitic root knot nematode, Meloidogyne incognita. Transgenic plants showed enhanced resistance against the root-knot nematode infection. Prominent differences in the shoot and root weights of wild type and transgenic plants were observed post-inoculation with M. incognita. This was associated with a decrease in the number of root galls and egg masses in transgenic plants compared to WT. The transgenic plants also showed constitutive and induced expression of some PR protein genes, when challenged with M. incognita.

【 授权许可】

   
2010 Kirti et al; licensee BioMed Central Ltd.

【 图 表 】

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