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ARTICLE

OVEREXPRESSION OF AHRRS5 IN TOBACCO ENHANCES RESISTANCE TO BACTERIAL WILT

Date : 27 July 2016

Despite numerous studies, efficient control methods for bacterial wilt caused by Ralstonia solanacearum remain unavailable. This prompted scientists from Fujian Agriculture and Forestry University in China, led by Chong Zhang, to characterize a novel resistance gene AhRRS5 from peanut, which was found to be upregulated in both resistant and susceptible peanut cultivars in response to R. solanacearum.

 

Analysis revealed that treatment with phytohormones, as well as abiotic stresses increased the expression levels of AhRRS5. When overexpressed in tobacco, the gene induced hypersensitive response and enhanced the crop's resistance to R. solanacearum. Several defense-responsive marker genes were also upregulated in transgenic lines compared to the wild types.

 

Results reveal that AhRRS5 participates in the defense response to R. solanacearum through multiple signaling pathways. The results of this study may serve as guide to developing enhanced resistance to bacterial wilt disease.

 

For more information, read the full article in Plant Biotechnology Journal http://onlinelibrary.wiley.com/doi/10.1111/pbi.12589/full.