Abstract:
:Plants are continuously exposed to myriad pathogen stresses. However, the molecular mechanisms by which these stress signals are perceived and transduced are poorly understood. In this study, the maize gene GRMZM2G315431 was identified to be highly inducible by Rhizoctonia solani infection, suggesting that the promoter of GRMZM2G315431 (pGRMZM2G315431) might contain a specific cis-acting element responsive to R. solani attack. To identify the R. solani-responsive element in pGRMZM2G315431, a series of binary plant transformation vectors were constructed by fusing pGRMZM2G315431 or its deletion-derivatives with the reporter genes. In the transient gene expression system of Nicotiana benthamiana leaves inoculated with R. solani, GUS quantification suggested that the DNA fragment contains the unknown pathogen-inducible cis-elements in the -1323 to -1212 region. Furthermore, detailed quantitative assays showed that two novel cis-elements, GTTGA in the -1243 to -1239 region and TATTT in the -1232 to -1228 region, were responsible for the R. solani-inducible activity. These two cis-elements were also identified to have R. solani-specific-inducible activity in stable transgenic rice plants, suggesting the existence of a novel regulation mechanism involved in the interaction between R. solani and Zea mays.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li N,Chen J,Yang F,Wei S,Kong L,Ding X,Chu Zdoi
10.1038/srep42059subject
Has Abstractpub_date
2017-02-06 00:00:00pages
42059issn
2045-2322pii
srep42059journal_volume
7pub_type
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