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Research Papers

Gluconoacetobacter diazotrophicus Elicitate a Sugarcane Defense Response Against a Pathogenic Bacteria Xanthomonas albilineans

Ariel D Arencibia, Fabiano Vinagre, Yandi Estevez, Aydiloide Bernal, Juana Perez, Janaina Cavalcanti, Ignacio Santana and Adrianna Hemerly

volume 1 | issue 5

september/october 2006
Pages: 265 - 273

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A new role for the plant growth-promoting nitrogen-fixing endophytic bacteria Gluconacetobacter diazotrophicus has been identified and characterized while it is involved in the sugarcane-Xanthomonas albilineans pathogenic interactions. Living G.diazotrophicus posse and/or produce elicitor molecules which activate the sugarcane defense response resulting in the plant resistance to X.albilineans, in this particular case controlling the pathogen transmission to emerging agamic shoots. A total of 47 differentially expressed transcript derived fragments (TDFs) were identified by cDNA-AFLP. Transcripts showed significant homologies to genes of the ethylene signaling pathway (26%), proteins regulates by auxins (9%), ß-1,3 Glucanase proteins (6%) and ubiquitin genes (4%), all major signaling mechanisms. Results point toward a form of induction of systemic resistance in sugarcane-G. diazotrophicus interactions which protect the plant against X. albilineans attack.

Authors

Ariel D Arencibia

1National Institute for Sugarcane Research, Havana City, Cuba.

Fabiano Vinagre

Institute of Medical Biochemistry, Rio de Janeiro, Brazil

Yandi Estevez

National Institute for Sugarcane Research, Havana City, Cuba.

Aydiloide Bernal

National Institute for Sugarcane Research, Havana City, Cuba.

Juana Perez

National Institute for Sugarcane Research, Havana City, Cuba.

Janaina Cavalcanti

Institute of Medical Biochemistry, Rio de Janeiro, Brazil

Ignacio Santana

National Institute for Sugarcane Research, Havana City, Cuba.

Adrianna Hemerly

Institute of Medical Biochemistry, Rio de Janeiro, Brazil



We now provide open access to journal articles published online for one year or more. This article may be downloaded at the following link:
 Download PDF

If the document does not open, please right-click on the link (control-click on a Macintosh) and select the option to save the file to disk.