Antagonism of Gluconacetobacter diazotrophicus (a sugarcane endosymbiont) against Xanthomonas albilineans (pathogen) studied in alginate-immobilized sugarcane stalk tissues
| Autor: | María Blanch, Yolanda Blanco, Carlos Vicente, Dolores Piñón, María-Estrella Legaz |
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| Rok vydání: | 2005 |
| Předmět: |
Xanthomonas
Calcium alginate Bioengineering Applied Microbiology and Biotechnology Microbiology chemistry.chemical_compound Bacteriocins Botany Symbiosis Pathogen Plant Diseases biology fungi food and beverages Xylem biology.organism_classification Saccharum Gluconacetobacter chemistry Xanthomonas albilineans Antagonism Plant Shoots Bacteria Biotechnology Pseudomonadaceae |
| Zdroj: | Journal of Bioscience and Bioengineering. 99:366-371 |
| ISSN: | 1389-1723 |
| DOI: | 10.1263/jbb.99.366 |
| Popis: | Xanthomonas albilineans, a pathogenic bacterium that produces leaf scald disease of sugarcane, secretes a xanthan-like gum that invades both xylem and phloem of the host. Xanthan production has been verified after experimental infection of stalk segments of healthy plants. Moreover, Gluconacetobacter diazotrophicus is a nitrogen-fixing endosymbiont of sugarcane plants that antagonizes with X. albilineans by impeding the production of the bacterial gum. The physiological basis of this antagonism has been studied using tissues of sugarcane stalks previously inoculated with the endosymbiont, then immobilized in calcium alginate and maintained in a culture medium for Gluconacetobacter. Under these conditions, bacteria infecting immobilized tissues are able to secrete to the medium a lysozyme-like bacteriocin that inhibits the growth of X. albilineans. |
| Databáze: | OpenAIRE |
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