PREDICTION OF THE AMOUNT OF ENDOPHYTIC BACTERIA IN ROOTS OF DICHANTIUM ARISTATUM BENTH IN THREE LOCALITIES AS A FUNCTION OF PH
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Keywords
Bacteria, rhizosphere, locality, density, chemical parameter
Abstract
The aim of this study was to evaluate the presence of endophytic bacteria in roots of Dichantium aristatum Benth present in cattle farms in three municipalities of the department of Sucre and to relate the presence and absence of these bacteria with respect to pH values. Isolation of endophytic bacteria by roots was carried out, counting was performed by serial dilution technique on R2A agar surface, quantity was determined with respect to municipality and presence of these bacteria with respect to pH values. The results show higher quantities of endophytic bacteria in roots of D. aristatum located in cattle farms in the municipality of Corozal (Colombia) (8.5 X 108 CFU/g root) and lower quantities in the municipality of Tolú (4.16 X 105 CFU/g root). Likewise, lower quantities of endophytic bacteria were found in livestock farms in the municipality of Tolú where pH values were acidic to moderately acidic. Conclusions. This is the first work at regional and national level on the presence of endophytic bacteria with respect to municipality and pH, which will allow in the future to infer how physical, chemical and biological parameters affect the presence of endophytic bacteria to determine the quality and sustainability of pasture agroecosystems in Colombia.
References
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Alexander Pérez Cordero
Universidad de Sucre, Facultad de Ciencias Agropecuarias, Colombia
Donicer E. Montes Vergara
Universidad de Sucre, Facultad de Ciencias Agropecuarias, Colombia
Yelitza Aguas Mendoza
Universidad de Sucre, Facultad de Ingeniería, Colombia,