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The Scientific World Journal
Volume 2014 (2014), Article ID 810192, 6 pages
Research Article

Effect of Pseudomonas putida on Growth and Anthocyanin Pigment in Two Poinsettia (Euphorbia pulcherrima) Cultivars

1Facultad de Ciencias Agricolas, Universidad Veracruzana, Circuito Universitario Gonzalo Aguirre Beltran S/N, Zona Universitaria, 91090 Xalapa, VER, Mexico
2Centro de Investigaciones Biologicas del Noroeste, Instituto Politecnico Nacional 195, Colonia Playa Palo de Santa Rita, 23090 La Paz, BCS, Mexico
3Universidad de Sonora, Boulevard Luis Encinas y Rosales, Colonia Centro, 23000 Hermosillo, SON, Mexico

Received 10 March 2014; Revised 29 May 2014; Accepted 12 June 2014; Published 3 July 2014

Academic Editor: Ramesh C. Kasana

Copyright © 2014 Ramon Zulueta-Rodriguez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pseudomonas putida is plant growth promoting rhizobacteria (PGPR) that have the capacity to improve growth in plants. The purpose of this study was to determine growth and anthocyanin pigmentation of the bracts in two poinsettia Euphorbia pulcherrima cultivars (Prestige and Sonora Marble) using three strains of P. putida, as well as a mixture of the three (MIX). Comparison with the control group indicated for the most part that Prestige grew better than the Sonora Marble cultivars with the PGPR strains. Prestige with the MIX strain grew better compared to control for the number of cyathia (83 versus 70.4), volume of roots (45 versus 35 cm3), number of leaves (78 versus 58), and area of leaf (1,788 versus 1,331 cm2), except for the number of flowers (8.8 versus 11.6). To the naked eye, coloration of plants appeared identical in color compared to the control group. For all plants with P. putida strains, there was less anthocyanin pigment, but biomass was always greater with PGPR strains. Nevertheless, to the naked eye, the coloration of the plants appeared identical in color compared to the control group. This is the first study reporting the positive effects of P. putida rhizobacteria treatments on growth of poinsettia cultivars.