Resumen

MALDONADO-CRUZ, E.; OCHOA-MARTINEZ, D. L.  y  TLAPAL-BOLANOS, B.. Effect of acetyl salicylic acid and Bacillus subtilis on Cucumber mosaic virus gourd infection. Rev. Chapingo Ser.Hortic [online]. 2008, vol.14, n.1, pp.55-59. ISSN 2007-4034.

Acetyl salicylic acid and Bacillus subtilis, as resistance promoters, were evaluated on Cucurbita pepo cv. Zucchinni grey infected by Cucumber mosaic virus (CMV). A complete randomized experimental design with five treatments and eight replications was established under greenhouse conditions: Bacillus subtilis applied to soil, B. subtilis applied to leaves, B. subtilis applied to soil and leaves, acetyl salicylic acid applied to leaves, and a Control (without any treatment). Twenty days-old plants were mechanically inoculated with Cucumber mosaic virus (CMV) and 15 days after the inoculation, fresh plant tissue weights, and viral concentration obtained by DAS-ELISA test, were evaluated. Results showed that plants inoculated with B. subtilis applied to soil and those treated with acetyl salicylic acid had significantly more fresh plant tissue weight compared with Control (P≤0.05). Plants of all treatments treated with B. subtilis (to soil, leaves and to soil and leaves) had a significant lower viral concentration compared with Control (P≤0.05) in the DAS- ELISA test.

Palabras llave : plant growth promoting rhizobacteria; systemic acquired resistance; systemic induced resistance; Cucurbita pepo cv. Zucchinni grey.