29 de Enero de 2019
Artículo con referato

Effect of natural and synthetic Brassinosteroids on strawberry immune response against Colletotrichum acutatum

Trabajo publicado en European Journal of Plant Pathology, January 2019, Volume 153, Issue 1, pp 227–241. Fue desarrollado por investigadores del Instituto Superior de Investigaciones Biológicas (CONICET-UNT), la Facultad de Ciencias Naturales (UNT) y Fundación Miguel Lillo, la Universidad La Habana, la Estación Experimental Agropecuaria Famaillá del INTA y la Facultad de Agronomía y Zootecnia (UNT).

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Autores
R. N. FURIO
,
P. L. ALBORNOZ
,
Y. COLL
,
G. M. MARTÍNEZ ZAMORA
, ,
G. G. MARTOS
,
J. C. DÍAZ RICCI
Unidades

Brassinosteroids (BRs) are steroidal essential compounds for plant growth and development. It was shown that the exogenous applications of BRs induce protection against different pathogens and can give plants tolerance/resistance to different abiotic stresses. The aim of this work was to evaluate the protective effect against the fungal pathogen Colletotrichum acutatum, the causal agent of anthracnose disease, on strawberry plants treated with 24-epibrasinolide (EP24) and a formulation based on a brassinosteroid spirostanic analogue DI-31 (BB16). Treatment with both compounds induced a defense response in strawberry plants of the cv. Pájaro against avirulent isolate (M11) of C. acutatum, being more effective at the lower concentration of both steroids (0.1 mg l−1), although the analogue BB16 showed a stronger effect than EP24. The evaluation of biochemical defense markers showed that strawberry plants treated with EP24 and BB16 increased the production of H2O2, O2.-, NO, calcium oxalate crystals and higher callose and lignin deposition as compared to the control plants. However, stomatal closure was only observed in plants treated with BB16. These results suggests that BB16 and EP24 can be used for the activation of innate immunity in strawberry plants, as a new strategy for crop health protection management, alternative to agrochemicals.

Para acceder al trabajo completo ingrese en el siguiente link de la Revista: Effect of natural and synthetic Brassinosteroids on strawberry immune response against Colletotrichum acutatum

Referencias

Áreas geográficas alcanzadas
    • Argentina
    • Tucumán