IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
EL VALOR DE LOS COMPUESTOS VOLÁTILES EN LA INTERACCIÓN GRANO-INSECTO-HONGO
Autor/es:
HERRERA JM; PIZZOLITTO RP; ZUNINO MP; ZYGADLO JA; DAMBOLENA JS
Lugar:
La Falda
Reunión:
Jornada; XIX Jornadas Científicas de la Sociedad de Biología de Córdoba; 2013
Institución organizadora:
Sociedad de Biología de Córdoba
Resumen:
The grains produce volatile
compounds (VC) as a defense mechanism, modulating insect attack and fungal infection.
The present study aimed to evaluate the insecticidal activity against Sitophilus zeamais Motschulsky
(Coleoptera: Curculionidae) and antifungal activity on Fusarium verticillioides. T he
VC from grains and fungi were obtained from commercial preparations.The
insecticidal and antifungal activities were evaluated through fumigants assays.
The most bioactive VC against fungal strain were: trans-2-nonenal> trans-2,cis-6-nonadienal>
trans-2-hexenal> valeraldhyde> 1-octen-3-ol> 3-octanol. However, 1-octen-3-ol
and 3-octanol were the most toxic against S.
zeamais. 1-octen-3-ol and 3-octanol are synthesized by fungal strains and
low concentrations of them stimulate F.verticillioide growth.The aldehydes
were more effective than alcohols. The present results suggest that these
compounds, synthesized by grains, may play an interesting role in the control
of fungi and insect infections. In addition, VC synthesizes by fungal strains
could have repellent effects on insect and/or attractant effects in order to
disperse their reproductive structures. In conclusion, the interaction between
grain-insect-fungal strain could regulate the fungal and insect infections. These
findings could provide an important contribution in search for new compounds to
control insect and fungal.