Assessment of Chemical and Biological Fungicides for the Control of Causing Wood Necrosis in Hazelnut.

Fungal trunk disease (FTD) poses a significant threat to hazelnut ( L.) production worldwide. In Chile, the fungus , from the Botryosphaeriaceae family, has been frequently identified causing this disease in the Maule and Ñuble Regions.

Biocontrol of Sirex noctilio by the parasitic nematode Deladenus siricidicola: A five season field study in southern Chile.

In 2001, the woodwasp Sirex noctilio was detected in Pinus radiata plantations in the Biobio region of southern Chile. Subsequently, an intense biological control program using the female sterilizing nematode Deladenus siricidicola was implemented in 2010. During five seasons between 2012 and 2017, we studied the parasitism of D.

Independent Preharvest Applications of Methyl Jasmonate and Chitosan Elicit Differential Upregulation of Defense-Related Genes with Reduced Incidence of Gray Mold Decay during Postharvest Storage of Fragaria chiloensis Fruit.

The Chilean strawberry () fruit has interesting organoleptic properties, but its postharvest life is affected by gray mold decay caused by . The effect of preharvest applications of methyl jasmonate (MeJA) or chitosan on the molecular defense-related responses and protection against gray mold decay were investigated in Chilean strawberry fruit during postharvest storage. Specifically, we inoculated harvested fruit with spores and studied the expression of genes encoding for the pathogenesis-related (PR) proteins β-1,3-glucanases (, and ) and chitinases ( and ), and for polygalacturonase inhibiting proteins ( and ) at 0, 2, 24, 48, and 72 h post inoculation (hpi).

[Characterization of growth-promoting rhizobacteria in Eucalyptus nitens seedlings].

Rhizospheric and endophytic bacteria were isolated from the rizosphere and root tissue of Eucalyptus nitens. The objective of this work was to evaluate their capacity to promote growth in seedlings of the same species under greenhouse conditions. The isolates that improved seedling growth were identified and characterized by their capacity to produce indoleacetic acid (IAA), solubilize phosphates and increase 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity.

Production of phytohormones, siderophores and population fluctuation of two root-promoting rhizobacteria in Eucalyptus globulus cuttings.

Vegetative propagation by stem cuttings and mini-cuttings has been used worldwide for growing Eucalyptus plants. However, clones and hybrids of this plant present a great variability in their rooting capacity, apart from a gradual decrease in the rooting potential due to the ontogenetic age of the mother plant. Several studies have demonstrated that some bacteria promote plant growth and rooting through the action of direct and indirect mechanisms that are not still completely clear.