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.

Influence of chitin nanofibers and gallic acid on physical-chemical and biological performances of chitosan-based films.

In this work, chitosan films loaded with gallic acid and different content of chitin nanofibers were prepared and subjected to different characterization techniques. The results showed that the inclusion of gallic acid to chitosan films caused moderate decrease in water vapor permeability (by 29 %) and increased tensile strength of films (by 169 %) in comparison to the neat chitosan films. Furthermore, it was found that the addition of chitin nanofibers up to 30 % into chitosan/gallic acid films additionally improved tensile strength (by 474 %) and reduced plasticity of films (by 171 %), when compared to the chitosan/gallic acid films.

Use of to Control Root Rot Disease Caused by var. in Industrial Chicory ( var. Bisch.).

var. is a recurrent pathogen causing root rot in industrial chicory. Currently, there is no chemical or varietal control for this disease, and thus, management strategies need to be developed.

Integrative Pathogenicity Assay and Operational Taxonomy-Based Detection of New Forma Specialis of Causing Datepalm Wilt.

Pathogenicity-associated genes are highly host-specific and contribute to host-specific virulence. We tailored the traditional Koch's postulates with integrative omics by hypothesizing that the effector genes associated with host-pathogenicity are determinant markers for virulence, and developed Integrative Pathogenicity (IP) postulates for authenticated pathogenicity testing in plants. To set the criteria, we experimented on datepalm () for the vascular wilt pathogen and confirmed the pathogen based on secreted in xylem genes (effectors genes) using genomic and transcriptomic approaches, and found it a reliable solution when pathogenicity is in question.

First report of causing wood necrosis in European hazelnut in Chile.

In Chile, the planted area of European hazelnut ( L.) reaches around 30,000 hectares, mainly concentrated in the central and southern area of the country where climate and soil provide a natural environment well suited to growing this species. Only a few diseases affect this nut tree in Chile.