Publications by authors named "Celso Garcia Auer"
Fungal Community Associated with the Leaf-Cutting Ant Acromyrmex crassispinus (Hymenoptera: Formicidae) Colonies: a Search for Potential Biocontrol Agents.
Thiele Sides Camargo Mariane Aparecida Nickele Wilson Reis Filho Susete do Rocio Chiarello Penteado Elisiane Castro de Queiroz Celso Garcia Auer
Microb Ecol
August 2023
The leaf-cutting ant Acromyrmex crassispinus is considered an important pest in forest plantations in southern Brazil. This work aimed to study the fungal community associated with A. crassispinus colonies, subjected to treatments with subdoses of granulated baits (sulfluramid), which might reduce the ability of the ants to care for their symbiotic fungus and other fungi (maybe biocontrol fungi) would take over, to prospect for potential biological control agents.
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- Various factors like temperature, pH, and culture medium influence the growth of fungi and the production of important compounds.
- Studies on the metabolites produced by specific fungi are limited, although they have potential for biotechnological use.
- The highest growth of mycelial mass from a certain fungus occurred at 24°C using potato dextrose and malt extract media, and the disaccharide α-α-trehalose was newly identified in this genus through X-ray diffraction analysis.
Black wattle (Acacia mearnsii De Wild.) is a tree legume native to southeast Australia, but present in all continents. Today it covers about 142,400 ha in Brazil, with plantations concentrated in the southern region of the country.
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- Diplodia pinea was tested for its ability to inhibit the growth of several fungi, including Armillaria sp. and Botrytis cinerea, using a method where two fungi strains are grown together.
- The study found that D. pinea significantly inhibited the growth of all tested fungi, showing a range of 30.75% to 98.37% inhibition and a moderate antagonist activity index of 14.5.
- Chemical analysis identified certain compounds in D. pinea, such as steroids and phenolic compounds, which likely contribute to its ability to compete for resources with other fungi.