Should we introduce beneficial microorganisms into crops, or is it better to extract the bioactive molecules and apply them? This question sparks Lídia da Silva Pereira’s fellowship, which explores an alternative to whole-organism application by focusing on purified bioactive proteins from Trichoderma. Microbial inoculants offer the advantage of self-replication and ecological integration, yet their performance in the field can be inconsistent due to environmental variability. By contrast, isolating and applying specific molecules promises precision and standardization, but often sacrifices the synergistic interactions that living systems provide. Lídia’s work positions itself within this trade-off, seeking to harness targeted antifungal activity while improving reliability for agricultural application.
A central challenge in this approach is that bioactive molecules—particularly proteins—are inherently unstable and can lose activity under environmental stresses, such as temperature, pH, or biodegrading conditions. Lídia addresses this limitation by encapsulating Trichoderma-derived chitinase in liposomal systems, demonstrating high encapsulation efficiency (~82%) and strong thermal stability across a range of temperatures. These results highlight the promise of nanostructured delivery systems in preserving bioactivity and enabling controlled release. However, the study also illustrates the complexity of translating biochemical potential into field efficacy. Despite retaining enzymatic activity, the antifungal effects were limited under experimental conditions, suggesting that isolated enzymes may require formulation optimization or combination with other agents to achieve meaningful crop protection.
The fellowship provides valuable insights into the shift from organism-based to molecule-based bioproducts in sustainable agriculture. It advances a framework for developing more stable and environmentally safe agricultural inputs, underscoring that efficacy depends not only on the molecule itself but also on its formulation and deployment.
We are thankful for the guidance and support of Dr. Priscila Gava Mazzola and Dr. Sebastián Pablo Rius, as well as the institutional contributions of the Universidade Estadual de Campinas (UNICAMP) and Universidad Nacional de Rosario (UNR).
