Hanna M. Heidel‐Fischer

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About

Hanna M. Heidel‐Fischer is a leading researcher in the molecular ecology of plant–insect interactions, with a focus on how insects perceive and respond to their environment. Her work bridges immunology, digestion, and chemical ecology, exploring how herbivores like butterflies detect and defend against plant toxins and pathogens. In her highly cited 2008 study, "Immunity or Digestion" (94 citations), she revealed a critical evolutionary trade-off: insect β1,3-glucan recognition proteins (βGRPs), traditionally known for activating immune responses by binding microbial surface patterns, can also function in digestion. This dual role challenged established views on arthropod immunity and digestion, showing that these proteins are co-opted for nutrient acquisition in herbivores. Heidel‐Fischer’s contributions have deepened understanding of how insects balance defense and metabolism, with implications for pest control and coevolutionary dynamics. Her work is widely recognized for its integrative approach, combining molecular biology, genomics, and evolutionary theory. With a growing citation impact, she continues to shape the field of insect–plant chemical ecology, inspiring new research on the adaptive plasticity of immune and digestive systems.